[PATCH 4.19 00/95] 4.19.126-rc1 review

[PATCH 4.19 00/95] 4.19.126-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 4.19.126 release.
There are 95 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Wed, 03 Jun 2020 17:38:19 +0000.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.126-rc1.gz
or in the git tree and branch at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 4.19.126-rc1

Liviu Dudau <liviu@dudau.co.uk>
    mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap()

Pablo Neira Ayuso <pablo@netfilter.org>
    netfilter: nf_conntrack_pptp: fix compilation warning with W=1 build

Dmitry Torokhov <dmitry.torokhov@gmail.com>
    Revert "Input: i8042 - add ThinkPad S230u to i8042 nomux list"

Qiushi Wu <wu000273@umn.edu>
    bonding: Fix reference count leak in bond_sysfs_slave_add.

Eric Dumazet <edumazet@google.com>
    crypto: chelsio/chtls: properly set tp->lsndtime

Qiushi Wu <wu000273@umn.edu>
    qlcnic: fix missing release in qlcnic_83xx_interrupt_test.

Björn Töpel <bjorn.topel@intel.com>
    xsk: Add overflow check for u64 division, stored into u32

Michael Chan <michael.chan@broadcom.com>
    bnxt_en: Fix accumulation of bp->net_stats_prev.

Xin Long <lucien.xin@gmail.com>
    esp6: get the right proto for transport mode in esp6_gso_encap

Pablo Neira Ayuso <pablo@netfilter.org>
    netfilter: nf_conntrack_pptp: prevent buffer overflows in debug code

Pablo Neira Ayuso <pablo@netfilter.org>
    netfilter: nfnetlink_cthelper: unbreak userspace helper support

Phil Sutter <phil@nwl.cc>
    netfilter: ipset: Fix subcounter update skip

Michael Braun <michael-dev@fami-braun.de>
    netfilter: nft_reject_bridge: enable reject with bridge vlan

Xin Long <lucien.xin@gmail.com>
    ip_vti: receive ipip packet by calling ip_tunnel_rcv

Jeremy Sowden <jeremy@azazel.net>
    vti4: eliminated some duplicate code.

Antony Antony <antony@phenome.org>
    xfrm: fix error in comment

Xin Long <lucien.xin@gmail.com>
    xfrm: fix a NULL-ptr deref in xfrm_local_error

Xin Long <lucien.xin@gmail.com>
    xfrm: fix a warning in xfrm_policy_insert_list

Nicolas Dichtel <nicolas.dichtel@6wind.com>
    xfrm interface: fix oops when deleting a x-netns interface

Xin Long <lucien.xin@gmail.com>
    xfrm: call xfrm_output_gso when inner_protocol is set in xfrm_output

Xin Long <lucien.xin@gmail.com>
    xfrm: allow to accept packets with ipv6 NEXTHDR_HOP in xfrm_input

Al Viro <viro@zeniv.linux.org.uk>
    copy_xstate_to_kernel(): don't leave parts of destination uninitialized

Alexander Dahl <post@lespocky.de>
    x86/dma: Fix max PFN arithmetic overflow on 32 bit systems

Linus Lüssing <ll@simonwunderlich.de>
    mac80211: mesh: fix discovery timer re-arming issue / crash

Jason Gunthorpe <jgg@ziepe.ca>
    RDMA/core: Fix double destruction of uobject

Sarthak Garg <sartgarg@codeaurora.org>
    mmc: core: Fix recursive locking issue in CQE recovery path

Helge Deller <deller@gmx.de>
    parisc: Fix kernel panic in mem_init()

Qiushi Wu <wu000273@umn.edu>
    iommu: Fix reference count leak in iommu_group_alloc.

Arnd Bergmann <arnd@arndb.de>
    include/asm-generic/topology.h: guard cpumask_of_node() macro argument

Alexander Potapenko <glider@google.com>
    fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info()

Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
    mm: remove VM_BUG_ON(PageSlab()) from page_mapcount()

Valentine Fatiev <valentinef@mellanox.com>
    IB/ipoib: Fix double free of skb in case of multicast traffic in CM mode

Jerry Lee <leisurelysw24@gmail.com>
    libceph: ignore pool overlay and cache logic on redirects

Kailang Yang <kailang@realtek.com>
    ALSA: hda/realtek - Add new codec supported for ALC287

Takashi Iwai <tiwai@suse.de>
    ALSA: usb-audio: Quirks for Gigabyte TRX40 Aorus Master onboard audio

Eric W. Biederman <ebiederm@xmission.com>
    exec: Always set cap_ambient in cap_bprm_set_creds

Chris Chiu <chiu@endlessm.com>
    ALSA: usb-audio: mixer: volume quirk for ESS Technology Asus USB DAC

Takashi Iwai <tiwai@suse.de>
    ALSA: hda/realtek - Add a model for Thinkpad T570 without DAC workaround

Changming Liu <liu.changm@northeastern.edu>
    ALSA: hwdep: fix a left shifting 1 by 31 UB bug

Qiushi Wu <wu000273@umn.edu>
    RDMA/pvrdma: Fix missing pci disable in pvrdma_pci_probe()

Peng Hao <richard.peng@oppo.com>
    mmc: block: Fix use-after-free issue for rpmb

Hamish Martin <hamish.martin@alliedtelesis.co.nz>
    ARM: dts: bcm: HR2: Fix PPI interrupt types

Vincent Stehlé <vincent.stehle@laposte.net>
    ARM: dts: bcm2835-rpi-zero-w: Fix led polarity

Robert Beckett <bob.beckett@collabora.com>
    ARM: dts/imx6q-bx50v3: Set display interface clock parents

Kaike Wan <kaike.wan@intel.com>
    IB/qib: Call kobject_put() when kobject_init_and_add() fails

Takashi Iwai <tiwai@suse.de>
    gpio: exar: Fix bad handling for ida_simple_get error path

Russell King <rmk+kernel@armlinux.org.uk>
    ARM: uaccess: fix DACR mismatch with nested exceptions

Russell King <rmk+kernel@armlinux.org.uk>
    ARM: uaccess: integrate uaccess_save and uaccess_restore

Russell King <rmk+kernel@armlinux.org.uk>
    ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h

Stefan Agner <stefan@agner.ch>
    ARM: 8843/1: use unified assembler in headers

Łukasz Stelmach <l.stelmach@samsung.com>
    ARM: 8970/1: decompressor: increase tag size

Wei Yongjun <weiyongjun1@huawei.com>
    Input: synaptics-rmi4 - fix error return code in rmi_driver_probe()

Evan Green <evgreen@chromium.org>
    Input: synaptics-rmi4 - really fix attn_data use-after-free

Kevin Locke <kevin@kevinlocke.name>
    Input: i8042 - add ThinkPad S230u to i8042 reset list

Christophe JAILLET <christophe.jaillet@wanadoo.fr>
    Input: dlink-dir685-touchkeys - fix a typo in driver name

Łukasz Patron <priv.luk@gmail.com>
    Input: xpad - add custom init packet for Xbox One S controllers

Brendan Shanks <bshanks@codeweavers.com>
    Input: evdev - call input_flush_device() on release(), not flush()

Kevin Locke <kevin@kevinlocke.name>
    Input: i8042 - add ThinkPad S230u to i8042 nomux list

James Hilliard <james.hilliard1@gmail.com>
    Input: usbtouchscreen - add support for BonXeon TP

Matteo Croce <mcroce@redhat.com>
    samples: bpf: Fix build error

Steve French <stfrench@microsoft.com>
    cifs: Fix null pointer check in cifs_read

Kefeng Wang <wangkefeng.wang@huawei.com>
    riscv: stacktrace: Fix undefined reference to `walk_stackframe'

Denis V. Lunev <den@openvz.org>
    IB/i40iw: Remove bogus call to netdev_master_upper_dev_get()

Arnd Bergmann <arnd@arndb.de>
    net: freescale: select CONFIG_FIXED_PHY where needed

Masahiro Yamada <masahiroy@kernel.org>
    usb: gadget: legacy: fix redundant initialization warnings

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    usb: dwc3: pci: Enable extcon driver for Intel Merrifield

Lei Xue <carmark.dlut@gmail.com>
    cachefiles: Fix race between read_waiter and read_copier involving op->to_do

Bob Peterson <rpeterso@redhat.com>
    gfs2: don't call quota_unhold if quotas are not locked

Bob Peterson <rpeterso@redhat.com>
    gfs2: move privileged user check to gfs2_quota_lock_check

Chuhong Yuan <hslester96@gmail.com>
    net: microchip: encx24j600: add missed kthread_stop

Andrew Oakley <andrew@adoakley.name>
    ALSA: usb-audio: add mapping for ASRock TRX40 Creator

Stephen Warren <swarren@nvidia.com>
    gpio: tegra: mask GPIO IRQs during IRQ shutdown

Johan Jonker <jbx6244@gmail.com>
    ARM: dts: rockchip: fix pinctrl sub nodename for spi in rk322x.dtsi

Johan Jonker <jbx6244@gmail.com>
    ARM: dts: rockchip: swap clock-names of gpu nodes

Johan Jonker <jbx6244@gmail.com>
    arm64: dts: rockchip: swap interrupts interrupt-names rk3399 gpu node

Johan Jonker <jbx6244@gmail.com>
    arm64: dts: rockchip: fix status for &gmac2phy in rk3328-evb.dts

Johan Jonker <jbx6244@gmail.com>
    ARM: dts: rockchip: fix phy nodename for rk3228-evb

Jiri Pirko <jiri@mellanox.com>
    mlxsw: spectrum: Fix use-after-free of split/unsplit/type_set in case reload fails

Qiushi Wu <wu000273@umn.edu>
    net/mlx4_core: fix a memory leak bug.

Qiushi Wu <wu000273@umn.edu>
    net: sun: fix missing release regions in cas_init_one().

Roi Dayan <roid@mellanox.com>
    net/mlx5: Annotate mutex destroy for root ns

Moshe Shemesh <moshe@mellanox.com>
    net/mlx5e: Update netdev txq on completions during closure

Jere Leppänen <jere.leppanen@nokia.com>
    sctp: Start shutdown on association restart if in SHUTDOWN-SENT state and socket is closed

Neil Horman <nhorman@tuxdriver.com>
    sctp: Don't add the shutdown timer if its already been added

Marc Payne <marc.payne@mdpsys.co.uk>
    r8152: support additional Microsoft Surface Ethernet Adapter variant

Roman Mashak <mrv@mojatatu.com>
    net sched: fix reporting the first-time use timestamp

Yuqi Jin <jinyuqi@huawei.com>
    net: revert "net: get rid of an signed integer overflow in ip_idents_reserve()"

Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
    net: qrtr: Fix passing invalid reference to qrtr_local_enqueue()

Moshe Shemesh <moshe@mellanox.com>
    net/mlx5: Add command entry handling completion

Vadim Fedorenko <vfedorenko@novek.ru>
    net: ipip: fix wrong address family in init error path

Martin KaFai Lau <kafai@fb.com>
    net: inet_csk: Fix so_reuseport bind-address cache in tb->fast*

Boris Sukholitko <boris.sukholitko@broadcom.com>
    __netif_receive_skb_core: pass skb by reference

DENG Qingfang <dqfext@gmail.com>
    net: dsa: mt7530: fix roaming from DSA user ports

Vladimir Oltean <vladimir.oltean@nxp.com>
    dpaa_eth: fix usage as DSA master, try 3

Eric Dumazet <edumazet@google.com>
    ax25: fix setsockopt(SO_BINDTODEVICE)


-------------

Diffstat:

 Makefile                                           |   4 +-
 arch/arm/boot/compressed/vmlinux.lds.S             |   2 +-
 arch/arm/boot/dts/bcm-hr2.dtsi                     |   6 +-
 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts           |   2 +-
 arch/arm/boot/dts/imx6q-b450v3.dts                 |   7 --
 arch/arm/boot/dts/imx6q-b650v3.dts                 |   7 --
 arch/arm/boot/dts/imx6q-b850v3.dts                 |  11 --
 arch/arm/boot/dts/imx6q-bx50v3.dtsi                |  15 +++
 arch/arm/boot/dts/rk3036.dtsi                      |   2 +-
 arch/arm/boot/dts/rk3228-evb.dts                   |   2 +-
 arch/arm/boot/dts/rk322x.dtsi                      |   6 +-
 arch/arm/boot/dts/rk3xxx.dtsi                      |   2 +-
 arch/arm/include/asm/assembler.h                   |  83 +--------------
 arch/arm/include/asm/uaccess-asm.h                 | 117 +++++++++++++++++++++
 arch/arm/include/asm/vfpmacros.h                   |   8 +-
 arch/arm/kernel/entry-armv.S                       |  11 +-
 arch/arm/kernel/entry-header.S                     |   9 +-
 arch/arm/lib/bitops.h                              |   8 +-
 arch/arm64/boot/dts/rockchip/rk3328-evb.dts        |   2 +-
 arch/arm64/boot/dts/rockchip/rk3399.dtsi           |   8 +-
 arch/parisc/mm/init.c                              |   2 +-
 arch/riscv/kernel/stacktrace.c                     |   2 +-
 arch/x86/include/asm/dma.h                         |   2 +-
 arch/x86/kernel/fpu/xstate.c                       |  86 ++++++++-------
 drivers/crypto/chelsio/chtls/chtls_io.c            |   2 +-
 drivers/gpio/gpio-exar.c                           |   7 +-
 drivers/gpio/gpio-tegra.c                          |   1 +
 drivers/infiniband/core/rdma_core.c                |  19 ++--
 drivers/infiniband/hw/i40iw/i40iw_cm.c             |   8 --
 drivers/infiniband/hw/qib/qib_sysfs.c              |   9 +-
 drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c     |   2 +-
 drivers/infiniband/ulp/ipoib/ipoib.h               |   4 +
 drivers/infiniband/ulp/ipoib/ipoib_cm.c            |  15 +--
 drivers/infiniband/ulp/ipoib/ipoib_ib.c            |   9 +-
 drivers/infiniband/ulp/ipoib/ipoib_main.c          |  10 +-
 drivers/input/evdev.c                              |  19 +---
 drivers/input/joystick/xpad.c                      |  12 +++
 drivers/input/keyboard/dlink-dir685-touchkeys.c    |   2 +-
 drivers/input/rmi4/rmi_driver.c                    |   5 +-
 drivers/input/serio/i8042-x86ia64io.h              |   7 ++
 drivers/input/touchscreen/usbtouchscreen.c         |   1 +
 drivers/iommu/iommu.c                              |   2 +-
 drivers/mmc/core/block.c                           |   2 +-
 drivers/mmc/core/queue.c                           |  13 +--
 drivers/net/bonding/bond_sysfs_slave.c             |   4 +-
 drivers/net/dsa/mt7530.c                           |   9 +-
 drivers/net/dsa/mt7530.h                           |   1 +
 drivers/net/ethernet/broadcom/bnxt/bnxt.c          |   2 +-
 drivers/net/ethernet/freescale/Kconfig             |   2 +
 drivers/net/ethernet/freescale/dpaa/Kconfig        |   1 +
 drivers/net/ethernet/freescale/dpaa/dpaa_eth.c     |   2 +-
 drivers/net/ethernet/mellanox/mlx4/fw.c            |   2 +-
 drivers/net/ethernet/mellanox/mlx5/core/cmd.c      |  14 +++
 drivers/net/ethernet/mellanox/mlx5/core/en_tx.c    |   6 +-
 drivers/net/ethernet/mellanox/mlx5/core/fs_core.c  |   6 ++
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c     |  14 ++-
 drivers/net/ethernet/mellanox/mlxsw/switchx2.c     |   8 ++
 drivers/net/ethernet/microchip/encx24j600.c        |   5 +-
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c    |   4 +-
 drivers/net/ethernet/sun/cassini.c                 |   3 +-
 drivers/net/usb/cdc_ether.c                        |  11 +-
 drivers/net/usb/r8152.c                            |   1 +
 drivers/usb/dwc3/dwc3-pci.c                        |   1 +
 drivers/usb/gadget/legacy/inode.c                  |   3 +-
 fs/binfmt_elf.c                                    |   2 +-
 fs/cachefiles/rdwr.c                               |   2 +-
 fs/cifs/file.c                                     |   2 +-
 fs/gfs2/quota.c                                    |   6 +-
 fs/gfs2/quota.h                                    |   3 +-
 include/asm-generic/topology.h                     |   2 +-
 include/linux/mlx5/driver.h                        |   1 +
 include/linux/mm.h                                 |  15 ++-
 include/linux/netfilter/nf_conntrack_pptp.h        |   2 +-
 include/net/act_api.h                              |   3 +-
 include/rdma/uverbs_std_types.h                    |   2 +-
 include/uapi/linux/xfrm.h                          |   2 +-
 mm/vmalloc.c                                       |   2 +-
 net/ax25/af_ax25.c                                 |   6 +-
 net/bridge/netfilter/nft_reject_bridge.c           |   6 ++
 net/ceph/osd_client.c                              |   4 +-
 net/core/dev.c                                     |  20 +++-
 net/dsa/tag_mtk.c                                  |  15 +++
 net/ipv4/inet_connection_sock.c                    |  43 ++++----
 net/ipv4/ip_vti.c                                  |  75 +++++++------
 net/ipv4/ipip.c                                    |   2 +-
 net/ipv4/netfilter/nf_nat_pptp.c                   |   7 +-
 net/ipv4/route.c                                   |  14 ++-
 net/ipv6/esp6_offload.c                            |   9 +-
 net/mac80211/mesh_hwmp.c                           |   7 ++
 net/netfilter/ipset/ip_set_list_set.c              |   2 +-
 net/netfilter/nf_conntrack_pptp.c                  |  62 ++++++-----
 net/netfilter/nfnetlink_cthelper.c                 |   3 +-
 net/qrtr/qrtr.c                                    |   2 +-
 net/sctp/sm_sideeffect.c                           |  14 ++-
 net/sctp/sm_statefuns.c                            |   9 +-
 net/xdp/xdp_umem.c                                 |   8 +-
 net/xfrm/xfrm_input.c                              |   2 +-
 net/xfrm/xfrm_interface.c                          |  21 ++++
 net/xfrm/xfrm_output.c                             |  15 +--
 net/xfrm/xfrm_policy.c                             |   7 +-
 samples/bpf/lwt_len_hist_user.c                    |   2 -
 security/commoncap.c                               |   1 +
 sound/core/hwdep.c                                 |   4 +-
 sound/pci/hda/patch_realtek.c                      |  39 +++++--
 sound/usb/mixer.c                                  |   8 ++
 sound/usb/mixer_maps.c                             |  24 +++++
 sound/usb/quirks-table.h                           |  26 +++++
 107 files changed, 724 insertions(+), 429 deletions(-)

[PATCH 4.19 01/95] ax25: fix setsockopt(SO_BINDTODEVICE)

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 687775cec056b38a4c8f3291e0dd7a9145f7b667 ]

syzbot was able to trigger this trace [1], probably by using
a zero optlen.

While we are at it, cap optlen to IFNAMSIZ - 1 instead of IFNAMSIZ.

[1]
BUG: KMSAN: uninit-value in strnlen+0xf9/0x170 lib/string.c:569
CPU: 0 PID: 8807 Comm: syz-executor483 Not tainted 5.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x220 lib/dump_stack.c:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 strnlen+0xf9/0x170 lib/string.c:569
 dev_name_hash net/core/dev.c:207 [inline]
 netdev_name_node_lookup net/core/dev.c:277 [inline]
 __dev_get_by_name+0x75/0x2b0 net/core/dev.c:778
 ax25_setsockopt+0xfa3/0x1170 net/ax25/af_ax25.c:654
 __compat_sys_setsockopt+0x4ed/0x910 net/compat.c:403
 __do_compat_sys_setsockopt net/compat.c:413 [inline]
 __se_compat_sys_setsockopt+0xdd/0x100 net/compat.c:410
 __ia32_compat_sys_setsockopt+0x62/0x80 net/compat.c:410
 do_syscall_32_irqs_on arch/x86/entry/common.c:339 [inline]
 do_fast_syscall_32+0x3bf/0x6d0 arch/x86/entry/common.c:398
 entry_SYSENTER_compat+0x68/0x77 arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f57dd9
Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffae8c1c EFLAGS: 00000217 ORIG_RAX: 000000000000016e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000101
RDX: 0000000000000019 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000012 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Local variable ----devname@ax25_setsockopt created at:
 ax25_setsockopt+0xe6/0x1170 net/ax25/af_ax25.c:536
 ax25_setsockopt+0xe6/0x1170 net/ax25/af_ax25.c:536

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ax25/af_ax25.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -638,8 +638,10 @@ static int ax25_setsockopt(struct socket
 		break;
 
 	case SO_BINDTODEVICE:
-		if (optlen > IFNAMSIZ)
-			optlen = IFNAMSIZ;
+		if (optlen > IFNAMSIZ - 1)
+			optlen = IFNAMSIZ - 1;
+
+		memset(devname, 0, sizeof(devname));
 
 		if (copy_from_user(devname, optval, optlen)) {
 			res = -EFAULT;

[PATCH 4.19 02/95] dpaa_eth: fix usage as DSA master, try 3

[Greg Kroah-Hartman]

From: Vladimir Oltean <vladimir.oltean@nxp.com>

[ Upstream commit 5d14c304bfc14b4fd052dc83d5224376b48f52f0 ]

The dpaa-eth driver probes on compatible string for the MAC node, and
the fman/mac.c driver allocates a dpaa-ethernet platform device that
triggers the probing of the dpaa-eth net device driver.

All of this is fine, but the problem is that the struct device of the
dpaa_eth net_device is 2 parents away from the MAC which can be
referenced via of_node. So of_find_net_device_by_node can't find it, and
DSA switches won't be able to probe on top of FMan ports.

It would be a bit silly to modify a core function
(of_find_net_device_by_node) to look for dev->parent->parent->of_node
just for one driver. We're just 1 step away from implementing full
recursion.

Actually there have already been at least 2 previous attempts to make
this work:
- Commit a1a50c8e4c24 ("fsl/man: Inherit parent device and of_node")
- One or more of the patches in "[v3,0/6] adapt DPAA drivers for DSA":
  https://patchwork.ozlabs.org/project/netdev/cover/1508178970-28945-1-git-send-email-madalin.bucur@nxp.com/
  (I couldn't really figure out which one was supposed to solve the
  problem and how).

Point being, it looks like this is still pretty much a problem today.
On T1040, the /sys/class/net/eth0 symlink currently points to

../../devices/platform/ffe000000.soc/ffe400000.fman/ffe4e6000.ethernet/dpaa-ethernet.0/net/eth0

which pretty much illustrates the problem. The closest of_node we've got
is the "fsl,fman-memac" at /soc@ffe000000/fman@400000/ethernet@e6000,
which is what we'd like to be able to reference from DSA as host port.

For of_find_net_device_by_node to find the eth0 port, we would need the
parent of the eth0 net_device to not be the "dpaa-ethernet" platform
device, but to point 1 level higher, aka the "fsl,fman-memac" node
directly. The new sysfs path would look like this:

../../devices/platform/ffe000000.soc/ffe400000.fman/ffe4e6000.ethernet/net/eth0

And this is exactly what SET_NETDEV_DEV does. It sets the parent of the
net_device. The new parent has an of_node associated with it, and
of_dev_node_match already checks for the of_node of the device or of its
parent.

Fixes: a1a50c8e4c24 ("fsl/man: Inherit parent device and of_node")
Fixes: c6e26ea8c893 ("dpaa_eth: change device used")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/freescale/dpaa/dpaa_eth.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -2796,7 +2796,7 @@ static int dpaa_eth_probe(struct platfor
 	}
 
 	/* Do this here, so we can be verbose early */
-	SET_NETDEV_DEV(net_dev, dev);
+	SET_NETDEV_DEV(net_dev, dev->parent);
 	dev_set_drvdata(dev, net_dev);
 
 	priv = netdev_priv(net_dev);

[PATCH 4.19 03/95] net: dsa: mt7530: fix roaming from DSA user ports

[Greg Kroah-Hartman]

From: DENG Qingfang <dqfext@gmail.com>

[ Upstream commit 5e5502e012b8129e11be616acb0f9c34bc8f8adb ]

When a client moves from a DSA user port to a software port in a bridge,
it cannot reach any other clients that connected to the DSA user ports.
That is because SA learning on the CPU port is disabled, so the switch
ignores the client's frames from the CPU port and still thinks it is at
the user port.

Fix it by enabling SA learning on the CPU port.

To prevent the switch from learning from flooding frames from the CPU
port, set skb->offload_fwd_mark to 1 for unicast and broadcast frames,
and let the switch flood them instead of trapping to the CPU port.
Multicast frames still need to be trapped to the CPU port for snooping,
so set the SA_DIS bit of the MTK tag to 1 when transmitting those frames
to disable SA learning.

Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch")
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/dsa/mt7530.c |    9 ++-------
 drivers/net/dsa/mt7530.h |    1 +
 net/dsa/tag_mtk.c        |   15 +++++++++++++++
 3 files changed, 18 insertions(+), 7 deletions(-)

--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -685,11 +685,8 @@ mt7530_cpu_port_enable(struct mt7530_pri
 	/* Setup the MAC by default for the cpu port */
 	mt7530_write(priv, MT7530_PMCR_P(port), PMCR_CPUP_LINK);
 
-	/* Disable auto learning on the cpu port */
-	mt7530_set(priv, MT7530_PSC_P(port), SA_DIS);
-
-	/* Unknown unicast frame fordwarding to the cpu port */
-	mt7530_set(priv, MT7530_MFC, UNU_FFP(BIT(port)));
+	/* Unknown multicast frame forwarding to the cpu port */
+	mt7530_rmw(priv, MT7530_MFC, UNM_FFP_MASK, UNM_FFP(BIT(port)));
 
 	/* CPU port gets connected to all user ports of
 	 * the switch
@@ -1288,8 +1285,6 @@ mt7530_setup(struct dsa_switch *ds)
 	/* Enable and reset MIB counters */
 	mt7530_mib_reset(ds);
 
-	mt7530_clear(priv, MT7530_MFC, UNU_FFP_MASK);
-
 	for (i = 0; i < MT7530_NUM_PORTS; i++) {
 		/* Disable forwarding by default on all ports */
 		mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -34,6 +34,7 @@
 #define MT7530_MFC			0x10
 #define  BC_FFP(x)			(((x) & 0xff) << 24)
 #define  UNM_FFP(x)			(((x) & 0xff) << 16)
+#define  UNM_FFP_MASK			UNM_FFP(~0)
 #define  UNU_FFP(x)			(((x) & 0xff) << 8)
 #define  UNU_FFP_MASK			UNU_FFP(~0)
 
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -22,6 +22,7 @@
 #define MTK_HDR_XMIT_TAGGED_TPID_8100	1
 #define MTK_HDR_RECV_SOURCE_PORT_MASK	GENMASK(2, 0)
 #define MTK_HDR_XMIT_DP_BIT_MASK	GENMASK(5, 0)
+#define MTK_HDR_XMIT_SA_DIS		BIT(6)
 
 static struct sk_buff *mtk_tag_xmit(struct sk_buff *skb,
 				    struct net_device *dev)
@@ -29,6 +30,9 @@ static struct sk_buff *mtk_tag_xmit(stru
 	struct dsa_port *dp = dsa_slave_to_port(dev);
 	u8 *mtk_tag;
 	bool is_vlan_skb = true;
+	unsigned char *dest = eth_hdr(skb)->h_dest;
+	bool is_multicast_skb = is_multicast_ether_addr(dest) &&
+				!is_broadcast_ether_addr(dest);
 
 	/* Build the special tag after the MAC Source Address. If VLAN header
 	 * is present, it's required that VLAN header and special tag is
@@ -54,6 +58,10 @@ static struct sk_buff *mtk_tag_xmit(stru
 		     MTK_HDR_XMIT_UNTAGGED;
 	mtk_tag[1] = (1 << dp->index) & MTK_HDR_XMIT_DP_BIT_MASK;
 
+	/* Disable SA learning for multicast frames */
+	if (unlikely(is_multicast_skb))
+		mtk_tag[1] |= MTK_HDR_XMIT_SA_DIS;
+
 	/* Tag control information is kept for 802.1Q */
 	if (!is_vlan_skb) {
 		mtk_tag[2] = 0;
@@ -68,6 +76,9 @@ static struct sk_buff *mtk_tag_rcv(struc
 {
 	int port;
 	__be16 *phdr, hdr;
+	unsigned char *dest = eth_hdr(skb)->h_dest;
+	bool is_multicast_skb = is_multicast_ether_addr(dest) &&
+				!is_broadcast_ether_addr(dest);
 
 	if (unlikely(!pskb_may_pull(skb, MTK_HDR_LEN)))
 		return NULL;
@@ -93,6 +104,10 @@ static struct sk_buff *mtk_tag_rcv(struc
 	if (!skb->dev)
 		return NULL;
 
+	/* Only unicast or broadcast frames are offloaded */
+	if (likely(!is_multicast_skb))
+		skb->offload_fwd_mark = 1;
+
 	return skb;
 }
 

[PATCH 4.19 04/95] __netif_receive_skb_core: pass skb by reference

[Greg Kroah-Hartman]

From: Boris Sukholitko <boris.sukholitko@broadcom.com>

[ Upstream commit c0bbbdc32febd4f034ecbf3ea17865785b2c0652 ]

__netif_receive_skb_core may change the skb pointer passed into it (e.g.
in rx_handler). The original skb may be freed as a result of this
operation.

The callers of __netif_receive_skb_core may further process original skb
by using pt_prev pointer returned by __netif_receive_skb_core thus
leading to unpleasant effects.

The solution is to pass skb by reference into __netif_receive_skb_core.

v2: Added Fixes tag and comment regarding ppt_prev and skb invariant.

Fixes: 88eb1944e18c ("net: core: propagate SKB lists through packet_type lookup")
Signed-off-by: Boris Sukholitko <boris.sukholitko@broadcom.com>
Acked-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/core/dev.c |   20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4778,11 +4778,12 @@ static inline int nf_ingress(struct sk_b
 	return 0;
 }
 
-static int __netif_receive_skb_core(struct sk_buff *skb, bool pfmemalloc,
+static int __netif_receive_skb_core(struct sk_buff **pskb, bool pfmemalloc,
 				    struct packet_type **ppt_prev)
 {
 	struct packet_type *ptype, *pt_prev;
 	rx_handler_func_t *rx_handler;
+	struct sk_buff *skb = *pskb;
 	struct net_device *orig_dev;
 	bool deliver_exact = false;
 	int ret = NET_RX_DROP;
@@ -4813,8 +4814,10 @@ another_round:
 		ret2 = do_xdp_generic(rcu_dereference(skb->dev->xdp_prog), skb);
 		preempt_enable();
 
-		if (ret2 != XDP_PASS)
-			return NET_RX_DROP;
+		if (ret2 != XDP_PASS) {
+			ret = NET_RX_DROP;
+			goto out;
+		}
 		skb_reset_mac_len(skb);
 	}
 
@@ -4936,6 +4939,13 @@ drop:
 	}
 
 out:
+	/* The invariant here is that if *ppt_prev is not NULL
+	 * then skb should also be non-NULL.
+	 *
+	 * Apparently *ppt_prev assignment above holds this invariant due to
+	 * skb dereferencing near it.
+	 */
+	*pskb = skb;
 	return ret;
 }
 
@@ -4945,7 +4955,7 @@ static int __netif_receive_skb_one_core(
 	struct packet_type *pt_prev = NULL;
 	int ret;
 
-	ret = __netif_receive_skb_core(skb, pfmemalloc, &pt_prev);
+	ret = __netif_receive_skb_core(&skb, pfmemalloc, &pt_prev);
 	if (pt_prev)
 		ret = pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
 	return ret;
@@ -5021,7 +5031,7 @@ static void __netif_receive_skb_list_cor
 		struct packet_type *pt_prev = NULL;
 
 		skb_list_del_init(skb);
-		__netif_receive_skb_core(skb, pfmemalloc, &pt_prev);
+		__netif_receive_skb_core(&skb, pfmemalloc, &pt_prev);
 		if (!pt_prev)
 			continue;
 		if (pt_curr != pt_prev || od_curr != orig_dev) {

[PATCH 4.19 05/95] net: inet_csk: Fix so_reuseport bind-address cache in tb->fast*

[Greg Kroah-Hartman]

From: Martin KaFai Lau <kafai@fb.com>

[ Upstream commit 88d7fcfa3b1fe670f0412b95be785aafca63352b ]

The commit 637bc8bbe6c0 ("inet: reset tb->fastreuseport when adding a reuseport sk")
added a bind-address cache in tb->fast*.  The tb->fast* caches the address
of a sk which has successfully been binded with SO_REUSEPORT ON.  The idea
is to avoid the expensive conflict search in inet_csk_bind_conflict().

There is an issue with wildcard matching where sk_reuseport_match() should
have returned false but it is currently returning true.  It ends up
hiding bind conflict.  For example,

bind("[::1]:443"); /* without SO_REUSEPORT. Succeed. */
bind("[::2]:443"); /* with    SO_REUSEPORT. Succeed. */
bind("[::]:443");  /* with    SO_REUSEPORT. Still Succeed where it shouldn't */

The last bind("[::]:443") with SO_REUSEPORT on should have failed because
it should have a conflict with the very first bind("[::1]:443") which
has SO_REUSEPORT off.  However, the address "[::2]" is cached in
tb->fast* in the second bind. In the last bind, the sk_reuseport_match()
returns true because the binding sk's wildcard addr "[::]" matches with
the "[::2]" cached in tb->fast*.

The correct bind conflict is reported by removing the second
bind such that tb->fast* cache is not involved and forces the
bind("[::]:443") to go through the inet_csk_bind_conflict():

bind("[::1]:443"); /* without SO_REUSEPORT. Succeed. */
bind("[::]:443");  /* with    SO_REUSEPORT. -EADDRINUSE */

The expected behavior for sk_reuseport_match() is, it should only allow
the "cached" tb->fast* address to be used as a wildcard match but not
the address of the binding sk.  To do that, the current
"bool match_wildcard" arg is split into
"bool match_sk1_wildcard" and "bool match_sk2_wildcard".

This change only affects the sk_reuseport_match() which is only
used by inet_csk (e.g. TCP).
The other use cases are calling inet_rcv_saddr_equal() and
this patch makes it pass the same "match_wildcard" arg twice to
the "ipv[46]_rcv_saddr_equal(..., match_wildcard, match_wildcard)".

Cc: Josef Bacik <jbacik@fb.com>
Fixes: 637bc8bbe6c0 ("inet: reset tb->fastreuseport when adding a reuseport sk")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv4/inet_connection_sock.c |   43 ++++++++++++++++++++++------------------
 1 file changed, 24 insertions(+), 19 deletions(-)

--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -28,17 +28,19 @@
 #include <net/addrconf.h>
 
 #if IS_ENABLED(CONFIG_IPV6)
-/* match_wildcard == true:  IPV6_ADDR_ANY equals to any IPv6 addresses if IPv6
- *                          only, and any IPv4 addresses if not IPv6 only
- * match_wildcard == false: addresses must be exactly the same, i.e.
- *                          IPV6_ADDR_ANY only equals to IPV6_ADDR_ANY,
- *                          and 0.0.0.0 equals to 0.0.0.0 only
+/* match_sk*_wildcard == true:  IPV6_ADDR_ANY equals to any IPv6 addresses
+ *				if IPv6 only, and any IPv4 addresses
+ *				if not IPv6 only
+ * match_sk*_wildcard == false: addresses must be exactly the same, i.e.
+ *				IPV6_ADDR_ANY only equals to IPV6_ADDR_ANY,
+ *				and 0.0.0.0 equals to 0.0.0.0 only
  */
 static bool ipv6_rcv_saddr_equal(const struct in6_addr *sk1_rcv_saddr6,
 				 const struct in6_addr *sk2_rcv_saddr6,
 				 __be32 sk1_rcv_saddr, __be32 sk2_rcv_saddr,
 				 bool sk1_ipv6only, bool sk2_ipv6only,
-				 bool match_wildcard)
+				 bool match_sk1_wildcard,
+				 bool match_sk2_wildcard)
 {
 	int addr_type = ipv6_addr_type(sk1_rcv_saddr6);
 	int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED;
@@ -48,8 +50,8 @@ static bool ipv6_rcv_saddr_equal(const s
 		if (!sk2_ipv6only) {
 			if (sk1_rcv_saddr == sk2_rcv_saddr)
 				return true;
-			if (!sk1_rcv_saddr || !sk2_rcv_saddr)
-				return match_wildcard;
+			return (match_sk1_wildcard && !sk1_rcv_saddr) ||
+				(match_sk2_wildcard && !sk2_rcv_saddr);
 		}
 		return false;
 	}
@@ -57,11 +59,11 @@ static bool ipv6_rcv_saddr_equal(const s
 	if (addr_type == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY)
 		return true;
 
-	if (addr_type2 == IPV6_ADDR_ANY && match_wildcard &&
+	if (addr_type2 == IPV6_ADDR_ANY && match_sk2_wildcard &&
 	    !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
 		return true;
 
-	if (addr_type == IPV6_ADDR_ANY && match_wildcard &&
+	if (addr_type == IPV6_ADDR_ANY && match_sk1_wildcard &&
 	    !(sk1_ipv6only && addr_type2 == IPV6_ADDR_MAPPED))
 		return true;
 
@@ -73,18 +75,19 @@ static bool ipv6_rcv_saddr_equal(const s
 }
 #endif
 
-/* match_wildcard == true:  0.0.0.0 equals to any IPv4 addresses
- * match_wildcard == false: addresses must be exactly the same, i.e.
- *                          0.0.0.0 only equals to 0.0.0.0
+/* match_sk*_wildcard == true:  0.0.0.0 equals to any IPv4 addresses
+ * match_sk*_wildcard == false: addresses must be exactly the same, i.e.
+ *				0.0.0.0 only equals to 0.0.0.0
  */
 static bool ipv4_rcv_saddr_equal(__be32 sk1_rcv_saddr, __be32 sk2_rcv_saddr,
-				 bool sk2_ipv6only, bool match_wildcard)
+				 bool sk2_ipv6only, bool match_sk1_wildcard,
+				 bool match_sk2_wildcard)
 {
 	if (!sk2_ipv6only) {
 		if (sk1_rcv_saddr == sk2_rcv_saddr)
 			return true;
-		if (!sk1_rcv_saddr || !sk2_rcv_saddr)
-			return match_wildcard;
+		return (match_sk1_wildcard && !sk1_rcv_saddr) ||
+			(match_sk2_wildcard && !sk2_rcv_saddr);
 	}
 	return false;
 }
@@ -100,10 +103,12 @@ bool inet_rcv_saddr_equal(const struct s
 					    sk2->sk_rcv_saddr,
 					    ipv6_only_sock(sk),
 					    ipv6_only_sock(sk2),
+					    match_wildcard,
 					    match_wildcard);
 #endif
 	return ipv4_rcv_saddr_equal(sk->sk_rcv_saddr, sk2->sk_rcv_saddr,
-				    ipv6_only_sock(sk2), match_wildcard);
+				    ipv6_only_sock(sk2), match_wildcard,
+				    match_wildcard);
 }
 EXPORT_SYMBOL(inet_rcv_saddr_equal);
 
@@ -274,10 +279,10 @@ static inline int sk_reuseport_match(str
 					    tb->fast_rcv_saddr,
 					    sk->sk_rcv_saddr,
 					    tb->fast_ipv6_only,
-					    ipv6_only_sock(sk), true);
+					    ipv6_only_sock(sk), true, false);
 #endif
 	return ipv4_rcv_saddr_equal(tb->fast_rcv_saddr, sk->sk_rcv_saddr,
-				    ipv6_only_sock(sk), true);
+				    ipv6_only_sock(sk), true, false);
 }
 
 /* Obtain a reference to a local port for the given sock,

[PATCH 4.19 06/95] net: ipip: fix wrong address family in init error path

[Greg Kroah-Hartman]

From: Vadim Fedorenko <vfedorenko@novek.ru>

[ Upstream commit 57ebc8f08504f176eb0f25b3e0fde517dec61a4f ]

In case of error with MPLS support the code is misusing AF_INET
instead of AF_MPLS.

Fixes: 1b69e7e6c4da ("ipip: support MPLS over IPv4")
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv4/ipip.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -704,7 +704,7 @@ out:
 
 rtnl_link_failed:
 #if IS_ENABLED(CONFIG_MPLS)
-	xfrm4_tunnel_deregister(&mplsip_handler, AF_INET);
+	xfrm4_tunnel_deregister(&mplsip_handler, AF_MPLS);
 xfrm_tunnel_mplsip_failed:
 
 #endif

[PATCH 4.19 07/95] net/mlx5: Add command entry handling completion

[Greg Kroah-Hartman]

From: Moshe Shemesh <moshe@mellanox.com>

[ Upstream commit 17d00e839d3b592da9659c1977d45f85b77f986a ]

When FW response to commands is very slow and all command entries in
use are waiting for completion we can have a race where commands can get
timeout before they get out of the queue and handled. Timeout
completion on uninitialized command will cause releasing command's
buffers before accessing it for initialization and then we will get NULL
pointer exception while trying access it. It may also cause releasing
buffers of another command since we may have timeout completion before
even allocating entry index for this command.
Add entry handling completion to avoid this race.

Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/cmd.c |   14 ++++++++++++++
 include/linux/mlx5/driver.h                   |    1 +
 2 files changed, 15 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -835,6 +835,7 @@ static void cmd_work_handler(struct work
 	int alloc_ret;
 	int cmd_mode;
 
+	complete(&ent->handling);
 	sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem;
 	down(sem);
 	if (!ent->page_queue) {
@@ -953,6 +954,11 @@ static int wait_func(struct mlx5_core_de
 	struct mlx5_cmd *cmd = &dev->cmd;
 	int err;
 
+	if (!wait_for_completion_timeout(&ent->handling, timeout) &&
+	    cancel_work_sync(&ent->work)) {
+		ent->ret = -ECANCELED;
+		goto out_err;
+	}
 	if (cmd->mode == CMD_MODE_POLLING || ent->polling) {
 		wait_for_completion(&ent->done);
 	} else if (!wait_for_completion_timeout(&ent->done, timeout)) {
@@ -960,12 +966,17 @@ static int wait_func(struct mlx5_core_de
 		mlx5_cmd_comp_handler(dev, 1UL << ent->idx, true);
 	}
 
+out_err:
 	err = ent->ret;
 
 	if (err == -ETIMEDOUT) {
 		mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n",
 			       mlx5_command_str(msg_to_opcode(ent->in)),
 			       msg_to_opcode(ent->in));
+	} else if (err == -ECANCELED) {
+		mlx5_core_warn(dev, "%s(0x%x) canceled on out of queue timeout.\n",
+			       mlx5_command_str(msg_to_opcode(ent->in)),
+			       msg_to_opcode(ent->in));
 	}
 	mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n",
 		      err, deliv_status_to_str(ent->status), ent->status);
@@ -1001,6 +1012,7 @@ static int mlx5_cmd_invoke(struct mlx5_c
 	ent->token = token;
 	ent->polling = force_polling;
 
+	init_completion(&ent->handling);
 	if (!callback)
 		init_completion(&ent->done);
 
@@ -1020,6 +1032,8 @@ static int mlx5_cmd_invoke(struct mlx5_c
 	err = wait_func(dev, ent);
 	if (err == -ETIMEDOUT)
 		goto out;
+	if (err == -ECANCELED)
+		goto out_free;
 
 	ds = ent->ts2 - ent->ts1;
 	op = MLX5_GET(mbox_in, in->first.data, opcode);
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -902,6 +902,7 @@ struct mlx5_cmd_work_ent {
 	struct delayed_work	cb_timeout_work;
 	void		       *context;
 	int			idx;
+	struct completion	handling;
 	struct completion	done;
 	struct mlx5_cmd        *cmd;
 	struct work_struct	work;

[PATCH 4.19 08/95] net: qrtr: Fix passing invalid reference to qrtr_local_enqueue()

[Greg Kroah-Hartman]

From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

[ Upstream commit d28ea1fbbf437054ef339afec241019f2c4e2bb6 ]

Once the traversal of the list is completed with list_for_each_entry(),
the iterator (node) will point to an invalid object. So passing this to
qrtr_local_enqueue() which is outside of the iterator block is erroneous
eventhough the object is not used.

So fix this by passing NULL to qrtr_local_enqueue().

Fixes: bdabad3e363d ("net: Add Qualcomm IPC router")
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/qrtr/qrtr.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -718,7 +718,7 @@ static int qrtr_bcast_enqueue(struct qrt
 	}
 	mutex_unlock(&qrtr_node_lock);
 
-	qrtr_local_enqueue(node, skb, type, from, to);
+	qrtr_local_enqueue(NULL, skb, type, from, to);
 
 	return 0;
 }

[PATCH 4.19 09/95] net: revert "net: get rid of an signed integer overflow in ip_idents_reserve()"

[Greg Kroah-Hartman]

From: Yuqi Jin <jinyuqi@huawei.com>

[ Upstream commit a6211caa634da39d861a47437ffcda8b38ef421b ]

Commit adb03115f459 ("net: get rid of an signed integer overflow in ip_idents_reserve()")
used atomic_cmpxchg to replace "atomic_add_return" inside the function
"ip_idents_reserve". The reason was to avoid UBSAN warning.
However, this change has caused performance degrade and in GCC-8,
fno-strict-overflow is now mapped to -fwrapv -fwrapv-pointer
and signed integer overflow is now undefined by default at all
optimization levels[1]. Moreover, it was a bug in UBSAN vs -fwrapv
/-fno-strict-overflow, so Let's revert it safely.

[1] https://gcc.gnu.org/gcc-8/changes.html

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Suggested-by: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jiong Wang <jiongwang@huawei.com>
Signed-off-by: Yuqi Jin <jinyuqi@huawei.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv4/route.c |   14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -484,18 +484,16 @@ u32 ip_idents_reserve(u32 hash, int segs
 	atomic_t *p_id = ip_idents + hash % IP_IDENTS_SZ;
 	u32 old = READ_ONCE(*p_tstamp);
 	u32 now = (u32)jiffies;
-	u32 new, delta = 0;
+	u32 delta = 0;
 
 	if (old != now && cmpxchg(p_tstamp, old, now) == old)
 		delta = prandom_u32_max(now - old);
 
-	/* Do not use atomic_add_return() as it makes UBSAN unhappy */
-	do {
-		old = (u32)atomic_read(p_id);
-		new = old + delta + segs;
-	} while (atomic_cmpxchg(p_id, old, new) != old);
-
-	return new - segs;
+	/* If UBSAN reports an error there, please make sure your compiler
+	 * supports -fno-strict-overflow before reporting it that was a bug
+	 * in UBSAN, and it has been fixed in GCC-8.
+	 */
+	return atomic_add_return(segs + delta, p_id) - segs;
 }
 EXPORT_SYMBOL(ip_idents_reserve);
 

[PATCH 4.19 10/95] net sched: fix reporting the first-time use timestamp

[Greg Kroah-Hartman]

From: Roman Mashak <mrv@mojatatu.com>

[ Upstream commit b15e62631c5f19fea9895f7632dae9c1b27fe0cd ]

When a new action is installed, firstuse field of 'tcf_t' is explicitly set
to 0. Value of zero means "new action, not yet used"; as a packet hits the
action, 'firstuse' is stamped with the current jiffies value.

tcf_tm_dump() should return 0 for firstuse if action has not yet been hit.

Fixes: 48d8ee1694dd ("net sched actions: aggregate dumping of actions timeinfo")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/net/act_api.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -67,7 +67,8 @@ static inline void tcf_tm_dump(struct tc
 {
 	dtm->install = jiffies_to_clock_t(jiffies - stm->install);
 	dtm->lastuse = jiffies_to_clock_t(jiffies - stm->lastuse);
-	dtm->firstuse = jiffies_to_clock_t(jiffies - stm->firstuse);
+	dtm->firstuse = stm->firstuse ?
+		jiffies_to_clock_t(jiffies - stm->firstuse) : 0;
 	dtm->expires = jiffies_to_clock_t(stm->expires);
 }
 

[PATCH 4.19 11/95] r8152: support additional Microsoft Surface Ethernet Adapter variant

[Greg Kroah-Hartman]

From: Marc Payne <marc.payne@mdpsys.co.uk>

[ Upstream commit c27a204383616efba5a4194075e90819961ff66a ]

Device id 0927 is the RTL8153B-based component of the 'Surface USB-C to
Ethernet and USB Adapter' and may be used as a component of other devices
in future. Tested and working with the r8152 driver.

Update the cdc_ether blacklist due to the RTL8153 'network jam on suspend'
issue which this device will cause (personally confirmed).

Signed-off-by: Marc Payne <marc.payne@mdpsys.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/usb/cdc_ether.c |   11 +++++++++--
 drivers/net/usb/r8152.c     |    1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -821,14 +821,21 @@ static const struct usb_device_id	produc
 	.driver_info = 0,
 },
 
-/* Microsoft Surface 3 dock (based on Realtek RTL8153) */
+/* Microsoft Surface Ethernet Adapter (based on Realtek RTL8153) */
 {
 	USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x07c6, USB_CLASS_COMM,
 			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 	.driver_info = 0,
 },
 
-	/* TP-LINK UE300 USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
+/* Microsoft Surface Ethernet Adapter (based on Realtek RTL8153B) */
+{
+	USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x0927, USB_CLASS_COMM,
+			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
+	.driver_info = 0,
+},
+
+/* TP-LINK UE300 USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
 {
 	USB_DEVICE_AND_INTERFACE_INFO(TPLINK_VENDOR_ID, 0x0601, USB_CLASS_COMM,
 			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -5344,6 +5344,7 @@ static const struct usb_device_id rtl815
 	{REALTEK_USB_DEVICE(VENDOR_ID_REALTEK, 0x8153)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_MICROSOFT, 0x07ab)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_MICROSOFT, 0x07c6)},
+	{REALTEK_USB_DEVICE(VENDOR_ID_MICROSOFT, 0x0927)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_SAMSUNG, 0xa101)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x304f)},
 	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3062)},

[PATCH 4.19 12/95] sctp: Dont add the shutdown timer if its already been added

[Greg Kroah-Hartman]

From: Neil Horman <nhorman@tuxdriver.com>

[ Upstream commit 20a785aa52c82246055a089e55df9dac47d67da1 ]

This BUG halt was reported a while back, but the patch somehow got
missed:

PID: 2879   TASK: c16adaa0  CPU: 1   COMMAND: "sctpn"
 #0 [f418dd28] crash_kexec at c04a7d8c
 #1 [f418dd7c] oops_end at c0863e02
 #2 [f418dd90] do_invalid_op at c040aaca
 #3 [f418de28] error_code (via invalid_op) at c08631a5
    EAX: f34baac0  EBX: 00000090  ECX: f418deb0  EDX: f5542950  EBP: 00000000
    DS:  007b      ESI: f34ba800  ES:  007b      EDI: f418dea0  GS:  00e0
    CS:  0060      EIP: c046fa5e  ERR: ffffffff  EFLAGS: 00010286
 #4 [f418de5c] add_timer at c046fa5e
 #5 [f418de68] sctp_do_sm at f8db8c77 [sctp]
 #6 [f418df30] sctp_primitive_SHUTDOWN at f8dcc1b5 [sctp]
 #7 [f418df48] inet_shutdown at c080baf9
 #8 [f418df5c] sys_shutdown at c079eedf
 #9 [f418df70] sys_socketcall at c079fe88
    EAX: ffffffda  EBX: 0000000d  ECX: bfceea90  EDX: 0937af98
    DS:  007b      ESI: 0000000c  ES:  007b      EDI: b7150ae4
    SS:  007b      ESP: bfceea7c  EBP: bfceeaa8  GS:  0033
    CS:  0073      EIP: b775c424  ERR: 00000066  EFLAGS: 00000282

It appears that the side effect that starts the shutdown timer was processed
multiple times, which can happen as multiple paths can trigger it.  This of
course leads to the BUG halt in add_timer getting called.

Fix seems pretty straightforward, just check before the timer is added if its
already been started.  If it has mod the timer instead to min(current
expiration, new expiration)

Its been tested but not confirmed to fix the problem, as the issue has only
occured in production environments where test kernels are enjoined from being
installed.  It appears to be a sane fix to me though.  Also, recentely,
Jere found a reproducer posted on list to confirm that this resolves the
issues

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Vlad Yasevich <vyasevich@gmail.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: jere.leppanen@nokia.com
CC: marcelo.leitner@gmail.com
CC: netdev@vger.kernel.org
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sctp/sm_sideeffect.c |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -1537,9 +1537,17 @@ static int sctp_cmd_interpreter(enum sct
 			timeout = asoc->timeouts[cmd->obj.to];
 			BUG_ON(!timeout);
 
-			timer->expires = jiffies + timeout;
-			sctp_association_hold(asoc);
-			add_timer(timer);
+			/*
+			 * SCTP has a hard time with timer starts.  Because we process
+			 * timer starts as side effects, it can be hard to tell if we
+			 * have already started a timer or not, which leads to BUG
+			 * halts when we call add_timer. So here, instead of just starting
+			 * a timer, if the timer is already started, and just mod
+			 * the timer with the shorter of the two expiration times
+			 */
+			if (!timer_pending(timer))
+				sctp_association_hold(asoc);
+			timer_reduce(timer, jiffies + timeout);
 			break;
 
 		case SCTP_CMD_TIMER_RESTART:

[PATCH 4.19 13/95] sctp: Start shutdown on association restart if in SHUTDOWN-SENT state and socket is closed

[Greg Kroah-Hartman]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=UTF-8, Size: 2778 bytes --]

From: "Jere Leppänen" <jere.leppanen@nokia.com>

[ Upstream commit d3e8e4c11870413789f029a71e72ae6e971fe678 ]

Commit bdf6fa52f01b ("sctp: handle association restarts when the
socket is closed.") starts shutdown when an association is restarted,
if in SHUTDOWN-PENDING state and the socket is closed. However, the
rationale stated in that commit applies also when in SHUTDOWN-SENT
state - we don't want to move an association to ESTABLISHED state when
the socket has been closed, because that results in an association
that is unreachable from user space.

The problem scenario:

1.  Client crashes and/or restarts.

2.  Server (using one-to-one socket) calls close(). SHUTDOWN is lost.

3.  Client reconnects using the same addresses and ports.

4.  Server's association is restarted. The association and the socket
    move to ESTABLISHED state, even though the server process has
    closed its descriptor.

Also, after step 4 when the server process exits, some resources are
leaked in an attempt to release the underlying inet sock structure in
ESTABLISHED state:

    IPv4: Attempt to release TCP socket in state 1 00000000377288c7

Fix by acting the same way as in SHUTDOWN-PENDING state. That is, if
an association is restarted in SHUTDOWN-SENT state and the socket is
closed, then start shutdown and don't move the association or the
socket to ESTABLISHED state.

Fixes: bdf6fa52f01b ("sctp: handle association restarts when the socket is closed.")
Signed-off-by: Jere Leppänen <jere.leppanen@nokia.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sctp/sm_statefuns.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -1871,12 +1871,13 @@ static enum sctp_disposition sctp_sf_do_
 	/* Update the content of current association. */
 	sctp_add_cmd_sf(commands, SCTP_CMD_UPDATE_ASSOC, SCTP_ASOC(new_asoc));
 	sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, SCTP_ULPEVENT(ev));
-	if (sctp_state(asoc, SHUTDOWN_PENDING) &&
+	if ((sctp_state(asoc, SHUTDOWN_PENDING) ||
+	     sctp_state(asoc, SHUTDOWN_SENT)) &&
 	    (sctp_sstate(asoc->base.sk, CLOSING) ||
 	     sock_flag(asoc->base.sk, SOCK_DEAD))) {
-		/* if were currently in SHUTDOWN_PENDING, but the socket
-		 * has been closed by user, don't transition to ESTABLISHED.
-		 * Instead trigger SHUTDOWN bundled with COOKIE_ACK.
+		/* If the socket has been closed by user, don't
+		 * transition to ESTABLISHED. Instead trigger SHUTDOWN
+		 * bundled with COOKIE_ACK.
 		 */
 		sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
 		return sctp_sf_do_9_2_start_shutdown(net, ep, asoc,

[PATCH 4.19 14/95] net/mlx5e: Update netdev txq on completions during closure

[Greg Kroah-Hartman]

From: Moshe Shemesh <moshe@mellanox.com>

[ Upstream commit 5e911e2c06bd8c17df29147a5e2d4b17fafda024 ]

On sq closure when we free its descriptors, we should also update netdev
txq on completions which would not arrive. Otherwise if we reopen sqs
and attach them back, for example on fw fatal recovery flow, we may get
tx timeout.

Fixes: 29429f3300a3 ("net/mlx5e: Timeout if SQ doesn't flush during close")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tx.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -595,8 +595,9 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *c
 void mlx5e_free_txqsq_descs(struct mlx5e_txqsq *sq)
 {
 	struct mlx5e_tx_wqe_info *wi;
+	u32 nbytes = 0;
+	u16 ci, npkts = 0;
 	struct sk_buff *skb;
-	u16 ci;
 	int i;
 
 	while (sq->cc != sq->pc) {
@@ -617,8 +618,11 @@ void mlx5e_free_txqsq_descs(struct mlx5e
 		}
 
 		dev_kfree_skb_any(skb);
+		npkts++;
+		nbytes += wi->num_bytes;
 		sq->cc += wi->num_wqebbs;
 	}
+	netdev_tx_completed_queue(sq->txq, npkts, nbytes);
 }
 
 #ifdef CONFIG_MLX5_CORE_IPOIB

[PATCH 4.19 15/95] net/mlx5: Annotate mutex destroy for root ns

[Greg Kroah-Hartman]

From: Roi Dayan <roid@mellanox.com>

commit 9ca415399dae133b00273a4283ef31d003a6818d upstream.

Invoke mutex_destroy() to catch any errors.

Fixes: 2cc43b494a6c ("net/mlx5_core: Managing root flow table")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/mellanox/mlx5/core/fs_core.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -364,6 +364,12 @@ static void del_sw_ns(struct fs_node *no
 
 static void del_sw_prio(struct fs_node *node)
 {
+	struct mlx5_flow_root_namespace *root_ns;
+	struct mlx5_flow_namespace *ns;
+
+	fs_get_obj(ns, node);
+	root_ns = container_of(ns, struct mlx5_flow_root_namespace, ns);
+	mutex_destroy(&root_ns->chain_lock);
 	kfree(node);
 }
 

[PATCH 4.19 16/95] net: sun: fix missing release regions in cas_init_one().

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000273@umn.edu>

commit 5a730153984dd13f82ffae93d7170d76eba204e9 upstream.

In cas_init_one(), "pdev" is requested by "pci_request_regions", but it
was not released after a call of the function “pci_write_config_byte”
failed. Thus replace the jump target “err_write_cacheline” by
"err_out_free_res".

Fixes: 1f26dac32057 ("[NET]: Add Sun Cassini driver.")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/sun/cassini.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/net/ethernet/sun/cassini.c
+++ b/drivers/net/ethernet/sun/cassini.c
@@ -4971,7 +4971,7 @@ static int cas_init_one(struct pci_dev *
 					  cas_cacheline_size)) {
 			dev_err(&pdev->dev, "Could not set PCI cache "
 			       "line size\n");
-			goto err_write_cacheline;
+			goto err_out_free_res;
 		}
 	}
 #endif
@@ -5144,7 +5144,6 @@ err_out_iounmap:
 err_out_free_res:
 	pci_release_regions(pdev);
 
-err_write_cacheline:
 	/* Try to restore it in case the error occurred after we
 	 * set it.
 	 */

[PATCH 4.19 17/95] net/mlx4_core: fix a memory leak bug.

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000273@umn.edu>

commit febfd9d3c7f74063e8e630b15413ca91b567f963 upstream.

In function mlx4_opreq_action(), pointer "mailbox" is not released,
when mlx4_cmd_box() return and error, causing a memory leak bug.
Fix this issue by going to "out" label, mlx4_free_cmd_mailbox() can
free this pointer.

Fixes: fe6f700d6cbb ("net/mlx4_core: Respond to operation request by firmware")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/mellanox/mlx4/fw.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -2731,7 +2731,7 @@ void mlx4_opreq_action(struct work_struc
 		if (err) {
 			mlx4_err(dev, "Failed to retrieve required operation: %d\n",
 				 err);
-			return;
+			goto out;
 		}
 		MLX4_GET(modifier, outbox, GET_OP_REQ_MODIFIER_OFFSET);
 		MLX4_GET(token, outbox, GET_OP_REQ_TOKEN_OFFSET);

[PATCH 4.19 18/95] mlxsw: spectrum: Fix use-after-free of split/unsplit/type_set in case reload fails

[Greg Kroah-Hartman]

From: Jiri Pirko <jiri@mellanox.com>

commit 4340f42f207eacb81e7a6b6bb1e3b6afad9a2e26 upstream.

In case of reload fail, the mlxsw_sp->ports contains a pointer to a
freed memory (either by reload_down() or reload_up() error path).
Fix this by initializing the pointer to NULL and checking it before
dereferencing in split/unsplit/type_set callpaths.

Fixes: 24cc68ad6c46 ("mlxsw: core: Add support for reload")
Reported-by: Danielle Ratson <danieller@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c |   14 ++++++++++++--
 drivers/net/ethernet/mellanox/mlxsw/switchx2.c |    8 ++++++++
 2 files changed, 20 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3126,6 +3126,7 @@ static void mlxsw_sp_ports_remove(struct
 			mlxsw_sp_port_remove(mlxsw_sp, i);
 	kfree(mlxsw_sp->port_to_module);
 	kfree(mlxsw_sp->ports);
+	mlxsw_sp->ports = NULL;
 }
 
 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
@@ -3174,6 +3175,7 @@ err_port_module_info_get:
 	kfree(mlxsw_sp->port_to_module);
 err_port_to_module_alloc:
 	kfree(mlxsw_sp->ports);
+	mlxsw_sp->ports = NULL;
 	return err;
 }
 
@@ -3228,6 +3230,14 @@ static void mlxsw_sp_port_unsplit_create
 	}
 }
 
+static struct mlxsw_sp_port *
+mlxsw_sp_port_get_by_local_port(struct mlxsw_sp *mlxsw_sp, u8 local_port)
+{
+	if (mlxsw_sp->ports && mlxsw_sp->ports[local_port])
+		return mlxsw_sp->ports[local_port];
+	return NULL;
+}
+
 static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
 			       unsigned int count,
 			       struct netlink_ext_ack *extack)
@@ -3238,7 +3248,7 @@ static int mlxsw_sp_port_split(struct ml
 	int i;
 	int err;
 
-	mlxsw_sp_port = mlxsw_sp->ports[local_port];
+	mlxsw_sp_port = mlxsw_sp_port_get_by_local_port(mlxsw_sp, local_port);
 	if (!mlxsw_sp_port) {
 		dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
 			local_port);
@@ -3305,7 +3315,7 @@ static int mlxsw_sp_port_unsplit(struct
 	unsigned int count;
 	int i;
 
-	mlxsw_sp_port = mlxsw_sp->ports[local_port];
+	mlxsw_sp_port = mlxsw_sp_port_get_by_local_port(mlxsw_sp, local_port);
 	if (!mlxsw_sp_port) {
 		dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
 			local_port);
--- a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
@@ -1289,6 +1289,7 @@ static void mlxsw_sx_ports_remove(struct
 		if (mlxsw_sx_port_created(mlxsw_sx, i))
 			mlxsw_sx_port_remove(mlxsw_sx, i);
 	kfree(mlxsw_sx->ports);
+	mlxsw_sx->ports = NULL;
 }
 
 static int mlxsw_sx_ports_create(struct mlxsw_sx *mlxsw_sx)
@@ -1323,6 +1324,7 @@ err_port_module_info_get:
 		if (mlxsw_sx_port_created(mlxsw_sx, i))
 			mlxsw_sx_port_remove(mlxsw_sx, i);
 	kfree(mlxsw_sx->ports);
+	mlxsw_sx->ports = NULL;
 	return err;
 }
 
@@ -1406,6 +1408,12 @@ static int mlxsw_sx_port_type_set(struct
 	u8 module, width;
 	int err;
 
+	if (!mlxsw_sx->ports || !mlxsw_sx->ports[local_port]) {
+		dev_err(mlxsw_sx->bus_info->dev, "Port number \"%d\" does not exist\n",
+			local_port);
+		return -EINVAL;
+	}
+
 	if (new_type == DEVLINK_PORT_TYPE_AUTO)
 		return -EOPNOTSUPP;
 

[PATCH 4.19 19/95] ARM: dts: rockchip: fix phy nodename for rk3228-evb

[Greg Kroah-Hartman]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 287e0d538fcec2f6e8eb1e565bf0749f3b90186d ]

A test with the command below gives for example this error:

arch/arm/boot/dts/rk3228-evb.dt.yaml: phy@0:
'#phy-cells' is a required property

The phy nodename is normally used by a phy-handle.
This node is however compatible with
"ethernet-phy-id1234.d400", "ethernet-phy-ieee802.3-c22"
which is just been added to 'ethernet-phy.yaml'.
So change nodename to 'ethernet-phy' for which '#phy-cells'
is not a required property

make ARCH=arm dtbs_check
DT_SCHEMA_FILES=~/.local/lib/python3.5/site-packages/dtschema/schemas/
phy/phy-provider.yaml

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20200416170321.4216-1-jbx6244@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rk3228-evb.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/rk3228-evb.dts b/arch/arm/boot/dts/rk3228-evb.dts
index 5670b33fd1bd..aed879db6c15 100644
--- a/arch/arm/boot/dts/rk3228-evb.dts
+++ b/arch/arm/boot/dts/rk3228-evb.dts
@@ -46,7 +46,7 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		phy: phy@0 {
+		phy: ethernet-phy@0 {
 			compatible = "ethernet-phy-id1234.d400", "ethernet-phy-ieee802.3-c22";
 			reg = <0>;
 			clocks = <&cru SCLK_MAC_PHY>;
-- 
2.25.1

[PATCH 4.19 20/95] arm64: dts: rockchip: fix status for &gmac2phy in rk3328-evb.dts

[Greg Kroah-Hartman]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit c617ed88502d0b05149e7f32f3b3fd8a0663f7e2 ]

The status was removed of the '&gmac2phy' node with the apply
of a patch long time ago, so fix status for '&gmac2phy'
in 'rk3328-evb.dts'.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20200425122345.12902-2-jbx6244@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3328-evb.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328-evb.dts b/arch/arm64/boot/dts/rockchip/rk3328-evb.dts
index 212dd8159da9..d89f3451ace5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-evb.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-evb.dts
@@ -86,7 +86,7 @@
 	assigned-clock-rate = <50000000>;
 	assigned-clocks = <&cru SCLK_MAC2PHY>;
 	assigned-clock-parents = <&cru SCLK_MAC2PHY_SRC>;
-
+	status = "okay";
 };
 
 &i2c1 {
-- 
2.25.1

[PATCH 4.19 21/95] arm64: dts: rockchip: swap interrupts interrupt-names rk3399 gpu node

[Greg Kroah-Hartman]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit c604fd810bda667bdc20b2c041917baa7803e0fb ]

Dts files with Rockchip rk3399 'gpu' nodes were manually verified.
In order to automate this process arm,mali-midgard.txt
has been converted to yaml. In the new setup dtbs_check with
arm,mali-midgard.yaml expects interrupts and interrupt-names values
in the same order. Fix this for rk3399.

make ARCH=arm64 dtbs_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/gpu/
arm,mali-midgard.yaml

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20200425143837.18706-1-jbx6244@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 451f00a631c4..f14e8c5c41ac 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1817,10 +1817,10 @@
 	gpu: gpu@ff9a0000 {
 		compatible = "rockchip,rk3399-mali", "arm,mali-t860";
 		reg = <0x0 0xff9a0000 0x0 0x10000>;
-		interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH 0>,
-			     <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH 0>,
-			     <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH 0>;
-		interrupt-names = "gpu", "job", "mmu";
+		interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH 0>,
+			     <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH 0>,
+			     <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH 0>;
+		interrupt-names = "job", "mmu", "gpu";
 		clocks = <&cru ACLK_GPU>;
 		power-domains = <&power RK3399_PD_GPU>;
 		status = "disabled";
-- 
2.25.1

[PATCH 4.19 22/95] ARM: dts: rockchip: swap clock-names of gpu nodes

[Greg Kroah-Hartman]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit b14f3898d2c25a9b47a61fb879d0b1f3af92c59b ]

Dts files with Rockchip 'gpu' nodes were manually verified.
In order to automate this process arm,mali-utgard.txt
has been converted to yaml. In the new setup dtbs_check with
arm,mali-utgard.yaml expects clock-names values
in the same order, so fix that.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20200425192500.1808-1-jbx6244@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rk3036.dtsi | 2 +-
 arch/arm/boot/dts/rk322x.dtsi | 2 +-
 arch/arm/boot/dts/rk3xxx.dtsi | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi
index d560fc4051c5..db612271371b 100644
--- a/arch/arm/boot/dts/rk3036.dtsi
+++ b/arch/arm/boot/dts/rk3036.dtsi
@@ -128,7 +128,7 @@
 		assigned-clocks = <&cru SCLK_GPU>;
 		assigned-clock-rates = <100000000>;
 		clocks = <&cru SCLK_GPU>, <&cru SCLK_GPU>;
-		clock-names = "core", "bus";
+		clock-names = "bus", "core";
 		resets = <&cru SRST_GPU>;
 		status = "disabled";
 	};
diff --git a/arch/arm/boot/dts/rk322x.dtsi b/arch/arm/boot/dts/rk322x.dtsi
index cd8f2a3b0e91..bada942ef38d 100644
--- a/arch/arm/boot/dts/rk322x.dtsi
+++ b/arch/arm/boot/dts/rk322x.dtsi
@@ -539,7 +539,7 @@
 				  "pp1",
 				  "ppmmu1";
 		clocks = <&cru ACLK_GPU>, <&cru ACLK_GPU>;
-		clock-names = "core", "bus";
+		clock-names = "bus", "core";
 		resets = <&cru SRST_GPU_A>;
 		status = "disabled";
 	};
diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi
index d752dc611fd7..86a0d98d28ff 100644
--- a/arch/arm/boot/dts/rk3xxx.dtsi
+++ b/arch/arm/boot/dts/rk3xxx.dtsi
@@ -84,7 +84,7 @@
 		compatible = "arm,mali-400";
 		reg = <0x10090000 0x10000>;
 		clocks = <&cru ACLK_GPU>, <&cru ACLK_GPU>;
-		clock-names = "core", "bus";
+		clock-names = "bus", "core";
 		assigned-clocks = <&cru ACLK_GPU>;
 		assigned-clock-rates = <100000000>;
 		resets = <&cru SRST_GPU>;
-- 
2.25.1

[PATCH 4.19 23/95] ARM: dts: rockchip: fix pinctrl sub nodename for spi in rk322x.dtsi

[Greg Kroah-Hartman]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 855bdca1781c79eb661f89c8944c4a719ce720e8 ]

A test with the command below gives these errors:

arch/arm/boot/dts/rk3229-evb.dt.yaml: spi-0:
'#address-cells' is a required property
arch/arm/boot/dts/rk3229-evb.dt.yaml: spi-1:
'#address-cells' is a required property
arch/arm/boot/dts/rk3229-xms6.dt.yaml: spi-0:
'#address-cells' is a required property
arch/arm/boot/dts/rk3229-xms6.dt.yaml: spi-1:
'#address-cells' is a required property

The $nodename pattern for spi nodes is
"^spi(@.*|-[0-9a-f])*$". To prevent warnings rename
'spi-0' and 'spi-1' pinctrl sub nodenames to
'spi0' and 'spi1' in 'rk322x.dtsi'.

make ARCH=arm dtbs_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/spi/spi-controller.yaml

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20200424123923.8192-1-jbx6244@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rk322x.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/rk322x.dtsi b/arch/arm/boot/dts/rk322x.dtsi
index bada942ef38d..2aa74267ae51 100644
--- a/arch/arm/boot/dts/rk322x.dtsi
+++ b/arch/arm/boot/dts/rk322x.dtsi
@@ -944,7 +944,7 @@
 			};
 		};
 
-		spi-0 {
+		spi0 {
 			spi0_clk: spi0-clk {
 				rockchip,pins = <0 9 RK_FUNC_2 &pcfg_pull_up>;
 			};
@@ -962,7 +962,7 @@
 			};
 		};
 
-		spi-1 {
+		spi1 {
 			spi1_clk: spi1-clk {
 				rockchip,pins = <0 23 RK_FUNC_2 &pcfg_pull_up>;
 			};
-- 
2.25.1

[PATCH 4.19 24/95] gpio: tegra: mask GPIO IRQs during IRQ shutdown

[Greg Kroah-Hartman]

From: Stephen Warren <swarren@nvidia.com>

[ Upstream commit 0cf253eed5d2bdf7bb3152457b38f39b012955f7 ]

The driver currently leaves GPIO IRQs unmasked even when the GPIO IRQ
client has released the GPIO IRQ. This allows the HW to raise IRQs, and
SW to process them, after shutdown. Fix this by masking the IRQ when it's
shut down. This is usually taken care of by the irqchip core, but since
this driver has a custom irq_shutdown implementation, it must do this
explicitly itself.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Link: https://lore.kernel.org/r/20200427232605.11608-1-swarren@wwwdotorg.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpio/gpio-tegra.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 47dbd19751d0..57903501821e 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -357,6 +357,7 @@ static void tegra_gpio_irq_shutdown(struct irq_data *d)
 	struct tegra_gpio_info *tgi = bank->tgi;
 	unsigned int gpio = d->hwirq;
 
+	tegra_gpio_irq_mask(d);
 	gpiochip_unlock_as_irq(&tgi->gc, gpio);
 }
 
-- 
2.25.1

[PATCH 4.19 25/95] ALSA: usb-audio: add mapping for ASRock TRX40 Creator

[Greg Kroah-Hartman]

From: Andrew Oakley <andrew@adoakley.name>

[ Upstream commit da7a8f1a8fc3e14c6dcc52b4098bddb8f20390be ]

This is another TRX40 based motherboard with ALC1220-VB USB-audio
that requires a static mapping table.

This motherboard also has a PCI device which advertises no codecs.  The
PCI ID is 1022:1487 and PCI SSID is 1022:d102.  As this is using the AMD
vendor ID, don't blacklist for now in case other boards have a working
audio device with the same ssid.

alsa-info.sh report for this board:
http://alsa-project.org/db/?f=0a742f89066527497b77ce16bca486daccf8a70c

Signed-off-by: Andrew Oakley <andrew@adoakley.name>
Link: https://lore.kernel.org/r/20200503141639.35519-1-andrew@adoakley.name
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_maps.c   | 5 +++++
 sound/usb/quirks-table.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index 1689e4f242df..d7a8b23b335b 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -543,6 +543,11 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
 		.map = trx40_mobo_map,
 		.connector_map = trx40_mobo_connector_map,
 	},
+	{	/* Asrock TRX40 Creator */
+		.id = USB_ID(0x26ce, 0x0a01),
+		.map = trx40_mobo_map,
+		.connector_map = trx40_mobo_connector_map,
+	},
 	{ 0 } /* terminator */
 };
 
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 774aeedde071..4f8a2b98e090 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -3412,6 +3412,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 ALC1220_VB_DESKTOP(0x0414, 0xa002), /* Gigabyte TRX40 Aorus Pro WiFi */
 ALC1220_VB_DESKTOP(0x0db0, 0x0d64), /* MSI TRX40 Creator */
 ALC1220_VB_DESKTOP(0x0db0, 0x543d), /* MSI TRX40 */
+ALC1220_VB_DESKTOP(0x26ce, 0x0a01), /* Asrock TRX40 Creator */
 #undef ALC1220_VB_DESKTOP
 
 #undef USB_DEVICE_VENDOR_SPEC
-- 
2.25.1

[PATCH 4.19 26/95] net: microchip: encx24j600: add missed kthread_stop

[Greg Kroah-Hartman]

From: Chuhong Yuan <hslester96@gmail.com>

[ Upstream commit ff8ce319e9c25e920d994cc35236f0bb32dfc8f3 ]

This driver calls kthread_run() in probe, but forgets to call
kthread_stop() in probe failure and remove.
Add the missed kthread_stop() to fix it.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/microchip/encx24j600.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/microchip/encx24j600.c b/drivers/net/ethernet/microchip/encx24j600.c
index f831238d9793..84b6ad76f5bc 100644
--- a/drivers/net/ethernet/microchip/encx24j600.c
+++ b/drivers/net/ethernet/microchip/encx24j600.c
@@ -1075,7 +1075,7 @@ static int encx24j600_spi_probe(struct spi_device *spi)
 	if (unlikely(ret)) {
 		netif_err(priv, probe, ndev, "Error %d initializing card encx24j600 card\n",
 			  ret);
-		goto out_free;
+		goto out_stop;
 	}
 
 	eidled = encx24j600_read_reg(priv, EIDLED);
@@ -1093,6 +1093,8 @@ static int encx24j600_spi_probe(struct spi_device *spi)
 
 out_unregister:
 	unregister_netdev(priv->ndev);
+out_stop:
+	kthread_stop(priv->kworker_task);
 out_free:
 	free_netdev(ndev);
 
@@ -1105,6 +1107,7 @@ static int encx24j600_spi_remove(struct spi_device *spi)
 	struct encx24j600_priv *priv = dev_get_drvdata(&spi->dev);
 
 	unregister_netdev(priv->ndev);
+	kthread_stop(priv->kworker_task);
 
 	free_netdev(priv->ndev);
 
-- 
2.25.1

[PATCH 4.19 27/95] gfs2: move privileged user check to gfs2_quota_lock_check

[Greg Kroah-Hartman]

From: Bob Peterson <rpeterso@redhat.com>

[ Upstream commit 4ed0c30811cb4d30ef89850b787a53a84d5d2bcb ]

Before this patch, function gfs2_quota_lock checked if it was called
from a privileged user, and if so, it bypassed the quota check:
superuser can operate outside the quotas.
That's the wrong place for the check because the lock/unlock functions
are separate from the lock_check function, and you can do lock and
unlock without actually checking the quotas.

This patch moves the check to gfs2_quota_lock_check.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/gfs2/quota.c | 3 +--
 fs/gfs2/quota.h | 3 ++-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 0efae7a0ee80..dd0f9bc13164 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -1043,8 +1043,7 @@ int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid)
 	u32 x;
 	int error = 0;
 
-	if (capable(CAP_SYS_RESOURCE) ||
-	    sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
+	if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
 		return 0;
 
 	error = gfs2_quota_hold(ip, uid, gid);
diff --git a/fs/gfs2/quota.h b/fs/gfs2/quota.h
index 836f29480be6..e3a6e2404d11 100644
--- a/fs/gfs2/quota.h
+++ b/fs/gfs2/quota.h
@@ -47,7 +47,8 @@ static inline int gfs2_quota_lock_check(struct gfs2_inode *ip,
 	int ret;
 
 	ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */
-	if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
+	if (capable(CAP_SYS_RESOURCE) ||
+	    sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
 		return 0;
 	ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
 	if (ret)
-- 
2.25.1

[PATCH 4.19 28/95] gfs2: dont call quota_unhold if quotas are not locked

[Greg Kroah-Hartman]

From: Bob Peterson <rpeterso@redhat.com>

[ Upstream commit c9cb9e381985bbbe8acd2695bbe6bd24bf06b81c ]

Before this patch, function gfs2_quota_unlock checked if quotas are
turned off, and if so, it branched to label out, which called
gfs2_quota_unhold. With the new system of gfs2_qa_get and put, we
no longer want to call gfs2_quota_unhold or we won't balance our
gets and puts.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/gfs2/quota.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index dd0f9bc13164..ce47c8233612 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -1116,7 +1116,7 @@ void gfs2_quota_unlock(struct gfs2_inode *ip)
 	int found;
 
 	if (!test_and_clear_bit(GIF_QD_LOCKED, &ip->i_flags))
-		goto out;
+		return;
 
 	for (x = 0; x < ip->i_qadata->qa_qd_num; x++) {
 		struct gfs2_quota_data *qd;
@@ -1153,7 +1153,6 @@ void gfs2_quota_unlock(struct gfs2_inode *ip)
 			qd_unlock(qda[x]);
 	}
 
-out:
 	gfs2_quota_unhold(ip);
 }
 
-- 
2.25.1

[PATCH 4.19 29/95] cachefiles: Fix race between read_waiter and read_copier involving op->to_do

[Greg Kroah-Hartman]

From: Lei Xue <carmark.dlut@gmail.com>

[ Upstream commit 7bb0c5338436dae953622470d52689265867f032 ]

There is a potential race in fscache operation enqueuing for reading and
copying multiple pages from cachefiles to netfs.  The problem can be seen
easily on a heavy loaded system (for example many processes reading files
continually on an NFS share covered by fscache triggered this problem within
a few minutes).

The race is due to cachefiles_read_waiter() adding the op to the monitor
to_do list and then then drop the object->work_lock spinlock before
completing fscache_enqueue_operation().  Once the lock is dropped,
cachefiles_read_copier() grabs the op, completes processing it, and
makes it through fscache_retrieval_complete() which sets the op->state to
the final state of FSCACHE_OP_ST_COMPLETE(4).  When cachefiles_read_waiter()
finally gets through the remainder of fscache_enqueue_operation()
it sees the invalid state, and hits the ASSERTCMP and the following
oops is seen:
[ 2259.612361] FS-Cache:
[ 2259.614785] FS-Cache: Assertion failed
[ 2259.618639] FS-Cache: 4 == 5 is false
[ 2259.622456] ------------[ cut here ]------------
[ 2259.627190] kernel BUG at fs/fscache/operation.c:70!
...
[ 2259.791675] RIP: 0010:[<ffffffffc061b4cf>]  [<ffffffffc061b4cf>] fscache_enqueue_operation+0xff/0x170 [fscache]
[ 2259.802059] RSP: 0000:ffffa0263d543be0  EFLAGS: 00010046
[ 2259.807521] RAX: 0000000000000019 RBX: ffffa01a4d390480 RCX: 0000000000000006
[ 2259.814847] RDX: 0000000000000000 RSI: 0000000000000046 RDI: ffffa0263d553890
[ 2259.822176] RBP: ffffa0263d543be8 R08: 0000000000000000 R09: ffffa0263c2d8708
[ 2259.829502] R10: 0000000000001e7f R11: 0000000000000000 R12: ffffa01a4d390480
[ 2259.844483] R13: ffff9fa9546c5920 R14: ffffa0263d543c80 R15: ffffa0293ff9bf10
[ 2259.859554] FS:  00007f4b6efbd700(0000) GS:ffffa0263d540000(0000) knlGS:0000000000000000
[ 2259.875571] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2259.889117] CR2: 00007f49e1624ff0 CR3: 0000012b38b38000 CR4: 00000000007607e0
[ 2259.904015] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2259.918764] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2259.933449] PKRU: 55555554
[ 2259.943654] Call Trace:
[ 2259.953592]  <IRQ>
[ 2259.955577]  [<ffffffffc03a7c12>] cachefiles_read_waiter+0x92/0xf0 [cachefiles]
[ 2259.978039]  [<ffffffffa34d3942>] __wake_up_common+0x82/0x120
[ 2259.991392]  [<ffffffffa34d3a63>] __wake_up_common_lock+0x83/0xc0
[ 2260.004930]  [<ffffffffa34d3510>] ? task_rq_unlock+0x20/0x20
[ 2260.017863]  [<ffffffffa34d3ab3>] __wake_up+0x13/0x20
[ 2260.030230]  [<ffffffffa34c72a0>] __wake_up_bit+0x50/0x70
[ 2260.042535]  [<ffffffffa35bdcdb>] unlock_page+0x2b/0x30
[ 2260.054495]  [<ffffffffa35bdd09>] page_endio+0x29/0x90
[ 2260.066184]  [<ffffffffa368fc81>] mpage_end_io+0x51/0x80

CPU1
cachefiles_read_waiter()
 20 static int cachefiles_read_waiter(wait_queue_entry_t *wait, unsigned mode,
 21                                   int sync, void *_key)
 22 {
...
 61         spin_lock(&object->work_lock);
 62         list_add_tail(&monitor->op_link, &op->to_do);
 63         spin_unlock(&object->work_lock);
<begin race window>
 64
 65         fscache_enqueue_retrieval(op);
182 static inline void fscache_enqueue_retrieval(struct fscache_retrieval *op)
183 {
184         fscache_enqueue_operation(&op->op);
185 }
 58 void fscache_enqueue_operation(struct fscache_operation *op)
 59 {
 60         struct fscache_cookie *cookie = op->object->cookie;
 61
 62         _enter("{OBJ%x OP%x,%u}",
 63                op->object->debug_id, op->debug_id, atomic_read(&op->usage));
 64
 65         ASSERT(list_empty(&op->pend_link));
 66         ASSERT(op->processor != NULL);
 67         ASSERT(fscache_object_is_available(op->object));
 68         ASSERTCMP(atomic_read(&op->usage), >, 0);
<end race window>

CPU2
cachefiles_read_copier()
168         while (!list_empty(&op->to_do)) {
...
202                 fscache_end_io(op, monitor->netfs_page, error);
203                 put_page(monitor->netfs_page);
204                 fscache_retrieval_complete(op, 1);

CPU1
 58 void fscache_enqueue_operation(struct fscache_operation *op)
 59 {
...
 69         ASSERTIFCMP(op->state != FSCACHE_OP_ST_IN_PROGRESS,
 70                     op->state, ==,  FSCACHE_OP_ST_CANCELLED);

Signed-off-by: Lei Xue <carmark.dlut@gmail.com>
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cachefiles/rdwr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
index 8a577409d030..f822ac9e3cb0 100644
--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c
@@ -64,9 +64,9 @@ static int cachefiles_read_waiter(wait_queue_entry_t *wait, unsigned mode,
 	object = container_of(op->op.object, struct cachefiles_object, fscache);
 	spin_lock(&object->work_lock);
 	list_add_tail(&monitor->op_link, &op->to_do);
+	fscache_enqueue_retrieval(op);
 	spin_unlock(&object->work_lock);
 
-	fscache_enqueue_retrieval(op);
 	fscache_put_retrieval(op);
 	return 0;
 }
-- 
2.25.1

[PATCH 4.19 30/95] usb: dwc3: pci: Enable extcon driver for Intel Merrifield

[Greg Kroah-Hartman]

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit 066c09593454e89bc605ffdff1c9810061f9b1e1 ]

Intel Merrifield provides a DR support via PMIC which has its own
extcon driver.

Add a property string to link to that driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/dwc3/dwc3-pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index edf7984707b7..b2fd505938a0 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -112,6 +112,7 @@ static const struct property_entry dwc3_pci_intel_properties[] = {
 
 static const struct property_entry dwc3_pci_mrfld_properties[] = {
 	PROPERTY_ENTRY_STRING("dr_mode", "otg"),
+	PROPERTY_ENTRY_STRING("linux,extcon-name", "mrfld_bcove_pwrsrc"),
 	PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
 	{}
 };
-- 
2.25.1

[PATCH 4.19 31/95] usb: gadget: legacy: fix redundant initialization warnings

[Greg Kroah-Hartman]

From: Masahiro Yamada <masahiroy@kernel.org>

[ Upstream commit d13cce757954fa663c69845611957396843ed87a ]

Fix the following cppcheck warnings:

drivers/usb/gadget/legacy/inode.c:1364:8: style: Redundant initialization for 'value'. The initialized value is overwritten$
 value = -EOPNOTSUPP;
       ^
drivers/usb/gadget/legacy/inode.c:1331:15: note: value is initialized
 int    value = -EOPNOTSUPP;
              ^
drivers/usb/gadget/legacy/inode.c:1364:8: note: value is overwritten
 value = -EOPNOTSUPP;
       ^
drivers/usb/gadget/legacy/inode.c:1817:8: style: Redundant initialization for 'value'. The initialized value is overwritten$
 value = -EINVAL;
       ^
drivers/usb/gadget/legacy/inode.c:1787:18: note: value is initialized
 ssize_t   value = len, length = len;
                 ^
drivers/usb/gadget/legacy/inode.c:1817:8: note: value is overwritten
 value = -EINVAL;
       ^
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/legacy/inode.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index 37ca0e669bd8..25d417ad9000 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -1360,7 +1360,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
 
 	req->buf = dev->rbuf;
 	req->context = NULL;
-	value = -EOPNOTSUPP;
 	switch (ctrl->bRequest) {
 
 	case USB_REQ_GET_DESCRIPTOR:
@@ -1783,7 +1782,7 @@ static ssize_t
 dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 {
 	struct dev_data		*dev = fd->private_data;
-	ssize_t			value = len, length = len;
+	ssize_t			value, length = len;
 	unsigned		total;
 	u32			tag;
 	char			*kbuf;
-- 
2.25.1

[PATCH 4.19 32/95] net: freescale: select CONFIG_FIXED_PHY where needed

[Greg Kroah-Hartman]

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit 99352c79af3e5f2e4724abf37fa5a2a3299b1c81 ]

I ran into a randconfig build failure with CONFIG_FIXED_PHY=m
and CONFIG_GIANFAR=y:

x86_64-linux-ld: drivers/net/ethernet/freescale/gianfar.o:(.rodata+0x418): undefined reference to `fixed_phy_change_carrier'

It seems the same thing can happen with dpaa and ucc_geth, so change
all three to do an explicit 'select FIXED_PHY'.

The fixed-phy driver actually has an alternative stub function that
theoretically allows building network drivers when fixed-phy is
disabled, but I don't see how that would help here, as the drivers
presumably would not work then.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/freescale/Kconfig      | 2 ++
 drivers/net/ethernet/freescale/dpaa/Kconfig | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/freescale/Kconfig b/drivers/net/ethernet/freescale/Kconfig
index a580a3dcbe59..e9f4326a0afa 100644
--- a/drivers/net/ethernet/freescale/Kconfig
+++ b/drivers/net/ethernet/freescale/Kconfig
@@ -76,6 +76,7 @@ config UCC_GETH
 	depends on QUICC_ENGINE
 	select FSL_PQ_MDIO
 	select PHYLIB
+	select FIXED_PHY
 	---help---
 	  This driver supports the Gigabit Ethernet mode of the QUICC Engine,
 	  which is available on some Freescale SOCs.
@@ -89,6 +90,7 @@ config GIANFAR
 	depends on HAS_DMA
 	select FSL_PQ_MDIO
 	select PHYLIB
+	select FIXED_PHY
 	select CRC32
 	---help---
 	  This driver supports the Gigabit TSEC on the MPC83xx, MPC85xx,
diff --git a/drivers/net/ethernet/freescale/dpaa/Kconfig b/drivers/net/ethernet/freescale/dpaa/Kconfig
index a654736237a9..8fec41e57178 100644
--- a/drivers/net/ethernet/freescale/dpaa/Kconfig
+++ b/drivers/net/ethernet/freescale/dpaa/Kconfig
@@ -2,6 +2,7 @@ menuconfig FSL_DPAA_ETH
 	tristate "DPAA Ethernet"
 	depends on FSL_DPAA && FSL_FMAN
 	select PHYLIB
+	select FIXED_PHY
 	select FSL_FMAN_MAC
 	---help---
 	  Data Path Acceleration Architecture Ethernet driver,
-- 
2.25.1

[PATCH 4.19 33/95] IB/i40iw: Remove bogus call to netdev_master_upper_dev_get()

[Greg Kroah-Hartman]

From: Denis V. Lunev <den@openvz.org>

[ Upstream commit 856ec7f64688387b100b7083cdf480ce3ac41227 ]

Local variable netdev is not used in these calls.

It should be noted, that this change is required to work in bonded mode.
Otherwise we would get the following assert:

 "RTNL: assertion failed at net/core/dev.c (5665)"

With the calltrace as follows:
	dump_stack+0x19/0x1b
	netdev_master_upper_dev_get+0x61/0x70
	i40iw_addr_resolve_neigh+0x1e8/0x220
	i40iw_make_cm_node+0x296/0x700
	? i40iw_find_listener.isra.10+0xcc/0x110
	i40iw_receive_ilq+0x3d4/0x810
	i40iw_puda_poll_completion+0x341/0x420
	i40iw_process_ceq+0xa5/0x280
	i40iw_ceq_dpc+0x1e/0x40
	tasklet_action+0x83/0x140
	__do_softirq+0x125/0x2bb
	call_softirq+0x1c/0x30
	do_softirq+0x65/0xa0
	irq_exit+0x105/0x110
	do_IRQ+0x56/0xf0
	common_interrupt+0x16a/0x16a
	? cpuidle_enter_state+0x57/0xd0
	cpuidle_idle_call+0xde/0x230
	arch_cpu_idle+0xe/0xc0
	cpu_startup_entry+0x14a/0x1e0
	start_secondary+0x1f7/0x270
	start_cpu+0x5/0x14

Link: https://lore.kernel.org/r/20200428131511.11049-1-den@openvz.org
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/i40iw/i40iw_cm.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index 771eb6bd0785..4321b9e3dbb4 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -1984,7 +1984,6 @@ static int i40iw_addr_resolve_neigh(struct i40iw_device *iwdev,
 	struct rtable *rt;
 	struct neighbour *neigh;
 	int rc = arpindex;
-	struct net_device *netdev = iwdev->netdev;
 	__be32 dst_ipaddr = htonl(dst_ip);
 	__be32 src_ipaddr = htonl(src_ip);
 
@@ -1994,9 +1993,6 @@ static int i40iw_addr_resolve_neigh(struct i40iw_device *iwdev,
 		return rc;
 	}
 
-	if (netif_is_bond_slave(netdev))
-		netdev = netdev_master_upper_dev_get(netdev);
-
 	neigh = dst_neigh_lookup(&rt->dst, &dst_ipaddr);
 
 	rcu_read_lock();
@@ -2062,7 +2058,6 @@ static int i40iw_addr_resolve_neigh_ipv6(struct i40iw_device *iwdev,
 {
 	struct neighbour *neigh;
 	int rc = arpindex;
-	struct net_device *netdev = iwdev->netdev;
 	struct dst_entry *dst;
 	struct sockaddr_in6 dst_addr;
 	struct sockaddr_in6 src_addr;
@@ -2083,9 +2078,6 @@ static int i40iw_addr_resolve_neigh_ipv6(struct i40iw_device *iwdev,
 		return rc;
 	}
 
-	if (netif_is_bond_slave(netdev))
-		netdev = netdev_master_upper_dev_get(netdev);
-
 	neigh = dst_neigh_lookup(dst, dst_addr.sin6_addr.in6_u.u6_addr32);
 
 	rcu_read_lock();
-- 
2.25.1

[PATCH 4.19 34/95] riscv: stacktrace: Fix undefined reference to `walk_stackframe

[Greg Kroah-Hartman]

From: Kefeng Wang <wangkefeng.wang@huawei.com>

[ Upstream commit 0502bee37cdef755d63eee60236562e5605e2480 ]

Drop static declaration to fix following build error if FRAME_POINTER disabled,
  riscv64-linux-ld: arch/riscv/kernel/perf_callchain.o: in function `.L0':
  perf_callchain.c:(.text+0x2b8): undefined reference to `walk_stackframe'

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/riscv/kernel/stacktrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c
index a4b1d94371a0..74b2168d7298 100644
--- a/arch/riscv/kernel/stacktrace.c
+++ b/arch/riscv/kernel/stacktrace.c
@@ -75,7 +75,7 @@ static void notrace walk_stackframe(struct task_struct *task,
 
 #else /* !CONFIG_FRAME_POINTER */
 
-static void notrace walk_stackframe(struct task_struct *task,
+void notrace walk_stackframe(struct task_struct *task,
 	struct pt_regs *regs, bool (*fn)(unsigned long, void *), void *arg)
 {
 	unsigned long sp, pc;
-- 
2.25.1

[PATCH 4.19 35/95] cifs: Fix null pointer check in cifs_read

[Greg Kroah-Hartman]

From: Steve French <stfrench@microsoft.com>

[ Upstream commit 9bd21d4b1a767c3abebec203342f3820dcb84662 ]

Coverity scan noted a redundant null check

Coverity-id: 728517
Reported-by: Coverity <scan-admin@coverity.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Shyam Prasad N <nspmangalore@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index cfb0d91289ec..128cbd69911b 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -3532,7 +3532,7 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
 			 * than it negotiated since it will refuse the read
 			 * then.
 			 */
-			if ((tcon->ses) && !(tcon->ses->capabilities &
+			if (!(tcon->ses->capabilities &
 				tcon->ses->server->vals->cap_large_files)) {
 				current_read_size = min_t(uint,
 					current_read_size, CIFSMaxBufSize);
-- 
2.25.1

[PATCH 4.19 36/95] samples: bpf: Fix build error

[Greg Kroah-Hartman]

From: Matteo Croce <mcroce@redhat.com>

[ Upstream commit 23ad04669f81f958e9a4121b0266228d2eb3c357 ]

GCC 10 is very strict about symbol clash, and lwt_len_hist_user contains
a symbol which clashes with libbpf:

/usr/bin/ld: samples/bpf/lwt_len_hist_user.o:(.bss+0x0): multiple definition of `bpf_log_buf'; samples/bpf/bpf_load.o:(.bss+0x8c0): first defined here
collect2: error: ld returned 1 exit status

bpf_log_buf here seems to be a leftover, so removing it.

Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200511113234.80722-1-mcroce@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 samples/bpf/lwt_len_hist_user.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/samples/bpf/lwt_len_hist_user.c b/samples/bpf/lwt_len_hist_user.c
index 587b68b1f8dd..430a4b7e353e 100644
--- a/samples/bpf/lwt_len_hist_user.c
+++ b/samples/bpf/lwt_len_hist_user.c
@@ -15,8 +15,6 @@
 #define MAX_INDEX 64
 #define MAX_STARS 38
 
-char bpf_log_buf[BPF_LOG_BUF_SIZE];
-
 static void stars(char *str, long val, long max, int width)
 {
 	int i;
-- 
2.25.1

[PATCH 4.19 37/95] Input: usbtouchscreen - add support for BonXeon TP

[Greg Kroah-Hartman]

From: James Hilliard <james.hilliard1@gmail.com>

[ Upstream commit e3b4f94ef52ae1592cbe199bd38dbdc0d58b2217 ]

Based on available information this uses the singletouch irtouch
protocol. This is tested and confirmed to be fully functional on
the BonXeon TP hardware I have.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Link: https://lore.kernel.org/r/20200413184217.55700-1-james.hilliard1@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/touchscreen/usbtouchscreen.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index 48304e26f988..d939c1798518 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -195,6 +195,7 @@ static const struct usb_device_id usbtouch_devices[] = {
 #endif
 
 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
+	{USB_DEVICE(0x255e, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 	{USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 	{USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 	{USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
-- 
2.25.1

[PATCH 4.19 38/95] Input: i8042 - add ThinkPad S230u to i8042 nomux list

[Greg Kroah-Hartman]

From: Kevin Locke <kevin@kevinlocke.name>

[ Upstream commit 18931506465a762ffd3f4803d36a18d336a67da9 ]

On the Lenovo ThinkPad Twist S230u (3347-4HU) with BIOS version
"GDETC1WW (1.81 ) 06/27/2019", whether booted in UEFI or Legacy/CSM mode
the keyboard, Synaptics TouchPad, and TrackPoint either do not function
or stop functioning a few minutes after boot.  This problem has been
noted before, perhaps only occurring on BIOS 1.57 and
later.[1][2][3][4][5]

This model does not have an external PS/2 port, so mux does not appear
to be useful.

Odds of a BIOS fix appear to be low: 1.57 was released over 6 years ago
and although the [BIOS changelog] notes "Fixed an issue of UEFI
touchpad/trackpoint/keyboard/touchscreen" in 1.58, it appears to be
insufficient.

Adding 33474HU to the nomux list avoids the issue on my system.

[1]: https://bugs.launchpad.net/bugs/1210748
[2]: https://bbs.archlinux.org/viewtopic.php?pid=1360425
[3]: https://forums.linuxmint.com/viewtopic.php?f=46&t=41200
[4]: https://forums.linuxmint.com/viewtopic.php?f=49&t=157115
[5]: https://forums.lenovo.com/topic/findpost/27/1337119
[BIOS changelog]: https://download.lenovo.com/pccbbs/mobiles/gduj33uc.txt

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/feb8a8339a67025dab3850e6377eb6f3a0e782ba.1587400635.git.kevin@kevinlocke.name
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/serio/i8042-x86ia64io.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index 0d0f977a2f39..8bf38eded1ef 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -545,6 +545,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
 		},
 	},
+	{
+		/* Lenovo ThinkPad Twist S230u */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "33474HU"),
+		},
+	},
 	{ }
 };
 
-- 
2.25.1

[PATCH 4.19 39/95] Input: evdev - call input_flush_device() on release(), not flush()

[Greg Kroah-Hartman]

From: Brendan Shanks <bshanks@codeweavers.com>

[ Upstream commit 09264098ff153f60866039d60b31d39b66f55a31 ]

input_flush_device() should only be called once the struct file is being
released and no open descriptors remain, but evdev_flush() was calling
it whenever a file descriptor was closed.

This caused uploaded force-feedback effects to be erased when a process
did a dup()/close() on the event FD, called system(), etc.

Call input_flush_device() from evdev_release() instead.

Reported-by: Mathieu Maret <mathieu.maret@gmail.com>
Signed-off-by: Brendan Shanks <bshanks@codeweavers.com>
Link: https://lore.kernel.org/r/20200421231003.7935-1-bshanks@codeweavers.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/evdev.c | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 4263e905cafb..3362dcb3ec0e 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -348,20 +348,6 @@ static int evdev_fasync(int fd, struct file *file, int on)
 	return fasync_helper(fd, file, on, &client->fasync);
 }
 
-static int evdev_flush(struct file *file, fl_owner_t id)
-{
-	struct evdev_client *client = file->private_data;
-	struct evdev *evdev = client->evdev;
-
-	mutex_lock(&evdev->mutex);
-
-	if (evdev->exist && !client->revoked)
-		input_flush_device(&evdev->handle, file);
-
-	mutex_unlock(&evdev->mutex);
-	return 0;
-}
-
 static void evdev_free(struct device *dev)
 {
 	struct evdev *evdev = container_of(dev, struct evdev, dev);
@@ -475,6 +461,10 @@ static int evdev_release(struct inode *inode, struct file *file)
 	unsigned int i;
 
 	mutex_lock(&evdev->mutex);
+
+	if (evdev->exist && !client->revoked)
+		input_flush_device(&evdev->handle, file);
+
 	evdev_ungrab(evdev, client);
 	mutex_unlock(&evdev->mutex);
 
@@ -1336,7 +1326,6 @@ static const struct file_operations evdev_fops = {
 	.compat_ioctl	= evdev_ioctl_compat,
 #endif
 	.fasync		= evdev_fasync,
-	.flush		= evdev_flush,
 	.llseek		= no_llseek,
 };
 
-- 
2.25.1

[PATCH 4.19 40/95] Input: xpad - add custom init packet for Xbox One S controllers

[Greg Kroah-Hartman]

From: Łukasz Patron <priv.luk@gmail.com>

[ Upstream commit 764f7f911bf72450c51eb74cbb262ad9933741d8 ]

Sending [ 0x05, 0x20, 0x00, 0x0f, 0x06 ] packet for Xbox One S controllers
fixes an issue where controller is stuck in Bluetooth mode and not sending
any inputs.

Signed-off-by: Łukasz Patron <priv.luk@gmail.com>
Reviewed-by: Cameron Gutman <aicommander@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200422075206.18229-1-priv.luk@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/joystick/xpad.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index aa4e431cbcd3..9adc72d65c63 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -472,6 +472,16 @@ static const u8 xboxone_fw2015_init[] = {
 	0x05, 0x20, 0x00, 0x01, 0x00
 };
 
+/*
+ * This packet is required for Xbox One S (0x045e:0x02ea)
+ * and Xbox One Elite Series 2 (0x045e:0x0b00) pads to
+ * initialize the controller that was previously used in
+ * Bluetooth mode.
+ */
+static const u8 xboxone_s_init[] = {
+	0x05, 0x20, 0x00, 0x0f, 0x06
+};
+
 /*
  * This packet is required for the Titanfall 2 Xbox One pads
  * (0x0e6f:0x0165) to finish initialization and for Hori pads
@@ -530,6 +540,8 @@ static const struct xboxone_init_packet xboxone_init_packets[] = {
 	XBOXONE_INIT_PKT(0x0e6f, 0x0165, xboxone_hori_init),
 	XBOXONE_INIT_PKT(0x0f0d, 0x0067, xboxone_hori_init),
 	XBOXONE_INIT_PKT(0x0000, 0x0000, xboxone_fw2015_init),
+	XBOXONE_INIT_PKT(0x045e, 0x02ea, xboxone_s_init),
+	XBOXONE_INIT_PKT(0x045e, 0x0b00, xboxone_s_init),
 	XBOXONE_INIT_PKT(0x0e6f, 0x0000, xboxone_pdp_init1),
 	XBOXONE_INIT_PKT(0x0e6f, 0x0000, xboxone_pdp_init2),
 	XBOXONE_INIT_PKT(0x24c6, 0x541a, xboxone_rumblebegin_init),
-- 
2.25.1

[PATCH 4.19 41/95] Input: dlink-dir685-touchkeys - fix a typo in driver name

[Greg Kroah-Hartman]

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit 38347374ae3f1ec4df56dd688bd603a64e79a0ed ]

According to the file name and Kconfig, a 'k' is missing in this driver
name. It should be "dlink-dir685-touchkeys".

Fixes: 131b3de7016b ("Input: add D-Link DIR-685 touchkeys driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200412213937.5287-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/keyboard/dlink-dir685-touchkeys.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/dlink-dir685-touchkeys.c b/drivers/input/keyboard/dlink-dir685-touchkeys.c
index 88e321b76397..6fe4062e3ac2 100644
--- a/drivers/input/keyboard/dlink-dir685-touchkeys.c
+++ b/drivers/input/keyboard/dlink-dir685-touchkeys.c
@@ -142,7 +142,7 @@ MODULE_DEVICE_TABLE(of, dir685_tk_of_match);
 
 static struct i2c_driver dir685_tk_i2c_driver = {
 	.driver = {
-		.name	= "dlin-dir685-touchkeys",
+		.name	= "dlink-dir685-touchkeys",
 		.of_match_table = of_match_ptr(dir685_tk_of_match),
 	},
 	.probe		= dir685_tk_probe,
-- 
2.25.1

[PATCH 4.19 42/95] Input: i8042 - add ThinkPad S230u to i8042 reset list

[Greg Kroah-Hartman]

From: Kevin Locke <kevin@kevinlocke.name>

[ Upstream commit 2712c91a54a1058d55c284152b4d93c979b67be6 ]

On the Lenovo ThinkPad Twist S230u (3347-4HU) with BIOS version
"GDETC1WW (1.81 ) 06/27/2019", the keyboard, Synaptics TouchPad, and
TrackPoint either do not function or stop functioning a few minutes
after boot.  This problem has been noted before, perhaps only occurring
with BIOS 1.57 and later.[1][2][3][4][5]

Odds of a BIOS fix appear to be low: 1.57 was released over 6 years ago
and although the [BIOS changelog] notes "Fixed an issue of UEFI
touchpad/trackpoint/keyboard/touchscreen" in 1.58, it appears to be
insufficient.

Setting i8042.reset=1 or adding 33474HU to the reset list avoids the
issue on my system from either warm or cold boot.

[1]: https://bugs.launchpad.net/bugs/1210748
[2]: https://bbs.archlinux.org/viewtopic.php?pid=1360425
[3]: https://forums.linuxmint.com/viewtopic.php?f=46&t=41200
[4]: https://forums.linuxmint.com/viewtopic.php?f=49&t=157115
[5]: https://forums.lenovo.com/topic/findpost/27/1337119
[BIOS changelog]: https://download.lenovo.com/pccbbs/mobiles/gduj33uc.txt

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/94f384b0f75f90f71425d7dce7ac82c59ddb87a8.1587702636.git.kevin@kevinlocke.name
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/serio/i8042-x86ia64io.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index 8bf38eded1ef..ad357f79c7d6 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -673,6 +673,13 @@ static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "P65xRP"),
 		},
 	},
+	{
+		/* Lenovo ThinkPad Twist S230u */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "33474HU"),
+		},
+	},
 	{ }
 };
 
-- 
2.25.1

[PATCH 4.19 43/95] Input: synaptics-rmi4 - really fix attn_data use-after-free

[Greg Kroah-Hartman]

From: Evan Green <evgreen@chromium.org>

[ Upstream commit d5a5e5b5fa7b86c05bf073acc0ba98fa280174ec ]

Fix a use-after-free noticed by running with KASAN enabled. If
rmi_irq_fn() is run twice in a row, then rmi_f11_attention() (among
others) will end up reading from drvdata->attn_data.data, which was
freed and left dangling in rmi_irq_fn().

Commit 55edde9fff1a ("Input: synaptics-rmi4 - prevent UAF reported by
KASAN") correctly identified and analyzed this bug. However the attempted
fix only NULLed out a local variable, missing the fact that
drvdata->attn_data is a struct, not a pointer.

NULL out the correct pointer in the driver data to prevent the attention
functions from copying from it.

Fixes: 55edde9fff1a ("Input: synaptics-rmi4 - prevent UAF reported by KASAN")
Fixes: b908d3cd812a ("Input: synaptics-rmi4 - allow to add attention data")
Signed-off-by: Evan Green <evgreen@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200427145537.1.Ic8f898e0147beeee2c005ee7b20f1aebdef1e7eb@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/rmi4/rmi_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 162526a0d463..24a1ff34964c 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -208,7 +208,7 @@ static irqreturn_t rmi_irq_fn(int irq, void *dev_id)
 
 	if (count) {
 		kfree(attn_data.data);
-		attn_data.data = NULL;
+		drvdata->attn_data.data = NULL;
 	}
 
 	if (!kfifo_is_empty(&drvdata->attn_fifo))
-- 
2.25.1

[PATCH 4.19 44/95] Input: synaptics-rmi4 - fix error return code in rmi_driver_probe()

[Greg Kroah-Hartman]

From: Wei Yongjun <weiyongjun1@huawei.com>

[ Upstream commit 5caab2da63207d6d631007f592f5219459e3454d ]

Fix to return a negative error code from the input_register_device()
error handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200428134948.78343-1-weiyongjun1@huawei.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/rmi4/rmi_driver.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 24a1ff34964c..ac6a20f7afdf 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -1213,7 +1213,8 @@ static int rmi_driver_probe(struct device *dev)
 	if (data->input) {
 		rmi_driver_set_input_name(rmi_dev, data->input);
 		if (!rmi_dev->xport->input) {
-			if (input_register_device(data->input)) {
+			retval = input_register_device(data->input);
+			if (retval) {
 				dev_err(dev, "%s: Failed to register input device.\n",
 					__func__);
 				goto err_destroy_functions;
-- 
2.25.1

[PATCH 4.19 45/95] ARM: 8970/1: decompressor: increase tag size

[Greg Kroah-Hartman]

From: Łukasz Stelmach <l.stelmach@samsung.com>

[ Upstream commit 2c962369d72f286659e6446919f88d69b943cb4d ]

The size field of the tag header structure is supposed to be set to the
size of a tag structure including the header.

Fixes: c772568788b5f0 ("ARM: add additional table to compressed kernel")
Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/compressed/vmlinux.lds.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/compressed/vmlinux.lds.S b/arch/arm/boot/compressed/vmlinux.lds.S
index 2b963d8e76dd..89a8f7588c78 100644
--- a/arch/arm/boot/compressed/vmlinux.lds.S
+++ b/arch/arm/boot/compressed/vmlinux.lds.S
@@ -46,7 +46,7 @@ SECTIONS
   }
   .table : ALIGN(4) {
     _table_start = .;
-    LONG(ZIMAGE_MAGIC(2))
+    LONG(ZIMAGE_MAGIC(4))
     LONG(ZIMAGE_MAGIC(0x5a534c4b))
     LONG(ZIMAGE_MAGIC(__piggy_size_addr - _start))
     LONG(ZIMAGE_MAGIC(_kernel_bss_size))
-- 
2.25.1

[PATCH 4.19 46/95] ARM: 8843/1: use unified assembler in headers

[Greg Kroah-Hartman]

From: Stefan Agner <stefan@agner.ch>

[ Upstream commit c001899a5d6c2d7a0f3b75b2307ddef137fb46a6 ]

Use unified assembler syntax (UAL) in headers. Divided syntax is
considered deprecated. This will also allow to build the kernel
using LLVM's integrated assembler.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/include/asm/assembler.h | 12 ++++++------
 arch/arm/include/asm/vfpmacros.h |  8 ++++----
 arch/arm/lib/bitops.h            |  8 ++++----
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 88286dd483ff..965224d14e6c 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -374,9 +374,9 @@ THUMB(	orr	\reg , \reg , #PSR_T_BIT	)
 	.macro	usraccoff, instr, reg, ptr, inc, off, cond, abort, t=TUSER()
 9999:
 	.if	\inc == 1
-	\instr\cond\()b\()\t\().w \reg, [\ptr, #\off]
+	\instr\()b\t\cond\().w \reg, [\ptr, #\off]
 	.elseif	\inc == 4
-	\instr\cond\()\t\().w \reg, [\ptr, #\off]
+	\instr\t\cond\().w \reg, [\ptr, #\off]
 	.else
 	.error	"Unsupported inc macro argument"
 	.endif
@@ -415,9 +415,9 @@ THUMB(	orr	\reg , \reg , #PSR_T_BIT	)
 	.rept	\rept
 9999:
 	.if	\inc == 1
-	\instr\cond\()b\()\t \reg, [\ptr], #\inc
+	\instr\()b\t\cond \reg, [\ptr], #\inc
 	.elseif	\inc == 4
-	\instr\cond\()\t \reg, [\ptr], #\inc
+	\instr\t\cond \reg, [\ptr], #\inc
 	.else
 	.error	"Unsupported inc macro argument"
 	.endif
@@ -458,7 +458,7 @@ THUMB(	orr	\reg , \reg , #PSR_T_BIT	)
 	.macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req
 #ifndef CONFIG_CPU_USE_DOMAINS
 	adds	\tmp, \addr, #\size - 1
-	sbcccs	\tmp, \tmp, \limit
+	sbcscc	\tmp, \tmp, \limit
 	bcs	\bad
 #ifdef CONFIG_CPU_SPECTRE
 	movcs	\addr, #0
@@ -472,7 +472,7 @@ THUMB(	orr	\reg , \reg , #PSR_T_BIT	)
 	sub	\tmp, \limit, #1
 	subs	\tmp, \tmp, \addr	@ tmp = limit - 1 - addr
 	addhs	\tmp, \tmp, #1		@ if (tmp >= 0) {
-	subhss	\tmp, \tmp, \size	@ tmp = limit - (addr + size) }
+	subshs	\tmp, \tmp, \size	@ tmp = limit - (addr + size) }
 	movlo	\addr, #0		@ if (tmp < 0) addr = NULL
 	csdb
 #endif
diff --git a/arch/arm/include/asm/vfpmacros.h b/arch/arm/include/asm/vfpmacros.h
index ef5dfedacd8d..628c336e8e3b 100644
--- a/arch/arm/include/asm/vfpmacros.h
+++ b/arch/arm/include/asm/vfpmacros.h
@@ -29,13 +29,13 @@
 	ldr	\tmp, =elf_hwcap		    @ may not have MVFR regs
 	ldr	\tmp, [\tmp, #0]
 	tst	\tmp, #HWCAP_VFPD32
-	ldcnel	p11, cr0, [\base],#32*4		    @ FLDMIAD \base!, {d16-d31}
+	ldclne	p11, cr0, [\base],#32*4		    @ FLDMIAD \base!, {d16-d31}
 	addeq	\base, \base, #32*4		    @ step over unused register space
 #else
 	VFPFMRX	\tmp, MVFR0			    @ Media and VFP Feature Register 0
 	and	\tmp, \tmp, #MVFR0_A_SIMD_MASK	    @ A_SIMD field
 	cmp	\tmp, #2			    @ 32 x 64bit registers?
-	ldceql	p11, cr0, [\base],#32*4		    @ FLDMIAD \base!, {d16-d31}
+	ldcleq	p11, cr0, [\base],#32*4		    @ FLDMIAD \base!, {d16-d31}
 	addne	\base, \base, #32*4		    @ step over unused register space
 #endif
 #endif
@@ -53,13 +53,13 @@
 	ldr	\tmp, =elf_hwcap		    @ may not have MVFR regs
 	ldr	\tmp, [\tmp, #0]
 	tst	\tmp, #HWCAP_VFPD32
-	stcnel	p11, cr0, [\base],#32*4		    @ FSTMIAD \base!, {d16-d31}
+	stclne	p11, cr0, [\base],#32*4		    @ FSTMIAD \base!, {d16-d31}
 	addeq	\base, \base, #32*4		    @ step over unused register space
 #else
 	VFPFMRX	\tmp, MVFR0			    @ Media and VFP Feature Register 0
 	and	\tmp, \tmp, #MVFR0_A_SIMD_MASK	    @ A_SIMD field
 	cmp	\tmp, #2			    @ 32 x 64bit registers?
-	stceql	p11, cr0, [\base],#32*4		    @ FSTMIAD \base!, {d16-d31}
+	stcleq	p11, cr0, [\base],#32*4		    @ FSTMIAD \base!, {d16-d31}
 	addne	\base, \base, #32*4		    @ step over unused register space
 #endif
 #endif
diff --git a/arch/arm/lib/bitops.h b/arch/arm/lib/bitops.h
index 93cddab73072..95bd35991288 100644
--- a/arch/arm/lib/bitops.h
+++ b/arch/arm/lib/bitops.h
@@ -7,7 +7,7 @@
 ENTRY(	\name		)
 UNWIND(	.fnstart	)
 	ands	ip, r1, #3
-	strneb	r1, [ip]		@ assert word-aligned
+	strbne	r1, [ip]		@ assert word-aligned
 	mov	r2, #1
 	and	r3, r0, #31		@ Get bit offset
 	mov	r0, r0, lsr #5
@@ -32,7 +32,7 @@ ENDPROC(\name		)
 ENTRY(	\name		)
 UNWIND(	.fnstart	)
 	ands	ip, r1, #3
-	strneb	r1, [ip]		@ assert word-aligned
+	strbne	r1, [ip]		@ assert word-aligned
 	mov	r2, #1
 	and	r3, r0, #31		@ Get bit offset
 	mov	r0, r0, lsr #5
@@ -62,7 +62,7 @@ ENDPROC(\name		)
 ENTRY(	\name		)
 UNWIND(	.fnstart	)
 	ands	ip, r1, #3
-	strneb	r1, [ip]		@ assert word-aligned
+	strbne	r1, [ip]		@ assert word-aligned
 	and	r2, r0, #31
 	mov	r0, r0, lsr #5
 	mov	r3, #1
@@ -89,7 +89,7 @@ ENDPROC(\name		)
 ENTRY(	\name		)
 UNWIND(	.fnstart	)
 	ands	ip, r1, #3
-	strneb	r1, [ip]		@ assert word-aligned
+	strbne	r1, [ip]		@ assert word-aligned
 	and	r3, r0, #31
 	mov	r0, r0, lsr #5
 	save_and_disable_irqs ip
-- 
2.25.1

[PATCH 4.19 47/95] ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h

[Greg Kroah-Hartman]

From: Russell King <rmk+kernel@armlinux.org.uk>

[ Upstream commit 747ffc2fcf969eff9309d7f2d1d61cb8b9e1bb40 ]

Consolidate the user access assembly code to asm/uaccess-asm.h.  This
moves the csdb, check_uaccess, uaccess_mask_range_ptr, uaccess_enable,
uaccess_disable, uaccess_save, uaccess_restore macros, and creates two
new ones for exception entry and exit - uaccess_entry and uaccess_exit.

This makes the uaccess_save and uaccess_restore macros private to
asm/uaccess-asm.h.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/include/asm/assembler.h   |  75 +-------------------
 arch/arm/include/asm/uaccess-asm.h | 106 +++++++++++++++++++++++++++++
 arch/arm/kernel/entry-armv.S       |  11 +--
 arch/arm/kernel/entry-header.S     |   9 +--
 4 files changed, 112 insertions(+), 89 deletions(-)
 create mode 100644 arch/arm/include/asm/uaccess-asm.h

diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 965224d14e6c..1935b580f0e8 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -21,11 +21,11 @@
 #endif
 
 #include <asm/ptrace.h>
-#include <asm/domain.h>
 #include <asm/opcodes-virt.h>
 #include <asm/asm-offsets.h>
 #include <asm/page.h>
 #include <asm/thread_info.h>
+#include <asm/uaccess-asm.h>
 
 #define IOMEM(x)	(x)
 
@@ -447,79 +447,6 @@ THUMB(	orr	\reg , \reg , #PSR_T_BIT	)
 	.size \name , . - \name
 	.endm
 
-	.macro	csdb
-#ifdef CONFIG_THUMB2_KERNEL
-	.inst.w	0xf3af8014
-#else
-	.inst	0xe320f014
-#endif
-	.endm
-
-	.macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req
-#ifndef CONFIG_CPU_USE_DOMAINS
-	adds	\tmp, \addr, #\size - 1
-	sbcscc	\tmp, \tmp, \limit
-	bcs	\bad
-#ifdef CONFIG_CPU_SPECTRE
-	movcs	\addr, #0
-	csdb
-#endif
-#endif
-	.endm
-
-	.macro uaccess_mask_range_ptr, addr:req, size:req, limit:req, tmp:req
-#ifdef CONFIG_CPU_SPECTRE
-	sub	\tmp, \limit, #1
-	subs	\tmp, \tmp, \addr	@ tmp = limit - 1 - addr
-	addhs	\tmp, \tmp, #1		@ if (tmp >= 0) {
-	subshs	\tmp, \tmp, \size	@ tmp = limit - (addr + size) }
-	movlo	\addr, #0		@ if (tmp < 0) addr = NULL
-	csdb
-#endif
-	.endm
-
-	.macro	uaccess_disable, tmp, isb=1
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
-	/*
-	 * Whenever we re-enter userspace, the domains should always be
-	 * set appropriately.
-	 */
-	mov	\tmp, #DACR_UACCESS_DISABLE
-	mcr	p15, 0, \tmp, c3, c0, 0		@ Set domain register
-	.if	\isb
-	instr_sync
-	.endif
-#endif
-	.endm
-
-	.macro	uaccess_enable, tmp, isb=1
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
-	/*
-	 * Whenever we re-enter userspace, the domains should always be
-	 * set appropriately.
-	 */
-	mov	\tmp, #DACR_UACCESS_ENABLE
-	mcr	p15, 0, \tmp, c3, c0, 0
-	.if	\isb
-	instr_sync
-	.endif
-#endif
-	.endm
-
-	.macro	uaccess_save, tmp
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
-	mrc	p15, 0, \tmp, c3, c0, 0
-	str	\tmp, [sp, #SVC_DACR]
-#endif
-	.endm
-
-	.macro	uaccess_restore
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
-	ldr	r0, [sp, #SVC_DACR]
-	mcr	p15, 0, r0, c3, c0, 0
-#endif
-	.endm
-
 	.irp	c,,eq,ne,cs,cc,mi,pl,vs,vc,hi,ls,ge,lt,gt,le,hs,lo
 	.macro	ret\c, reg
 #if __LINUX_ARM_ARCH__ < 6
diff --git a/arch/arm/include/asm/uaccess-asm.h b/arch/arm/include/asm/uaccess-asm.h
new file mode 100644
index 000000000000..d475e3e8145d
--- /dev/null
+++ b/arch/arm/include/asm/uaccess-asm.h
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __ASM_UACCESS_ASM_H__
+#define __ASM_UACCESS_ASM_H__
+
+#include <asm/asm-offsets.h>
+#include <asm/domain.h>
+#include <asm/memory.h>
+#include <asm/thread_info.h>
+
+	.macro	csdb
+#ifdef CONFIG_THUMB2_KERNEL
+	.inst.w	0xf3af8014
+#else
+	.inst	0xe320f014
+#endif
+	.endm
+
+	.macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req
+#ifndef CONFIG_CPU_USE_DOMAINS
+	adds	\tmp, \addr, #\size - 1
+	sbcscc	\tmp, \tmp, \limit
+	bcs	\bad
+#ifdef CONFIG_CPU_SPECTRE
+	movcs	\addr, #0
+	csdb
+#endif
+#endif
+	.endm
+
+	.macro uaccess_mask_range_ptr, addr:req, size:req, limit:req, tmp:req
+#ifdef CONFIG_CPU_SPECTRE
+	sub	\tmp, \limit, #1
+	subs	\tmp, \tmp, \addr	@ tmp = limit - 1 - addr
+	addhs	\tmp, \tmp, #1		@ if (tmp >= 0) {
+	subshs	\tmp, \tmp, \size	@ tmp = limit - (addr + size) }
+	movlo	\addr, #0		@ if (tmp < 0) addr = NULL
+	csdb
+#endif
+	.endm
+
+	.macro	uaccess_disable, tmp, isb=1
+#ifdef CONFIG_CPU_SW_DOMAIN_PAN
+	/*
+	 * Whenever we re-enter userspace, the domains should always be
+	 * set appropriately.
+	 */
+	mov	\tmp, #DACR_UACCESS_DISABLE
+	mcr	p15, 0, \tmp, c3, c0, 0		@ Set domain register
+	.if	\isb
+	instr_sync
+	.endif
+#endif
+	.endm
+
+	.macro	uaccess_enable, tmp, isb=1
+#ifdef CONFIG_CPU_SW_DOMAIN_PAN
+	/*
+	 * Whenever we re-enter userspace, the domains should always be
+	 * set appropriately.
+	 */
+	mov	\tmp, #DACR_UACCESS_ENABLE
+	mcr	p15, 0, \tmp, c3, c0, 0
+	.if	\isb
+	instr_sync
+	.endif
+#endif
+	.endm
+
+	.macro	uaccess_save, tmp
+#ifdef CONFIG_CPU_SW_DOMAIN_PAN
+	mrc	p15, 0, \tmp, c3, c0, 0
+	str	\tmp, [sp, #SVC_DACR]
+#endif
+	.endm
+
+	.macro	uaccess_restore
+#ifdef CONFIG_CPU_SW_DOMAIN_PAN
+	ldr	r0, [sp, #SVC_DACR]
+	mcr	p15, 0, r0, c3, c0, 0
+#endif
+	.endm
+
+	/*
+	 * Save the address limit on entry to a privileged exception and
+	 * if using PAN, save and disable usermode access.
+	 */
+	.macro	uaccess_entry, tsk, tmp0, tmp1, tmp2, disable
+	ldr	\tmp0, [\tsk, #TI_ADDR_LIMIT]
+	mov	\tmp1, #TASK_SIZE
+	str	\tmp1, [\tsk, #TI_ADDR_LIMIT]
+	str	\tmp0, [sp, #SVC_ADDR_LIMIT]
+	uaccess_save \tmp0
+	.if \disable
+	uaccess_disable \tmp0
+	.endif
+	.endm
+
+	/* Restore the user access state previously saved by uaccess_entry */
+	.macro	uaccess_exit, tsk, tmp0, tmp1
+	ldr	\tmp1, [sp, #SVC_ADDR_LIMIT]
+	uaccess_restore
+	str	\tmp1, [\tsk, #TI_ADDR_LIMIT]
+	.endm
+
+#endif /* __ASM_UACCESS_ASM_H__ */
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index e85a3af9ddeb..89e551eebff1 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -30,6 +30,7 @@
 #include <asm/unistd.h>
 #include <asm/tls.h>
 #include <asm/system_info.h>
+#include <asm/uaccess-asm.h>
 
 #include "entry-header.S"
 #include <asm/entry-macro-multi.S>
@@ -182,15 +183,7 @@ ENDPROC(__und_invalid)
 	stmia	r7, {r2 - r6}
 
 	get_thread_info tsk
-	ldr	r0, [tsk, #TI_ADDR_LIMIT]
-	mov	r1, #TASK_SIZE
-	str	r1, [tsk, #TI_ADDR_LIMIT]
-	str	r0, [sp, #SVC_ADDR_LIMIT]
-
-	uaccess_save r0
-	.if \uaccess
-	uaccess_disable r0
-	.endif
+	uaccess_entry tsk, r0, r1, r2, \uaccess
 
 	.if \trace
 #ifdef CONFIG_TRACE_IRQFLAGS
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 62db1c9746cb..7b595f2d4a28 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -6,6 +6,7 @@
 #include <asm/asm-offsets.h>
 #include <asm/errno.h>
 #include <asm/thread_info.h>
+#include <asm/uaccess-asm.h>
 #include <asm/v7m.h>
 
 @ Bad Abort numbers
@@ -217,9 +218,7 @@
 	blne	trace_hardirqs_off
 #endif
 	.endif
-	ldr	r1, [sp, #SVC_ADDR_LIMIT]
-	uaccess_restore
-	str	r1, [tsk, #TI_ADDR_LIMIT]
+	uaccess_exit tsk, r0, r1
 
 #ifndef CONFIG_THUMB2_KERNEL
 	@ ARM mode SVC restore
@@ -263,9 +262,7 @@
 	@ on the stack remains correct).
 	@
 	.macro  svc_exit_via_fiq
-	ldr	r1, [sp, #SVC_ADDR_LIMIT]
-	uaccess_restore
-	str	r1, [tsk, #TI_ADDR_LIMIT]
+	uaccess_exit tsk, r0, r1
 #ifndef CONFIG_THUMB2_KERNEL
 	@ ARM mode restore
 	mov	r0, sp
-- 
2.25.1

[PATCH 4.19 48/95] ARM: uaccess: integrate uaccess_save and uaccess_restore

[Greg Kroah-Hartman]

From: Russell King <rmk+kernel@armlinux.org.uk>

[ Upstream commit 8ede890b0bcebe8c760aacfe20e934d98c3dc6aa ]

Integrate uaccess_save / uaccess_restore macros into the new
uaccess_entry / uaccess_exit macros respectively.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/include/asm/uaccess-asm.h | 30 +++++++++++++-----------------
 1 file changed, 13 insertions(+), 17 deletions(-)

diff --git a/arch/arm/include/asm/uaccess-asm.h b/arch/arm/include/asm/uaccess-asm.h
index d475e3e8145d..e46468b91eaa 100644
--- a/arch/arm/include/asm/uaccess-asm.h
+++ b/arch/arm/include/asm/uaccess-asm.h
@@ -67,30 +67,23 @@
 #endif
 	.endm
 
-	.macro	uaccess_save, tmp
 #ifdef CONFIG_CPU_SW_DOMAIN_PAN
-	mrc	p15, 0, \tmp, c3, c0, 0
-	str	\tmp, [sp, #SVC_DACR]
-#endif
-	.endm
-
-	.macro	uaccess_restore
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
-	ldr	r0, [sp, #SVC_DACR]
-	mcr	p15, 0, r0, c3, c0, 0
+#define DACR(x...)	x
+#else
+#define DACR(x...)
 #endif
-	.endm
 
 	/*
 	 * Save the address limit on entry to a privileged exception and
 	 * if using PAN, save and disable usermode access.
 	 */
 	.macro	uaccess_entry, tsk, tmp0, tmp1, tmp2, disable
-	ldr	\tmp0, [\tsk, #TI_ADDR_LIMIT]
-	mov	\tmp1, #TASK_SIZE
-	str	\tmp1, [\tsk, #TI_ADDR_LIMIT]
-	str	\tmp0, [sp, #SVC_ADDR_LIMIT]
-	uaccess_save \tmp0
+	ldr	\tmp1, [\tsk, #TI_ADDR_LIMIT]
+	mov	\tmp2, #TASK_SIZE
+	str	\tmp2, [\tsk, #TI_ADDR_LIMIT]
+ DACR(	mrc	p15, 0, \tmp0, c3, c0, 0)
+ DACR(	str	\tmp0, [sp, #SVC_DACR])
+	str	\tmp1, [sp, #SVC_ADDR_LIMIT]
 	.if \disable
 	uaccess_disable \tmp0
 	.endif
@@ -99,8 +92,11 @@
 	/* Restore the user access state previously saved by uaccess_entry */
 	.macro	uaccess_exit, tsk, tmp0, tmp1
 	ldr	\tmp1, [sp, #SVC_ADDR_LIMIT]
-	uaccess_restore
+ DACR(	ldr	\tmp0, [sp, #SVC_DACR])
 	str	\tmp1, [\tsk, #TI_ADDR_LIMIT]
+ DACR(	mcr	p15, 0, \tmp0, c3, c0, 0)
 	.endm
 
+#undef DACR
+
 #endif /* __ASM_UACCESS_ASM_H__ */
-- 
2.25.1

[PATCH 4.19 49/95] ARM: uaccess: fix DACR mismatch with nested exceptions

[Greg Kroah-Hartman]

From: Russell King <rmk+kernel@armlinux.org.uk>

[ Upstream commit 71f8af1110101facfad68989ff91f88f8e2c3e22 ]

Tomas Paukrt reports that his SAM9X60 based system (ARM926, ARMv5TJ)
fails to fix up alignment faults, eventually resulting in a kernel
oops.

The problem occurs when using CONFIG_CPU_USE_DOMAINS with commit
e6978e4bf181 ("ARM: save and reset the address limit when entering an
exception").  This is because the address limit is set back to
TASK_SIZE on exception entry, and, although it is restored on exception
exit, the domain register is not.

Hence, this sequence can occur:

  interrupt
    pt_regs->addr_limit = addr_limit		// USER_DS
    addr_limit = USER_DS
    alignment exception
    __probe_kernel_read()
      old_fs = get_fs()				// USER_DS
      set_fs(KERNEL_DS)
        addr_limit = KERNEL_DS
        dacr.kernel = DOMAIN_MANAGER
        interrupt
          pt_regs->addr_limit = addr_limit	// KERNEL_DS
          addr_limit = USER_DS
          alignment exception
          __probe_kernel_read()
            old_fs = get_fs()			// USER_DS
            set_fs(KERNEL_DS)
              addr_limit = KERNEL_DS
              dacr.kernel = DOMAIN_MANAGER
            ...
            set_fs(old_fs)
              addr_limit = USER_DS
              dacr.kernel = DOMAIN_CLIENT
          ...
          addr_limit = pt_regs->addr_limit	// KERNEL_DS
        interrupt returns

At this point, addr_limit is correctly restored to KERNEL_DS for
__probe_kernel_read() to continue execution, but dacr.kernel is not,
it has been reset by the set_fs(old_fs) to DOMAIN_CLIENT.

This would not have happened prior to the mentioned commit, because
addr_limit would remain KERNEL_DS, so get_fs() would have returned
KERNEL_DS, and so would correctly nest.

This commit fixes the problem by also saving the DACR on exception
entry if either CONFIG_CPU_SW_DOMAIN_PAN or CONFIG_CPU_USE_DOMAINS are
enabled, and resetting the DACR appropriately on exception entry to
match addr_limit and PAN settings.

Fixes: e6978e4bf181 ("ARM: save and reset the address limit when entering an exception")
Reported-by: Tomas Paukrt <tomas.paukrt@advantech.cz>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/include/asm/uaccess-asm.h | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/arch/arm/include/asm/uaccess-asm.h b/arch/arm/include/asm/uaccess-asm.h
index e46468b91eaa..907571fd05c6 100644
--- a/arch/arm/include/asm/uaccess-asm.h
+++ b/arch/arm/include/asm/uaccess-asm.h
@@ -67,15 +67,21 @@
 #endif
 	.endm
 
-#ifdef CONFIG_CPU_SW_DOMAIN_PAN
+#if defined(CONFIG_CPU_SW_DOMAIN_PAN) || defined(CONFIG_CPU_USE_DOMAINS)
 #define DACR(x...)	x
 #else
 #define DACR(x...)
 #endif
 
 	/*
-	 * Save the address limit on entry to a privileged exception and
-	 * if using PAN, save and disable usermode access.
+	 * Save the address limit on entry to a privileged exception.
+	 *
+	 * If we are using the DACR for kernel access by the user accessors
+	 * (CONFIG_CPU_USE_DOMAINS=y), always reset the DACR kernel domain
+	 * back to client mode, whether or not \disable is set.
+	 *
+	 * If we are using SW PAN, set the DACR user domain to no access
+	 * if \disable is set.
 	 */
 	.macro	uaccess_entry, tsk, tmp0, tmp1, tmp2, disable
 	ldr	\tmp1, [\tsk, #TI_ADDR_LIMIT]
@@ -84,8 +90,17 @@
  DACR(	mrc	p15, 0, \tmp0, c3, c0, 0)
  DACR(	str	\tmp0, [sp, #SVC_DACR])
 	str	\tmp1, [sp, #SVC_ADDR_LIMIT]
-	.if \disable
-	uaccess_disable \tmp0
+	.if \disable && IS_ENABLED(CONFIG_CPU_SW_DOMAIN_PAN)
+	/* kernel=client, user=no access */
+	mov	\tmp2, #DACR_UACCESS_DISABLE
+	mcr	p15, 0, \tmp2, c3, c0, 0
+	instr_sync
+	.elseif IS_ENABLED(CONFIG_CPU_USE_DOMAINS)
+	/* kernel=client */
+	bic	\tmp2, \tmp0, #domain_mask(DOMAIN_KERNEL)
+	orr	\tmp2, \tmp2, #domain_val(DOMAIN_KERNEL, DOMAIN_CLIENT)
+	mcr	p15, 0, \tmp2, c3, c0, 0
+	instr_sync
 	.endif
 	.endm
 
-- 
2.25.1

[PATCH 4.19 50/95] gpio: exar: Fix bad handling for ida_simple_get error path

[Greg Kroah-Hartman]

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 333830aa149a87cabeb5d30fbcf12eecc8040d2c ]

The commit 7ecced0934e5 ("gpio: exar: add a check for the return value
of ida_simple_get fails") added a goto jump to the common error
handler for ida_simple_get() error, but this is wrong in two ways:
it doesn't set the proper return code and, more badly, it invokes
ida_simple_remove() with a negative index that shall lead to a kernel
panic via BUG_ON().

This patch addresses those two issues.

Fixes: 7ecced0934e5 ("gpio: exar: add a check for the return value of ida_simple_get fails")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpio/gpio-exar.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-exar.c b/drivers/gpio/gpio-exar.c
index a09d2f9ebacc..695c19901eff 100644
--- a/drivers/gpio/gpio-exar.c
+++ b/drivers/gpio/gpio-exar.c
@@ -148,8 +148,10 @@ static int gpio_exar_probe(struct platform_device *pdev)
 	mutex_init(&exar_gpio->lock);
 
 	index = ida_simple_get(&ida_index, 0, 0, GFP_KERNEL);
-	if (index < 0)
-		goto err_destroy;
+	if (index < 0) {
+		ret = index;
+		goto err_mutex_destroy;
+	}
 
 	sprintf(exar_gpio->name, "exar_gpio%d", index);
 	exar_gpio->gpio_chip.label = exar_gpio->name;
@@ -176,6 +178,7 @@ static int gpio_exar_probe(struct platform_device *pdev)
 
 err_destroy:
 	ida_simple_remove(&ida_index, index);
+err_mutex_destroy:
 	mutex_destroy(&exar_gpio->lock);
 	return ret;
 }
-- 
2.25.1

[PATCH 4.19 51/95] IB/qib: Call kobject_put() when kobject_init_and_add() fails

[Greg Kroah-Hartman]

From: Kaike Wan <kaike.wan@intel.com>

[ Upstream commit a35cd6447effd5c239b564c80fa109d05ff3d114 ]

When kobject_init_and_add() returns an error in the function
qib_create_port_files(), the function kobject_put() is not called for the
corresponding kobject, which potentially leads to memory leak.

This patch fixes the issue by calling kobject_put() even if
kobject_init_and_add() fails. In addition, the ppd->diagc_kobj is released
along with other kobjects when the sysfs is unregistered.

Fixes: f931551bafe1 ("IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters")
Link: https://lore.kernel.org/r/20200512031328.189865.48627.stgit@awfm-01.aw.intel.com
Cc: <stable@vger.kernel.org>
Suggested-by: Lin Yi <teroincn@gmail.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/qib/qib_sysfs.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
index d831f3e61ae8..2626205780ee 100644
--- a/drivers/infiniband/hw/qib/qib_sysfs.c
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -756,7 +756,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
 		qib_dev_err(dd,
 			"Skipping linkcontrol sysfs info, (err %d) port %u\n",
 			ret, port_num);
-		goto bail;
+		goto bail_link;
 	}
 	kobject_uevent(&ppd->pport_kobj, KOBJ_ADD);
 
@@ -766,7 +766,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
 		qib_dev_err(dd,
 			"Skipping sl2vl sysfs info, (err %d) port %u\n",
 			ret, port_num);
-		goto bail_link;
+		goto bail_sl;
 	}
 	kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD);
 
@@ -776,7 +776,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
 		qib_dev_err(dd,
 			"Skipping diag_counters sysfs info, (err %d) port %u\n",
 			ret, port_num);
-		goto bail_sl;
+		goto bail_diagc;
 	}
 	kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD);
 
@@ -789,7 +789,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
 		qib_dev_err(dd,
 		 "Skipping Congestion Control sysfs info, (err %d) port %u\n",
 		 ret, port_num);
-		goto bail_diagc;
+		goto bail_cc;
 	}
 
 	kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
@@ -871,6 +871,7 @@ void qib_verbs_unregister_sysfs(struct qib_devdata *dd)
 				&cc_table_bin_attr);
 			kobject_put(&ppd->pport_cc_kobj);
 		}
+		kobject_put(&ppd->diagc_kobj);
 		kobject_put(&ppd->sl2vl_kobj);
 		kobject_put(&ppd->pport_kobj);
 	}
-- 
2.25.1

[PATCH 4.19 52/95] ARM: dts/imx6q-bx50v3: Set display interface clock parents

[Greg Kroah-Hartman]

From: Robert Beckett <bob.beckett@collabora.com>

[ Upstream commit 665e7c73a7724a393b4ec92d1ae1e029925ef2b7 ]

Avoid LDB and IPU DI clocks both using the same parent. LDB requires
pasthrough clock to avoid breaking timing while IPU DI does not.

Force IPU DI clocks to use IMX6QDL_CLK_PLL2_PFD0_352M as parent
and LDB to use IMX6QDL_CLK_PLL5_VIDEO_DIV.

This fixes an issue where attempting atomic modeset while using
HDMI and display port at the same time causes LDB clock programming
to destroy the programming of HDMI that was done during the same
modeset.

Cc: stable@vger.kernel.org
Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
[Use IMX6QDL_CLK_PLL2_PFD0_352M instead of IMX6QDL_CLK_PLL2_PFD2_396M
 originally chosen by Robert Beckett to avoid affecting eMMC clock
 by DRM atomic updates]
Signed-off-by: Ian Ray <ian.ray@ge.com>
[Squash Robert's and Ian's commits for bisectability, update patch
 description and add stable tag]
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/imx6q-b450v3.dts  |  7 -------
 arch/arm/boot/dts/imx6q-b650v3.dts  |  7 -------
 arch/arm/boot/dts/imx6q-b850v3.dts  | 11 -----------
 arch/arm/boot/dts/imx6q-bx50v3.dtsi | 15 +++++++++++++++
 4 files changed, 15 insertions(+), 25 deletions(-)

diff --git a/arch/arm/boot/dts/imx6q-b450v3.dts b/arch/arm/boot/dts/imx6q-b450v3.dts
index 3ec58500e9c2..25bf45659737 100644
--- a/arch/arm/boot/dts/imx6q-b450v3.dts
+++ b/arch/arm/boot/dts/imx6q-b450v3.dts
@@ -65,13 +65,6 @@
 	};
 };
 
-&clks {
-	assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,
-			  <&clks IMX6QDL_CLK_LDB_DI1_SEL>;
-	assigned-clock-parents = <&clks IMX6QDL_CLK_PLL3_USB_OTG>,
-				 <&clks IMX6QDL_CLK_PLL3_USB_OTG>;
-};
-
 &ldb {
 	status = "okay";
 
diff --git a/arch/arm/boot/dts/imx6q-b650v3.dts b/arch/arm/boot/dts/imx6q-b650v3.dts
index 5650a9b11091..0326711a8700 100644
--- a/arch/arm/boot/dts/imx6q-b650v3.dts
+++ b/arch/arm/boot/dts/imx6q-b650v3.dts
@@ -65,13 +65,6 @@
 	};
 };
 
-&clks {
-	assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,
-			  <&clks IMX6QDL_CLK_LDB_DI1_SEL>;
-	assigned-clock-parents = <&clks IMX6QDL_CLK_PLL3_USB_OTG>,
-				 <&clks IMX6QDL_CLK_PLL3_USB_OTG>;
-};
-
 &ldb {
 	status = "okay";
 
diff --git a/arch/arm/boot/dts/imx6q-b850v3.dts b/arch/arm/boot/dts/imx6q-b850v3.dts
index 044a5bebe1c5..612f782ddaaa 100644
--- a/arch/arm/boot/dts/imx6q-b850v3.dts
+++ b/arch/arm/boot/dts/imx6q-b850v3.dts
@@ -53,17 +53,6 @@
 	};
 };
 
-&clks {
-	assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,
-			  <&clks IMX6QDL_CLK_LDB_DI1_SEL>,
-			  <&clks IMX6QDL_CLK_IPU1_DI0_PRE_SEL>,
-			  <&clks IMX6QDL_CLK_IPU2_DI0_PRE_SEL>;
-	assigned-clock-parents = <&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>,
-				 <&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>,
-				 <&clks IMX6QDL_CLK_PLL2_PFD2_396M>,
-				 <&clks IMX6QDL_CLK_PLL2_PFD2_396M>;
-};
-
 &ldb {
 	fsl,dual-channel;
 	status = "okay";
diff --git a/arch/arm/boot/dts/imx6q-bx50v3.dtsi b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
index d3cba09be0cb..c1f554348187 100644
--- a/arch/arm/boot/dts/imx6q-bx50v3.dtsi
+++ b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
@@ -391,3 +391,18 @@
 		#interrupt-cells = <1>;
 	};
 };
+
+&clks {
+	assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,
+			  <&clks IMX6QDL_CLK_LDB_DI1_SEL>,
+			  <&clks IMX6QDL_CLK_IPU1_DI0_PRE_SEL>,
+			  <&clks IMX6QDL_CLK_IPU1_DI1_PRE_SEL>,
+			  <&clks IMX6QDL_CLK_IPU2_DI0_PRE_SEL>,
+			  <&clks IMX6QDL_CLK_IPU2_DI1_PRE_SEL>;
+	assigned-clock-parents = <&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>,
+				 <&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>,
+				 <&clks IMX6QDL_CLK_PLL2_PFD0_352M>,
+				 <&clks IMX6QDL_CLK_PLL2_PFD0_352M>,
+				 <&clks IMX6QDL_CLK_PLL2_PFD0_352M>,
+				 <&clks IMX6QDL_CLK_PLL2_PFD0_352M>;
+};
-- 
2.25.1

[PATCH 4.19 53/95] ARM: dts: bcm2835-rpi-zero-w: Fix led polarity

[Greg Kroah-Hartman]

From: Vincent Stehlé <vincent.stehle@laposte.net>

[ Upstream commit 58bb90ab415562eededb932455046924e65df342 ]

The status "ACT" led on the Raspberry Pi Zero W is on when GPIO 47 is low.

This has been verified on a board and somewhat confirmed by both the GPIO
name ("STATUS_LED_N") and the reduced schematics [1].

[1]: https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/rpi_SCH_ZeroW_1p1_reduced.pdf

Fixes: 2c7c040c73e9 ("ARM: dts: bcm2835: Add Raspberry Pi Zero W")
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
index 5fcadb9cf992..9f7145b1cc5e 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
@@ -25,7 +25,7 @@
 
 	leds {
 		act {
-			gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
+			gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
 		};
 	};
 
-- 
2.25.1

[PATCH 4.19 54/95] ARM: dts: bcm: HR2: Fix PPI interrupt types

[Greg Kroah-Hartman]

From: Hamish Martin <hamish.martin@alliedtelesis.co.nz>

[ Upstream commit be0ec060b54f0481fb95d59086c1484a949c903c ]

These error messages are output when booting on a BCM HR2 system:
    GIC: PPI11 is secure or misconfigured
    GIC: PPI13 is secure or misconfigured

Per ARM documentation these interrupts are triggered on a rising edge.
See ARM Cortex A-9 MPCore Technical Reference Manual, Revision r4p1,
Section 3.3.8 Interrupt Configuration Registers.

The same issue was resolved for NSP systems in commit 5f1aa51c7a1e
("ARM: dts: NSP: Fix PPI interrupt types").

Fixes: b9099ec754b5 ("ARM: dts: Add Broadcom Hurricane 2 DTS include file")
Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/bcm-hr2.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/bcm-hr2.dtsi b/arch/arm/boot/dts/bcm-hr2.dtsi
index e4d49731287f..e35398cc60a0 100644
--- a/arch/arm/boot/dts/bcm-hr2.dtsi
+++ b/arch/arm/boot/dts/bcm-hr2.dtsi
@@ -75,7 +75,7 @@
 		timer@20200 {
 			compatible = "arm,cortex-a9-global-timer";
 			reg = <0x20200 0x100>;
-			interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_PPI 11 IRQ_TYPE_EDGE_RISING>;
 			clocks = <&periph_clk>;
 		};
 
@@ -83,7 +83,7 @@
 			compatible = "arm,cortex-a9-twd-timer";
 			reg = <0x20600 0x20>;
 			interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) |
-						  IRQ_TYPE_LEVEL_HIGH)>;
+						  IRQ_TYPE_EDGE_RISING)>;
 			clocks = <&periph_clk>;
 		};
 
@@ -91,7 +91,7 @@
 			compatible = "arm,cortex-a9-twd-wdt";
 			reg = <0x20620 0x20>;
 			interrupts = <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(1) |
-						  IRQ_TYPE_LEVEL_HIGH)>;
+						  IRQ_TYPE_EDGE_RISING)>;
 			clocks = <&periph_clk>;
 		};
 
-- 
2.25.1

[PATCH 4.19 55/95] mmc: block: Fix use-after-free issue for rpmb

[Greg Kroah-Hartman]

From: Peng Hao <richard.peng@oppo.com>

[ Upstream commit 202500d21654874aa03243e91f96de153ec61860 ]

The data structure member “rpmb->md” was passed to a call of the function
“mmc_blk_put” after a call of the function “put_device”. Reorder these
function calls to keep the data accesses consistent.

Fixes: 1c87f7357849 ("mmc: block: Fix bug when removing RPMB chardev ")
Signed-off-by: Peng Hao <richard.peng@oppo.com>
Cc: stable@vger.kernel.org
[Uffe: Fixed up mangled patch and updated commit message]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/core/block.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 23bcdbba0cab..c723a1e54b18 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -2485,8 +2485,8 @@ static int mmc_rpmb_chrdev_release(struct inode *inode, struct file *filp)
 	struct mmc_rpmb_data *rpmb = container_of(inode->i_cdev,
 						  struct mmc_rpmb_data, chrdev);
 
-	put_device(&rpmb->dev);
 	mmc_blk_put(rpmb->md);
+	put_device(&rpmb->dev);
 
 	return 0;
 }
-- 
2.25.1

[PATCH 4.19 56/95] RDMA/pvrdma: Fix missing pci disable in pvrdma_pci_probe()

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000273@umn.edu>

[ Upstream commit db857e6ae548f0f4f4a0f63fffeeedf3cca21f9d ]

In function pvrdma_pci_probe(), pdev was not disabled in one error
path. Thus replace the jump target “err_free_device” by
"err_disable_pdev".

Fixes: 29c8d9eba550 ("IB: Add vmw_pvrdma driver")
Link: https://lore.kernel.org/r/20200523030457.16160-1-wu000273@umn.edu
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
index ed99f0a08dc4..0a414c5329ce 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
@@ -833,7 +833,7 @@ static int pvrdma_pci_probe(struct pci_dev *pdev,
 	    !(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
 		dev_err(&pdev->dev, "PCI BAR region not MMIO\n");
 		ret = -ENOMEM;
-		goto err_free_device;
+		goto err_disable_pdev;
 	}
 
 	ret = pci_request_regions(pdev, DRV_NAME);
-- 
2.25.1

[PATCH 4.19 57/95] ALSA: hwdep: fix a left shifting 1 by 31 UB bug

[Greg Kroah-Hartman]

From: Changming Liu <liu.changm@northeastern.edu>

[ Upstream commit fb8cd6481ffd126f35e9e146a0dcf0c4e8899f2e ]

The "info.index" variable can be 31 in "1 << info.index".
This might trigger an undefined behavior since 1 is signed.

Fix this by casting 1 to 1u just to be sure "1u << 31" is defined.

Signed-off-by: Changming Liu <liu.changm@northeastern.edu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/BL0PR06MB4548170B842CB055C9AF695DE5B00@BL0PR06MB4548.namprd06.prod.outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/core/hwdep.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c
index 26e71cf05f1e..600ab2eb1b50 100644
--- a/sound/core/hwdep.c
+++ b/sound/core/hwdep.c
@@ -231,12 +231,12 @@ static int snd_hwdep_dsp_load(struct snd_hwdep *hw,
 	if (info.index >= 32)
 		return -EINVAL;
 	/* check whether the dsp was already loaded */
-	if (hw->dsp_loaded & (1 << info.index))
+	if (hw->dsp_loaded & (1u << info.index))
 		return -EBUSY;
 	err = hw->ops.dsp_load(hw, &info);
 	if (err < 0)
 		return err;
-	hw->dsp_loaded |= (1 << info.index);
+	hw->dsp_loaded |= (1u << info.index);
 	return 0;
 }
 
-- 
2.25.1

[PATCH 4.19 58/95] ALSA: hda/realtek - Add a model for Thinkpad T570 without DAC workaround

[Greg Kroah-Hartman]

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 399c01aa49e548c82d40f8161915a5941dd3c60e ]

We fixed the regression of the speaker volume for some Thinkpad models
(e.g. T570) by the commit 54947cd64c1b ("ALSA: hda/realtek - Fix
speaker output regression on Thinkpad T570").  Essentially it fixes
the DAC / pin pairing by a static table.  It was confirmed and merged
to stable kernel later.

Now, interestingly, we got another regression report for the very same
model (T570) about the similar problem, and the commit above was the
culprit.  That is, by some reason, there are devices that prefer the
DAC1, and another device DAC2!

Unfortunately those have the same ID and we have no idea what can
differentiate, in this patch, a new fixup model "tpt470-dock-fix" is
provided, so that users with such a machine can apply it manually.
When model=tpt470-dock-fix option is passed to snd-hda-intel module,
it avoids the fixed DAC pairing and the DAC1 is assigned to the
speaker like the earlier versions.

Fixes: 54947cd64c1b ("ALSA: hda/realtek - Fix speaker output regression on Thinkpad T570")
BugLink: https://apibugzilla.suse.com/show_bug.cgi?id=1172017
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200526062406.9799-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pci/hda/patch_realtek.c | 36 +++++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 10 deletions(-)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 09a37d4c81ec..34cda0accbd8 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5152,18 +5152,9 @@ static void alc_fixup_tpt470_dock(struct hda_codec *codec,
 		{ 0x19, 0x21a11010 }, /* dock mic */
 		{ }
 	};
-	/* Assure the speaker pin to be coupled with DAC NID 0x03; otherwise
-	 * the speaker output becomes too low by some reason on Thinkpads with
-	 * ALC298 codec
-	 */
-	static hda_nid_t preferred_pairs[] = {
-		0x14, 0x03, 0x17, 0x02, 0x21, 0x02,
-		0
-	};
 	struct alc_spec *spec = codec->spec;
 
 	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
-		spec->gen.preferred_dacs = preferred_pairs;
 		spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP;
 		snd_hda_apply_pincfgs(codec, pincfgs);
 	} else if (action == HDA_FIXUP_ACT_INIT) {
@@ -5176,6 +5167,23 @@ static void alc_fixup_tpt470_dock(struct hda_codec *codec,
 	}
 }
 
+static void alc_fixup_tpt470_dacs(struct hda_codec *codec,
+				  const struct hda_fixup *fix, int action)
+{
+	/* Assure the speaker pin to be coupled with DAC NID 0x03; otherwise
+	 * the speaker output becomes too low by some reason on Thinkpads with
+	 * ALC298 codec
+	 */
+	static hda_nid_t preferred_pairs[] = {
+		0x14, 0x03, 0x17, 0x02, 0x21, 0x02,
+		0
+	};
+	struct alc_spec *spec = codec->spec;
+
+	if (action == HDA_FIXUP_ACT_PRE_PROBE)
+		spec->gen.preferred_dacs = preferred_pairs;
+}
+
 static void alc_shutup_dell_xps13(struct hda_codec *codec)
 {
 	struct alc_spec *spec = codec->spec;
@@ -5708,6 +5716,7 @@ enum {
 	ALC700_FIXUP_INTEL_REFERENCE,
 	ALC274_FIXUP_DELL_BIND_DACS,
 	ALC274_FIXUP_DELL_AIO_LINEOUT_VERB,
+	ALC298_FIXUP_TPT470_DOCK_FIX,
 	ALC298_FIXUP_TPT470_DOCK,
 	ALC255_FIXUP_DUMMY_LINEOUT_VERB,
 	ALC255_FIXUP_DELL_HEADSET_MIC,
@@ -6605,12 +6614,18 @@ static const struct hda_fixup alc269_fixups[] = {
 		.chained = true,
 		.chain_id = ALC274_FIXUP_DELL_BIND_DACS
 	},
-	[ALC298_FIXUP_TPT470_DOCK] = {
+	[ALC298_FIXUP_TPT470_DOCK_FIX] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc_fixup_tpt470_dock,
 		.chained = true,
 		.chain_id = ALC293_FIXUP_LENOVO_SPK_NOISE
 	},
+	[ALC298_FIXUP_TPT470_DOCK] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc_fixup_tpt470_dacs,
+		.chained = true,
+		.chain_id = ALC298_FIXUP_TPT470_DOCK_FIX
+	},
 	[ALC255_FIXUP_DUMMY_LINEOUT_VERB] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {
@@ -7173,6 +7188,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
 	{.id = ALC292_FIXUP_TPT440_DOCK, .name = "tpt440-dock"},
 	{.id = ALC292_FIXUP_TPT440, .name = "tpt440"},
 	{.id = ALC292_FIXUP_TPT460, .name = "tpt460"},
+	{.id = ALC298_FIXUP_TPT470_DOCK_FIX, .name = "tpt470-dock-fix"},
 	{.id = ALC298_FIXUP_TPT470_DOCK, .name = "tpt470-dock"},
 	{.id = ALC233_FIXUP_LENOVO_MULTI_CODECS, .name = "dual-codecs"},
 	{.id = ALC700_FIXUP_INTEL_REFERENCE, .name = "alc700-ref"},
-- 
2.25.1

[PATCH 4.19 59/95] ALSA: usb-audio: mixer: volume quirk for ESS Technology Asus USB DAC

[Greg Kroah-Hartman]

From: Chris Chiu <chiu@endlessm.com>

[ Upstream commit 4020d1ccbe55bdf67b31d718d2400506eaf4b43f ]

The Asus USB DAC is a USB type-C audio dongle for connecting to
the headset and headphone. The volume minimum value -23040 which
is 0xa600 in hexadecimal with the resolution value 1 indicates
this should be endianness issue caused by the firmware bug. Add
a volume quirk to fix the volume control problem.

Also fixes this warning:
  Warning! Unlikely big volume range (=23040), cval->res is probably wrong.
  [5] FU [Headset Capture Volume] ch = 1, val = -23040/0/1
  Warning! Unlikely big volume range (=23040), cval->res is probably wrong.
  [7] FU [Headset Playback Volume] ch = 1, val = -23040/0/1

Signed-off-by: Chris Chiu <chiu@endlessm.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200526062613.55401-1-chiu@endlessm.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 7a5c665cf4e4..8a0211131fc6 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1186,6 +1186,14 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
 			cval->res = 384;
 		}
 		break;
+	case USB_ID(0x0495, 0x3042): /* ESS Technology Asus USB DAC */
+		if ((strstr(kctl->id.name, "Playback Volume") != NULL) ||
+			strstr(kctl->id.name, "Capture Volume") != NULL) {
+			cval->min >>= 8;
+			cval->max = 0;
+			cval->res = 1;
+		}
+		break;
 	}
 }
 
-- 
2.25.1

[PATCH 4.19 60/95] exec: Always set cap_ambient in cap_bprm_set_creds

[Greg Kroah-Hartman]

From: Eric W. Biederman <ebiederm@xmission.com>

[ Upstream commit a4ae32c71fe90794127b32d26d7ad795813b502e ]

An invariant of cap_bprm_set_creds is that every field in the new cred
structure that cap_bprm_set_creds might set, needs to be set every
time to ensure the fields does not get a stale value.

The field cap_ambient is not set every time cap_bprm_set_creds is
called, which means that if there is a suid or sgid script with an
interpreter that has neither the suid nor the sgid bits set the
interpreter should be able to accept ambient credentials.
Unfortuantely because cap_ambient is not reset to it's original value
the interpreter can not accept ambient credentials.

Given that the ambient capability set is expected to be controlled by
the caller, I don't think this is particularly serious.  But it is
definitely worth fixing so the code works correctly.

I have tested to verify my reading of the code is correct and the
interpreter of a sgid can receive ambient capabilities with this
change and cannot receive ambient capabilities without this change.

Cc: stable@vger.kernel.org
Cc: Andy Lutomirski <luto@kernel.org>
Fixes: 58319057b784 ("capabilities: ambient capabilities")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 security/commoncap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/security/commoncap.c b/security/commoncap.c
index 3023b4ad38a7..f86557a8e43f 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -819,6 +819,7 @@ int cap_bprm_set_creds(struct linux_binprm *bprm)
 	int ret;
 	kuid_t root_uid;
 
+	new->cap_ambient = old->cap_ambient;
 	if (WARN_ON(!cap_ambient_invariant_ok(old)))
 		return -EPERM;
 
-- 
2.25.1

[PATCH 4.19 61/95] ALSA: usb-audio: Quirks for Gigabyte TRX40 Aorus Master onboard audio

[Greg Kroah-Hartman]

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 7f5ad9c9003425175f46c94df380e8c9e558cfb5 ]

Gigabyte TRX40 Aorus Master is equipped with two USB-audio devices,
a Realtek ALC1220-VB codec (USB ID 0414:a001) and an ESS SABRE9218 DAC
(USB ID 0414:a000).  The latter serves solely for the headphone output
on the front panel while the former serves for the rest I/Os (mostly
for the I/Os in the rear panel but also including the front mic).

Both chips do work more or less with the unmodified USB-audio driver,
but there are a few glitches.  The ALC1220-VB returns an error for an
inquiry to some jacks, as already seen on other TRX40-based mobos.
However this machine has a slightly incompatible configuration, hence
the existing mapping cannot be used as is.

Meanwhile the ESS chip seems working without any quirk.  But since
both audio devices don't provide any specific names, both cards appear
as "USB-Audio", and it's quite confusing for users.

This patch is an attempt to overcome those issues:

- The specific mapping table for ALC1220-VB is provided, reducing the
  non-working nodes and renaming the badly chosen controls.
  The connector map isn't needed here unlike other TRX40 quirks.

- For both USB IDs (0414:a000 and 0414:a001), provide specific card
  name strings, so that user-space can identify more easily; and more
  importantly, UCM profile can be applied to each.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200526082810.29506-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_maps.c   | 19 +++++++++++++++++++
 sound/usb/quirks-table.h | 25 +++++++++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index d7a8b23b335b..10323e6f7f97 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -401,6 +401,21 @@ static const struct usbmix_connector_map trx40_mobo_connector_map[] = {
 	{}
 };
 
+/* Rear panel + front mic on Gigabyte TRX40 Aorus Master with ALC1220-VB */
+static const struct usbmix_name_map aorus_master_alc1220vb_map[] = {
+	{ 17, NULL },			/* OT, IEC958?, disabled */
+	{ 19, NULL, 12 }, /* FU, Input Gain Pad - broken response, disabled */
+	{ 16, "Line Out" },		/* OT */
+	{ 22, "Line Out Playback" },	/* FU */
+	{ 7, "Line" },			/* IT */
+	{ 19, "Line Capture" },		/* FU */
+	{ 8, "Mic" },			/* IT */
+	{ 20, "Mic Capture" },		/* FU */
+	{ 9, "Front Mic" },		/* IT */
+	{ 21, "Front Mic Capture" },	/* FU */
+	{}
+};
+
 /*
  * Control map entries
  */
@@ -520,6 +535,10 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
 		.id = USB_ID(0x05a7, 0x1020),
 		.map = bose_companion5_map,
 	},
+	{	/* Gigabyte TRX40 Aorus Master (rear panel + front mic) */
+		.id = USB_ID(0x0414, 0xa001),
+		.map = aorus_master_alc1220vb_map,
+	},
 	{	/* Gigabyte TRX40 Aorus Pro WiFi */
 		.id = USB_ID(0x0414, 0xa002),
 		.map = trx40_mobo_map,
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 4f8a2b98e090..b798eae0a785 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -3415,4 +3415,29 @@ ALC1220_VB_DESKTOP(0x0db0, 0x543d), /* MSI TRX40 */
 ALC1220_VB_DESKTOP(0x26ce, 0x0a01), /* Asrock TRX40 Creator */
 #undef ALC1220_VB_DESKTOP
 
+/* Two entries for Gigabyte TRX40 Aorus Master:
+ * TRX40 Aorus Master has two USB-audio devices, one for the front headphone
+ * with ESS SABRE9218 DAC chip, while another for the rest I/O (the rear
+ * panel and the front mic) with Realtek ALC1220-VB.
+ * Here we provide two distinct names for making UCM profiles easier.
+ */
+{
+	USB_DEVICE(0x0414, 0xa000),
+	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+		.vendor_name = "Gigabyte",
+		.product_name = "Aorus Master Front Headphone",
+		.profile_name = "Gigabyte-Aorus-Master-Front-Headphone",
+		.ifnum = QUIRK_NO_INTERFACE
+	}
+},
+{
+	USB_DEVICE(0x0414, 0xa001),
+	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+		.vendor_name = "Gigabyte",
+		.product_name = "Aorus Master Main Audio",
+		.profile_name = "Gigabyte-Aorus-Master-Main-Audio",
+		.ifnum = QUIRK_NO_INTERFACE
+	}
+},
+
 #undef USB_DEVICE_VENDOR_SPEC
-- 
2.25.1

[PATCH 4.19 62/95] ALSA: hda/realtek - Add new codec supported for ALC287

[Greg Kroah-Hartman]

From: Kailang Yang <kailang@realtek.com>

[ Upstream commit 630e36126e420e1756378b3427b42711ce0b9ddd ]

Enable new codec supported for ALC287.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/dcf5ce5507104d0589a917cbb71dc3c6@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pci/hda/patch_realtek.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 34cda0accbd8..b06f7d52faad 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -387,6 +387,7 @@ static void alc_fill_eapd_coef(struct hda_codec *codec)
 	case 0x10ec0282:
 	case 0x10ec0283:
 	case 0x10ec0286:
+	case 0x10ec0287:
 	case 0x10ec0288:
 	case 0x10ec0285:
 	case 0x10ec0298:
@@ -7840,6 +7841,7 @@ static int patch_alc269(struct hda_codec *codec)
 	case 0x10ec0215:
 	case 0x10ec0245:
 	case 0x10ec0285:
+	case 0x10ec0287:
 	case 0x10ec0289:
 		spec->codec_variant = ALC269_TYPE_ALC215;
 		spec->shutup = alc225_shutup;
@@ -8978,6 +8980,7 @@ static const struct hda_device_id snd_hda_id_realtek[] = {
 	HDA_CODEC_ENTRY(0x10ec0284, "ALC284", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0285, "ALC285", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0286, "ALC286", patch_alc269),
+	HDA_CODEC_ENTRY(0x10ec0287, "ALC287", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0288, "ALC288", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0289, "ALC289", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0290, "ALC290", patch_alc269),
-- 
2.25.1

[PATCH 4.19 63/95] libceph: ignore pool overlay and cache logic on redirects

[Greg Kroah-Hartman]

From: Jerry Lee <leisurelysw24@gmail.com>

[ Upstream commit 890bd0f8997ae6ac0a367dd5146154a3963306dd ]

OSD client should ignore cache/overlay flag if got redirect reply.
Otherwise, the client hangs when the cache tier is in forward mode.

[ idryomov: Redirects are effectively deprecated and no longer
  used or tested.  The original tiering modes based on redirects
  are inherently flawed because redirects can race and reorder,
  potentially resulting in data corruption.  The new proxy and
  readproxy tiering modes should be used instead of forward and
  readforward.  Still marking for stable as obviously correct,
  though. ]

Cc: stable@vger.kernel.org
URL: https://tracker.ceph.com/issues/23296
URL: https://tracker.ceph.com/issues/36406
Signed-off-by: Jerry Lee <leisurelysw24@gmail.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ceph/osd_client.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 76c41a84550e..b8c4aea42917 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -3540,7 +3540,9 @@ static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg)
 		 * supported.
 		 */
 		req->r_t.target_oloc.pool = m.redirect.oloc.pool;
-		req->r_flags |= CEPH_OSD_FLAG_REDIRECTED;
+		req->r_flags |= CEPH_OSD_FLAG_REDIRECTED |
+				CEPH_OSD_FLAG_IGNORE_OVERLAY |
+				CEPH_OSD_FLAG_IGNORE_CACHE;
 		req->r_tid = 0;
 		__submit_request(req, false);
 		goto out_unlock_osdc;
-- 
2.25.1

[PATCH 4.19 64/95] IB/ipoib: Fix double free of skb in case of multicast traffic in CM mode

[Greg Kroah-Hartman]

From: Valentine Fatiev <valentinef@mellanox.com>

[ Upstream commit 1acba6a817852d4aa7916d5c4f2c82f702ee9224 ]

When connected mode is set, and we have connected and datagram traffic in
parallel, ipoib might crash with double free of datagram skb.

The current mechanism assumes that the order in the completion queue is
the same as the order of sent packets for all QPs. Order is kept only for
specific QP, in case of mixed UD and CM traffic we have few QPs (one UD and
few CM's) in parallel.

The problem:
----------------------------------------------------------

Transmit queue:
-----------------
UD skb pointer kept in queue itself, CM skb kept in spearate queue and
uses transmit queue as a placeholder to count the number of total
transmitted packets.

0   1   2   3   4  5  6  7  8   9  10  11 12 13 .........127
------------------------------------------------------------
NL ud1 UD2 CM1 ud3 cm2 cm3 ud4 cm4 ud5 NL NL NL ...........
------------------------------------------------------------
    ^                                  ^
   tail                               head

Completion queue (problematic scenario) - the order not the same as in
the transmit queue:

  1  2  3  4  5  6  7  8  9
------------------------------------
 ud1 CM1 UD2 ud3 cm2 cm3 ud4 cm4 ud5
------------------------------------

1. CM1 'wc' processing
   - skb freed in cm separate ring.
   - tx_tail of transmit queue increased although UD2 is not freed.
     Now driver assumes UD2 index is already freed and it could be used for
     new transmitted skb.

0   1   2   3   4  5  6  7  8   9  10  11 12 13 .........127
------------------------------------------------------------
NL NL  UD2 CM1 ud3 cm2 cm3 ud4 cm4 ud5 NL NL NL ...........
------------------------------------------------------------
        ^   ^                       ^
      (Bad)tail                    head
(Bad - Could be used for new SKB)

In this case (due to heavy load) UD2 skb pointer could be replaced by new
transmitted packet UD_NEW, as the driver assumes its free.  At this point
we will have to process two 'wc' with same index but we have only one
pointer to free.

During second attempt to free the same skb we will have NULL pointer
exception.

2. UD2 'wc' processing
   - skb freed according the index we got from 'wc', but it was already
     overwritten by mistake. So actually the skb that was released is the
     skb of the new transmitted packet and not the original one.

3. UD_NEW 'wc' processing
   - attempt to free already freed skb. NUll pointer exception.

The fix:
-----------------------------------------------------------------------

The fix is to stop using the UD ring as a placeholder for CM packets, the
cyclic ring variables tx_head and tx_tail will manage the UD tx_ring, a
new cyclic variables global_tx_head and global_tx_tail are introduced for
managing and counting the overall outstanding sent packets, then the send
queue will be stopped and waken based on these variables only.

Note that no locking is needed since global_tx_head is updated in the xmit
flow and global_tx_tail is updated in the NAPI flow only.  A previous
attempt tried to use one variable to count the outstanding sent packets,
but it did not work since xmit and NAPI flows can run at the same time and
the counter will be updated wrongly. Thus, we use the same simple cyclic
head and tail scheme that we have today for the UD tx_ring.

Fixes: 2c104ea68350 ("IB/ipoib: Get rid of the tx_outstanding variable in all modes")
Link: https://lore.kernel.org/r/20200527134705.480068-1-leon@kernel.org
Signed-off-by: Valentine Fatiev <valentinef@mellanox.com>
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/ulp/ipoib/ipoib.h      |  4 ++++
 drivers/infiniband/ulp/ipoib/ipoib_cm.c   | 15 +++++++++------
 drivers/infiniband/ulp/ipoib/ipoib_ib.c   |  9 +++++++--
 drivers/infiniband/ulp/ipoib/ipoib_main.c | 10 ++++++----
 4 files changed, 26 insertions(+), 12 deletions(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index b22d02c9de90..85267bbf4836 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -377,8 +377,12 @@ struct ipoib_dev_priv {
 	struct ipoib_rx_buf *rx_ring;
 
 	struct ipoib_tx_buf *tx_ring;
+	/* cyclic ring variables for managing tx_ring, for UD only */
 	unsigned int	     tx_head;
 	unsigned int	     tx_tail;
+	/* cyclic ring variables for counting overall outstanding send WRs */
+	unsigned int	     global_tx_head;
+	unsigned int	     global_tx_tail;
 	struct ib_sge	     tx_sge[MAX_SKB_FRAGS + 1];
 	struct ib_ud_wr      tx_wr;
 	struct ib_wc	     send_wc[MAX_SEND_CQE];
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index aa9dcfc36cd3..196f1e6b5396 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -756,7 +756,8 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_
 		return;
 	}
 
-	if ((priv->tx_head - priv->tx_tail) == ipoib_sendq_size - 1) {
+	if ((priv->global_tx_head - priv->global_tx_tail) ==
+	    ipoib_sendq_size - 1) {
 		ipoib_dbg(priv, "TX ring 0x%x full, stopping kernel net queue\n",
 			  tx->qp->qp_num);
 		netif_stop_queue(dev);
@@ -786,7 +787,7 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_
 	} else {
 		netif_trans_update(dev);
 		++tx->tx_head;
-		++priv->tx_head;
+		++priv->global_tx_head;
 	}
 }
 
@@ -820,10 +821,11 @@ void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 	netif_tx_lock(dev);
 
 	++tx->tx_tail;
-	++priv->tx_tail;
+	++priv->global_tx_tail;
 
 	if (unlikely(netif_queue_stopped(dev) &&
-		     (priv->tx_head - priv->tx_tail) <= ipoib_sendq_size >> 1 &&
+		     ((priv->global_tx_head - priv->global_tx_tail) <=
+		      ipoib_sendq_size >> 1) &&
 		     test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)))
 		netif_wake_queue(dev);
 
@@ -1233,8 +1235,9 @@ timeout:
 		dev_kfree_skb_any(tx_req->skb);
 		netif_tx_lock_bh(p->dev);
 		++p->tx_tail;
-		++priv->tx_tail;
-		if (unlikely(priv->tx_head - priv->tx_tail == ipoib_sendq_size >> 1) &&
+		++priv->global_tx_tail;
+		if (unlikely((priv->global_tx_head - priv->global_tx_tail) <=
+			     ipoib_sendq_size >> 1) &&
 		    netif_queue_stopped(p->dev) &&
 		    test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
 			netif_wake_queue(p->dev);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 9006a13af1de..0f2e80f54d33 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -406,9 +406,11 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 	dev_kfree_skb_any(tx_req->skb);
 
 	++priv->tx_tail;
+	++priv->global_tx_tail;
 
 	if (unlikely(netif_queue_stopped(dev) &&
-		     ((priv->tx_head - priv->tx_tail) <= ipoib_sendq_size >> 1) &&
+		     ((priv->global_tx_head - priv->global_tx_tail) <=
+		      ipoib_sendq_size >> 1) &&
 		     test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)))
 		netif_wake_queue(dev);
 
@@ -633,7 +635,8 @@ int ipoib_send(struct net_device *dev, struct sk_buff *skb,
 	else
 		priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM;
 	/* increase the tx_head after send success, but use it for queue state */
-	if (priv->tx_head - priv->tx_tail == ipoib_sendq_size - 1) {
+	if ((priv->global_tx_head - priv->global_tx_tail) ==
+	    ipoib_sendq_size - 1) {
 		ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n");
 		netif_stop_queue(dev);
 	}
@@ -661,6 +664,7 @@ int ipoib_send(struct net_device *dev, struct sk_buff *skb,
 
 		rc = priv->tx_head;
 		++priv->tx_head;
+		++priv->global_tx_head;
 	}
 	return rc;
 }
@@ -807,6 +811,7 @@ int ipoib_ib_dev_stop_default(struct net_device *dev)
 				ipoib_dma_unmap_tx(priv, tx_req);
 				dev_kfree_skb_any(tx_req->skb);
 				++priv->tx_tail;
+				++priv->global_tx_tail;
 			}
 
 			for (i = 0; i < ipoib_recvq_size; ++i) {
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index d8cb5bbe6eb5..6093e8268583 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1188,9 +1188,11 @@ static void ipoib_timeout(struct net_device *dev)
 
 	ipoib_warn(priv, "transmit timeout: latency %d msecs\n",
 		   jiffies_to_msecs(jiffies - dev_trans_start(dev)));
-	ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n",
-		   netif_queue_stopped(dev),
-		   priv->tx_head, priv->tx_tail);
+	ipoib_warn(priv,
+		   "queue stopped %d, tx_head %u, tx_tail %u, global_tx_head %u, global_tx_tail %u\n",
+		   netif_queue_stopped(dev), priv->tx_head, priv->tx_tail,
+		   priv->global_tx_head, priv->global_tx_tail);
+
 	/* XXX reset QP, etc. */
 }
 
@@ -1705,7 +1707,7 @@ static int ipoib_dev_init_default(struct net_device *dev)
 		goto out_rx_ring_cleanup;
 	}
 
-	/* priv->tx_head, tx_tail & tx_outstanding are already 0 */
+	/* priv->tx_head, tx_tail and global_tx_tail/head are already 0 */
 
 	if (ipoib_transport_dev_init(dev, priv->ca)) {
 		pr_warn("%s: ipoib_transport_dev_init failed\n",
-- 
2.25.1

[PATCH 4.19 65/95] mm: remove VM_BUG_ON(PageSlab()) from page_mapcount()

[Greg Kroah-Hartman]

From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>

[ Upstream commit 6988f31d558aa8c744464a7f6d91d34ada48ad12 ]

Replace superfluous VM_BUG_ON() with comment about correct usage.

Technically reverts commit 1d148e218a0d ("mm: add VM_BUG_ON_PAGE() to
page_mapcount()"), but context lines have changed.

Function isolate_migratepages_block() runs some checks out of lru_lock
when choose pages for migration.  After checking PageLRU() it checks
extra page references by comparing page_count() and page_mapcount().
Between these two checks page could be removed from lru, freed and taken
by slab.

As a result this race triggers VM_BUG_ON(PageSlab()) in page_mapcount().
Race window is tiny.  For certain workload this happens around once a
year.

    page:ffffea0105ca9380 count:1 mapcount:0 mapping:ffff88ff7712c180 index:0x0 compound_mapcount: 0
    flags: 0x500000000008100(slab|head)
    raw: 0500000000008100 dead000000000100 dead000000000200 ffff88ff7712c180
    raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
    page dumped because: VM_BUG_ON_PAGE(PageSlab(page))
    ------------[ cut here ]------------
    kernel BUG at ./include/linux/mm.h:628!
    invalid opcode: 0000 [#1] SMP NOPTI
    CPU: 77 PID: 504 Comm: kcompactd1 Tainted: G        W         4.19.109-27 #1
    Hardware name: Yandex T175-N41-Y3N/MY81-EX0-Y3N, BIOS R05 06/20/2019
    RIP: 0010:isolate_migratepages_block+0x986/0x9b0

The code in isolate_migratepages_block() was added in commit
119d6d59dcc0 ("mm, compaction: avoid isolating pinned pages") before
adding VM_BUG_ON into page_mapcount().

This race has been predicted in 2015 by Vlastimil Babka (see link
below).

[akpm@linux-foundation.org: comment tweaks, per Hugh]
Fixes: 1d148e218a0d ("mm: add VM_BUG_ON_PAGE() to page_mapcount()")
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/159032779896.957378.7852761411265662220.stgit@buzz
Link: https://lore.kernel.org/lkml/557710E1.6060103@suse.cz/
Link: https://lore.kernel.org/linux-mm/158937872515.474360.5066096871639561424.stgit@buzz/T/ (v1)
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/mm.h | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 45f10f5896b7..b1092046ebef 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -602,6 +602,11 @@ static inline void *kvcalloc(size_t n, size_t size, gfp_t flags)
 
 extern void kvfree(const void *addr);
 
+/*
+ * Mapcount of compound page as a whole, does not include mapped sub-pages.
+ *
+ * Must be called only for compound pages or any their tail sub-pages.
+ */
 static inline int compound_mapcount(struct page *page)
 {
 	VM_BUG_ON_PAGE(!PageCompound(page), page);
@@ -621,10 +626,16 @@ static inline void page_mapcount_reset(struct page *page)
 
 int __page_mapcount(struct page *page);
 
+/*
+ * Mapcount of 0-order page; when compound sub-page, includes
+ * compound_mapcount().
+ *
+ * Result is undefined for pages which cannot be mapped into userspace.
+ * For example SLAB or special types of pages. See function page_has_type().
+ * They use this place in struct page differently.
+ */
 static inline int page_mapcount(struct page *page)
 {
-	VM_BUG_ON_PAGE(PageSlab(page), page);
-
 	if (unlikely(PageCompound(page)))
 		return __page_mapcount(page);
 	return atomic_read(&page->_mapcount) + 1;
-- 
2.25.1

[PATCH 4.19 66/95] fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info()

[Greg Kroah-Hartman]

From: Alexander Potapenko <glider@google.com>

[ Upstream commit 1d605416fb7175e1adf094251466caa52093b413 ]

KMSAN reported uninitialized data being written to disk when dumping
core.  As a result, several kilobytes of kmalloc memory may be written
to the core file and then read by a non-privileged user.

Reported-by: sam <sunhaoyl@outlook.com>
Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200419100848.63472-1-glider@google.com
Link: https://github.com/google/kmsan/issues/76
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/binfmt_elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index e7fd0b5b9234..975dd0dbc252 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1766,7 +1766,7 @@ static int fill_thread_core_info(struct elf_thread_core_info *t,
 		    (!regset->active || regset->active(t->task, regset) > 0)) {
 			int ret;
 			size_t size = regset_size(t->task, regset);
-			void *data = kmalloc(size, GFP_KERNEL);
+			void *data = kzalloc(size, GFP_KERNEL);
 			if (unlikely(!data))
 				return 0;
 			ret = regset->get(t->task, regset,
-- 
2.25.1

[PATCH 4.19 67/95] include/asm-generic/topology.h: guard cpumask_of_node() macro argument

[Greg Kroah-Hartman]

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit 4377748c7b5187c3342a60fa2ceb60c8a57a8488 ]

drivers/hwmon/amd_energy.c:195:15: error: invalid operands to binary expression ('void' and 'int')
                                        (channel - data->nr_cpus));
                                        ~~~~~~~~~^~~~~~~~~~~~~~~~~
include/asm-generic/topology.h:51:42: note: expanded from macro 'cpumask_of_node'
    #define cpumask_of_node(node)       ((void)node, cpu_online_mask)
                                               ^~~~
include/linux/cpumask.h:618:72: note: expanded from macro 'cpumask_first_and'
 #define cpumask_first_and(src1p, src2p) cpumask_next_and(-1, (src1p), (src2p))
                                                                       ^~~~~

Fixes: f0b848ce6fe9 ("cpumask: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask")
Fixes: 8abee9566b7e ("hwmon: Add amd_energy driver to report energy counters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: http://lkml.kernel.org/r/20200527134623.930247-1-arnd@arndb.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/asm-generic/topology.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index 238873739550..5aa8705df87e 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -48,7 +48,7 @@
   #ifdef CONFIG_NEED_MULTIPLE_NODES
     #define cpumask_of_node(node)	((node) == 0 ? cpu_online_mask : cpu_none_mask)
   #else
-    #define cpumask_of_node(node)	((void)node, cpu_online_mask)
+    #define cpumask_of_node(node)	((void)(node), cpu_online_mask)
   #endif
 #endif
 #ifndef pcibus_to_node
-- 
2.25.1

[PATCH 4.19 68/95] iommu: Fix reference count leak in iommu_group_alloc.

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000273@umn.edu>

[ Upstream commit 7cc31613734c4870ae32f5265d576ef296621343 ]

kobject_init_and_add() takes reference even when it fails.
Thus, when kobject_init_and_add() returns an error,
kobject_put() must be called to properly clean up the kobject.

Fixes: d72e31c93746 ("iommu: IOMMU Groups")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Link: https://lore.kernel.org/r/20200527210020.6522-1-wu000273@umn.edu
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/iommu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -392,7 +392,7 @@ struct iommu_group *iommu_group_alloc(vo
 				   NULL, "%d", group->id);
 	if (ret) {
 		ida_simple_remove(&iommu_group_ida, group->id);
-		kfree(group);
+		kobject_put(&group->kobj);
 		return ERR_PTR(ret);
 	}
 

[PATCH 4.19 69/95] parisc: Fix kernel panic in mem_init()

[Greg Kroah-Hartman]

From: Helge Deller <deller@gmx.de>

commit bf71bc16e02162388808949b179d59d0b571b965 upstream.

The Debian kernel v5.6 triggers this kernel panic:

 Kernel panic - not syncing: Bad Address (null pointer deref?)
 Bad Address (null pointer deref?): Code=26 (Data memory access rights trap) at addr 0000000000000000
 CPU: 0 PID: 0 Comm: swapper Not tainted 5.6.0-2-parisc64 #1 Debian 5.6.14-1
  IAOQ[0]: mem_init+0xb0/0x150
  IAOQ[1]: mem_init+0xb4/0x150
  RP(r2): start_kernel+0x6c8/0x1190
 Backtrace:
  [<0000000040101ab4>] start_kernel+0x6c8/0x1190
  [<0000000040108574>] start_parisc+0x158/0x1b8

on a HP-PARISC rp3440 machine with this memory layout:
 Memory Ranges:
  0) Start 0x0000000000000000 End 0x000000003fffffff Size   1024 MB
  1) Start 0x0000004040000000 End 0x00000040ffdfffff Size   3070 MB

Fix the crash by avoiding virt_to_page() and similar functions in
mem_init() until the memory zones have been fully set up.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>


---
 arch/parisc/mm/init.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -607,7 +607,7 @@ void __init mem_init(void)
 			> BITS_PER_LONG);
 
 	high_memory = __va((max_pfn << PAGE_SHIFT));
-	set_max_mapnr(page_to_pfn(virt_to_page(high_memory - 1)) + 1);
+	set_max_mapnr(max_low_pfn);
 	free_all_bootmem();
 
 #ifdef CONFIG_PA11

[PATCH 4.19 70/95] mmc: core: Fix recursive locking issue in CQE recovery path

[Greg Kroah-Hartman]

From: Sarthak Garg <sartgarg@codeaurora.org>

commit 39a22f73744d5baee30b5f134ae2e30b668b66ed upstream.

Consider the following stack trace

-001|raw_spin_lock_irqsave
-002|mmc_blk_cqe_complete_rq
-003|__blk_mq_complete_request(inline)
-003|blk_mq_complete_request(rq)
-004|mmc_cqe_timed_out(inline)
-004|mmc_mq_timed_out

mmc_mq_timed_out acquires the queue_lock for the first
time. The mmc_blk_cqe_complete_rq function also tries to acquire
the same queue lock resulting in recursive locking where the task
is spinning for the same lock which it has already acquired leading
to watchdog bark.

Fix this issue with the lock only for the required critical section.

Cc: <stable@vger.kernel.org>
Fixes: 1e8e55b67030 ("mmc: block: Add CQE support")
Suggested-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Sarthak Garg <sartgarg@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1588868135-31783-1-git-send-email-vbadigan@codeaurora.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mmc/core/queue.c |   13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -108,7 +108,7 @@ static enum blk_eh_timer_return mmc_cqe_
 	case MMC_ISSUE_DCMD:
 		if (host->cqe_ops->cqe_timeout(host, mrq, &recovery_needed)) {
 			if (recovery_needed)
-				__mmc_cqe_recovery_notifier(mq);
+				mmc_cqe_recovery_notifier(mrq);
 			return BLK_EH_RESET_TIMER;
 		}
 		/* The request has gone already */
@@ -125,18 +125,13 @@ static enum blk_eh_timer_return mmc_mq_t
 	struct request_queue *q = req->q;
 	struct mmc_queue *mq = q->queuedata;
 	unsigned long flags;
-	int ret;
+	bool ignore_tout;
 
 	spin_lock_irqsave(q->queue_lock, flags);
-
-	if (mq->recovery_needed || !mq->use_cqe)
-		ret = BLK_EH_RESET_TIMER;
-	else
-		ret = mmc_cqe_timed_out(req);
-
+	ignore_tout = mq->recovery_needed || !mq->use_cqe;
 	spin_unlock_irqrestore(q->queue_lock, flags);
 
-	return ret;
+	return ignore_tout ? BLK_EH_RESET_TIMER : mmc_cqe_timed_out(req);
 }
 
 static void mmc_mq_recovery_handler(struct work_struct *work)

[PATCH 4.19 71/95] RDMA/core: Fix double destruction of uobject

[Greg Kroah-Hartman]

From: Jason Gunthorpe <jgg@mellanox.com>

commit c85f4abe66bea0b5db8d28d55da760c4fe0a0301 upstream.

Fix use after free when user user space request uobject concurrently for
the same object, within the RCU grace period.

In that case, remove_handle_idr_uobject() is called twice and we will have
an extra put on the uobject which cause use after free.  Fix it by leaving
the uobject write locked after it was removed from the idr.

Call to rdma_lookup_put_uobject with UVERBS_LOOKUP_DESTROY instead of
UVERBS_LOOKUP_WRITE will do the work.

  refcount_t: underflow; use-after-free.
  WARNING: CPU: 0 PID: 1381 at lib/refcount.c:28 refcount_warn_saturate+0xfe/0x1a0
  Kernel panic - not syncing: panic_on_warn set ...
  CPU: 0 PID: 1381 Comm: syz-executor.0 Not tainted 5.5.0-rc3 #8
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
  Call Trace:
   dump_stack+0x94/0xce
   panic+0x234/0x56f
   __warn+0x1cc/0x1e1
   report_bug+0x200/0x310
   fixup_bug.part.11+0x32/0x80
   do_error_trap+0xd3/0x100
   do_invalid_op+0x31/0x40
   invalid_op+0x1e/0x30
  RIP: 0010:refcount_warn_saturate+0xfe/0x1a0
  Code: 0f 0b eb 9b e8 23 f6 6d ff 80 3d 6c d4 19 03 00 75 8d e8 15 f6 6d ff 48 c7 c7 c0 02 55 bd c6 05 57 d4 19 03 01 e8 a2 58 49 ff <0f> 0b e9 6e ff ff ff e8 f6 f5 6d ff 80 3d 42 d4 19 03 00 0f 85 5c
  RSP: 0018:ffffc90002df7b98 EFLAGS: 00010282
  RAX: 0000000000000000 RBX: ffff88810f6a193c RCX: ffffffffba649009
  RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811b0283cc
  RBP: 0000000000000003 R08: ffffed10236060e3 R09: ffffed10236060e3
  R10: 0000000000000001 R11: ffffed10236060e2 R12: ffff88810f6a193c
  R13: ffffc90002df7d60 R14: 0000000000000000 R15: ffff888116ae6a08
   uverbs_uobject_put+0xfd/0x140
   __uobj_perform_destroy+0x3d/0x60
   ib_uverbs_close_xrcd+0x148/0x170
   ib_uverbs_write+0xaa5/0xdf0
   __vfs_write+0x7c/0x100
   vfs_write+0x168/0x4a0
   ksys_write+0xc8/0x200
   do_syscall_64+0x9c/0x390
   entry_SYSCALL_64_after_hwframe+0x44/0xa9
  RIP: 0033:0x465b49
  Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
  RSP: 002b:00007f759d122c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
  RAX: ffffffffffffffda RBX: 000000000073bfa8 RCX: 0000000000465b49
  RDX: 000000000000000c RSI: 0000000020000080 RDI: 0000000000000003
  RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
  R10: 0000000000000000 R11: 0000000000000246 R12: 00007f759d1236bc
  R13: 00000000004ca27c R14: 000000000070de40 R15: 00000000ffffffff
  Dumping ftrace buffer:
     (ftrace buffer empty)
  Kernel Offset: 0x39400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)

Fixes: 7452a3c745a2 ("IB/uverbs: Allow RDMA_REMOVE_DESTROY to work concurrently with disassociate")
Link: https://lore.kernel.org/r/20200527135534.482279-1-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/core/rdma_core.c |   19 +++++++++++++------
 include/rdma/uverbs_std_types.h     |    2 +-
 2 files changed, 14 insertions(+), 7 deletions(-)

--- a/drivers/infiniband/core/rdma_core.c
+++ b/drivers/infiniband/core/rdma_core.c
@@ -158,9 +158,9 @@ static int uverbs_destroy_uobject(struct
 	uobj->context = NULL;
 
 	/*
-	 * For DESTROY the usecnt is held write locked, the caller is expected
-	 * to put it unlock and put the object when done with it. Only DESTROY
-	 * can remove the IDR handle.
+	 * For DESTROY the usecnt is not changed, the caller is expected to
+	 * manage it via uobj_put_destroy(). Only DESTROY can remove the IDR
+	 * handle.
 	 */
 	if (reason != RDMA_REMOVE_DESTROY)
 		atomic_set(&uobj->usecnt, 0);
@@ -192,7 +192,7 @@ static int uverbs_destroy_uobject(struct
 /*
  * This calls uverbs_destroy_uobject() using the RDMA_REMOVE_DESTROY
  * sequence. It should only be used from command callbacks. On success the
- * caller must pair this with rdma_lookup_put_uobject(LOOKUP_WRITE). This
+ * caller must pair this with uobj_put_destroy(). This
  * version requires the caller to have already obtained an
  * LOOKUP_DESTROY uobject kref.
  */
@@ -203,6 +203,13 @@ int uobj_destroy(struct ib_uobject *uobj
 
 	down_read(&ufile->hw_destroy_rwsem);
 
+	/*
+	 * Once the uobject is destroyed by RDMA_REMOVE_DESTROY then it is left
+	 * write locked as the callers put it back with UVERBS_LOOKUP_DESTROY.
+	 * This is because any other concurrent thread can still see the object
+	 * in the xarray due to RCU. Leaving it locked ensures nothing else will
+	 * touch it.
+	 */
 	ret = uverbs_try_lock_object(uobj, UVERBS_LOOKUP_WRITE);
 	if (ret)
 		goto out_unlock;
@@ -221,7 +228,7 @@ out_unlock:
 /*
  * uobj_get_destroy destroys the HW object and returns a handle to the uobj
  * with a NULL object pointer. The caller must pair this with
- * uverbs_put_destroy.
+ * uobj_put_destroy().
  */
 struct ib_uobject *__uobj_get_destroy(const struct uverbs_api_object *obj,
 				      u32 id, struct ib_uverbs_file *ufile)
@@ -256,7 +263,7 @@ int __uobj_perform_destroy(const struct
 	if (IS_ERR(uobj))
 		return PTR_ERR(uobj);
 
-	rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
+	uobj_put_destroy(uobj);
 	return success_res;
 }
 
--- a/include/rdma/uverbs_std_types.h
+++ b/include/rdma/uverbs_std_types.h
@@ -95,7 +95,7 @@ struct ib_uobject *__uobj_get_destroy(co
 
 static inline void uobj_put_destroy(struct ib_uobject *uobj)
 {
-	rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE);
+	rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_DESTROY);
 }
 
 static inline void uobj_put_read(struct ib_uobject *uobj)

[PATCH 4.19 72/95] mac80211: mesh: fix discovery timer re-arming issue / crash

[Greg Kroah-Hartman]

From: Linus Lüssing <ll@simonwunderlich.de>

commit e2d4a80f93fcfaf72e2e20daf6a28e39c3b90677 upstream.

On a non-forwarding 802.11s link between two fairly busy
neighboring nodes (iperf with -P 16 at ~850MBit/s TCP;
1733.3 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 4), so with
frequent PREQ retries, usually after around 30-40 seconds the
following crash would occur:

[ 1110.822428] Unable to handle kernel read from unreadable memory at virtual address 00000000
[ 1110.830786] Mem abort info:
[ 1110.833573]   Exception class = IABT (current EL), IL = 32 bits
[ 1110.839494]   SET = 0, FnV = 0
[ 1110.842546]   EA = 0, S1PTW = 0
[ 1110.845678] user pgtable: 4k pages, 48-bit VAs, pgd = ffff800076386000
[ 1110.852204] [0000000000000000] *pgd=00000000f6322003, *pud=00000000f62de003, *pmd=0000000000000000
[ 1110.861167] Internal error: Oops: 86000004 [#1] PREEMPT SMP
[ 1110.866730] Modules linked in: pppoe ppp_async batman_adv ath10k_pci ath10k_core ath pppox ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_FLOWOFFLOAD slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_mangle iptable_filter ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 usb_storage xhci_plat_hcd xhci_pci xhci_hcd dwc3 usbcore usb_common
[ 1110.932190] Process swapper/3 (pid: 0, stack limit = 0xffff0000090c8000)
[ 1110.938884] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.14.162 #0
[ 1110.944965] Hardware name: LS1043A RGW Board (DT)
[ 1110.949658] task: ffff8000787a81c0 task.stack: ffff0000090c8000
[ 1110.955568] PC is at 0x0
[ 1110.958097] LR is at call_timer_fn.isra.27+0x24/0x78
[ 1110.963055] pc : [<0000000000000000>] lr : [<ffff0000080ff29c>] pstate: 00400145
[ 1110.970440] sp : ffff00000801be10
[ 1110.973744] x29: ffff00000801be10 x28: ffff000008bf7018
[ 1110.979047] x27: ffff000008bf87c8 x26: ffff000008c160c0
[ 1110.984352] x25: 0000000000000000 x24: 0000000000000000
[ 1110.989657] x23: dead000000000200 x22: 0000000000000000
[ 1110.994959] x21: 0000000000000000 x20: 0000000000000101
[ 1111.000262] x19: ffff8000787a81c0 x18: 0000000000000000
[ 1111.005565] x17: ffff0000089167b0 x16: 0000000000000058
[ 1111.010868] x15: ffff0000089167b0 x14: 0000000000000000
[ 1111.016172] x13: ffff000008916788 x12: 0000000000000040
[ 1111.021475] x11: ffff80007fda9af0 x10: 0000000000000001
[ 1111.026777] x9 : ffff00000801bea0 x8 : 0000000000000004
[ 1111.032080] x7 : 0000000000000000 x6 : ffff80007fda9aa8
[ 1111.037383] x5 : ffff00000801bea0 x4 : 0000000000000010
[ 1111.042685] x3 : ffff00000801be98 x2 : 0000000000000614
[ 1111.047988] x1 : 0000000000000000 x0 : 0000000000000000
[ 1111.053290] Call trace:
[ 1111.055728] Exception stack(0xffff00000801bcd0 to 0xffff00000801be10)
[ 1111.062158] bcc0:                                   0000000000000000 0000000000000000
[ 1111.069978] bce0: 0000000000000614 ffff00000801be98 0000000000000010 ffff00000801bea0
[ 1111.077798] bd00: ffff80007fda9aa8 0000000000000000 0000000000000004 ffff00000801bea0
[ 1111.085618] bd20: 0000000000000001 ffff80007fda9af0 0000000000000040 ffff000008916788
[ 1111.093437] bd40: 0000000000000000 ffff0000089167b0 0000000000000058 ffff0000089167b0
[ 1111.101256] bd60: 0000000000000000 ffff8000787a81c0 0000000000000101 0000000000000000
[ 1111.109075] bd80: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
[ 1111.116895] bda0: ffff000008c160c0 ffff000008bf87c8 ffff000008bf7018 ffff00000801be10
[ 1111.124715] bdc0: ffff0000080ff29c ffff00000801be10 0000000000000000 0000000000400145
[ 1111.132534] bde0: ffff8000787a81c0 ffff00000801bde8 0000ffffffffffff 000001029eb19be8
[ 1111.140353] be00: ffff00000801be10 0000000000000000
[ 1111.145220] [<          (null)>]           (null)
[ 1111.149917] [<ffff0000080ff77c>] run_timer_softirq+0x184/0x398
[ 1111.155741] [<ffff000008081938>] __do_softirq+0x100/0x1fc
[ 1111.161130] [<ffff0000080a2e28>] irq_exit+0x80/0xd8
[ 1111.166002] [<ffff0000080ea708>] __handle_domain_irq+0x88/0xb0
[ 1111.171825] [<ffff000008081678>] gic_handle_irq+0x68/0xb0
[ 1111.177213] Exception stack(0xffff0000090cbe30 to 0xffff0000090cbf70)
[ 1111.183642] be20:                                   0000000000000020 0000000000000000
[ 1111.191461] be40: 0000000000000001 0000000000000000 00008000771af000 0000000000000000
[ 1111.199281] be60: ffff000008c95180 0000000000000000 ffff000008c19360 ffff0000090cbef0
[ 1111.207101] be80: 0000000000000810 0000000000000400 0000000000000098 ffff000000000000
[ 1111.214920] bea0: 0000000000000001 ffff0000089167b0 0000000000000000 ffff0000089167b0
[ 1111.222740] bec0: 0000000000000000 ffff000008c198e8 ffff000008bf7018 ffff000008c19000
[ 1111.230559] bee0: 0000000000000000 0000000000000000 ffff8000787a81c0 ffff000008018000
[ 1111.238380] bf00: ffff00000801c000 ffff00000913ba34 ffff8000787a81c0 ffff0000090cbf70
[ 1111.246199] bf20: ffff0000080857cc ffff0000090cbf70 ffff0000080857d0 0000000000400145
[ 1111.254020] bf40: ffff000008018000 ffff00000801c000 ffffffffffffffff ffff0000080fa574
[ 1111.261838] bf60: ffff0000090cbf70 ffff0000080857d0
[ 1111.266706] [<ffff0000080832e8>] el1_irq+0xe8/0x18c
[ 1111.271576] [<ffff0000080857d0>] arch_cpu_idle+0x10/0x18
[ 1111.276880] [<ffff0000080d7de4>] do_idle+0xec/0x1b8
[ 1111.281748] [<ffff0000080d8020>] cpu_startup_entry+0x20/0x28
[ 1111.287399] [<ffff00000808f81c>] secondary_start_kernel+0x104/0x110
[ 1111.293662] Code: bad PC value
[ 1111.296710] ---[ end trace 555b6ca4363c3edd ]---
[ 1111.301318] Kernel panic - not syncing: Fatal exception in interrupt
[ 1111.307661] SMP: stopping secondary CPUs
[ 1111.311574] Kernel Offset: disabled
[ 1111.315053] CPU features: 0x0002000
[ 1111.318530] Memory Limit: none
[ 1111.321575] Rebooting in 3 seconds..

With some added debug output / delays we were able to push the crash from
the timer callback runner into the callback function and by that shedding
some light on which object holding the timer gets corrupted:

[  401.720899] Unable to handle kernel read from unreadable memory at virtual address 00000868
[...]
[  402.335836] [<ffff0000088fafa4>] _raw_spin_lock_bh+0x14/0x48
[  402.341548] [<ffff000000dbe684>] mesh_path_timer+0x10c/0x248 [mac80211]
[  402.348154] [<ffff0000080ff29c>] call_timer_fn.isra.27+0x24/0x78
[  402.354150] [<ffff0000080ff77c>] run_timer_softirq+0x184/0x398
[  402.359974] [<ffff000008081938>] __do_softirq+0x100/0x1fc
[  402.365362] [<ffff0000080a2e28>] irq_exit+0x80/0xd8
[  402.370231] [<ffff0000080ea708>] __handle_domain_irq+0x88/0xb0
[  402.376053] [<ffff000008081678>] gic_handle_irq+0x68/0xb0

The issue happens due to the following sequence of events:

1) mesh_path_start_discovery():
-> spin_unlock_bh(&mpath->state_lock) before mesh_path_sel_frame_tx()

2) mesh_path_free_rcu()
-> del_timer_sync(&mpath->timer)
   [...]
-> kfree_rcu(mpath)

3) mesh_path_start_discovery():
-> mod_timer(&mpath->timer, ...)
   [...]
-> rcu_read_unlock()

4) mesh_path_free_rcu()'s kfree_rcu():
-> kfree(mpath)

5) mesh_path_timer() starts after timeout, using freed mpath object

So a use-after-free issue due to a timer re-arming bug caused by an
early spin-unlocking.

This patch fixes this issue by re-checking if mpath is about to be
free'd and if so bails out of re-arming the timer.

Cc: stable@vger.kernel.org
Fixes: 050ac52cbe1f ("mac80211: code for on-demand Hybrid Wireless Mesh Protocol")
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Linus Lüssing <ll@simonwunderlich.de>
Link: https://lore.kernel.org/r/20200522170413.14973-1-linus.luessing@c0d3.blue
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/mac80211/mesh_hwmp.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -1088,7 +1088,14 @@ void mesh_path_start_discovery(struct ie
 	mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->vif.addr, ifmsh->sn,
 			       target_flags, mpath->dst, mpath->sn, da, 0,
 			       ttl, lifetime, 0, ifmsh->preq_id++, sdata);
+
+	spin_lock_bh(&mpath->state_lock);
+	if (mpath->flags & MESH_PATH_DELETED) {
+		spin_unlock_bh(&mpath->state_lock);
+		goto enddiscovery;
+	}
 	mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
+	spin_unlock_bh(&mpath->state_lock);
 
 enddiscovery:
 	rcu_read_unlock();

[PATCH 4.19 73/95] x86/dma: Fix max PFN arithmetic overflow on 32 bit systems

[Greg Kroah-Hartman]

From: Alexander Dahl <post@lespocky.de>

commit 88743470668ef5eb6b7ba9e0f99888e5999bf172 upstream.

The intermediate result of the old term (4UL * 1024 * 1024 * 1024) is
4 294 967 296 or 0x100000000 which is no problem on 64 bit systems.
The patch does not change the later overall result of 0x100000 for
MAX_DMA32_PFN (after it has been shifted by PAGE_SHIFT). The new
calculation yields the same result, but does not require 64 bit
arithmetic.

On 32 bit systems the old calculation suffers from an arithmetic
overflow in that intermediate term in braces: 4UL aka unsigned long int
is 4 byte wide and an arithmetic overflow happens (the 0x100000000 does
not fit in 4 bytes), the in braces result is truncated to zero, the
following right shift does not alter that, so MAX_DMA32_PFN evaluates to
0 on 32 bit systems.

That wrong value is a problem in a comparision against MAX_DMA32_PFN in
the init code for swiotlb in pci_swiotlb_detect_4gb() to decide if
swiotlb should be active.  That comparison yields the opposite result,
when compiling on 32 bit systems.

This was not possible before

  1b7e03ef7570 ("x86, NUMA: Enable emulation on 32bit too")

when that MAX_DMA32_PFN was first made visible to x86_32 (and which
landed in v3.0).

In practice this wasn't a problem, unless CONFIG_SWIOTLB is active on
x86-32.

However if one has set CONFIG_IOMMU_INTEL, since

  c5a5dc4cbbf4 ("iommu/vt-d: Don't switch off swiotlb if bounce page is used")

there's a dependency on CONFIG_SWIOTLB, which was not necessarily
active before. That landed in v5.4, where we noticed it in the fli4l
Linux distribution. We have CONFIG_IOMMU_INTEL active on both 32 and 64
bit kernel configs there (I could not find out why, so let's just say
historical reasons).

The effect is at boot time 64 MiB (default size) were allocated for
bounce buffers now, which is a noticeable amount of memory on small
systems like pcengines ALIX 2D3 with 256 MiB memory, which are still
frequently used as home routers.

We noticed this effect when migrating from kernel v4.19 (LTS) to v5.4
(LTS) in fli4l and got that kernel messages for example:

  Linux version 5.4.22 (buildroot@buildroot) (gcc version 7.3.0 (Buildroot 2018.02.8)) #1 SMP Mon Nov 26 23:40:00 CET 2018
  …
  Memory: 183484K/261756K available (4594K kernel code, 393K rwdata, 1660K rodata, 536K init, 456K bss , 78272K reserved, 0K cma-reserved, 0K highmem)
  …
  PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
  software IO TLB: mapped [mem 0x0bb78000-0x0fb78000] (64MB)

The initial analysis and the suggested fix was done by user 'sourcejedi'
at stackoverflow and explicitly marked as GPLv2 for inclusion in the
Linux kernel:

  https://unix.stackexchange.com/a/520525/50007

The new calculation, which does not suffer from that overflow, is the
same as for arch/mips now as suggested by Robin Murphy.

The fix was tested by fli4l users on round about two dozen different
systems, including both 32 and 64 bit archs, bare metal and virtualized
machines.

 [ bp: Massage commit message. ]

Fixes: 1b7e03ef7570 ("x86, NUMA: Enable emulation on 32bit too")
Reported-by: Alan Jenkins <alan.christopher.jenkins@gmail.com>
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Alexander Dahl <post@lespocky.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Link: https://unix.stackexchange.com/q/520065/50007
Link: https://web.nettworks.org/bugs/browse/FFL-2560
Link: https://lkml.kernel.org/r/20200526175749.20742-1-post@lespocky.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/include/asm/dma.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/include/asm/dma.h
+++ b/arch/x86/include/asm/dma.h
@@ -74,7 +74,7 @@
 #define MAX_DMA_PFN   ((16UL * 1024 * 1024) >> PAGE_SHIFT)
 
 /* 4GB broken PCI/AGP hardware bus master zone */
-#define MAX_DMA32_PFN ((4UL * 1024 * 1024 * 1024) >> PAGE_SHIFT)
+#define MAX_DMA32_PFN (1UL << (32 - PAGE_SHIFT))
 
 #ifdef CONFIG_X86_32
 /* The maximum address that we can perform a DMA transfer to on this platform */

[PATCH 4.19 74/95] copy_xstate_to_kernel(): dont leave parts of destination uninitialized

[Greg Kroah-Hartman]

From: Al Viro <viro@zeniv.linux.org.uk>

commit 9e4636545933131de15e1ecd06733538ae939b2f upstream.

copy the corresponding pieces of init_fpstate into the gaps instead.

Cc: stable@kernel.org
Tested-by: Alexander Potapenko <glider@google.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/fpu/xstate.c |   86 ++++++++++++++++++++++++-------------------
 1 file changed, 48 insertions(+), 38 deletions(-)

--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -964,18 +964,31 @@ static inline bool xfeatures_mxcsr_quirk
 	return true;
 }
 
-/*
- * This is similar to user_regset_copyout(), but will not add offset to
- * the source data pointer or increment pos, count, kbuf, and ubuf.
- */
-static inline void
-__copy_xstate_to_kernel(void *kbuf, const void *data,
-			unsigned int offset, unsigned int size, unsigned int size_total)
+static void fill_gap(unsigned to, void **kbuf, unsigned *pos, unsigned *count)
 {
-	if (offset < size_total) {
-		unsigned int copy = min(size, size_total - offset);
+	if (*pos < to) {
+		unsigned size = to - *pos;
+
+		if (size > *count)
+			size = *count;
+		memcpy(*kbuf, (void *)&init_fpstate.xsave + *pos, size);
+		*kbuf += size;
+		*pos += size;
+		*count -= size;
+	}
+}
 
-		memcpy(kbuf + offset, data, copy);
+static void copy_part(unsigned offset, unsigned size, void *from,
+			void **kbuf, unsigned *pos, unsigned *count)
+{
+	fill_gap(offset, kbuf, pos, count);
+	if (size > *count)
+		size = *count;
+	if (size) {
+		memcpy(*kbuf, from, size);
+		*kbuf += size;
+		*pos += size;
+		*count -= size;
 	}
 }
 
@@ -988,8 +1001,9 @@ __copy_xstate_to_kernel(void *kbuf, cons
  */
 int copy_xstate_to_kernel(void *kbuf, struct xregs_state *xsave, unsigned int offset_start, unsigned int size_total)
 {
-	unsigned int offset, size;
 	struct xstate_header header;
+	const unsigned off_mxcsr = offsetof(struct fxregs_state, mxcsr);
+	unsigned count = size_total;
 	int i;
 
 	/*
@@ -1005,46 +1019,42 @@ int copy_xstate_to_kernel(void *kbuf, st
 	header.xfeatures = xsave->header.xfeatures;
 	header.xfeatures &= ~XFEATURE_MASK_SUPERVISOR;
 
+	if (header.xfeatures & XFEATURE_MASK_FP)
+		copy_part(0, off_mxcsr,
+			  &xsave->i387, &kbuf, &offset_start, &count);
+	if (header.xfeatures & (XFEATURE_MASK_SSE | XFEATURE_MASK_YMM))
+		copy_part(off_mxcsr, MXCSR_AND_FLAGS_SIZE,
+			  &xsave->i387.mxcsr, &kbuf, &offset_start, &count);
+	if (header.xfeatures & XFEATURE_MASK_FP)
+		copy_part(offsetof(struct fxregs_state, st_space), 128,
+			  &xsave->i387.st_space, &kbuf, &offset_start, &count);
+	if (header.xfeatures & XFEATURE_MASK_SSE)
+		copy_part(xstate_offsets[XFEATURE_MASK_SSE], 256,
+			  &xsave->i387.xmm_space, &kbuf, &offset_start, &count);
+	/*
+	 * Fill xsave->i387.sw_reserved value for ptrace frame:
+	 */
+	copy_part(offsetof(struct fxregs_state, sw_reserved), 48,
+		  xstate_fx_sw_bytes, &kbuf, &offset_start, &count);
 	/*
 	 * Copy xregs_state->header:
 	 */
-	offset = offsetof(struct xregs_state, header);
-	size = sizeof(header);
-
-	__copy_xstate_to_kernel(kbuf, &header, offset, size, size_total);
+	copy_part(offsetof(struct xregs_state, header), sizeof(header),
+		  &header, &kbuf, &offset_start, &count);
 
-	for (i = 0; i < XFEATURE_MAX; i++) {
+	for (i = FIRST_EXTENDED_XFEATURE; i < XFEATURE_MAX; i++) {
 		/*
 		 * Copy only in-use xstates:
 		 */
 		if ((header.xfeatures >> i) & 1) {
 			void *src = __raw_xsave_addr(xsave, 1 << i);
 
-			offset = xstate_offsets[i];
-			size = xstate_sizes[i];
-
-			/* The next component has to fit fully into the output buffer: */
-			if (offset + size > size_total)
-				break;
-
-			__copy_xstate_to_kernel(kbuf, src, offset, size, size_total);
+			copy_part(xstate_offsets[i], xstate_sizes[i],
+				  src, &kbuf, &offset_start, &count);
 		}
 
 	}
-
-	if (xfeatures_mxcsr_quirk(header.xfeatures)) {
-		offset = offsetof(struct fxregs_state, mxcsr);
-		size = MXCSR_AND_FLAGS_SIZE;
-		__copy_xstate_to_kernel(kbuf, &xsave->i387.mxcsr, offset, size, size_total);
-	}
-
-	/*
-	 * Fill xsave->i387.sw_reserved value for ptrace frame:
-	 */
-	offset = offsetof(struct fxregs_state, sw_reserved);
-	size = sizeof(xstate_fx_sw_bytes);
-
-	__copy_xstate_to_kernel(kbuf, xstate_fx_sw_bytes, offset, size, size_total);
+	fill_gap(size_total, &kbuf, &offset_start, &count);
 
 	return 0;
 }

[PATCH 4.19 75/95] xfrm: allow to accept packets with ipv6 NEXTHDR_HOP in xfrm_input

[Greg Kroah-Hartman]

From: Xin Long <lucien.xin@gmail.com>

commit afcaf61be9d1dbdee5ec186d1dcc67b6b692180f upstream.

For beet mode, when it's ipv6 inner address with nexthdrs set,
the packet format might be:

    ----------------------------------------------------
    | outer  |     | dest |     |      |  ESP    | ESP |
    | IP hdr | ESP | opts.| TCP | Data | Trailer | ICV |
    ----------------------------------------------------

The nexthdr from ESP could be NEXTHDR_HOP(0), so it should
continue processing the packet when nexthdr returns 0 in
xfrm_input(). Otherwise, when ipv6 nexthdr is set, the
packet will be dropped.

I don't see any error cases that nexthdr may return 0. So
fix it by removing the check for nexthdr == 0.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/xfrm/xfrm_input.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -407,7 +407,7 @@ resume:
 		dev_put(skb->dev);
 
 		spin_lock(&x->lock);
-		if (nexthdr <= 0) {
+		if (nexthdr < 0) {
 			if (nexthdr == -EBADMSG) {
 				xfrm_audit_state_icvfail(x, skb,
 							 x->type->proto);

[PATCH 4.19 76/95] xfrm: call xfrm_output_gso when inner_protocol is set in xfrm_output

[Greg Kroah-Hartman]

From: Xin Long <lucien.xin@gmail.com>

commit a204aef9fd77dce1efd9066ca4e44eede99cd858 upstream.

An use-after-free crash can be triggered when sending big packets over
vxlan over esp with esp offload enabled:

  [] BUG: KASAN: use-after-free in ipv6_gso_pull_exthdrs.part.8+0x32c/0x4e0
  [] Call Trace:
  []  dump_stack+0x75/0xa0
  []  kasan_report+0x37/0x50
  []  ipv6_gso_pull_exthdrs.part.8+0x32c/0x4e0
  []  ipv6_gso_segment+0x2c8/0x13c0
  []  skb_mac_gso_segment+0x1cb/0x420
  []  skb_udp_tunnel_segment+0x6b5/0x1c90
  []  inet_gso_segment+0x440/0x1380
  []  skb_mac_gso_segment+0x1cb/0x420
  []  esp4_gso_segment+0xae8/0x1709 [esp4_offload]
  []  inet_gso_segment+0x440/0x1380
  []  skb_mac_gso_segment+0x1cb/0x420
  []  __skb_gso_segment+0x2d7/0x5f0
  []  validate_xmit_skb+0x527/0xb10
  []  __dev_queue_xmit+0x10f8/0x2320 <---
  []  ip_finish_output2+0xa2e/0x1b50
  []  ip_output+0x1a8/0x2f0
  []  xfrm_output_resume+0x110e/0x15f0
  []  __xfrm4_output+0xe1/0x1b0
  []  xfrm4_output+0xa0/0x200
  []  iptunnel_xmit+0x5a7/0x920
  []  vxlan_xmit_one+0x1658/0x37a0 [vxlan]
  []  vxlan_xmit+0x5e4/0x3ec8 [vxlan]
  []  dev_hard_start_xmit+0x125/0x540
  []  __dev_queue_xmit+0x17bd/0x2320  <---
  []  ip6_finish_output2+0xb20/0x1b80
  []  ip6_output+0x1b3/0x390
  []  ip6_xmit+0xb82/0x17e0
  []  inet6_csk_xmit+0x225/0x3d0
  []  __tcp_transmit_skb+0x1763/0x3520
  []  tcp_write_xmit+0xd64/0x5fe0
  []  __tcp_push_pending_frames+0x8c/0x320
  []  tcp_sendmsg_locked+0x2245/0x3500
  []  tcp_sendmsg+0x27/0x40

As on the tx path of vxlan over esp, skb->inner_network_header would be
set on vxlan_xmit() and xfrm4_tunnel_encap_add(), and the later one can
overwrite the former one. It causes skb_udp_tunnel_segment() to use a
wrong skb->inner_network_header, then the issue occurs.

This patch is to fix it by calling xfrm_output_gso() instead when the
inner_protocol is set, in which gso_segment of inner_protocol will be
done first.

While at it, also improve some code around.

Fixes: 7862b4058b9f ("esp: Add gso handlers for esp4 and esp6")
Reported-by: Xiumei Mu <xmu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/xfrm/xfrm_output.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -235,18 +235,20 @@ int xfrm_output(struct sock *sk, struct
 		xfrm_state_hold(x);
 
 		if (skb_is_gso(skb)) {
-			skb_shinfo(skb)->gso_type |= SKB_GSO_ESP;
+			if (skb->inner_protocol)
+				return xfrm_output_gso(net, sk, skb);
 
-			return xfrm_output2(net, sk, skb);
+			skb_shinfo(skb)->gso_type |= SKB_GSO_ESP;
+			goto out;
 		}
 
 		if (x->xso.dev && x->xso.dev->features & NETIF_F_HW_ESP_TX_CSUM)
 			goto out;
+	} else {
+		if (skb_is_gso(skb))
+			return xfrm_output_gso(net, sk, skb);
 	}
 
-	if (skb_is_gso(skb))
-		return xfrm_output_gso(net, sk, skb);
-
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
 		err = skb_checksum_help(skb);
 		if (err) {

[PATCH 4.19 77/95] xfrm interface: fix oops when deleting a x-netns interface

[Greg Kroah-Hartman]

From: Nicolas Dichtel <nicolas.dichtel@6wind.com>

commit c95c5f58b35ef995f66cb55547eee6093ab5fcb8 upstream.

Here is the steps to reproduce the problem:
ip netns add foo
ip netns add bar
ip -n foo link add xfrmi0 type xfrm dev lo if_id 42
ip -n foo link set xfrmi0 netns bar
ip netns del foo
ip netns del bar

Which results to:
[  186.686395] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6bd3: 0000 [#1] SMP PTI
[  186.687665] CPU: 7 PID: 232 Comm: kworker/u16:2 Not tainted 5.6.0+ #1
[  186.688430] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[  186.689420] Workqueue: netns cleanup_net
[  186.689903] RIP: 0010:xfrmi_dev_uninit+0x1b/0x4b [xfrm_interface]
[  186.690657] Code: 44 f6 ff ff 31 c0 5b 5d 41 5c 41 5d 41 5e c3 48 8d 8f c0 08 00 00 8b 05 ce 14 00 00 48 8b 97 d0 08 00 00 48 8b 92 c0 0e 00 00 <48> 8b 14 c2 48 8b 02 48 85 c0 74 19 48 39 c1 75 0c 48 8b 87 c0 08
[  186.692838] RSP: 0018:ffffc900003b7d68 EFLAGS: 00010286
[  186.693435] RAX: 000000000000000d RBX: ffff8881b0f31000 RCX: ffff8881b0f318c0
[  186.694334] RDX: 6b6b6b6b6b6b6b6b RSI: 0000000000000246 RDI: ffff8881b0f31000
[  186.695190] RBP: ffffc900003b7df0 R08: ffff888236c07740 R09: 0000000000000040
[  186.696024] R10: ffffffff81fce1b8 R11: 0000000000000002 R12: ffffc900003b7d80
[  186.696859] R13: ffff8881edcc6a40 R14: ffff8881a1b6e780 R15: ffffffff81ed47c8
[  186.697738] FS:  0000000000000000(0000) GS:ffff888237dc0000(0000) knlGS:0000000000000000
[  186.698705] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  186.699408] CR2: 00007f2129e93148 CR3: 0000000001e0a000 CR4: 00000000000006e0
[  186.700221] Call Trace:
[  186.700508]  rollback_registered_many+0x32b/0x3fd
[  186.701058]  ? __rtnl_unlock+0x20/0x3d
[  186.701494]  ? arch_local_irq_save+0x11/0x17
[  186.702012]  unregister_netdevice_many+0x12/0x55
[  186.702594]  default_device_exit_batch+0x12b/0x150
[  186.703160]  ? prepare_to_wait_exclusive+0x60/0x60
[  186.703719]  cleanup_net+0x17d/0x234
[  186.704138]  process_one_work+0x196/0x2e8
[  186.704652]  worker_thread+0x1a4/0x249
[  186.705087]  ? cancel_delayed_work+0x92/0x92
[  186.705620]  kthread+0x105/0x10f
[  186.706000]  ? __kthread_bind_mask+0x57/0x57
[  186.706501]  ret_from_fork+0x35/0x40
[  186.706978] Modules linked in: xfrm_interface nfsv3 nfs_acl auth_rpcgss nfsv4 nfs lockd grace fscache sunrpc button parport_pc parport serio_raw evdev pcspkr loop ext4 crc16 mbcache jbd2 crc32c_generic 8139too ide_cd_mod cdrom ide_gd_mod ata_generic ata_piix libata scsi_mod piix psmouse i2c_piix4 ide_core 8139cp i2c_core mii floppy
[  186.710423] ---[ end trace 463bba18105537e5 ]---

The problem is that x-netns xfrm interface are not removed when the link
netns is removed. This causes later this oops when thoses interfaces are
removed.

Let's add a handler to remove all interfaces related to a netns when this
netns is removed.

Fixes: f203b76d7809 ("xfrm: Add virtual xfrm interfaces")
Reported-by: Christophe Gouault <christophe.gouault@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/xfrm/xfrm_interface.c |   21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -780,7 +780,28 @@ static void __net_exit xfrmi_exit_net(st
 	rtnl_unlock();
 }
 
+static void __net_exit xfrmi_exit_batch_net(struct list_head *net_exit_list)
+{
+	struct net *net;
+	LIST_HEAD(list);
+
+	rtnl_lock();
+	list_for_each_entry(net, net_exit_list, exit_list) {
+		struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id);
+		struct xfrm_if __rcu **xip;
+		struct xfrm_if *xi;
+
+		for (xip = &xfrmn->xfrmi[0];
+		     (xi = rtnl_dereference(*xip)) != NULL;
+		     xip = &xi->next)
+			unregister_netdevice_queue(xi->dev, &list);
+	}
+	unregister_netdevice_many(&list);
+	rtnl_unlock();
+}
+
 static struct pernet_operations xfrmi_net_ops = {
+	.exit_batch = xfrmi_exit_batch_net,
 	.init = xfrmi_init_net,
 	.exit = xfrmi_exit_net,
 	.id   = &xfrmi_net_id,

[PATCH 4.19 78/95] xfrm: fix a warning in xfrm_policy_insert_list

[Greg Kroah-Hartman]

From: Xin Long <lucien.xin@gmail.com>

commit ed17b8d377eaf6b4a01d46942b4c647378a79bdd upstream.

This waring can be triggered simply by:

  # ip xfrm policy update src 192.168.1.1/24 dst 192.168.1.2/24 dir in \
    priority 1 mark 0 mask 0x10  #[1]
  # ip xfrm policy update src 192.168.1.1/24 dst 192.168.1.2/24 dir in \
    priority 2 mark 0 mask 0x1   #[2]
  # ip xfrm policy update src 192.168.1.1/24 dst 192.168.1.2/24 dir in \
    priority 2 mark 0 mask 0x10  #[3]

Then dmesg shows:

  [ ] WARNING: CPU: 1 PID: 7265 at net/xfrm/xfrm_policy.c:1548
  [ ] RIP: 0010:xfrm_policy_insert_list+0x2f2/0x1030
  [ ] Call Trace:
  [ ]  xfrm_policy_inexact_insert+0x85/0xe50
  [ ]  xfrm_policy_insert+0x4ba/0x680
  [ ]  xfrm_add_policy+0x246/0x4d0
  [ ]  xfrm_user_rcv_msg+0x331/0x5c0
  [ ]  netlink_rcv_skb+0x121/0x350
  [ ]  xfrm_netlink_rcv+0x66/0x80
  [ ]  netlink_unicast+0x439/0x630
  [ ]  netlink_sendmsg+0x714/0xbf0
  [ ]  sock_sendmsg+0xe2/0x110

The issue was introduced by Commit 7cb8a93968e3 ("xfrm: Allow inserting
policies with matching mark and different priorities"). After that, the
policies [1] and [2] would be able to be added with different priorities.

However, policy [3] will actually match both [1] and [2]. Policy [1]
was matched due to the 1st 'return true' in xfrm_policy_mark_match(),
and policy [2] was matched due to the 2nd 'return true' in there. It
caused WARN_ON() in xfrm_policy_insert_list().

This patch is to fix it by only (the same value and priority) as the
same policy in xfrm_policy_mark_match().

Thanks to Yuehaibing, we could make this fix better.

v1->v2:
  - check policy->mark.v == pol->mark.v only without mask.

Fixes: 7cb8a93968e3 ("xfrm: Allow inserting policies with matching mark and different priorities")
Reported-by: Xiumei Mu <xmu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/xfrm/xfrm_policy.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -730,12 +730,7 @@ static void xfrm_policy_requeue(struct x
 static bool xfrm_policy_mark_match(struct xfrm_policy *policy,
 				   struct xfrm_policy *pol)
 {
-	u32 mark = policy->mark.v & policy->mark.m;
-
-	if (policy->mark.v == pol->mark.v && policy->mark.m == pol->mark.m)
-		return true;
-
-	if ((mark & pol->mark.m) == pol->mark.v &&
+	if (policy->mark.v == pol->mark.v &&
 	    policy->priority == pol->priority)
 		return true;
 

[PATCH 4.19 79/95] xfrm: fix a NULL-ptr deref in xfrm_local_error

[Greg Kroah-Hartman]

From: Xin Long <lucien.xin@gmail.com>

commit f6a23d85d078c2ffde79c66ca81d0a1dde451649 upstream.

This patch is to fix a crash:

  [ ] kasan: GPF could be caused by NULL-ptr deref or user memory access
  [ ] general protection fault: 0000 [#1] SMP KASAN PTI
  [ ] RIP: 0010:ipv6_local_error+0xac/0x7a0
  [ ] Call Trace:
  [ ]  xfrm6_local_error+0x1eb/0x300
  [ ]  xfrm_local_error+0x95/0x130
  [ ]  __xfrm6_output+0x65f/0xb50
  [ ]  xfrm6_output+0x106/0x46f
  [ ]  udp_tunnel6_xmit_skb+0x618/0xbf0 [ip6_udp_tunnel]
  [ ]  vxlan_xmit_one+0xbc6/0x2c60 [vxlan]
  [ ]  vxlan_xmit+0x6a0/0x4276 [vxlan]
  [ ]  dev_hard_start_xmit+0x165/0x820
  [ ]  __dev_queue_xmit+0x1ff0/0x2b90
  [ ]  ip_finish_output2+0xd3e/0x1480
  [ ]  ip_do_fragment+0x182d/0x2210
  [ ]  ip_output+0x1d0/0x510
  [ ]  ip_send_skb+0x37/0xa0
  [ ]  raw_sendmsg+0x1b4c/0x2b80
  [ ]  sock_sendmsg+0xc0/0x110

This occurred when sending a v4 skb over vxlan6 over ipsec, in which case
skb->protocol == htons(ETH_P_IPV6) while skb->sk->sk_family == AF_INET in
xfrm_local_error(). Then it will go to xfrm6_local_error() where it tries
to get ipv6 info from a ipv4 sk.

This issue was actually fixed by Commit 628e341f319f ("xfrm: make local
error reporting more robust"), but brought back by Commit 844d48746e4b
("xfrm: choose protocol family by skb protocol").

So to fix it, we should call xfrm6_local_error() only when skb->protocol
is htons(ETH_P_IPV6) and skb->sk->sk_family is AF_INET6.

Fixes: 844d48746e4b ("xfrm: choose protocol family by skb protocol")
Reported-by: Xiumei Mu <xmu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/xfrm/xfrm_output.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -285,7 +285,8 @@ void xfrm_local_error(struct sk_buff *sk
 
 	if (skb->protocol == htons(ETH_P_IP))
 		proto = AF_INET;
-	else if (skb->protocol == htons(ETH_P_IPV6))
+	else if (skb->protocol == htons(ETH_P_IPV6) &&
+		 skb->sk->sk_family == AF_INET6)
 		proto = AF_INET6;
 	else
 		return;

[PATCH 4.19 80/95] xfrm: fix error in comment

[Greg Kroah-Hartman]

From: Antony Antony <antony@phenome.org>

commit 29e4276667e24ee6b91d9f91064d8fda9a210ea1 upstream.

s/xfrm_state_offload/xfrm_user_offload/

Fixes: d77e38e612a ("xfrm: Add an IPsec hardware offloading API")
Signed-off-by: Antony Antony <antony@phenome.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/uapi/linux/xfrm.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/uapi/linux/xfrm.h
+++ b/include/uapi/linux/xfrm.h
@@ -304,7 +304,7 @@ enum xfrm_attr_type_t {
 	XFRMA_PROTO,		/* __u8 */
 	XFRMA_ADDRESS_FILTER,	/* struct xfrm_address_filter */
 	XFRMA_PAD,
-	XFRMA_OFFLOAD_DEV,	/* struct xfrm_state_offload */
+	XFRMA_OFFLOAD_DEV,	/* struct xfrm_user_offload */
 	XFRMA_SET_MARK,		/* __u32 */
 	XFRMA_SET_MARK_MASK,	/* __u32 */
 	XFRMA_IF_ID,		/* __u32 */

[PATCH 4.19 81/95] vti4: eliminated some duplicate code.

[Greg Kroah-Hartman]

From: Jeremy Sowden <jeremy@azazel.net>

commit f981c57ffd2d7cf2dd4b6d6f8fcb3965df42f54c upstream.

The ipip tunnel introduced in commit dd9ee3444014 ("vti4: Fix a ipip
packet processing bug in 'IPCOMP' virtual tunnel") largely duplicated
the existing vti_input and vti_recv functions.  Refactored to
deduplicate the common code.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ipv4/ip_vti.c |   60 +++++++++++++++++++-----------------------------------
 1 file changed, 22 insertions(+), 38 deletions(-)

--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -50,7 +50,7 @@ static unsigned int vti_net_id __read_mo
 static int vti_tunnel_init(struct net_device *dev);
 
 static int vti_input(struct sk_buff *skb, int nexthdr, __be32 spi,
-		     int encap_type)
+		     int encap_type, bool update_skb_dev)
 {
 	struct ip_tunnel *tunnel;
 	const struct iphdr *iph = ip_hdr(skb);
@@ -65,6 +65,9 @@ static int vti_input(struct sk_buff *skb
 
 		XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4 = tunnel;
 
+		if (update_skb_dev)
+			skb->dev = tunnel->dev;
+
 		return xfrm_input(skb, nexthdr, spi, encap_type);
 	}
 
@@ -74,47 +77,28 @@ drop:
 	return 0;
 }
 
-static int vti_input_ipip(struct sk_buff *skb, int nexthdr, __be32 spi,
-		     int encap_type)
+static int vti_input_proto(struct sk_buff *skb, int nexthdr, __be32 spi,
+			   int encap_type)
 {
-	struct ip_tunnel *tunnel;
-	const struct iphdr *iph = ip_hdr(skb);
-	struct net *net = dev_net(skb->dev);
-	struct ip_tunnel_net *itn = net_generic(net, vti_net_id);
-
-	tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY,
-				  iph->saddr, iph->daddr, 0);
-	if (tunnel) {
-		if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
-			goto drop;
-
-		XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4 = tunnel;
-
-		skb->dev = tunnel->dev;
-
-		return xfrm_input(skb, nexthdr, spi, encap_type);
-	}
-
-	return -EINVAL;
-drop:
-	kfree_skb(skb);
-	return 0;
+	return vti_input(skb, nexthdr, spi, encap_type, false);
 }
 
-static int vti_rcv(struct sk_buff *skb)
+static int vti_rcv(struct sk_buff *skb, __be32 spi, bool update_skb_dev)
 {
 	XFRM_SPI_SKB_CB(skb)->family = AF_INET;
 	XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct iphdr, daddr);
 
-	return vti_input(skb, ip_hdr(skb)->protocol, 0, 0);
+	return vti_input(skb, ip_hdr(skb)->protocol, spi, 0, update_skb_dev);
 }
 
-static int vti_rcv_ipip(struct sk_buff *skb)
+static int vti_rcv_proto(struct sk_buff *skb)
 {
-	XFRM_SPI_SKB_CB(skb)->family = AF_INET;
-	XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct iphdr, daddr);
+	return vti_rcv(skb, 0, false);
+}
 
-	return vti_input_ipip(skb, ip_hdr(skb)->protocol, ip_hdr(skb)->saddr, 0);
+static int vti_rcv_tunnel(struct sk_buff *skb)
+{
+	return vti_rcv(skb, ip_hdr(skb)->saddr, true);
 }
 
 static int vti_rcv_cb(struct sk_buff *skb, int err)
@@ -478,31 +462,31 @@ static void __net_init vti_fb_tunnel_ini
 }
 
 static struct xfrm4_protocol vti_esp4_protocol __read_mostly = {
-	.handler	=	vti_rcv,
-	.input_handler	=	vti_input,
+	.handler	=	vti_rcv_proto,
+	.input_handler	=	vti_input_proto,
 	.cb_handler	=	vti_rcv_cb,
 	.err_handler	=	vti4_err,
 	.priority	=	100,
 };
 
 static struct xfrm4_protocol vti_ah4_protocol __read_mostly = {
-	.handler	=	vti_rcv,
-	.input_handler	=	vti_input,
+	.handler	=	vti_rcv_proto,
+	.input_handler	=	vti_input_proto,
 	.cb_handler	=	vti_rcv_cb,
 	.err_handler	=	vti4_err,
 	.priority	=	100,
 };
 
 static struct xfrm4_protocol vti_ipcomp4_protocol __read_mostly = {
-	.handler	=	vti_rcv,
-	.input_handler	=	vti_input,
+	.handler	=	vti_rcv_proto,
+	.input_handler	=	vti_input_proto,
 	.cb_handler	=	vti_rcv_cb,
 	.err_handler	=	vti4_err,
 	.priority	=	100,
 };
 
 static struct xfrm_tunnel ipip_handler __read_mostly = {
-	.handler	=	vti_rcv_ipip,
+	.handler	=	vti_rcv_tunnel,
 	.err_handler	=	vti4_err,
 	.priority	=	0,
 };

[PATCH 4.19 82/95] ip_vti: receive ipip packet by calling ip_tunnel_rcv

[Greg Kroah-Hartman]

From: Xin Long <lucien.xin@gmail.com>

commit 976eba8ab596bab94b9714cd46d38d5c6a2c660d upstream.

In Commit dd9ee3444014 ("vti4: Fix a ipip packet processing bug in
'IPCOMP' virtual tunnel"), it tries to receive IPIP packets in vti
by calling xfrm_input(). This case happens when a small packet or
frag sent by peer is too small to get compressed.

However, xfrm_input() will still get to the IPCOMP path where skb
sec_path is set, but never dropped while it should have been done
in vti_ipcomp4_protocol.cb_handler(vti_rcv_cb), as it's not an
ipcomp4 packet. This will cause that the packet can never pass
xfrm4_policy_check() in the upper protocol rcv functions.

So this patch is to call ip_tunnel_rcv() to process IPIP packets
instead.

Fixes: dd9ee3444014 ("vti4: Fix a ipip packet processing bug in 'IPCOMP' virtual tunnel")
Reported-by: Xiumei Mu <xmu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ipv4/ip_vti.c |   23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -98,7 +98,28 @@ static int vti_rcv_proto(struct sk_buff
 
 static int vti_rcv_tunnel(struct sk_buff *skb)
 {
-	return vti_rcv(skb, ip_hdr(skb)->saddr, true);
+	struct ip_tunnel_net *itn = net_generic(dev_net(skb->dev), vti_net_id);
+	const struct iphdr *iph = ip_hdr(skb);
+	struct ip_tunnel *tunnel;
+
+	tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY,
+				  iph->saddr, iph->daddr, 0);
+	if (tunnel) {
+		struct tnl_ptk_info tpi = {
+			.proto = htons(ETH_P_IP),
+		};
+
+		if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
+			goto drop;
+		if (iptunnel_pull_header(skb, 0, tpi.proto, false))
+			goto drop;
+		return ip_tunnel_rcv(tunnel, skb, &tpi, NULL, false);
+	}
+
+	return -EINVAL;
+drop:
+	kfree_skb(skb);
+	return 0;
 }
 
 static int vti_rcv_cb(struct sk_buff *skb, int err)

[PATCH 4.19 83/95] netfilter: nft_reject_bridge: enable reject with bridge vlan

[Greg Kroah-Hartman]

From: Michael Braun <michael-dev@fami-braun.de>

commit e9c284ec4b41c827f4369973d2792992849e4fa5 upstream.

Currently, using the bridge reject target with tagged packets
results in untagged packets being sent back.

Fix this by mirroring the vlan id as well.

Fixes: 85f5b3086a04 ("netfilter: bridge: add reject support")
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/bridge/netfilter/nft_reject_bridge.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -34,6 +34,12 @@ static void nft_reject_br_push_etherhdr(
 	ether_addr_copy(eth->h_dest, eth_hdr(oldskb)->h_source);
 	eth->h_proto = eth_hdr(oldskb)->h_proto;
 	skb_pull(nskb, ETH_HLEN);
+
+	if (skb_vlan_tag_present(oldskb)) {
+		u16 vid = skb_vlan_tag_get(oldskb);
+
+		__vlan_hwaccel_put_tag(nskb, oldskb->vlan_proto, vid);
+	}
 }
 
 static int nft_bridge_iphdr_validate(struct sk_buff *skb)

[PATCH 4.19 84/95] netfilter: ipset: Fix subcounter update skip

[Greg Kroah-Hartman]

From: Phil Sutter <phil@nwl.cc>

commit a164b95ad6055c50612795882f35e0efda1f1390 upstream.

If IPSET_FLAG_SKIP_SUBCOUNTER_UPDATE is set, user requested to not
update counters in sub sets. Therefore IPSET_FLAG_SKIP_COUNTER_UPDATE
must be set, not unset.

Fixes: 6e01781d1c80e ("netfilter: ipset: set match: add support to match the counters")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/netfilter/ipset/ip_set_list_set.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netfilter/ipset/ip_set_list_set.c
+++ b/net/netfilter/ipset/ip_set_list_set.c
@@ -63,7 +63,7 @@ list_set_ktest(struct ip_set *set, const
 	/* Don't lookup sub-counters at all */
 	opt->cmdflags &= ~IPSET_FLAG_MATCH_COUNTERS;
 	if (opt->cmdflags & IPSET_FLAG_SKIP_SUBCOUNTER_UPDATE)
-		opt->cmdflags &= ~IPSET_FLAG_SKIP_COUNTER_UPDATE;
+		opt->cmdflags |= IPSET_FLAG_SKIP_COUNTER_UPDATE;
 	list_for_each_entry_rcu(e, &map->members, list) {
 		ret = ip_set_test(e->id, skb, par, opt);
 		if (ret <= 0)

[PATCH 4.19 85/95] netfilter: nfnetlink_cthelper: unbreak userspace helper support

[Greg Kroah-Hartman]

From: Pablo Neira Ayuso <pablo@netfilter.org>

commit 703acd70f2496537457186211c2f03e792409e68 upstream.

Restore helper data size initialization and fix memcopy of the helper
data size.

Fixes: 157ffffeb5dc ("netfilter: nfnetlink_cthelper: reject too large userspace allocation requests")
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/netfilter/nfnetlink_cthelper.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/netfilter/nfnetlink_cthelper.c
+++ b/net/netfilter/nfnetlink_cthelper.c
@@ -106,7 +106,7 @@ nfnl_cthelper_from_nlattr(struct nlattr
 	if (help->helper->data_len == 0)
 		return -EINVAL;
 
-	nla_memcpy(help->data, nla_data(attr), sizeof(help->data));
+	nla_memcpy(help->data, attr, sizeof(help->data));
 	return 0;
 }
 
@@ -242,6 +242,7 @@ nfnl_cthelper_create(const struct nlattr
 		ret = -ENOMEM;
 		goto err2;
 	}
+	helper->data_len = size;
 
 	helper->flags |= NF_CT_HELPER_F_USERSPACE;
 	memcpy(&helper->tuple, tuple, sizeof(struct nf_conntrack_tuple));

[PATCH 4.19 86/95] netfilter: nf_conntrack_pptp: prevent buffer overflows in debug code

[Greg Kroah-Hartman]

From: Pablo Neira Ayuso <pablo@netfilter.org>

commit 4c559f15efcc43b996f4da528cd7f9483aaca36d upstream.

Dan Carpenter says: "Smatch complains that the value for "cmd" comes
from the network and can't be trusted."

Add pptp_msg_name() helper function that checks for the array boundary.

Fixes: f09943fefe6b ("[NETFILTER]: nf_conntrack/nf_nat: add PPTP helper port")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/netfilter/nf_conntrack_pptp.h |    2 
 net/ipv4/netfilter/nf_nat_pptp.c            |    7 ---
 net/netfilter/nf_conntrack_pptp.c           |   62 +++++++++++++++-------------
 3 files changed, 38 insertions(+), 33 deletions(-)

--- a/include/linux/netfilter/nf_conntrack_pptp.h
+++ b/include/linux/netfilter/nf_conntrack_pptp.h
@@ -5,7 +5,7 @@
 
 #include <linux/netfilter/nf_conntrack_common.h>
 
-extern const char *const pptp_msg_name[];
+extern const char *const pptp_msg_name(u_int16_t msg);
 
 /* state of the control session */
 enum pptp_ctrlsess_state {
--- a/net/ipv4/netfilter/nf_nat_pptp.c
+++ b/net/ipv4/netfilter/nf_nat_pptp.c
@@ -165,8 +165,7 @@ pptp_outbound_pkt(struct sk_buff *skb,
 		break;
 	default:
 		pr_debug("unknown outbound packet 0x%04x:%s\n", msg,
-			 msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] :
-					       pptp_msg_name[0]);
+			 pptp_msg_name(msg));
 		/* fall through */
 	case PPTP_SET_LINK_INFO:
 		/* only need to NAT in case PAC is behind NAT box */
@@ -267,9 +266,7 @@ pptp_inbound_pkt(struct sk_buff *skb,
 		pcid_off = offsetof(union pptp_ctrl_union, setlink.peersCallID);
 		break;
 	default:
-		pr_debug("unknown inbound packet %s\n",
-			 msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] :
-					       pptp_msg_name[0]);
+		pr_debug("unknown inbound packet %s\n", pptp_msg_name(msg));
 		/* fall through */
 	case PPTP_START_SESSION_REQUEST:
 	case PPTP_START_SESSION_REPLY:
--- a/net/netfilter/nf_conntrack_pptp.c
+++ b/net/netfilter/nf_conntrack_pptp.c
@@ -71,24 +71,32 @@ EXPORT_SYMBOL_GPL(nf_nat_pptp_hook_expec
 
 #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
 /* PptpControlMessageType names */
-const char *const pptp_msg_name[] = {
-	"UNKNOWN_MESSAGE",
-	"START_SESSION_REQUEST",
-	"START_SESSION_REPLY",
-	"STOP_SESSION_REQUEST",
-	"STOP_SESSION_REPLY",
-	"ECHO_REQUEST",
-	"ECHO_REPLY",
-	"OUT_CALL_REQUEST",
-	"OUT_CALL_REPLY",
-	"IN_CALL_REQUEST",
-	"IN_CALL_REPLY",
-	"IN_CALL_CONNECT",
-	"CALL_CLEAR_REQUEST",
-	"CALL_DISCONNECT_NOTIFY",
-	"WAN_ERROR_NOTIFY",
-	"SET_LINK_INFO"
+static const char *const pptp_msg_name_array[PPTP_MSG_MAX + 1] = {
+	[0]				= "UNKNOWN_MESSAGE",
+	[PPTP_START_SESSION_REQUEST]	= "START_SESSION_REQUEST",
+	[PPTP_START_SESSION_REPLY]	= "START_SESSION_REPLY",
+	[PPTP_STOP_SESSION_REQUEST]	= "STOP_SESSION_REQUEST",
+	[PPTP_STOP_SESSION_REPLY]	= "STOP_SESSION_REPLY",
+	[PPTP_ECHO_REQUEST]		= "ECHO_REQUEST",
+	[PPTP_ECHO_REPLY]		= "ECHO_REPLY",
+	[PPTP_OUT_CALL_REQUEST]		= "OUT_CALL_REQUEST",
+	[PPTP_OUT_CALL_REPLY]		= "OUT_CALL_REPLY",
+	[PPTP_IN_CALL_REQUEST]		= "IN_CALL_REQUEST",
+	[PPTP_IN_CALL_REPLY]		= "IN_CALL_REPLY",
+	[PPTP_IN_CALL_CONNECT]		= "IN_CALL_CONNECT",
+	[PPTP_CALL_CLEAR_REQUEST]	= "CALL_CLEAR_REQUEST",
+	[PPTP_CALL_DISCONNECT_NOTIFY]	= "CALL_DISCONNECT_NOTIFY",
+	[PPTP_WAN_ERROR_NOTIFY]		= "WAN_ERROR_NOTIFY",
+	[PPTP_SET_LINK_INFO]		= "SET_LINK_INFO"
 };
+
+const char *const pptp_msg_name(u_int16_t msg)
+{
+	if (msg > PPTP_MSG_MAX)
+		return pptp_msg_name_array[0];
+
+	return pptp_msg_name_array[msg];
+}
 EXPORT_SYMBOL(pptp_msg_name);
 #endif
 
@@ -275,7 +283,7 @@ pptp_inbound_pkt(struct sk_buff *skb, un
 	typeof(nf_nat_pptp_hook_inbound) nf_nat_pptp_inbound;
 
 	msg = ntohs(ctlh->messageType);
-	pr_debug("inbound control message %s\n", pptp_msg_name[msg]);
+	pr_debug("inbound control message %s\n", pptp_msg_name(msg));
 
 	switch (msg) {
 	case PPTP_START_SESSION_REPLY:
@@ -310,7 +318,7 @@ pptp_inbound_pkt(struct sk_buff *skb, un
 		pcid = pptpReq->ocack.peersCallID;
 		if (info->pns_call_id != pcid)
 			goto invalid;
-		pr_debug("%s, CID=%X, PCID=%X\n", pptp_msg_name[msg],
+		pr_debug("%s, CID=%X, PCID=%X\n", pptp_msg_name(msg),
 			 ntohs(cid), ntohs(pcid));
 
 		if (pptpReq->ocack.resultCode == PPTP_OUTCALL_CONNECT) {
@@ -327,7 +335,7 @@ pptp_inbound_pkt(struct sk_buff *skb, un
 			goto invalid;
 
 		cid = pptpReq->icreq.callID;
-		pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+		pr_debug("%s, CID=%X\n", pptp_msg_name(msg), ntohs(cid));
 		info->cstate = PPTP_CALL_IN_REQ;
 		info->pac_call_id = cid;
 		break;
@@ -346,7 +354,7 @@ pptp_inbound_pkt(struct sk_buff *skb, un
 		if (info->pns_call_id != pcid)
 			goto invalid;
 
-		pr_debug("%s, PCID=%X\n", pptp_msg_name[msg], ntohs(pcid));
+		pr_debug("%s, PCID=%X\n", pptp_msg_name(msg), ntohs(pcid));
 		info->cstate = PPTP_CALL_IN_CONF;
 
 		/* we expect a GRE connection from PAC to PNS */
@@ -356,7 +364,7 @@ pptp_inbound_pkt(struct sk_buff *skb, un
 	case PPTP_CALL_DISCONNECT_NOTIFY:
 		/* server confirms disconnect */
 		cid = pptpReq->disc.callID;
-		pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+		pr_debug("%s, CID=%X\n", pptp_msg_name(msg), ntohs(cid));
 		info->cstate = PPTP_CALL_NONE;
 
 		/* untrack this call id, unexpect GRE packets */
@@ -383,7 +391,7 @@ pptp_inbound_pkt(struct sk_buff *skb, un
 invalid:
 	pr_debug("invalid %s: type=%d cid=%u pcid=%u "
 		 "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
-		 msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
+		 pptp_msg_name(msg),
 		 msg, ntohs(cid), ntohs(pcid),  info->cstate, info->sstate,
 		 ntohs(info->pns_call_id), ntohs(info->pac_call_id));
 	return NF_ACCEPT;
@@ -403,7 +411,7 @@ pptp_outbound_pkt(struct sk_buff *skb, u
 	typeof(nf_nat_pptp_hook_outbound) nf_nat_pptp_outbound;
 
 	msg = ntohs(ctlh->messageType);
-	pr_debug("outbound control message %s\n", pptp_msg_name[msg]);
+	pr_debug("outbound control message %s\n", pptp_msg_name(msg));
 
 	switch (msg) {
 	case PPTP_START_SESSION_REQUEST:
@@ -425,7 +433,7 @@ pptp_outbound_pkt(struct sk_buff *skb, u
 		info->cstate = PPTP_CALL_OUT_REQ;
 		/* track PNS call id */
 		cid = pptpReq->ocreq.callID;
-		pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+		pr_debug("%s, CID=%X\n", pptp_msg_name(msg), ntohs(cid));
 		info->pns_call_id = cid;
 		break;
 
@@ -439,7 +447,7 @@ pptp_outbound_pkt(struct sk_buff *skb, u
 		pcid = pptpReq->icack.peersCallID;
 		if (info->pac_call_id != pcid)
 			goto invalid;
-		pr_debug("%s, CID=%X PCID=%X\n", pptp_msg_name[msg],
+		pr_debug("%s, CID=%X PCID=%X\n", pptp_msg_name(msg),
 			 ntohs(cid), ntohs(pcid));
 
 		if (pptpReq->icack.resultCode == PPTP_INCALL_ACCEPT) {
@@ -479,7 +487,7 @@ pptp_outbound_pkt(struct sk_buff *skb, u
 invalid:
 	pr_debug("invalid %s: type=%d cid=%u pcid=%u "
 		 "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
-		 msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
+		 pptp_msg_name(msg),
 		 msg, ntohs(cid), ntohs(pcid),  info->cstate, info->sstate,
 		 ntohs(info->pns_call_id), ntohs(info->pac_call_id));
 	return NF_ACCEPT;

[PATCH 4.19 87/95] esp6: get the right proto for transport mode in esp6_gso_encap

[Greg Kroah-Hartman]

From: Xin Long <lucien.xin@gmail.com>

commit 3c96ec56828922e3fe5477f75eb3fc02f98f98b5 upstream.

For transport mode, when ipv6 nexthdr is set, the packet format might
be like:

    ----------------------------------------------------
    |        | dest |     |     |      |  ESP    | ESP |
    | IP6 hdr| opts.| ESP | TCP | Data | Trailer | ICV |
    ----------------------------------------------------

What it wants to get for x-proto in esp6_gso_encap() is the proto that
will be set in ESP nexthdr. So it should skip all ipv6 nexthdrs and
get the real transport protocol. Othersize, the wrong proto number
will be set into ESP nexthdr.

This patch is to skip all ipv6 nexthdrs by calling ipv6_skip_exthdr()
in esp6_gso_encap().

Fixes: 7862b4058b9f ("esp: Add gso handlers for esp4 and esp6")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ipv6/esp6_offload.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -121,9 +121,16 @@ static void esp6_gso_encap(struct xfrm_s
 	struct ip_esp_hdr *esph;
 	struct ipv6hdr *iph = ipv6_hdr(skb);
 	struct xfrm_offload *xo = xfrm_offload(skb);
-	int proto = iph->nexthdr;
+	u8 proto = iph->nexthdr;
 
 	skb_push(skb, -skb_network_offset(skb));
+
+	if (x->outer_mode->encap == XFRM_MODE_TRANSPORT) {
+		__be16 frag;
+
+		ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &proto, &frag);
+	}
+
 	esph = ip_esp_hdr(skb);
 	*skb_mac_header(skb) = IPPROTO_ESP;
 

[PATCH 4.19 88/95] bnxt_en: Fix accumulation of bp->net_stats_prev.

[Greg Kroah-Hartman]

From: Michael Chan <michael.chan@broadcom.com>

commit b8056e8434b037fdab08158fea99ed7bc8ef3a74 upstream.

We have logic to maintain network counters across resets by storing
the counters in bp->net_stats_prev before reset.  But not all resets
will clear the counters.  Certain resets that don't need to change
the number of rings do not clear the counters.  The current logic
accumulates the counters before all resets, causing big jumps in
the counters after some resets, such as ethtool -G.

Fix it by only accumulating the counters during reset if the irq_re_init
parameter is set.  The parameter signifies that all rings and interrupts
will be reset and that means that the counters will also be reset.

Reported-by: Vijayendra Suman <vijayendra.suman@oracle.com>
Fixes: b8875ca356f1 ("bnxt_en: Save ring statistics before reset.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -7177,7 +7177,7 @@ static void __bnxt_close_nic(struct bnxt
 	bnxt_free_skbs(bp);
 
 	/* Save ring stats before shutdown */
-	if (bp->bnapi)
+	if (bp->bnapi && irq_re_init)
 		bnxt_get_ring_stats(bp, &bp->net_stats_prev);
 	if (irq_re_init) {
 		bnxt_free_irq(bp);

[PATCH 4.19 89/95] xsk: Add overflow check for u64 division, stored into u32

[Greg Kroah-Hartman]

From: Björn Töpel <bjorn.topel@intel.com>

commit b16a87d0aef7a6be766f6618976dc5ff2c689291 upstream.

The npgs member of struct xdp_umem is an u32 entity, and stores the
number of pages the UMEM consumes. The calculation of npgs

  npgs = size / PAGE_SIZE

can overflow.

To avoid overflow scenarios, the division is now first stored in a
u64, and the result is verified to fit into 32b.

An alternative would be storing the npgs as a u64, however, this
wastes memory and is an unrealisticly large packet area.

Fixes: c0c77d8fb787 ("xsk: add user memory registration support sockopt")
Reported-by: "Minh Bùi Quang" <minhquangbui99@gmail.com>
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Link: https://lore.kernel.org/bpf/CACtPs=GGvV-_Yj6rbpzTVnopgi5nhMoCcTkSkYrJHGQHJWFZMQ@mail.gmail.com/
Link: https://lore.kernel.org/bpf/20200525080400.13195-1-bjorn.topel@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/xdp/xdp_umem.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/net/xdp/xdp_umem.c
+++ b/net/xdp/xdp_umem.c
@@ -258,8 +258,8 @@ static int xdp_umem_account_pages(struct
 static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr)
 {
 	u32 chunk_size = mr->chunk_size, headroom = mr->headroom;
+	u64 npgs, addr = mr->addr, size = mr->len;
 	unsigned int chunks, chunks_per_page;
-	u64 addr = mr->addr, size = mr->len;
 	int err, i;
 
 	if (chunk_size < XDP_UMEM_MIN_CHUNK_SIZE || chunk_size > PAGE_SIZE) {
@@ -285,6 +285,10 @@ static int xdp_umem_reg(struct xdp_umem
 	if ((addr + size) < addr)
 		return -EINVAL;
 
+	npgs = div_u64(size, PAGE_SIZE);
+	if (npgs > U32_MAX)
+		return -EINVAL;
+
 	chunks = (unsigned int)div_u64(size, chunk_size);
 	if (chunks == 0)
 		return -EINVAL;
@@ -303,7 +307,7 @@ static int xdp_umem_reg(struct xdp_umem
 	umem->props.size = size;
 	umem->headroom = headroom;
 	umem->chunk_size_nohr = chunk_size - headroom;
-	umem->npgs = size / PAGE_SIZE;
+	umem->npgs = (u32)npgs;
 	umem->pgs = NULL;
 	umem->user = NULL;
 	INIT_LIST_HEAD(&umem->xsk_list);

[PATCH 4.19 90/95] qlcnic: fix missing release in qlcnic_83xx_interrupt_test.

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000273@umn.edu>

commit 15c973858903009e995b2037683de29dfe968621 upstream.

In function qlcnic_83xx_interrupt_test(), function
qlcnic_83xx_diag_alloc_res() is not handled by function
qlcnic_83xx_diag_free_res() after a call of the function
qlcnic_alloc_mbx_args() failed. Fix this issue by adding
a jump target "fail_mbx_args", and jump to this new target
when qlcnic_alloc_mbx_args() failed.

Fixes: b6b4316c8b2f ("qlcnic: Handle qlcnic_alloc_mbx_args() failure")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -3651,7 +3651,7 @@ int qlcnic_83xx_interrupt_test(struct ne
 	ahw->diag_cnt = 0;
 	ret = qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_INTRPT_TEST);
 	if (ret)
-		goto fail_diag_irq;
+		goto fail_mbx_args;
 
 	if (adapter->flags & QLCNIC_MSIX_ENABLED)
 		intrpt_id = ahw->intr_tbl[0].id;
@@ -3681,6 +3681,8 @@ int qlcnic_83xx_interrupt_test(struct ne
 
 done:
 	qlcnic_free_mbx_args(&cmd);
+
+fail_mbx_args:
 	qlcnic_83xx_diag_free_res(netdev, drv_sds_rings);
 
 fail_diag_irq:

[PATCH 4.19 91/95] crypto: chelsio/chtls: properly set tp->lsndtime

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

commit a4976a3ef844c510ae9120290b23e9f3f47d6bce upstream.

TCP tp->lsndtime unit/base is tcp_jiffies32, not tcp_time_stamp()

Fixes: 36bedb3f2e5b ("crypto: chtls - Inline TLS record Tx")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ayush Sawal <ayush.sawal@chelsio.com>
Cc: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/chelsio/chtls/chtls_io.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/crypto/chelsio/chtls/chtls_io.c
+++ b/drivers/crypto/chelsio/chtls/chtls_io.c
@@ -686,7 +686,7 @@ int chtls_push_frames(struct chtls_sock
 				make_tx_data_wr(sk, skb, immdlen, len,
 						credits_needed, completion);
 			tp->snd_nxt += len;
-			tp->lsndtime = tcp_time_stamp(tp);
+			tp->lsndtime = tcp_jiffies32;
 			if (completion)
 				ULP_SKB_CB(skb)->flags &= ~ULPCB_FLAG_NEED_HDR;
 		} else {

[PATCH 4.19 92/95] bonding: Fix reference count leak in bond_sysfs_slave_add.

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000273@umn.edu>

commit a068aab42258e25094bc2c159948d263ed7d7a77 upstream.

kobject_init_and_add() takes reference even when it fails.
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object. Previous
commit "b8eb718348b8" fixed a similar problem.

Fixes: 07699f9a7c8d ("bonding: add sysfs /slave dir for bond slave devices.")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/bonding/bond_sysfs_slave.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/bonding/bond_sysfs_slave.c
+++ b/drivers/net/bonding/bond_sysfs_slave.c
@@ -153,8 +153,10 @@ int bond_sysfs_slave_add(struct slave *s
 
 	err = kobject_init_and_add(&slave->kobj, &slave_ktype,
 				   &(slave->dev->dev.kobj), "bonding_slave");
-	if (err)
+	if (err) {
+		kobject_put(&slave->kobj);
 		return err;
+	}
 
 	for (a = slave_attrs; *a; ++a) {
 		err = sysfs_create_file(&slave->kobj, &((*a)->attr));

[PATCH 4.19 93/95] Revert "Input: i8042 - add ThinkPad S230u to i8042 nomux list"

[Greg Kroah-Hartman]

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

commit f4dec2d6160976b14e54be9c3950ce0f52385741 upstream.

This reverts commit 18931506465a762ffd3f4803d36a18d336a67da9. From Kevin
Locke:

"... nomux only appeared to fix the issue because the controller
continued working after warm reboots. After more thorough testing from
both warm and cold start, I now believe the entry should be added to
i8042_dmi_reset_table rather than i8042_dmi_nomux_table as i8042.reset=1
alone is sufficient to avoid the issue from both states while
i8042.nomux is not."

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/input/serio/i8042-x86ia64io.h |    7 -------
 1 file changed, 7 deletions(-)

--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -545,13 +545,6 @@ static const struct dmi_system_id __init
 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
 		},
 	},
-	{
-		/* Lenovo ThinkPad Twist S230u */
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "33474HU"),
-		},
-	},
 	{ }
 };
 

[PATCH 4.19 94/95] netfilter: nf_conntrack_pptp: fix compilation warning with W=1 build

[Greg Kroah-Hartman]

From: Pablo Neira Ayuso <pablo@netfilter.org>

commit 4946ea5c1237036155c3b3a24f049fd5f849f8f6 upstream.

>> include/linux/netfilter/nf_conntrack_pptp.h:13:20: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers]
extern const char *const pptp_msg_name(u_int16_t msg);
^~~~~~

Reported-by: kbuild test robot <lkp@intel.com>
Fixes: 4c559f15efcc ("netfilter: nf_conntrack_pptp: prevent buffer overflows in debug code")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/netfilter/nf_conntrack_pptp.h |    2 +-
 net/netfilter/nf_conntrack_pptp.c           |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/include/linux/netfilter/nf_conntrack_pptp.h
+++ b/include/linux/netfilter/nf_conntrack_pptp.h
@@ -5,7 +5,7 @@
 
 #include <linux/netfilter/nf_conntrack_common.h>
 
-extern const char *const pptp_msg_name(u_int16_t msg);
+const char *pptp_msg_name(u_int16_t msg);
 
 /* state of the control session */
 enum pptp_ctrlsess_state {
--- a/net/netfilter/nf_conntrack_pptp.c
+++ b/net/netfilter/nf_conntrack_pptp.c
@@ -90,7 +90,7 @@ static const char *const pptp_msg_name_a
 	[PPTP_SET_LINK_INFO]		= "SET_LINK_INFO"
 };
 
-const char *const pptp_msg_name(u_int16_t msg)
+const char *pptp_msg_name(u_int16_t msg)
 {
 	if (msg > PPTP_MSG_MAX)
 		return pptp_msg_name_array[0];

[PATCH 4.19 95/95] mm/vmalloc.c: dont dereference possible NULL pointer in __vunmap()

[Greg Kroah-Hartman]

From: Liviu Dudau <liviu@dudau.co.uk>

commit 6ade20327dbb808882888ed8ccded71e93067cf9 upstream.

find_vmap_area() can return a NULL pointer and we're going to
dereference it without checking it first.  Use the existing
find_vm_area() function which does exactly what we want and checks for
the NULL pointer.

Link: http://lkml.kernel.org/r/20181228171009.22269-1-liviu@dudau.co.uk
Fixes: f3c01d2f3ade ("mm: vmalloc: avoid racy handling of debugobjects in vunmap")
Signed-off-by: Liviu Dudau <liviu@dudau.co.uk>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Chintan Pandya <cpandya@codeaurora.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 mm/vmalloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1510,7 +1510,7 @@ static void __vunmap(const void *addr, i
 			addr))
 		return;
 
-	area = find_vmap_area((unsigned long)addr)->vm;
+	area = find_vm_area(addr);
 	if (unlikely(!area)) {
 		WARN(1, KERN_ERR "Trying to vfree() nonexistent vm area (%p)\n",
 				addr);

Re: [PATCH 4.19 28/95] gfs2: dont call quota_unhold if quotas are not locked

[Pavel Machek]

[-- Attachment #1: Type: text/plain, Size: 940 bytes --]

Hi!

> From: Bob Peterson <rpeterso@redhat.com>
> 
> [ Upstream commit c9cb9e381985bbbe8acd2695bbe6bd24bf06b81c ]
> 
> Before this patch, function gfs2_quota_unlock checked if quotas are
> turned off, and if so, it branched to label out, which called
> gfs2_quota_unhold. With the new system of gfs2_qa_get and put, we
> no longer want to call gfs2_quota_unhold or we won't balance our
> gets and puts.
> 
> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>

4.19 does not yet contain gfw2_qa_get; according to the changelog that
means that this patch is not suitable for 4.19 kernel.

Best regards,
                                                                Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Re: [PATCH 4.19 10/95] net sched: fix reporting the first-time use timestamp

[Pavel Machek]

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Hi!

On Mon 2020-06-01 19:53:10, Greg Kroah-Hartman wrote:
> From: Roman Mashak <mrv@mojatatu.com>
> 
> [ Upstream commit b15e62631c5f19fea9895f7632dae9c1b27fe0cd ]
> 
> When a new action is installed, firstuse field of 'tcf_t' is explicitly set
> to 0. Value of zero means "new action, not yet used"; as a packet hits the
> action, 'firstuse' is stamped with the current jiffies value.
> 
> tcf_tm_dump() should return 0 for firstuse if action has not yet been hit.
> 
> Fixes: 48d8ee1694dd ("net sched actions: aggregate dumping of actions timeinfo")

Jiffies start at small negative value (and are expected to overflow
periodically). This code will not work correctly in that case.

Best regards,
                                                                Pavel
								

> +++ b/include/net/act_api.h
> @@ -67,7 +67,8 @@ static inline void tcf_tm_dump(struct tc
>  {
>  	dtm->install = jiffies_to_clock_t(jiffies - stm->install);
>  	dtm->lastuse = jiffies_to_clock_t(jiffies - stm->lastuse);
> -	dtm->firstuse = jiffies_to_clock_t(jiffies - stm->firstuse);
> +	dtm->firstuse = stm->firstuse ?
> +		jiffies_to_clock_t(jiffies - stm->firstuse) : 0;
>  	dtm->expires = jiffies_to_clock_t(stm->expires);
>  }
>  
> 

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Re: [PATCH 4.19 72/95] mac80211: mesh: fix discovery timer re-arming issue / crash

[Pavel Machek]

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Hi!

> From: Linus Lüssing <ll@simonwunderlich.de>
> 
> commit e2d4a80f93fcfaf72e2e20daf6a28e39c3b90677 upstream.

> This patch fixes this issue by re-checking if mpath is about to be
> free'd and if so bails out of re-arming the timer.

> --- a/net/mac80211/mesh_hwmp.c
> +++ b/net/mac80211/mesh_hwmp.c
> @@ -1088,7 +1088,14 @@ void mesh_path_start_discovery(struct ie
>  	mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->vif.addr, ifmsh->sn,
>  			       target_flags, mpath->dst, mpath->sn, da, 0,
>  			       ttl, lifetime, 0, ifmsh->preq_id++, sdata);
> +
> +	spin_lock_bh(&mpath->state_lock);
> +	if (mpath->flags & MESH_PATH_DELETED) {
> +		spin_unlock_bh(&mpath->state_lock);
> +		goto enddiscovery;
> +	}
>  	mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
> +	spin_unlock_bh(&mpath->state_lock);
>  
>  enddiscovery:
>  	rcu_read_unlock();

This made brain freeze for a while. AFAICT it can be rewritten as:

 +     spin_lock_bh(&mpath->state_lock);
 +     if (!(mpath->flags & MESH_PATH_DELETED))
  	       mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
 +     spin_unlock_bh(&mpath->state_lock);

...?

Best regards,
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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RE: [PATCH 4.19 00/95] 4.19.126-rc1 review

[Chris Paterson]

Hi Greg,

> From: stable-owner@vger.kernel.org <stable-owner@vger.kernel.org> On
> Behalf Of Greg Kroah-Hartman
> Sent: 01 June 2020 18:53
> 
> This is the start of the stable review cycle for the 4.19.126 release.
> There are 95 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.

No build/boot issues seen for CIP configs for Linux 4.19.126-rc1 (47f49ba00628).

Build/test pipeline/logs: https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/pipelines/151700942
GitLab CI pipeline: https://gitlab.com/cip-project/cip-testing/linux-cip-pipelines/-/blob/master/trees/linux-4.19.y.yml
Relevant LAVA jobs: https://lava.ciplatform.org/scheduler/alljobs?length=25&search=47f49b#table

Kind regards, Chris

> 
> Responses should be made by Wed, 03 Jun 2020 17:38:19 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-
> 4.19.126-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> linux-4.19.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 
> -------------
> Pseudo-Shortlog of commits:
> 
> Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>     Linux 4.19.126-rc1
> 
> Liviu Dudau <liviu@dudau.co.uk>
>     mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap()
> 
> Pablo Neira Ayuso <pablo@netfilter.org>
>     netfilter: nf_conntrack_pptp: fix compilation warning with W=1 build
> 
> Dmitry Torokhov <dmitry.torokhov@gmail.com>
>     Revert "Input: i8042 - add ThinkPad S230u to i8042 nomux list"
> 
> Qiushi Wu <wu000273@umn.edu>
>     bonding: Fix reference count leak in bond_sysfs_slave_add.
> 
> Eric Dumazet <edumazet@google.com>
>     crypto: chelsio/chtls: properly set tp->lsndtime
> 
> Qiushi Wu <wu000273@umn.edu>
>     qlcnic: fix missing release in qlcnic_83xx_interrupt_test.
> 
> Björn Töpel <bjorn.topel@intel.com>
>     xsk: Add overflow check for u64 division, stored into u32
> 
> Michael Chan <michael.chan@broadcom.com>
>     bnxt_en: Fix accumulation of bp->net_stats_prev.
> 
> Xin Long <lucien.xin@gmail.com>
>     esp6: get the right proto for transport mode in esp6_gso_encap
> 
> Pablo Neira Ayuso <pablo@netfilter.org>
>     netfilter: nf_conntrack_pptp: prevent buffer overflows in debug code
> 
> Pablo Neira Ayuso <pablo@netfilter.org>
>     netfilter: nfnetlink_cthelper: unbreak userspace helper support
> 
> Phil Sutter <phil@nwl.cc>
>     netfilter: ipset: Fix subcounter update skip
> 
> Michael Braun <michael-dev@fami-braun.de>
>     netfilter: nft_reject_bridge: enable reject with bridge vlan
> 
> Xin Long <lucien.xin@gmail.com>
>     ip_vti: receive ipip packet by calling ip_tunnel_rcv
> 
> Jeremy Sowden <jeremy@azazel.net>
>     vti4: eliminated some duplicate code.
> 
> Antony Antony <antony@phenome.org>
>     xfrm: fix error in comment
> 
> Xin Long <lucien.xin@gmail.com>
>     xfrm: fix a NULL-ptr deref in xfrm_local_error
> 
> Xin Long <lucien.xin@gmail.com>
>     xfrm: fix a warning in xfrm_policy_insert_list
> 
> Nicolas Dichtel <nicolas.dichtel@6wind.com>
>     xfrm interface: fix oops when deleting a x-netns interface
> 
> Xin Long <lucien.xin@gmail.com>
>     xfrm: call xfrm_output_gso when inner_protocol is set in xfrm_output
> 
> Xin Long <lucien.xin@gmail.com>
>     xfrm: allow to accept packets with ipv6 NEXTHDR_HOP in xfrm_input
> 
> Al Viro <viro@zeniv.linux.org.uk>
>     copy_xstate_to_kernel(): don't leave parts of destination uninitialized
> 
> Alexander Dahl <post@lespocky.de>
>     x86/dma: Fix max PFN arithmetic overflow on 32 bit systems
> 
> Linus Lüssing <ll@simonwunderlich.de>
>     mac80211: mesh: fix discovery timer re-arming issue / crash
> 
> Jason Gunthorpe <jgg@ziepe.ca>
>     RDMA/core: Fix double destruction of uobject
> 
> Sarthak Garg <sartgarg@codeaurora.org>
>     mmc: core: Fix recursive locking issue in CQE recovery path
> 
> Helge Deller <deller@gmx.de>
>     parisc: Fix kernel panic in mem_init()
> 
> Qiushi Wu <wu000273@umn.edu>
>     iommu: Fix reference count leak in iommu_group_alloc.
> 
> Arnd Bergmann <arnd@arndb.de>
>     include/asm-generic/topology.h: guard cpumask_of_node() macro argument
> 
> Alexander Potapenko <glider@google.com>
>     fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info()
> 
> Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
>     mm: remove VM_BUG_ON(PageSlab()) from page_mapcount()
> 
> Valentine Fatiev <valentinef@mellanox.com>
>     IB/ipoib: Fix double free of skb in case of multicast traffic in CM mode
> 
> Jerry Lee <leisurelysw24@gmail.com>
>     libceph: ignore pool overlay and cache logic on redirects
> 
> Kailang Yang <kailang@realtek.com>
>     ALSA: hda/realtek - Add new codec supported for ALC287
> 
> Takashi Iwai <tiwai@suse.de>
>     ALSA: usb-audio: Quirks for Gigabyte TRX40 Aorus Master onboard audio
> 
> Eric W. Biederman <ebiederm@xmission.com>
>     exec: Always set cap_ambient in cap_bprm_set_creds
> 
> Chris Chiu <chiu@endlessm.com>
>     ALSA: usb-audio: mixer: volume quirk for ESS Technology Asus USB DAC
> 
> Takashi Iwai <tiwai@suse.de>
>     ALSA: hda/realtek - Add a model for Thinkpad T570 without DAC workaround
> 
> Changming Liu <liu.changm@northeastern.edu>
>     ALSA: hwdep: fix a left shifting 1 by 31 UB bug
> 
> Qiushi Wu <wu000273@umn.edu>
>     RDMA/pvrdma: Fix missing pci disable in pvrdma_pci_probe()
> 
> Peng Hao <richard.peng@oppo.com>
>     mmc: block: Fix use-after-free issue for rpmb
> 
> Hamish Martin <hamish.martin@alliedtelesis.co.nz>
>     ARM: dts: bcm: HR2: Fix PPI interrupt types
> 
> Vincent Stehlé <vincent.stehle@laposte.net>
>     ARM: dts: bcm2835-rpi-zero-w: Fix led polarity
> 
> Robert Beckett <bob.beckett@collabora.com>
>     ARM: dts/imx6q-bx50v3: Set display interface clock parents
> 
> Kaike Wan <kaike.wan@intel.com>
>     IB/qib: Call kobject_put() when kobject_init_and_add() fails
> 
> Takashi Iwai <tiwai@suse.de>
>     gpio: exar: Fix bad handling for ida_simple_get error path
> 
> Russell King <rmk+kernel@armlinux.org.uk>
>     ARM: uaccess: fix DACR mismatch with nested exceptions
> 
> Russell King <rmk+kernel@armlinux.org.uk>
>     ARM: uaccess: integrate uaccess_save and uaccess_restore
> 
> Russell King <rmk+kernel@armlinux.org.uk>
>     ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h
> 
> Stefan Agner <stefan@agner.ch>
>     ARM: 8843/1: use unified assembler in headers
> 
> Łukasz Stelmach <l.stelmach@samsung.com>
>     ARM: 8970/1: decompressor: increase tag size
> 
> Wei Yongjun <weiyongjun1@huawei.com>
>     Input: synaptics-rmi4 - fix error return code in rmi_driver_probe()
> 
> Evan Green <evgreen@chromium.org>
>     Input: synaptics-rmi4 - really fix attn_data use-after-free
> 
> Kevin Locke <kevin@kevinlocke.name>
>     Input: i8042 - add ThinkPad S230u to i8042 reset list
> 
> Christophe JAILLET <christophe.jaillet@wanadoo.fr>
>     Input: dlink-dir685-touchkeys - fix a typo in driver name
> 
> Łukasz Patron <priv.luk@gmail.com>
>     Input: xpad - add custom init packet for Xbox One S controllers
> 
> Brendan Shanks <bshanks@codeweavers.com>
>     Input: evdev - call input_flush_device() on release(), not flush()
> 
> Kevin Locke <kevin@kevinlocke.name>
>     Input: i8042 - add ThinkPad S230u to i8042 nomux list
> 
> James Hilliard <james.hilliard1@gmail.com>
>     Input: usbtouchscreen - add support for BonXeon TP
> 
> Matteo Croce <mcroce@redhat.com>
>     samples: bpf: Fix build error
> 
> Steve French <stfrench@microsoft.com>
>     cifs: Fix null pointer check in cifs_read
> 
> Kefeng Wang <wangkefeng.wang@huawei.com>
>     riscv: stacktrace: Fix undefined reference to `walk_stackframe'
> 
> Denis V. Lunev <den@openvz.org>
>     IB/i40iw: Remove bogus call to netdev_master_upper_dev_get()
> 
> Arnd Bergmann <arnd@arndb.de>
>     net: freescale: select CONFIG_FIXED_PHY where needed
> 
> Masahiro Yamada <masahiroy@kernel.org>
>     usb: gadget: legacy: fix redundant initialization warnings
> 
> Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>     usb: dwc3: pci: Enable extcon driver for Intel Merrifield
> 
> Lei Xue <carmark.dlut@gmail.com>
>     cachefiles: Fix race between read_waiter and read_copier involving op-
> >to_do
> 
> Bob Peterson <rpeterso@redhat.com>
>     gfs2: don't call quota_unhold if quotas are not locked
> 
> Bob Peterson <rpeterso@redhat.com>
>     gfs2: move privileged user check to gfs2_quota_lock_check
> 
> Chuhong Yuan <hslester96@gmail.com>
>     net: microchip: encx24j600: add missed kthread_stop
> 
> Andrew Oakley <andrew@adoakley.name>
>     ALSA: usb-audio: add mapping for ASRock TRX40 Creator
> 
> Stephen Warren <swarren@nvidia.com>
>     gpio: tegra: mask GPIO IRQs during IRQ shutdown
> 
> Johan Jonker <jbx6244@gmail.com>
>     ARM: dts: rockchip: fix pinctrl sub nodename for spi in rk322x.dtsi
> 
> Johan Jonker <jbx6244@gmail.com>
>     ARM: dts: rockchip: swap clock-names of gpu nodes
> 
> Johan Jonker <jbx6244@gmail.com>
>     arm64: dts: rockchip: swap interrupts interrupt-names rk3399 gpu node
> 
> Johan Jonker <jbx6244@gmail.com>
>     arm64: dts: rockchip: fix status for &gmac2phy in rk3328-evb.dts
> 
> Johan Jonker <jbx6244@gmail.com>
>     ARM: dts: rockchip: fix phy nodename for rk3228-evb
> 
> Jiri Pirko <jiri@mellanox.com>
>     mlxsw: spectrum: Fix use-after-free of split/unsplit/type_set in case reload
> fails
> 
> Qiushi Wu <wu000273@umn.edu>
>     net/mlx4_core: fix a memory leak bug.
> 
> Qiushi Wu <wu000273@umn.edu>
>     net: sun: fix missing release regions in cas_init_one().
> 
> Roi Dayan <roid@mellanox.com>
>     net/mlx5: Annotate mutex destroy for root ns
> 
> Moshe Shemesh <moshe@mellanox.com>
>     net/mlx5e: Update netdev txq on completions during closure
> 
> Jere Leppänen <jere.leppanen@nokia.com>
>     sctp: Start shutdown on association restart if in SHUTDOWN-SENT state and
> socket is closed
> 
> Neil Horman <nhorman@tuxdriver.com>
>     sctp: Don't add the shutdown timer if its already been added
> 
> Marc Payne <marc.payne@mdpsys.co.uk>
>     r8152: support additional Microsoft Surface Ethernet Adapter variant
> 
> Roman Mashak <mrv@mojatatu.com>
>     net sched: fix reporting the first-time use timestamp
> 
> Yuqi Jin <jinyuqi@huawei.com>
>     net: revert "net: get rid of an signed integer overflow in ip_idents_reserve()"
> 
> Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
>     net: qrtr: Fix passing invalid reference to qrtr_local_enqueue()
> 
> Moshe Shemesh <moshe@mellanox.com>
>     net/mlx5: Add command entry handling completion
> 
> Vadim Fedorenko <vfedorenko@novek.ru>
>     net: ipip: fix wrong address family in init error path
> 
> Martin KaFai Lau <kafai@fb.com>
>     net: inet_csk: Fix so_reuseport bind-address cache in tb->fast*
> 
> Boris Sukholitko <boris.sukholitko@broadcom.com>
>     __netif_receive_skb_core: pass skb by reference
> 
> DENG Qingfang <dqfext@gmail.com>
>     net: dsa: mt7530: fix roaming from DSA user ports
> 
> Vladimir Oltean <vladimir.oltean@nxp.com>
>     dpaa_eth: fix usage as DSA master, try 3
> 
> Eric Dumazet <edumazet@google.com>
>     ax25: fix setsockopt(SO_BINDTODEVICE)
> 
> 
> -------------
> 
> Diffstat:
> 
>  Makefile                                           |   4 +-
>  arch/arm/boot/compressed/vmlinux.lds.S             |   2 +-
>  arch/arm/boot/dts/bcm-hr2.dtsi                     |   6 +-
>  arch/arm/boot/dts/bcm2835-rpi-zero-w.dts           |   2 +-
>  arch/arm/boot/dts/imx6q-b450v3.dts                 |   7 --
>  arch/arm/boot/dts/imx6q-b650v3.dts                 |   7 --
>  arch/arm/boot/dts/imx6q-b850v3.dts                 |  11 --
>  arch/arm/boot/dts/imx6q-bx50v3.dtsi                |  15 +++
>  arch/arm/boot/dts/rk3036.dtsi                      |   2 +-
>  arch/arm/boot/dts/rk3228-evb.dts                   |   2 +-
>  arch/arm/boot/dts/rk322x.dtsi                      |   6 +-
>  arch/arm/boot/dts/rk3xxx.dtsi                      |   2 +-
>  arch/arm/include/asm/assembler.h                   |  83 +--------------
>  arch/arm/include/asm/uaccess-asm.h                 | 117 +++++++++++++++++++++
>  arch/arm/include/asm/vfpmacros.h                   |   8 +-
>  arch/arm/kernel/entry-armv.S                       |  11 +-
>  arch/arm/kernel/entry-header.S                     |   9 +-
>  arch/arm/lib/bitops.h                              |   8 +-
>  arch/arm64/boot/dts/rockchip/rk3328-evb.dts        |   2 +-
>  arch/arm64/boot/dts/rockchip/rk3399.dtsi           |   8 +-
>  arch/parisc/mm/init.c                              |   2 +-
>  arch/riscv/kernel/stacktrace.c                     |   2 +-
>  arch/x86/include/asm/dma.h                         |   2 +-
>  arch/x86/kernel/fpu/xstate.c                       |  86 ++++++++-------
>  drivers/crypto/chelsio/chtls/chtls_io.c            |   2 +-
>  drivers/gpio/gpio-exar.c                           |   7 +-
>  drivers/gpio/gpio-tegra.c                          |   1 +
>  drivers/infiniband/core/rdma_core.c                |  19 ++--
>  drivers/infiniband/hw/i40iw/i40iw_cm.c             |   8 --
>  drivers/infiniband/hw/qib/qib_sysfs.c              |   9 +-
>  drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c     |   2 +-
>  drivers/infiniband/ulp/ipoib/ipoib.h               |   4 +
>  drivers/infiniband/ulp/ipoib/ipoib_cm.c            |  15 +--
>  drivers/infiniband/ulp/ipoib/ipoib_ib.c            |   9 +-
>  drivers/infiniband/ulp/ipoib/ipoib_main.c          |  10 +-
>  drivers/input/evdev.c                              |  19 +---
>  drivers/input/joystick/xpad.c                      |  12 +++
>  drivers/input/keyboard/dlink-dir685-touchkeys.c    |   2 +-
>  drivers/input/rmi4/rmi_driver.c                    |   5 +-
>  drivers/input/serio/i8042-x86ia64io.h              |   7 ++
>  drivers/input/touchscreen/usbtouchscreen.c         |   1 +
>  drivers/iommu/iommu.c                              |   2 +-
>  drivers/mmc/core/block.c                           |   2 +-
>  drivers/mmc/core/queue.c                           |  13 +--
>  drivers/net/bonding/bond_sysfs_slave.c             |   4 +-
>  drivers/net/dsa/mt7530.c                           |   9 +-
>  drivers/net/dsa/mt7530.h                           |   1 +
>  drivers/net/ethernet/broadcom/bnxt/bnxt.c          |   2 +-
>  drivers/net/ethernet/freescale/Kconfig             |   2 +
>  drivers/net/ethernet/freescale/dpaa/Kconfig        |   1 +
>  drivers/net/ethernet/freescale/dpaa/dpaa_eth.c     |   2 +-
>  drivers/net/ethernet/mellanox/mlx4/fw.c            |   2 +-
>  drivers/net/ethernet/mellanox/mlx5/core/cmd.c      |  14 +++
>  drivers/net/ethernet/mellanox/mlx5/core/en_tx.c    |   6 +-
>  drivers/net/ethernet/mellanox/mlx5/core/fs_core.c  |   6 ++
>  drivers/net/ethernet/mellanox/mlxsw/spectrum.c     |  14 ++-
>  drivers/net/ethernet/mellanox/mlxsw/switchx2.c     |   8 ++
>  drivers/net/ethernet/microchip/encx24j600.c        |   5 +-
>  .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c    |   4 +-
>  drivers/net/ethernet/sun/cassini.c                 |   3 +-
>  drivers/net/usb/cdc_ether.c                        |  11 +-
>  drivers/net/usb/r8152.c                            |   1 +
>  drivers/usb/dwc3/dwc3-pci.c                        |   1 +
>  drivers/usb/gadget/legacy/inode.c                  |   3 +-
>  fs/binfmt_elf.c                                    |   2 +-
>  fs/cachefiles/rdwr.c                               |   2 +-
>  fs/cifs/file.c                                     |   2 +-
>  fs/gfs2/quota.c                                    |   6 +-
>  fs/gfs2/quota.h                                    |   3 +-
>  include/asm-generic/topology.h                     |   2 +-
>  include/linux/mlx5/driver.h                        |   1 +
>  include/linux/mm.h                                 |  15 ++-
>  include/linux/netfilter/nf_conntrack_pptp.h        |   2 +-
>  include/net/act_api.h                              |   3 +-
>  include/rdma/uverbs_std_types.h                    |   2 +-
>  include/uapi/linux/xfrm.h                          |   2 +-
>  mm/vmalloc.c                                       |   2 +-
>  net/ax25/af_ax25.c                                 |   6 +-
>  net/bridge/netfilter/nft_reject_bridge.c           |   6 ++
>  net/ceph/osd_client.c                              |   4 +-
>  net/core/dev.c                                     |  20 +++-
>  net/dsa/tag_mtk.c                                  |  15 +++
>  net/ipv4/inet_connection_sock.c                    |  43 ++++----
>  net/ipv4/ip_vti.c                                  |  75 +++++++------
>  net/ipv4/ipip.c                                    |   2 +-
>  net/ipv4/netfilter/nf_nat_pptp.c                   |   7 +-
>  net/ipv4/route.c                                   |  14 ++-
>  net/ipv6/esp6_offload.c                            |   9 +-
>  net/mac80211/mesh_hwmp.c                           |   7 ++
>  net/netfilter/ipset/ip_set_list_set.c              |   2 +-
>  net/netfilter/nf_conntrack_pptp.c                  |  62 ++++++-----
>  net/netfilter/nfnetlink_cthelper.c                 |   3 +-
>  net/qrtr/qrtr.c                                    |   2 +-
>  net/sctp/sm_sideeffect.c                           |  14 ++-
>  net/sctp/sm_statefuns.c                            |   9 +-
>  net/xdp/xdp_umem.c                                 |   8 +-
>  net/xfrm/xfrm_input.c                              |   2 +-
>  net/xfrm/xfrm_interface.c                          |  21 ++++
>  net/xfrm/xfrm_output.c                             |  15 +--
>  net/xfrm/xfrm_policy.c                             |   7 +-
>  samples/bpf/lwt_len_hist_user.c                    |   2 -
>  security/commoncap.c                               |   1 +
>  sound/core/hwdep.c                                 |   4 +-
>  sound/pci/hda/patch_realtek.c                      |  39 +++++--
>  sound/usb/mixer.c                                  |   8 ++
>  sound/usb/mixer_maps.c                             |  24 +++++
>  sound/usb/quirks-table.h                           |  26 +++++
>  107 files changed, 724 insertions(+), 429 deletions(-)
> 

Re: [PATCH 4.19 38/95] Input: i8042 - add ThinkPad S230u to i8042 nomux list

[Pavel Machek]

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Hi!

> Odds of a BIOS fix appear to be low: 1.57 was released over 6 years ago
> and although the [BIOS changelog] notes "Fixed an issue of UEFI
> touchpad/trackpoint/keyboard/touchscreen" in 1.58, it appears to be
> insufficient.
> 
> Adding 33474HU to the nomux list avoids the issue on my system.

This patch is known bad, and is reverted as a step 93/ in this
series. I believe it would be better to remove this and the revert
before -stable kernel is released.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

[-- Attachment #2: Digital signature --]
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Re: [PATCH 4.19 38/95] Input: i8042 - add ThinkPad S230u to i8042 nomux list

[Sasha Levin]

On Mon, Jun 01, 2020 at 11:38:52PM +0200, Pavel Machek wrote:
>Hi!
>
>> Odds of a BIOS fix appear to be low: 1.57 was released over 6 years ago
>> and although the [BIOS changelog] notes "Fixed an issue of UEFI
>> touchpad/trackpoint/keyboard/touchscreen" in 1.58, it appears to be
>> insufficient.
>>
>> Adding 33474HU to the nomux list avoids the issue on my system.
>
>This patch is known bad, and is reverted as a step 93/ in this
>series. I believe it would be better to remove this and the revert
>before -stable kernel is released.

Good point, I'll drop both. Thanks!

-- 
Thanks,
Sasha

Re: [PATCH 4.19 00/95] 4.19.126-rc1 review

[Naresh Kamboju]

On Mon, 1 Jun 2020 at 23:33, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 4.19.126 release.
> There are 95 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Wed, 03 Jun 2020 17:38:19 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
>         https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.126-rc1.gz
> or in the git tree and branch at:
>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
>
Results from Linaro’s test farm.
No regressions on arm64, arm, x86_64, and i386.

Summary
------------------------------------------------------------------------

kernel: 4.19.126-rc1
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git branch: linux-4.19.y
git commit: 47f49ba00628e7ce16eda75304e947f7ddb149d1
git describe: v4.19.125-96-g47f49ba00628
Test details: https://qa-reports.linaro.org/lkft/linux-stable-rc-4.19-oe/build/v4.19.125-96-g47f49ba00628


No regressions (compared to build v4.19.125)

No fixes (compared to build v4.19.125)

Ran 28272 total tests in the following environments and test suites.

Environments
--------------
- dragonboard-410c - arm64
- hi6220-hikey - arm64
- i386
- juno-r2 - arm64
- juno-r2-compat
- juno-r2-kasan
- nxp-ls2088
- qemu_arm
- qemu_arm64
- qemu_i386
- qemu_x86_64
- x15 - arm
- x86_64
- x86-kasan

Test Suites
-----------
* build
* install-android-platform-tools-r2800
* linux-log-parser
* ltp-nptl-tests
* ltp-pty-tests
* ltp-securebits-tests
* install-android-platform-tools-r2600
* kselftest
* kselftest/drivers
* kselftest/filesystems
* kselftest/net
* kselftest/networking
* ltp-dio-tests
* ltp-fcntl-locktests-tests
* ltp-filecaps-tests
* ltp-fs_bind-tests
* ltp-fs_perms_simple-tests
* ltp-fsx-tests
* ltp-io-tests
* ltp-cap_bounds-tests
* ltp-commands-tests
* ltp-containers-tests
* ltp-cpuhotplug-tests
* ltp-crypto-tests
* ltp-cve-tests
* ltp-fs-tests
* ltp-hugetlb-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-open-posix-tests
* ltp-sched-tests
* ltp-syscalls-tests
* network-basic-tests
* perf
* v4l2-compliance
* kvm-unit-tests
* libhugetlbfs
* kselftest-vsyscall-mode-native
* kselftest-vsyscall-mode-native/drivers
* kselftest-vsyscall-mode-native/filesystems
* kselftest-vsyscall-mode-native/net
* kselftest-vsyscall-mode-native/networking
* kselftest-vsyscall-mode-none
* kselftest-vsyscall-mode-none/drivers
* kselftest-vsyscall-mode-none/filesystems
* kselftest-vsyscall-mode-none/net
* kselftest-vsyscall-mode-none/networking

--
Linaro LKFT
https://lkft.linaro.org

Re: [PATCH 4.19 00/95] 4.19.126-rc1 review

[Greg Kroah-Hartman]

On Mon, Jun 01, 2020 at 09:17:25PM +0000, Chris Paterson wrote:
> Hi Greg,
> 
> > From: stable-owner@vger.kernel.org <stable-owner@vger.kernel.org> On
> > Behalf Of Greg Kroah-Hartman
> > Sent: 01 June 2020 18:53
> > 
> > This is the start of the stable review cycle for the 4.19.126 release.
> > There are 95 patches in this series, all will be posted as a response
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> 
> No build/boot issues seen for CIP configs for Linux 4.19.126-rc1 (47f49ba00628).
> 
> Build/test pipeline/logs: https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/pipelines/151700942
> GitLab CI pipeline: https://gitlab.com/cip-project/cip-testing/linux-cip-pipelines/-/blob/master/trees/linux-4.19.y.yml
> Relevant LAVA jobs: https://lava.ciplatform.org/scheduler/alljobs?length=25&search=47f49b#table

Thanks for testing and letting me know.

greg k-h