[PATCH 5.10 00/86] 5.10.113-rc1 review

[PATCH 5.10 00/86] 5.10.113-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 5.10.113 release.
There are 86 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 Thu, 28 Apr 2022 08:17:22 +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/v5.x/stable-review/patch-5.10.113-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-5.10.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 5.10.113-rc1

Marek Vasut <marex@denx.de>
    Revert "net: micrel: fix KS8851_MLL Kconfig"

Khazhismel Kumykov <khazhy@google.com>
    block/compat_ioctl: fix range check in BLKGETSIZE

Lee Jones <lee.jones@linaro.org>
    staging: ion: Prevent incorrect reference counting behavour

Tudor Ambarus <tudor.ambarus@microchip.com>
    spi: atmel-quadspi: Fix the buswidth adjustment between spi-mem and controller

Ye Bin <yebin10@huawei.com>
    jbd2: fix a potential race while discarding reserved buffers after an abort

Oliver Hartkopp <socketcan@hartkopp.net>
    can: isotp: stop timeout monitoring when no first frame was sent

Theodore Ts'o <tytso@mit.edu>
    ext4: force overhead calculation if the s_overhead_cluster makes no sense

Theodore Ts'o <tytso@mit.edu>
    ext4: fix overhead calculation to account for the reserved gdt blocks

wangjianjian (C) <wangjianjian3@huawei.com>
    ext4, doc: fix incorrect h_reserved size

Tadeusz Struk <tadeusz.struk@linaro.org>
    ext4: limit length to bitmap_maxbytes - blocksize in punch_hole

Ye Bin <yebin10@huawei.com>
    ext4: fix use-after-free in ext4_search_dir

Ye Bin <yebin10@huawei.com>
    ext4: fix symlink file size not match to file content

Darrick J. Wong <djwong@kernel.org>
    ext4: fix fallocate to use file_modified to update permissions consistently

Leo Yan <leo.yan@linaro.org>
    perf report: Set PERF_SAMPLE_DATA_SRC bit for Arm SPE event

Athira Rajeev <atrajeev@linux.vnet.ibm.com>
    powerpc/perf: Fix power9 event alternatives

Miaoqian Lin <linmq006@gmail.com>
    drm/vc4: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage

Alexey Kardashevskiy <aik@ozlabs.ru>
    KVM: PPC: Fix TCE handling for VFIO

Dave Stevenson <dave.stevenson@raspberrypi.com>
    drm/panel/raspberrypi-touchscreen: Initialise the bridge in prepare

Dave Stevenson <dave.stevenson@raspberrypi.com>
    drm/panel/raspberrypi-touchscreen: Avoid NULL deref if not initialised

Zhipeng Xie <xiezhipeng1@huawei.com>
    perf/core: Fix perf_mmap fail when CONFIG_PERF_USE_VMALLOC enabled

kuyo chang <kuyo.chang@mediatek.com>
    sched/pelt: Fix attach_entity_load_avg() corner case

Rob Herring <robh@kernel.org>
    arm_pmu: Validate single/group leader events

Sergey Matyukevich <sergey.matyukevich@synopsys.com>
    ARC: entry: fix syscall_trace_exit argument

Sasha Neftin <sasha.neftin@intel.com>
    e1000e: Fix possible overflow in LTR decoding

Xiaomeng Tong <xiam0nd.tong@gmail.com>
    ASoC: soc-dapm: fix two incorrect uses of list iterator

Mario Limonciello <mario.limonciello@amd.com>
    gpio: Request interrupts after IRQ is initialized

Paolo Valerio <pvalerio@redhat.com>
    openvswitch: fix OOB access in reserve_sfa_size()

Max Filippov <jcmvbkbc@gmail.com>
    xtensa: fix a7 clobbering in coprocessor context load/store

Guo Ren <guoren@linux.alibaba.com>
    xtensa: patch_text: Fixup last cpu should be master

Manuel Ullmann <labre@posteo.de>
    net: atlantic: invert deep par in pm functions, preventing null derefs

Xiaomeng Tong <xiam0nd.tong@gmail.com>
    dma: at_xdmac: fix a missing check on list iterator

Zheyu Ma <zheyuma97@gmail.com>
    ata: pata_marvell: Check the 'bmdma_addr' beforing reading

Alistair Popple <apopple@nvidia.com>
    mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()

Nico Pache <npache@redhat.com>
    oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup

Christophe Leroy <christophe.leroy@csgroup.eu>
    mm, hugetlb: allow for "high" userspace addresses

Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
    EDAC/synopsys: Read the error count from the correct register

Christoph Hellwig <hch@lst.de>
    nvme-pci: disable namespace identifiers for Qemu controllers

Christoph Hellwig <hch@lst.de>
    nvme: add a quirk to disable namespace identifiers

Mikulas Patocka <mpatocka@redhat.com>
    stat: fix inconsistency between struct stat and struct compat_stat

Mike Christie <michael.christie@oracle.com>
    scsi: qedi: Fix failed disconnect handling

Tomas Melin <tomas.melin@vaisala.com>
    net: macb: Restart tx only if queue pointer is lagging

Xiaoke Wang <xkernel.wang@foxmail.com>
    drm/msm/mdp5: check the return of kzalloc()

Lv Ruyi <lv.ruyi@zte.com.cn>
    dpaa_eth: Fix missing of_node_put in dpaa_get_ts_info()

Borislav Petkov <bp@alien8.de>
    brcmfmac: sdio: Fix undefined behavior due to shift overflowing the constant

Borislav Petkov <bp@suse.de>
    mt76: Fix undefined behavior due to shift overflowing the constant

Kai-Heng Feng <kai.heng.feng@canonical.com>
    net: atlantic: Avoid out-of-bounds indexing

David Howells <dhowells@redhat.com>
    cifs: Check the IOCB_DIRECT flag, not O_DIRECT

Hongbin Wang <wh_bin@126.com>
    vxlan: fix error return code in vxlan_fdb_append

Rob Herring <robh@kernel.org>
    arm64: dts: imx: Fix imx8*-var-som touchscreen property sizes

Borislav Petkov <bp@suse.de>
    ALSA: usb-audio: Fix undefined behavior due to shift overflowing the constant

Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
    platform/x86: samsung-laptop: Fix an unsigned comparison which can never be negative

Sameer Pujar <spujar@nvidia.com>
    reset: tegra-bpmp: Restore Handle errors in BPMP response

Kees Cook <keescook@chromium.org>
    ARM: vexpress/spc: Avoid negative array index when !SMP

Muchun Song <songmuchun@bytedance.com>
    arm64: mm: fix p?d_leaf()

Anshuman Khandual <anshuman.khandual@arm.com>
    arm64/mm: Remove [PUD|PMD]_TABLE_BIT from [pud|pmd]_bad()

Ido Schimmel <idosch@nvidia.com>
    selftests: mlxsw: vxlan_flooding: Prevent flooding of unwanted packets

Dave Jiang <dave.jiang@intel.com>
    dmaengine: idxd: add RO check for wq max_transfer_size write

Dave Jiang <dave.jiang@intel.com>
    dmaengine: idxd: add RO check for wq max_batch_size write

Kevin Hao <haokexin@gmail.com>
    net: stmmac: Use readl_poll_timeout_atomic() in atomic state

Eric Dumazet <edumazet@google.com>
    netlink: reset network and mac headers in netlink_dump()

Eric Dumazet <edumazet@google.com>
    ipv6: make ip6_rt_gc_expire an atomic_t

David Ahern <dsahern@kernel.org>
    l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu

Eric Dumazet <edumazet@google.com>
    net/sched: cls_u32: fix possible leak in u32_init_knode()

Peilin Ye <peilin.ye@bytedance.com>
    ip6_gre: Fix skb_under_panic in __gre6_xmit()

Peilin Ye <peilin.ye@bytedance.com>
    ip6_gre: Avoid updating tunnel->tun_hlen in __gre6_xmit()

Hangbin Liu <liuhangbin@gmail.com>
    net/packet: fix packet_sock xmit return value checking

Tony Lu <tonylu@linux.alibaba.com>
    net/smc: Fix sock leak when release after smc_shutdown()

David Howells <dhowells@redhat.com>
    rxrpc: Restore removed timer deletion

Sasha Neftin <sasha.neftin@intel.com>
    igc: Fix BUG: scheduling while atomic

Sasha Neftin <sasha.neftin@intel.com>
    igc: Fix infinite loop in release_swfw_sync

Sabrina Dubroca <sd@queasysnail.net>
    esp: limit skb_page_frag_refill use to a single page

Allen-KH Cheng <allen-kh.cheng@mediatek.com>
    spi: spi-mtk-nor: initialize spi controller after resume

zhangqilong <zhangqilong3@huawei.com>
    dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources

Miaoqian Lin <linmq006@gmail.com>
    dmaengine: imx-sdma: Fix error checking in sdma_event_remap

Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
    ASoC: codecs: wcd934x: do not switch off SIDO Buck when codec is in use

Miaoqian Lin <linmq006@gmail.com>
    ASoC: msm8916-wcd-digital: Check failure for devm_snd_soc_register_component

Mark Brown <broonie@kernel.org>
    ASoC: atmel: Remove system clock tree configuration for at91sam9g20ek

Jiazi Li <jqqlijiazi@gmail.com>
    dm: fix mempool NULL pointer race when completing IO

Tim Crawford <tcrawford@system76.com>
    ALSA: hda/realtek: Add quirk for Clevo NP70PNP

Takashi Iwai <tiwai@suse.de>
    ALSA: usb-audio: Clear MIDI port active flag after draining

Eric Dumazet <edumazet@google.com>
    net/sched: cls_u32: fix netns refcount changes in u32_change()

Bob Peterson <rpeterso@redhat.com>
    gfs2: assign rgrp glock before compute_bitstructs

Adrian Hunter <adrian.hunter@intel.com>
    perf tools: Fix segfault accessing sample_id xyarray

Daniel Bristot de Oliveira <bristot@kernel.org>
    tracing: Dump stacktrace trigger to the corresponding instance

Xiongwei Song <sxwjean@gmail.com>
    mm: page_alloc: fix building error on -Werror=array-compare

Kees Cook <keescook@chromium.org>
    etherdevice: Adjust ether_addr* prototypes to silence -Wstringop-overead


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

Diffstat:

 Documentation/filesystems/ext4/attributes.rst      |  2 +-
 Makefile                                           |  4 +-
 arch/arc/kernel/entry.S                            |  1 +
 arch/arm/mach-vexpress/spc.c                       |  2 +-
 arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi  |  8 +--
 arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi  |  8 +--
 arch/arm64/include/asm/pgtable.h                   |  9 ++-
 arch/powerpc/kvm/book3s_64_vio.c                   | 45 +++++++-------
 arch/powerpc/kvm/book3s_64_vio_hv.c                | 44 +++++++-------
 arch/powerpc/perf/power9-pmu.c                     |  8 +--
 arch/x86/include/asm/compat.h                      |  6 +-
 arch/xtensa/kernel/coprocessor.S                   |  4 +-
 arch/xtensa/kernel/jump_label.c                    |  2 +-
 block/ioctl.c                                      |  2 +-
 drivers/ata/pata_marvell.c                         |  2 +
 drivers/dma/at_xdmac.c                             | 12 ++--
 drivers/dma/idxd/sysfs.c                           |  6 ++
 drivers/dma/imx-sdma.c                             |  4 +-
 drivers/dma/mediatek/mtk-uart-apdma.c              |  9 ++-
 drivers/edac/synopsys_edac.c                       | 16 +++--
 drivers/gpio/gpiolib.c                             |  4 +-
 drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c         |  3 +
 .../gpu/drm/panel/panel-raspberrypi-touchscreen.c  | 13 +++-
 drivers/gpu/drm/vc4/vc4_dsi.c                      |  2 +-
 drivers/md/dm.c                                    | 17 +++---
 drivers/net/ethernet/aquantia/atlantic/aq_nic.c    |  8 +--
 .../net/ethernet/aquantia/atlantic/aq_pci_func.c   |  8 +--
 drivers/net/ethernet/aquantia/atlantic/aq_vec.c    | 24 ++++----
 drivers/net/ethernet/cadence/macb_main.c           |  8 +++
 drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c |  8 ++-
 drivers/net/ethernet/intel/e1000e/ich8lan.c        |  4 +-
 drivers/net/ethernet/intel/igc/igc_i225.c          | 11 +++-
 drivers/net/ethernet/intel/igc/igc_phy.c           |  4 +-
 drivers/net/ethernet/micrel/Kconfig                |  1 -
 .../net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c  |  4 +-
 drivers/net/vxlan.c                                |  4 +-
 .../wireless/broadcom/brcm80211/brcmfmac/sdio.c    |  2 +-
 drivers/net/wireless/mediatek/mt76/mt76x2/pci.c    |  2 +-
 drivers/nvme/host/core.c                           | 24 ++++++--
 drivers/nvme/host/nvme.h                           |  5 ++
 drivers/nvme/host/pci.c                            |  5 +-
 drivers/perf/arm_pmu.c                             | 10 ++--
 drivers/platform/x86/samsung-laptop.c              |  2 -
 drivers/reset/tegra/reset-bpmp.c                   |  9 ++-
 drivers/scsi/qedi/qedi_iscsi.c                     | 69 +++++++++++-----------
 drivers/spi/atmel-quadspi.c                        |  3 +
 drivers/spi/spi-mtk-nor.c                          | 12 +++-
 drivers/staging/android/ion/ion.c                  |  3 +
 fs/cifs/cifsfs.c                                   |  2 +-
 fs/ext4/ext4.h                                     |  6 +-
 fs/ext4/extents.c                                  | 32 +++++++---
 fs/ext4/inode.c                                    | 18 +++++-
 fs/ext4/namei.c                                    |  4 +-
 fs/ext4/page-io.c                                  |  4 +-
 fs/ext4/super.c                                    | 19 ++++--
 fs/gfs2/rgrp.c                                     |  9 +--
 fs/hugetlbfs/inode.c                               |  9 +--
 fs/jbd2/commit.c                                   |  4 +-
 fs/stat.c                                          | 19 +++---
 include/linux/etherdevice.h                        |  5 +-
 include/linux/sched.h                              |  1 +
 include/linux/sched/mm.h                           |  8 +++
 include/net/esp.h                                  |  2 -
 include/net/netns/ipv6.h                           |  4 +-
 kernel/events/core.c                               |  2 +-
 kernel/events/internal.h                           |  5 ++
 kernel/events/ring_buffer.c                        |  5 --
 kernel/sched/fair.c                                | 10 ++--
 kernel/trace/trace_events_trigger.c                |  9 ++-
 mm/mmap.c                                          |  8 ---
 mm/mmu_notifier.c                                  | 14 ++++-
 mm/oom_kill.c                                      | 54 ++++++++++++-----
 mm/page_alloc.c                                    |  2 +-
 net/can/isotp.c                                    | 10 +++-
 net/ipv4/esp4.c                                    |  5 +-
 net/ipv6/esp6.c                                    |  5 +-
 net/ipv6/ip6_gre.c                                 | 14 +++--
 net/ipv6/route.c                                   | 11 ++--
 net/l3mdev/l3mdev.c                                |  2 +-
 net/netlink/af_netlink.c                           |  7 +++
 net/openvswitch/flow_netlink.c                     |  2 +-
 net/packet/af_packet.c                             | 13 ++--
 net/rxrpc/net_ns.c                                 |  2 +
 net/sched/cls_u32.c                                | 24 ++++----
 net/smc/af_smc.c                                   |  4 +-
 sound/pci/hda/patch_realtek.c                      |  1 +
 sound/soc/atmel/sam9g20_wm8731.c                   | 61 -------------------
 sound/soc/codecs/msm8916-wcd-digital.c             |  9 ++-
 sound/soc/codecs/wcd934x.c                         | 26 +-------
 sound/soc/soc-dapm.c                               |  6 +-
 sound/usb/midi.c                                   |  1 +
 sound/usb/usbaudio.h                               |  2 +-
 tools/lib/perf/evlist.c                            |  3 +-
 tools/perf/builtin-report.c                        | 14 +++++
 .../selftests/drivers/net/mlxsw/vxlan_flooding.sh  | 17 ++++++
 95 files changed, 562 insertions(+), 395 deletions(-)

[PATCH 5.10 01/86] etherdevice: Adjust ether_addr* prototypes to silence -Wstringop-overead

[Greg Kroah-Hartman]

From: Kees Cook <keescook@chromium.org>

commit 2618a0dae09ef37728dab89ff60418cbe25ae6bd upstream.

With GCC 12, -Wstringop-overread was warning about an implicit cast from
char[6] to char[8]. However, the extra 2 bytes are always thrown away,
alignment doesn't matter, and the risk of hitting the edge of unallocated
memory has been accepted, so this prototype can just be converted to a
regular char *. Silences:

net/core/dev.c: In function ‘bpf_prog_run_generic_xdp’: net/core/dev.c:4618:21: warning: ‘ether_addr_equal_64bits’ reading 8 bytes from a region of size 6 [-Wstringop-overread]
 4618 |         orig_host = ether_addr_equal_64bits(eth->h_dest, > skb->dev->dev_addr);
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/core/dev.c:4618:21: note: referencing argument 1 of type ‘const u8[8]’ {aka ‘const unsigned char[8]’}
net/core/dev.c:4618:21: note: referencing argument 2 of type ‘const u8[8]’ {aka ‘const unsigned char[8]’}
In file included from net/core/dev.c:91: include/linux/etherdevice.h:375:20: note: in a call to function ‘ether_addr_equal_64bits’
  375 | static inline bool ether_addr_equal_64bits(const u8 addr1[6+2],
      |                    ^~~~~~~~~~~~~~~~~~~~~~~

Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/netdev/20220212090811.uuzk6d76agw2vv73@pengutronix.de
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/etherdevice.h |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -127,7 +127,7 @@ static inline bool is_multicast_ether_ad
 #endif
 }
 
-static inline bool is_multicast_ether_addr_64bits(const u8 addr[6+2])
+static inline bool is_multicast_ether_addr_64bits(const u8 *addr)
 {
 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
 #ifdef __BIG_ENDIAN
@@ -352,8 +352,7 @@ static inline bool ether_addr_equal(cons
  * Please note that alignment of addr1 & addr2 are only guaranteed to be 16 bits.
  */
 
-static inline bool ether_addr_equal_64bits(const u8 addr1[6+2],
-					   const u8 addr2[6+2])
+static inline bool ether_addr_equal_64bits(const u8 *addr1, const u8 *addr2)
 {
 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
 	u64 fold = (*(const u64 *)addr1) ^ (*(const u64 *)addr2);

[PATCH 5.10 02/86] mm: page_alloc: fix building error on -Werror=array-compare

[Greg Kroah-Hartman]

From: Xiongwei Song <sxwjean@gmail.com>

commit ca831f29f8f25c97182e726429b38c0802200c8f upstream.

Arthur Marsh reported we would hit the error below when building kernel
with gcc-12:

  CC      mm/page_alloc.o
  mm/page_alloc.c: In function `mem_init_print_info':
  mm/page_alloc.c:8173:27: error: comparison between two arrays [-Werror=array-compare]
   8173 |                 if (start <= pos && pos < end && size > adj) \
        |

In C++20, the comparision between arrays should be warned.

Link: https://lkml.kernel.org/r/20211125130928.32465-1-sxwjean@me.com
Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
Reported-by: Arthur Marsh <arthur.marsh@internode.on.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/page_alloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7678,7 +7678,7 @@ void __init mem_init_print_info(const ch
 	 */
 #define adj_init_size(start, end, size, pos, adj) \
 	do { \
-		if (start <= pos && pos < end && size > adj) \
+		if (&start[0] <= &pos[0] && &pos[0] < &end[0] && size > adj) \
 			size -= adj; \
 	} while (0)
 

[PATCH 5.10 03/86] tracing: Dump stacktrace trigger to the corresponding instance

[Greg Kroah-Hartman]

From: Daniel Bristot de Oliveira <bristot@kernel.org>

commit ce33c845b030c9cf768370c951bc699470b09fa7 upstream.

The stacktrace event trigger is not dumping the stacktrace to the instance
where it was enabled, but to the global "instance."

Use the private_data, pointing to the trigger file, to figure out the
corresponding trace instance, and use it in the trigger action, like
snapshot_trigger does.

Link: https://lkml.kernel.org/r/afbb0b4f18ba92c276865bc97204d438473f4ebc.1645396236.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Fixes: ae63b31e4d0e2 ("tracing: Separate out trace events from global variables")
Reviewed-by: Tom Zanussi <zanussi@kernel.org>
Tested-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace_events_trigger.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/kernel/trace/trace_events_trigger.c
+++ b/kernel/trace/trace_events_trigger.c
@@ -1219,7 +1219,14 @@ static void
 stacktrace_trigger(struct event_trigger_data *data, void *rec,
 		   struct ring_buffer_event *event)
 {
-	trace_dump_stack(STACK_SKIP);
+	struct trace_event_file *file = data->private_data;
+	unsigned long flags;
+
+	if (file) {
+		local_save_flags(flags);
+		__trace_stack(file->tr, flags, STACK_SKIP, preempt_count());
+	} else
+		trace_dump_stack(STACK_SKIP);
 }
 
 static void

[PATCH 5.10 04/86] perf tools: Fix segfault accessing sample_id xyarray

[Greg Kroah-Hartman]

From: Adrian Hunter <adrian.hunter@intel.com>

commit a668cc07f990d2ed19424d5c1a529521a9d1cee1 upstream.

perf_evsel::sample_id is an xyarray which can cause a segfault when
accessed beyond its size. e.g.

  # perf record -e intel_pt// -C 1 sleep 1
  Segmentation fault (core dumped)
  #

That is happening because a dummy event is opened to capture text poke
events accross all CPUs, however the mmap logic is allocating according
to the number of user_requested_cpus.

In general, perf sometimes uses the evsel cpus to open events, and
sometimes the evlist user_requested_cpus. However, it is not necessary
to determine which case is which because the opened event file
descriptors are also in an xyarray, the size of whch can be used
to correctly allocate the size of the sample_id xyarray, because there
is one ID per file descriptor.

Note, in the affected code path, perf_evsel fd array is subsequently
used to get the file descriptor for the mmap, so it makes sense for the
xyarrays to be the same size there.

Fixes: d1a177595b3a824c ("libperf: Adopt perf_evlist__mmap()/munmap() from tools/perf")
Fixes: 246eba8e9041c477 ("perf tools: Add support for PERF_RECORD_TEXT_POKE")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: stable@vger.kernel.org # 5.5+
Link: https://lore.kernel.org/r/20220413114232.26914-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 tools/lib/perf/evlist.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/tools/lib/perf/evlist.c
+++ b/tools/lib/perf/evlist.c
@@ -571,7 +571,6 @@ int perf_evlist__mmap_ops(struct perf_ev
 {
 	struct perf_evsel *evsel;
 	const struct perf_cpu_map *cpus = evlist->cpus;
-	const struct perf_thread_map *threads = evlist->threads;
 
 	if (!ops || !ops->get || !ops->mmap)
 		return -EINVAL;
@@ -583,7 +582,7 @@ int perf_evlist__mmap_ops(struct perf_ev
 	perf_evlist__for_each_entry(evlist, evsel) {
 		if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
 		    evsel->sample_id == NULL &&
-		    perf_evsel__alloc_id(evsel, perf_cpu_map__nr(cpus), threads->nr) < 0)
+		    perf_evsel__alloc_id(evsel, evsel->fd->max_x, evsel->fd->max_y) < 0)
 			return -ENOMEM;
 	}
 

[PATCH 5.10 05/86] gfs2: assign rgrp glock before compute_bitstructs

[Greg Kroah-Hartman]

From: Bob Peterson <rpeterso@redhat.com>

commit 428f651cb80b227af47fc302e4931791f2fb4741 upstream.

Before this patch, function read_rindex_entry called compute_bitstructs
before it allocated a glock for the rgrp. But if compute_bitstructs found
a problem with the rgrp, it called gfs2_consist_rgrpd, and that called
gfs2_dump_glock for rgd->rd_gl which had not yet been assigned.

read_rindex_entry
   compute_bitstructs
      gfs2_consist_rgrpd
         gfs2_dump_glock <---------rgd->rd_gl was not set.

This patch changes read_rindex_entry so it assigns an rgrp glock before
calling compute_bitstructs so gfs2_dump_glock does not reference an
unassigned pointer. If an error is discovered, the glock must also be
put, so a new goto and label were added.

Reported-by: syzbot+c6fd14145e2f62ca0784@syzkaller.appspotmail.com
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/gfs2/rgrp.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -906,15 +906,15 @@ static int read_rindex_entry(struct gfs2
 	rgd->rd_bitbytes = be32_to_cpu(buf.ri_bitbytes);
 	spin_lock_init(&rgd->rd_rsspin);
 
-	error = compute_bitstructs(rgd);
-	if (error)
-		goto fail;
-
 	error = gfs2_glock_get(sdp, rgd->rd_addr,
 			       &gfs2_rgrp_glops, CREATE, &rgd->rd_gl);
 	if (error)
 		goto fail;
 
+	error = compute_bitstructs(rgd);
+	if (error)
+		goto fail_glock;
+
 	rgd->rd_rgl = (struct gfs2_rgrp_lvb *)rgd->rd_gl->gl_lksb.sb_lvbptr;
 	rgd->rd_flags &= ~(GFS2_RDF_UPTODATE | GFS2_RDF_PREFERRED);
 	if (rgd->rd_data > sdp->sd_max_rg_data)
@@ -928,6 +928,7 @@ static int read_rindex_entry(struct gfs2
 	}
 
 	error = 0; /* someone else read in the rgrp; free it and ignore it */
+fail_glock:
 	gfs2_glock_put(rgd->rd_gl);
 
 fail:

[PATCH 5.10 06/86] net/sched: cls_u32: fix netns refcount changes in u32_change()

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

commit 3db09e762dc79584a69c10d74a6b98f89a9979f8 upstream.

We are now able to detect extra put_net() at the moment
they happen, instead of much later in correct code paths.

u32_init_knode() / tcf_exts_init() populates the ->exts.net
pointer, but as mentioned in tcf_exts_init(),
the refcount on netns has not been elevated yet.

The refcount is taken only once tcf_exts_get_net()
is called.

So the two u32_destroy_key() calls from u32_change()
are attempting to release an invalid reference on the netns.

syzbot report:

refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 21708 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Modules linked in:
CPU: 0 PID: 21708 Comm: syz-executor.5 Not tainted 5.18.0-rc2-next-20220412-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Code: 1d 14 b6 b2 09 31 ff 89 de e8 6d e9 89 fd 84 db 75 e0 e8 84 e5 89 fd 48 c7 c7 40 aa 26 8a c6 05 f4 b5 b2 09 01 e8 e5 81 2e 05 <0f> 0b eb c4 e8 68 e5 89 fd 0f b6 1d e3 b5 b2 09 31 ff 89 de e8 38
RSP: 0018:ffffc900051af1b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff8160a0c8 RDI: fffff52000a35e28
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81604a9e R11: 0000000000000000 R12: 1ffff92000a35e3b
R13: 00000000ffffffef R14: ffff8880211a0194 R15: ffff8880577d0a00
FS:  00007f25d183e700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19c859c028 CR3: 0000000051009000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 ref_tracker_free+0x535/0x6b0 lib/ref_tracker.c:118
 netns_tracker_free include/net/net_namespace.h:327 [inline]
 put_net_track include/net/net_namespace.h:341 [inline]
 tcf_exts_put_net include/net/pkt_cls.h:255 [inline]
 u32_destroy_key.isra.0+0xa7/0x2b0 net/sched/cls_u32.c:394
 u32_change+0xe01/0x3140 net/sched/cls_u32.c:909
 tc_new_tfilter+0x98d/0x2200 net/sched/cls_api.c:2148
 rtnetlink_rcv_msg+0x80d/0xb80 net/core/rtnetlink.c:6016
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2495
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:725
 ____sys_sendmsg+0x6e2/0x800 net/socket.c:2413
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2467
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2496
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f25d0689049
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f25d183e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f25d079c030 RCX: 00007f25d0689049
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000005
RBP: 00007f25d06e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd0b752e3f R14: 00007f25d183e300 R15: 0000000000022000
 </TASK>

Fixes: 35c55fc156d8 ("cls_u32: use tcf_exts_get_net() before call_rcu()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sched/cls_u32.c |   16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -386,14 +386,19 @@ static int u32_init(struct tcf_proto *tp
 	return 0;
 }
 
-static int u32_destroy_key(struct tc_u_knode *n, bool free_pf)
+static void __u32_destroy_key(struct tc_u_knode *n)
 {
 	struct tc_u_hnode *ht = rtnl_dereference(n->ht_down);
 
 	tcf_exts_destroy(&n->exts);
-	tcf_exts_put_net(&n->exts);
 	if (ht && --ht->refcnt == 0)
 		kfree(ht);
+	kfree(n);
+}
+
+static void u32_destroy_key(struct tc_u_knode *n, bool free_pf)
+{
+	tcf_exts_put_net(&n->exts);
 #ifdef CONFIG_CLS_U32_PERF
 	if (free_pf)
 		free_percpu(n->pf);
@@ -402,8 +407,7 @@ static int u32_destroy_key(struct tc_u_k
 	if (free_pf)
 		free_percpu(n->pcpu_success);
 #endif
-	kfree(n);
-	return 0;
+	__u32_destroy_key(n);
 }
 
 /* u32_delete_key_rcu should be called when free'ing a copied
@@ -898,13 +902,13 @@ static int u32_change(struct net *net, s
 				    tca[TCA_RATE], ovr, extack);
 
 		if (err) {
-			u32_destroy_key(new, false);
+			__u32_destroy_key(new);
 			return err;
 		}
 
 		err = u32_replace_hw_knode(tp, new, flags, extack);
 		if (err) {
-			u32_destroy_key(new, false);
+			__u32_destroy_key(new);
 			return err;
 		}
 

[PATCH 5.10 07/86] ALSA: usb-audio: Clear MIDI port active flag after draining

[Greg Kroah-Hartman]

From: Takashi Iwai <tiwai@suse.de>

commit 0665886ad1392e6b5bae85d7a6ccbed48dca1522 upstream.

When a rawmidi output stream is closed, it calls the drain at first,
then does trigger-off only when the drain returns -ERESTARTSYS as a
fallback.  It implies that each driver should turn off the stream
properly after the drain.  Meanwhile, USB-audio MIDI interface didn't
change the port->active flag after the drain.  This may leave the
output work picking up the port that is closed right now, which
eventually leads to a use-after-free for the already released rawmidi
object.

This patch fixes the bug by properly clearing the port->active flag
after the output drain.

Reported-by: syzbot+70e777a39907d6d5fd0a@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/00000000000011555605dceaff03@google.com
Link: https://lore.kernel.org/r/20220420130247.22062-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/usb/midi.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -1210,6 +1210,7 @@ static void snd_usbmidi_output_drain(str
 		} while (drain_urbs && timeout);
 		finish_wait(&ep->drain_wait, &wait);
 	}
+	port->active = 0;
 	spin_unlock_irq(&ep->buffer_lock);
 }
 

[PATCH 5.10 08/86] ALSA: hda/realtek: Add quirk for Clevo NP70PNP

[Greg Kroah-Hartman]

From: Tim Crawford <tcrawford@system76.com>

commit 86222af07abf1f5f07a5873cc399c29ab8a9b8b8 upstream.

Fixes headset detection on Clevo NP70PNP.

Signed-off-by: Tim Crawford <tcrawford@system76.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220421170412.3697-1-tcrawford@system76.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -8897,6 +8897,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1558, 0x8562, "Clevo NH[5|7][0-9]RZ[Q]", ALC269_FIXUP_DMIC),
 	SND_PCI_QUIRK(0x1558, 0x8668, "Clevo NP50B[BE]", ALC293_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1558, 0x866d, "Clevo NP5[05]PN[HJK]", ALC256_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
+	SND_PCI_QUIRK(0x1558, 0x867c, "Clevo NP7[01]PNP", ALC256_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1558, 0x867d, "Clevo NP7[01]PN[HJK]", ALC256_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1558, 0x8680, "Clevo NJ50LU", ALC293_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1558, 0x8686, "Clevo NH50[CZ]U", ALC256_FIXUP_MIC_NO_PRESENCE_AND_RESUME),

[PATCH 5.10 09/86] dm: fix mempool NULL pointer race when completing IO

[Greg Kroah-Hartman]

From: Jiazi Li <jqqlijiazi@gmail.com>

commit d208b89401e073de986dc891037c5a668f5d5d95 upstream.

dm_io_dec_pending() calls end_io_acct() first and will then dec md
in-flight pending count. But if a task is swapping DM table at same
time this can result in a crash due to mempool->elements being NULL:

task1                             task2
do_resume
 ->do_suspend
  ->dm_wait_for_completion
                                  bio_endio
				   ->clone_endio
				    ->dm_io_dec_pending
				     ->end_io_acct
				      ->wakeup task1
 ->dm_swap_table
  ->__bind
   ->__bind_mempools
    ->bioset_exit
     ->mempool_exit
                                     ->free_io

[ 67.330330] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000000
......
[ 67.330494] pstate: 80400085 (Nzcv daIf +PAN -UAO)
[ 67.330510] pc : mempool_free+0x70/0xa0
[ 67.330515] lr : mempool_free+0x4c/0xa0
[ 67.330520] sp : ffffff8008013b20
[ 67.330524] x29: ffffff8008013b20 x28: 0000000000000004
[ 67.330530] x27: ffffffa8c2ff40a0 x26: 00000000ffff1cc8
[ 67.330535] x25: 0000000000000000 x24: ffffffdada34c800
[ 67.330541] x23: 0000000000000000 x22: ffffffdada34c800
[ 67.330547] x21: 00000000ffff1cc8 x20: ffffffd9a1304d80
[ 67.330552] x19: ffffffdada34c970 x18: 000000b312625d9c
[ 67.330558] x17: 00000000002dcfbf x16: 00000000000006dd
[ 67.330563] x15: 000000000093b41e x14: 0000000000000010
[ 67.330569] x13: 0000000000007f7a x12: 0000000034155555
[ 67.330574] x11: 0000000000000001 x10: 0000000000000001
[ 67.330579] x9 : 0000000000000000 x8 : 0000000000000000
[ 67.330585] x7 : 0000000000000000 x6 : ffffff80148b5c1a
[ 67.330590] x5 : ffffff8008013ae0 x4 : 0000000000000001
[ 67.330596] x3 : ffffff80080139c8 x2 : ffffff801083bab8
[ 67.330601] x1 : 0000000000000000 x0 : ffffffdada34c970
[ 67.330609] Call trace:
[ 67.330616] mempool_free+0x70/0xa0
[ 67.330627] bio_put+0xf8/0x110
[ 67.330638] dec_pending+0x13c/0x230
[ 67.330644] clone_endio+0x90/0x180
[ 67.330649] bio_endio+0x198/0x1b8
[ 67.330655] dec_pending+0x190/0x230
[ 67.330660] clone_endio+0x90/0x180
[ 67.330665] bio_endio+0x198/0x1b8
[ 67.330673] blk_update_request+0x214/0x428
[ 67.330683] scsi_end_request+0x2c/0x300
[ 67.330688] scsi_io_completion+0xa0/0x710
[ 67.330695] scsi_finish_command+0xd8/0x110
[ 67.330700] scsi_softirq_done+0x114/0x148
[ 67.330708] blk_done_softirq+0x74/0xd0
[ 67.330716] __do_softirq+0x18c/0x374
[ 67.330724] irq_exit+0xb4/0xb8
[ 67.330732] __handle_domain_irq+0x84/0xc0
[ 67.330737] gic_handle_irq+0x148/0x1b0
[ 67.330744] el1_irq+0xe8/0x190
[ 67.330753] lpm_cpuidle_enter+0x4f8/0x538
[ 67.330759] cpuidle_enter_state+0x1fc/0x398
[ 67.330764] cpuidle_enter+0x18/0x20
[ 67.330772] do_idle+0x1b4/0x290
[ 67.330778] cpu_startup_entry+0x20/0x28
[ 67.330786] secondary_start_kernel+0x160/0x170

Fix this by:
1) Establishing pointers to 'struct dm_io' members in
dm_io_dec_pending() so that they may be passed into end_io_acct()
_after_ free_io() is called.
2) Moving end_io_acct() after free_io().

Cc: stable@vger.kernel.org
Signed-off-by: Jiazi Li <lijiazi@xiaomi.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Akilesh Kailash <akailash@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/dm.c |   17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -607,18 +607,17 @@ static void start_io_acct(struct dm_io *
 				    false, 0, &io->stats_aux);
 }
 
-static void end_io_acct(struct dm_io *io)
+static void end_io_acct(struct mapped_device *md, struct bio *bio,
+			unsigned long start_time, struct dm_stats_aux *stats_aux)
 {
-	struct mapped_device *md = io->md;
-	struct bio *bio = io->orig_bio;
-	unsigned long duration = jiffies - io->start_time;
+	unsigned long duration = jiffies - start_time;
 
-	bio_end_io_acct(bio, io->start_time);
+	bio_end_io_acct(bio, start_time);
 
 	if (unlikely(dm_stats_used(&md->stats)))
 		dm_stats_account_io(&md->stats, bio_data_dir(bio),
 				    bio->bi_iter.bi_sector, bio_sectors(bio),
-				    true, duration, &io->stats_aux);
+				    true, duration, stats_aux);
 
 	/* nudge anyone waiting on suspend queue */
 	if (unlikely(wq_has_sleeper(&md->wait)))
@@ -903,6 +902,8 @@ static void dec_pending(struct dm_io *io
 	blk_status_t io_error;
 	struct bio *bio;
 	struct mapped_device *md = io->md;
+	unsigned long start_time = 0;
+	struct dm_stats_aux stats_aux;
 
 	/* Push-back supersedes any I/O errors */
 	if (unlikely(error)) {
@@ -929,8 +930,10 @@ static void dec_pending(struct dm_io *io
 
 		io_error = io->status;
 		bio = io->orig_bio;
-		end_io_acct(io);
+		start_time = io->start_time;
+		stats_aux = io->stats_aux;
 		free_io(md, io);
+		end_io_acct(md, bio, start_time, &stats_aux);
 
 		if (io_error == BLK_STS_DM_REQUEUE)
 			return;

[PATCH 5.10 10/86] ASoC: atmel: Remove system clock tree configuration for at91sam9g20ek

[Greg Kroah-Hartman]

From: Mark Brown <broonie@kernel.org>

[ Upstream commit c775cbf62ed4911e4f0f23880f01815753123690 ]

The MCLK of the WM8731 on the AT91SAM9G20-EK board is connected to the
PCK0 output of the SoC, intended in the reference software to be supplied
using PLLB and programmed to 12MHz. As originally written for use with a
board file the audio driver was responsible for configuring the entire tree
but in the conversion to the common clock framework the registration of
the named pck0 and pllb clocks was removed so the driver has failed to
instantiate ever since.

Since the WM8731 driver has had support for managing a MCLK provided via
the common clock framework for some time we can simply drop all the clock
management code from the machine driver other than configuration of the
sysclk rate, the CODEC driver still respects that configuration from the
machine driver.

Fixes: ff78a189b0ae55f ("ARM: at91: remove old at91-specific clock driver")
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220325154241.1600757-2-broonie@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/atmel/sam9g20_wm8731.c | 61 --------------------------------
 1 file changed, 61 deletions(-)

diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c
index 8a55d59a6c2a..d243de5f23dc 100644
--- a/sound/soc/atmel/sam9g20_wm8731.c
+++ b/sound/soc/atmel/sam9g20_wm8731.c
@@ -46,35 +46,6 @@
  */
 #undef ENABLE_MIC_INPUT
 
-static struct clk *mclk;
-
-static int at91sam9g20ek_set_bias_level(struct snd_soc_card *card,
-					struct snd_soc_dapm_context *dapm,
-					enum snd_soc_bias_level level)
-{
-	static int mclk_on;
-	int ret = 0;
-
-	switch (level) {
-	case SND_SOC_BIAS_ON:
-	case SND_SOC_BIAS_PREPARE:
-		if (!mclk_on)
-			ret = clk_enable(mclk);
-		if (ret == 0)
-			mclk_on = 1;
-		break;
-
-	case SND_SOC_BIAS_OFF:
-	case SND_SOC_BIAS_STANDBY:
-		if (mclk_on)
-			clk_disable(mclk);
-		mclk_on = 0;
-		break;
-	}
-
-	return ret;
-}
-
 static const struct snd_soc_dapm_widget at91sam9g20ek_dapm_widgets[] = {
 	SND_SOC_DAPM_MIC("Int Mic", NULL),
 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
@@ -135,7 +106,6 @@ static struct snd_soc_card snd_soc_at91sam9g20ek = {
 	.owner = THIS_MODULE,
 	.dai_link = &at91sam9g20ek_dai,
 	.num_links = 1,
-	.set_bias_level = at91sam9g20ek_set_bias_level,
 
 	.dapm_widgets = at91sam9g20ek_dapm_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(at91sam9g20ek_dapm_widgets),
@@ -148,7 +118,6 @@ static int at91sam9g20ek_audio_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	struct device_node *codec_np, *cpu_np;
-	struct clk *pllb;
 	struct snd_soc_card *card = &snd_soc_at91sam9g20ek;
 	int ret;
 
@@ -162,31 +131,6 @@ static int at91sam9g20ek_audio_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	/*
-	 * Codec MCLK is supplied by PCK0 - set it up.
-	 */
-	mclk = clk_get(NULL, "pck0");
-	if (IS_ERR(mclk)) {
-		dev_err(&pdev->dev, "Failed to get MCLK\n");
-		ret = PTR_ERR(mclk);
-		goto err;
-	}
-
-	pllb = clk_get(NULL, "pllb");
-	if (IS_ERR(pllb)) {
-		dev_err(&pdev->dev, "Failed to get PLLB\n");
-		ret = PTR_ERR(pllb);
-		goto err_mclk;
-	}
-	ret = clk_set_parent(mclk, pllb);
-	clk_put(pllb);
-	if (ret != 0) {
-		dev_err(&pdev->dev, "Failed to set MCLK parent\n");
-		goto err_mclk;
-	}
-
-	clk_set_rate(mclk, MCLK_RATE);
-
 	card->dev = &pdev->dev;
 
 	/* Parse device node info */
@@ -230,9 +174,6 @@ static int at91sam9g20ek_audio_probe(struct platform_device *pdev)
 
 	return ret;
 
-err_mclk:
-	clk_put(mclk);
-	mclk = NULL;
 err:
 	atmel_ssc_put_audio(0);
 	return ret;
@@ -242,8 +183,6 @@ static int at91sam9g20ek_audio_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = platform_get_drvdata(pdev);
 
-	clk_disable(mclk);
-	mclk = NULL;
 	snd_soc_unregister_card(card);
 	atmel_ssc_put_audio(0);
 
-- 
2.35.1

[PATCH 5.10 11/86] ASoC: msm8916-wcd-digital: Check failure for devm_snd_soc_register_component

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit e927b05f3cc20de87f6b7d912a5bbe556931caca ]

devm_snd_soc_register_component() may fails, we should check the error
and do the corresponding error handling.

Fixes: 150db8c5afa1 ("ASoC: codecs: Add msm8916-wcd digital codec")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220403115239.30140-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/msm8916-wcd-digital.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/msm8916-wcd-digital.c b/sound/soc/codecs/msm8916-wcd-digital.c
index 9ad7fc0baf07..20a07c92b2fc 100644
--- a/sound/soc/codecs/msm8916-wcd-digital.c
+++ b/sound/soc/codecs/msm8916-wcd-digital.c
@@ -1206,9 +1206,16 @@ static int msm8916_wcd_digital_probe(struct platform_device *pdev)
 
 	dev_set_drvdata(dev, priv);
 
-	return devm_snd_soc_register_component(dev, &msm8916_wcd_digital,
+	ret = devm_snd_soc_register_component(dev, &msm8916_wcd_digital,
 				      msm8916_wcd_digital_dai,
 				      ARRAY_SIZE(msm8916_wcd_digital_dai));
+	if (ret)
+		goto err_mclk;
+
+	return 0;
+
+err_mclk:
+	clk_disable_unprepare(priv->mclk);
 err_clk:
 	clk_disable_unprepare(priv->ahbclk);
 	return ret;
-- 
2.35.1

[PATCH 5.10 12/86] ASoC: codecs: wcd934x: do not switch off SIDO Buck when codec is in use

[Greg Kroah-Hartman]

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

[ Upstream commit db6dd1bee63d1d88fbddfe07af800af5948ac28e ]

SIDO(Single-Inductor Dual-Ouput) Buck powers up both analog and digital
circuits along with internal memory, powering off this is the last thing
that codec should do when going to very low power.

Current code was powering off this Buck if there are no users of sysclk,
which is not correct. Powering off this buck will result in no register access.
This code path was never tested until recently after adding pm support
in SoundWire controller. Fix this by removing the buck poweroff when the
codec is active and also the code that is not used.

Without this patch all the read/write transactions will never complete and
results in SLIMBus Errors like:

qcom,slim-ngd qcom,slim-ngd.1: Tx:MT:0x0, MC:0x60, LA:0xcf failed:-110
wcd934x-codec wcd934x-codec.1.auto: ASoC: error at soc_component_read_no_lock
	on wcd934x-codec.1.auto for register: [0x00000d05] -110
qcom,slim-ngd-ctrl 171c0000.slim: Error Interrupt received 0x82000000

Reported-by: Amit Pundir <amit.pundir@linaro.org>
Fixes: a61f3b4f476e ("ASoC: wcd934x: add support to wcd9340/wcd9341 codec")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Amit Pundir <amit.pundir@linaro.org>
Link: https://lore.kernel.org/r/20220407094313.2880-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/wcd934x.c | 26 +-------------------------
 1 file changed, 1 insertion(+), 25 deletions(-)

diff --git a/sound/soc/codecs/wcd934x.c b/sound/soc/codecs/wcd934x.c
index 8540ac230d0e..fd704df9b175 100644
--- a/sound/soc/codecs/wcd934x.c
+++ b/sound/soc/codecs/wcd934x.c
@@ -1188,29 +1188,7 @@ static int wcd934x_set_sido_input_src(struct wcd934x_codec *wcd, int sido_src)
 	if (sido_src == wcd->sido_input_src)
 		return 0;
 
-	if (sido_src == SIDO_SOURCE_INTERNAL) {
-		regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
-				   WCD934X_ANA_BUCK_HI_ACCU_EN_MASK, 0);
-		usleep_range(100, 110);
-		regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
-				   WCD934X_ANA_BUCK_HI_ACCU_PRE_ENX_MASK, 0x0);
-		usleep_range(100, 110);
-		regmap_update_bits(wcd->regmap, WCD934X_ANA_RCO,
-				   WCD934X_ANA_RCO_BG_EN_MASK, 0);
-		usleep_range(100, 110);
-		regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
-				   WCD934X_ANA_BUCK_PRE_EN1_MASK,
-				   WCD934X_ANA_BUCK_PRE_EN1_ENABLE);
-		usleep_range(100, 110);
-		regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
-				   WCD934X_ANA_BUCK_PRE_EN2_MASK,
-				   WCD934X_ANA_BUCK_PRE_EN2_ENABLE);
-		usleep_range(100, 110);
-		regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
-				   WCD934X_ANA_BUCK_HI_ACCU_EN_MASK,
-				   WCD934X_ANA_BUCK_HI_ACCU_ENABLE);
-		usleep_range(100, 110);
-	} else if (sido_src == SIDO_SOURCE_RCO_BG) {
+	if (sido_src == SIDO_SOURCE_RCO_BG) {
 		regmap_update_bits(wcd->regmap, WCD934X_ANA_RCO,
 				   WCD934X_ANA_RCO_BG_EN_MASK,
 				   WCD934X_ANA_RCO_BG_ENABLE);
@@ -1296,8 +1274,6 @@ static int wcd934x_disable_ana_bias_and_syclk(struct wcd934x_codec *wcd)
 	regmap_update_bits(wcd->regmap, WCD934X_CLK_SYS_MCLK_PRG,
 			   WCD934X_EXT_CLK_BUF_EN_MASK |
 			   WCD934X_MCLK_EN_MASK, 0x0);
-	wcd934x_set_sido_input_src(wcd, SIDO_SOURCE_INTERNAL);
-
 	regmap_update_bits(wcd->regmap, WCD934X_ANA_BIAS,
 			   WCD934X_ANA_BIAS_EN_MASK, 0);
 	regmap_update_bits(wcd->regmap, WCD934X_ANA_BIAS,
-- 
2.35.1

[PATCH 5.10 13/86] dmaengine: imx-sdma: Fix error checking in sdma_event_remap

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit 7104b9cb35a33ad803a1adbbfa50569b008faf15 ]

of_parse_phandle() returns NULL on errors, rather than error
pointers. Using NULL check on grp_np to fix this.

Fixes: d078cd1b4185 ("dmaengine: imx-sdma: Add imx6sx platform support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220308064952.15743-1-linmq006@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/dma/imx-sdma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 306f93e4b26a..792c91cd1608 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1789,7 +1789,7 @@ static int sdma_event_remap(struct sdma_engine *sdma)
 	u32 reg, val, shift, num_map, i;
 	int ret = 0;
 
-	if (IS_ERR(np) || IS_ERR(gpr_np))
+	if (IS_ERR(np) || !gpr_np)
 		goto out;
 
 	event_remap = of_find_property(np, propname, NULL);
@@ -1837,7 +1837,7 @@ static int sdma_event_remap(struct sdma_engine *sdma)
 	}
 
 out:
-	if (!IS_ERR(gpr_np))
+	if (gpr_np)
 		of_node_put(gpr_np);
 
 	return ret;
-- 
2.35.1

[PATCH 5.10 14/86] dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources

[Greg Kroah-Hartman]

From: zhangqilong <zhangqilong3@huawei.com>

[ Upstream commit 545b2baac89b859180e51215468c05d85ea8465a ]

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
We fix it:
1) Replacing it with pm_runtime_resume_and_get to keep usage counter
   balanced.
2) Add putting operation before returning error.

Fixes:9135408c3ace4 ("dmaengine: mediatek: Add MediaTek UART APDMA support")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20220319022142.142709-1-zhangqilong3@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/dma/mediatek/mtk-uart-apdma.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/mediatek/mtk-uart-apdma.c b/drivers/dma/mediatek/mtk-uart-apdma.c
index 375e7e647df6..a1517ef1f4a0 100644
--- a/drivers/dma/mediatek/mtk-uart-apdma.c
+++ b/drivers/dma/mediatek/mtk-uart-apdma.c
@@ -274,7 +274,7 @@ static int mtk_uart_apdma_alloc_chan_resources(struct dma_chan *chan)
 	unsigned int status;
 	int ret;
 
-	ret = pm_runtime_get_sync(mtkd->ddev.dev);
+	ret = pm_runtime_resume_and_get(mtkd->ddev.dev);
 	if (ret < 0) {
 		pm_runtime_put_noidle(chan->device->dev);
 		return ret;
@@ -288,18 +288,21 @@ static int mtk_uart_apdma_alloc_chan_resources(struct dma_chan *chan)
 	ret = readx_poll_timeout(readl, c->base + VFF_EN,
 			  status, !status, 10, 100);
 	if (ret)
-		return ret;
+		goto err_pm;
 
 	ret = request_irq(c->irq, mtk_uart_apdma_irq_handler,
 			  IRQF_TRIGGER_NONE, KBUILD_MODNAME, chan);
 	if (ret < 0) {
 		dev_err(chan->device->dev, "Can't request dma IRQ\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err_pm;
 	}
 
 	if (mtkd->support_33bits)
 		mtk_uart_apdma_write(c, VFF_4G_SUPPORT, VFF_4G_SUPPORT_CLR_B);
 
+err_pm:
+	pm_runtime_put_noidle(mtkd->ddev.dev);
 	return ret;
 }
 
-- 
2.35.1

[PATCH 5.10 15/86] spi: spi-mtk-nor: initialize spi controller after resume

[Greg Kroah-Hartman]

From: Allen-KH Cheng <allen-kh.cheng@mediatek.com>

[ Upstream commit 317c2045618cc1f8d38beb8c93a7bdb6ad8638c6 ]

After system resumes, the registers of nor controller are
initialized with default values. The nor controller will
not function properly.

To handle both issues above, we add mtk_nor_init() in
mtk_nor_resume after pm_runtime_force_resume().

Fixes: 3bfd9103c7af ("spi: spi-mtk-nor: Add power management support")

Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Link: https://lore.kernel.org/r/20220412115743.22641-1-allen-kh.cheng@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-mtk-nor.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c
index 288f6c2bbd57..106e3cacba4c 100644
--- a/drivers/spi/spi-mtk-nor.c
+++ b/drivers/spi/spi-mtk-nor.c
@@ -895,7 +895,17 @@ static int __maybe_unused mtk_nor_suspend(struct device *dev)
 
 static int __maybe_unused mtk_nor_resume(struct device *dev)
 {
-	return pm_runtime_force_resume(dev);
+	struct spi_controller *ctlr = dev_get_drvdata(dev);
+	struct mtk_nor *sp = spi_controller_get_devdata(ctlr);
+	int ret;
+
+	ret = pm_runtime_force_resume(dev);
+	if (ret)
+		return ret;
+
+	mtk_nor_init(sp);
+
+	return 0;
 }
 
 static const struct dev_pm_ops mtk_nor_pm_ops = {
-- 
2.35.1

[PATCH 5.10 16/86] esp: limit skb_page_frag_refill use to a single page

[Greg Kroah-Hartman]

From: Sabrina Dubroca <sd@queasysnail.net>

[ Upstream commit 5bd8baab087dff657e05387aee802e70304cc813 ]

Commit ebe48d368e97 ("esp: Fix possible buffer overflow in ESP
transformation") tried to fix skb_page_frag_refill usage in ESP by
capping allocsize to 32k, but that doesn't completely solve the issue,
as skb_page_frag_refill may return a single page. If that happens, we
will write out of bounds, despite the check introduced in the previous
patch.

This patch forces COW in cases where we would end up calling
skb_page_frag_refill with a size larger than a page (first in
esp_output_head with tailen, then in esp_output_tail with
skb->data_len).

Fixes: cac2661c53f3 ("esp4: Avoid skb_cow_data whenever possible")
Fixes: 03e2a30f6a27 ("esp6: Avoid skb_cow_data whenever possible")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/esp.h | 2 --
 net/ipv4/esp4.c   | 5 ++---
 net/ipv6/esp6.c   | 5 ++---
 3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/include/net/esp.h b/include/net/esp.h
index 90cd02ff77ef..9c5637d41d95 100644
--- a/include/net/esp.h
+++ b/include/net/esp.h
@@ -4,8 +4,6 @@
 
 #include <linux/skbuff.h>
 
-#define ESP_SKB_FRAG_MAXSIZE (PAGE_SIZE << SKB_FRAG_PAGE_ORDER)
-
 struct ip_esp_hdr;
 
 static inline struct ip_esp_hdr *ip_esp_hdr(const struct sk_buff *skb)
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 9aae82145bc1..20d738137841 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -448,7 +448,6 @@ int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
 	struct page *page;
 	struct sk_buff *trailer;
 	int tailen = esp->tailen;
-	unsigned int allocsz;
 
 	/* this is non-NULL only with TCP/UDP Encapsulation */
 	if (x->encap) {
@@ -458,8 +457,8 @@ int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
 			return err;
 	}
 
-	allocsz = ALIGN(skb->data_len + tailen, L1_CACHE_BYTES);
-	if (allocsz > ESP_SKB_FRAG_MAXSIZE)
+	if (ALIGN(tailen, L1_CACHE_BYTES) > PAGE_SIZE ||
+	    ALIGN(skb->data_len, L1_CACHE_BYTES) > PAGE_SIZE)
 		goto cow;
 
 	if (!skb_cloned(skb)) {
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 20c7bef6829e..cb28f8928f9e 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -483,7 +483,6 @@ int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info
 	struct page *page;
 	struct sk_buff *trailer;
 	int tailen = esp->tailen;
-	unsigned int allocsz;
 
 	if (x->encap) {
 		int err = esp6_output_encap(x, skb, esp);
@@ -492,8 +491,8 @@ int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info
 			return err;
 	}
 
-	allocsz = ALIGN(skb->data_len + tailen, L1_CACHE_BYTES);
-	if (allocsz > ESP_SKB_FRAG_MAXSIZE)
+	if (ALIGN(tailen, L1_CACHE_BYTES) > PAGE_SIZE ||
+	    ALIGN(skb->data_len, L1_CACHE_BYTES) > PAGE_SIZE)
 		goto cow;
 
 	if (!skb_cloned(skb)) {
-- 
2.35.1

[PATCH 5.10 17/86] igc: Fix infinite loop in release_swfw_sync

[Greg Kroah-Hartman]

From: Sasha Neftin <sasha.neftin@intel.com>

[ Upstream commit 907862e9aef75bf89e2b265efcc58870be06081e ]

An infinite loop may occur if we fail to acquire the HW semaphore,
which is needed for resource release.
This will typically happen if the hardware is surprise-removed.
At this stage there is nothing to do, except log an error and quit.

Fixes: c0071c7aa5fe ("igc: Add HW initialization code")
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/intel/igc/igc_i225.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/igc/igc_i225.c b/drivers/net/ethernet/intel/igc/igc_i225.c
index 553d6bc78e6b..624236a4202e 100644
--- a/drivers/net/ethernet/intel/igc/igc_i225.c
+++ b/drivers/net/ethernet/intel/igc/igc_i225.c
@@ -156,8 +156,15 @@ void igc_release_swfw_sync_i225(struct igc_hw *hw, u16 mask)
 {
 	u32 swfw_sync;
 
-	while (igc_get_hw_semaphore_i225(hw))
-		; /* Empty */
+	/* Releasing the resource requires first getting the HW semaphore.
+	 * If we fail to get the semaphore, there is nothing we can do,
+	 * except log an error and quit. We are not allowed to hang here
+	 * indefinitely, as it may cause denial of service or system crash.
+	 */
+	if (igc_get_hw_semaphore_i225(hw)) {
+		hw_dbg("Failed to release SW_FW_SYNC.\n");
+		return;
+	}
 
 	swfw_sync = rd32(IGC_SW_FW_SYNC);
 	swfw_sync &= ~mask;
-- 
2.35.1

[PATCH 5.10 18/86] igc: Fix BUG: scheduling while atomic

[Greg Kroah-Hartman]

From: Sasha Neftin <sasha.neftin@intel.com>

[ Upstream commit c80a29f0fe9b6f5457e0788e27d1110577eba99b ]

Replace usleep_range() method with udelay() method to allow atomic contexts
in low-level MDIO access functions.

The following issue can be seen by doing the following:
$ modprobe -r bonding
$ modprobe -v bonding max_bonds=1 mode=1 miimon=100 use_carrier=0
$ ip link set bond0 up
$ ifenslave bond0 eth0 eth1

[  982.357308] BUG: scheduling while atomic: kworker/u64:0/9/0x00000002
[  982.364431] INFO: lockdep is turned off.
[  982.368824] Modules linked in: bonding sctp ip6_udp_tunnel udp_tunnel mlx4_ib ib_uverbs ib_core mlx4_en mlx4_core nfp tls sunrpc intel_rapl_msr iTCO_wdt iTCO_vendor_support mxm_wmi dcdbas intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel rapl intel_cstate intel_uncore pcspkr lpc_ich mei_me ipmi_ssif mei ipmi_si ipmi_devintf ipmi_msghandler wmi acpi_power_meter xfs libcrc32c sr_mod cdrom sd_mod t10_pi sg mgag200 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm ahci libahci crc32c_intel libata i2c_algo_bit tg3 megaraid_sas igc dm_mirror dm_region_hash dm_log dm_mod [last unloaded: bonding]
[  982.437941] CPU: 25 PID: 9 Comm: kworker/u64:0 Kdump: loaded Tainted: G        W        --------- -  - 4.18.0-348.el8.x86_64+debug #1
[  982.451333] Hardware name: Dell Inc. PowerEdge R730/0H21J3, BIOS 2.7.0 12/005/2017
[  982.459791] Workqueue: bond0 bond_mii_monitor [bonding]
[  982.465622] Call Trace:
[  982.468355]  dump_stack+0x8e/0xd0
[  982.472056]  __schedule_bug.cold.60+0x3a/0x60
[  982.476919]  __schedule+0x147b/0x1bc0
[  982.481007]  ? firmware_map_remove+0x16b/0x16b
[  982.485967]  ? hrtimer_fixup_init+0x40/0x40
[  982.490625]  schedule+0xd9/0x250
[  982.494227]  schedule_hrtimeout_range_clock+0x10d/0x2c0
[  982.500058]  ? hrtimer_nanosleep_restart+0x130/0x130
[  982.505598]  ? hrtimer_init_sleeper_on_stack+0x90/0x90
[  982.511332]  ? usleep_range+0x88/0x130
[  982.515514]  ? recalibrate_cpu_khz+0x10/0x10
[  982.520279]  ? ktime_get+0xab/0x1c0
[  982.524175]  ? usleep_range+0x88/0x130
[  982.528355]  usleep_range+0xdd/0x130
[  982.532344]  ? console_conditional_schedule+0x30/0x30
[  982.537987]  ? igc_put_hw_semaphore+0x17/0x60 [igc]
[  982.543432]  igc_read_phy_reg_gpy+0x111/0x2b0 [igc]
[  982.548887]  igc_phy_has_link+0xfa/0x260 [igc]
[  982.553847]  ? igc_get_phy_id+0x210/0x210 [igc]
[  982.558894]  ? lock_acquire+0x34d/0x890
[  982.563187]  ? lock_downgrade+0x710/0x710
[  982.567659]  ? rcu_read_unlock+0x50/0x50
[  982.572039]  igc_check_for_copper_link+0x106/0x210 [igc]
[  982.577970]  ? igc_config_fc_after_link_up+0x840/0x840 [igc]
[  982.584286]  ? rcu_read_unlock+0x50/0x50
[  982.588661]  ? lock_release+0x591/0xb80
[  982.592939]  ? lock_release+0x591/0xb80
[  982.597220]  igc_has_link+0x113/0x330 [igc]
[  982.601887]  ? lock_downgrade+0x710/0x710
[  982.606362]  igc_ethtool_get_link+0x6d/0x90 [igc]
[  982.611614]  bond_check_dev_link+0x131/0x2c0 [bonding]
[  982.617350]  ? bond_time_in_interval+0xd0/0xd0 [bonding]
[  982.623277]  ? rcu_read_lock_held+0x62/0xc0
[  982.627944]  ? rcu_read_lock_sched_held+0xe0/0xe0
[  982.633198]  bond_mii_monitor+0x314/0x2500 [bonding]
[  982.638738]  ? lock_contended+0x880/0x880
[  982.643214]  ? bond_miimon_link_change+0xa0/0xa0 [bonding]
[  982.649336]  ? lock_acquire+0x34d/0x890
[  982.653615]  ? lock_downgrade+0x710/0x710
[  982.658089]  ? debug_object_deactivate+0x221/0x340
[  982.663436]  ? rcu_read_unlock+0x50/0x50
[  982.667811]  ? debug_print_object+0x2b0/0x2b0
[  982.672672]  ? __switch_to_asm+0x41/0x70
[  982.677049]  ? __switch_to_asm+0x35/0x70
[  982.681426]  ? _raw_spin_unlock_irq+0x24/0x40
[  982.686288]  ? trace_hardirqs_on+0x20/0x195
[  982.690956]  ? _raw_spin_unlock_irq+0x24/0x40
[  982.695818]  process_one_work+0x8f0/0x1770
[  982.700390]  ? pwq_dec_nr_in_flight+0x320/0x320
[  982.705443]  ? debug_show_held_locks+0x50/0x50
[  982.710403]  worker_thread+0x87/0xb40
[  982.714489]  ? process_one_work+0x1770/0x1770
[  982.719349]  kthread+0x344/0x410
[  982.722950]  ? kthread_insert_work_sanity_check+0xd0/0xd0
[  982.728975]  ret_from_fork+0x3a/0x50

Fixes: 5586838fe9ce ("igc: Add code for PHY support")
Reported-by: Corinna Vinschen <vinschen@redhat.com>
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Corinna Vinschen <vinschen@redhat.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/intel/igc/igc_phy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/igc/igc_phy.c b/drivers/net/ethernet/intel/igc/igc_phy.c
index e380b7a3ea63..8de4de2e5636 100644
--- a/drivers/net/ethernet/intel/igc/igc_phy.c
+++ b/drivers/net/ethernet/intel/igc/igc_phy.c
@@ -583,7 +583,7 @@ static s32 igc_read_phy_reg_mdic(struct igc_hw *hw, u32 offset, u16 *data)
 	 * the lower time out
 	 */
 	for (i = 0; i < IGC_GEN_POLL_TIMEOUT; i++) {
-		usleep_range(500, 1000);
+		udelay(50);
 		mdic = rd32(IGC_MDIC);
 		if (mdic & IGC_MDIC_READY)
 			break;
@@ -640,7 +640,7 @@ static s32 igc_write_phy_reg_mdic(struct igc_hw *hw, u32 offset, u16 data)
 	 * the lower time out
 	 */
 	for (i = 0; i < IGC_GEN_POLL_TIMEOUT; i++) {
-		usleep_range(500, 1000);
+		udelay(50);
 		mdic = rd32(IGC_MDIC);
 		if (mdic & IGC_MDIC_READY)
 			break;
-- 
2.35.1

[PATCH 5.10 19/86] rxrpc: Restore removed timer deletion

[Greg Kroah-Hartman]

From: David Howells <dhowells@redhat.com>

[ Upstream commit ee3b0826b4764f6c13ad6db67495c5a1c38e9025 ]

A recent patch[1] from Eric Dumazet flipped the order in which the
keepalive timer and the keepalive worker were cancelled in order to fix a
syzbot reported issue[2].  Unfortunately, this enables the mirror image bug
whereby the timer races with rxrpc_exit_net(), restarting the worker after
it has been cancelled:

	CPU 1		CPU 2
	===============	=====================
			if (rxnet->live)
			<INTERRUPT>
	rxnet->live = false;
 	cancel_work_sync(&rxnet->peer_keepalive_work);
			rxrpc_queue_work(&rxnet->peer_keepalive_work);
	del_timer_sync(&rxnet->peer_keepalive_timer);

Fix this by restoring the removed del_timer_sync() so that we try to remove
the timer twice.  If the timer runs again, it should see ->live == false
and not restart the worker.

Fixes: 1946014ca3b1 ("rxrpc: fix a race in rxrpc_exit_net()")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Eric Dumazet <edumazet@google.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/20220404183439.3537837-1-eric.dumazet@gmail.com/ [1]
Link: https://syzkaller.appspot.com/bug?extid=724378c4bb58f703b09a [2]
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/rxrpc/net_ns.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/rxrpc/net_ns.c b/net/rxrpc/net_ns.c
index f15d6942da45..cc7e30733feb 100644
--- a/net/rxrpc/net_ns.c
+++ b/net/rxrpc/net_ns.c
@@ -113,7 +113,9 @@ static __net_exit void rxrpc_exit_net(struct net *net)
 	struct rxrpc_net *rxnet = rxrpc_net(net);
 
 	rxnet->live = false;
+	del_timer_sync(&rxnet->peer_keepalive_timer);
 	cancel_work_sync(&rxnet->peer_keepalive_work);
+	/* Remove the timer again as the worker may have restarted it. */
 	del_timer_sync(&rxnet->peer_keepalive_timer);
 	rxrpc_destroy_all_calls(rxnet);
 	rxrpc_destroy_all_connections(rxnet);
-- 
2.35.1

[PATCH 5.10 20/86] net/smc: Fix sock leak when release after smc_shutdown()

[Greg Kroah-Hartman]

From: Tony Lu <tonylu@linux.alibaba.com>

[ Upstream commit 1a74e99323746353bba11562a2f2d0aa8102f402 ]

Since commit e5d5aadcf3cd ("net/smc: fix sk_refcnt underflow on linkdown
and fallback"), for a fallback connection, __smc_release() does not call
sock_put() if its state is already SMC_CLOSED.

When calling smc_shutdown() after falling back, its state is set to
SMC_CLOSED but does not call sock_put(), so this patch calls it.

Reported-and-tested-by: syzbot+6e29a053eb165bd50de5@syzkaller.appspotmail.com
Fixes: e5d5aadcf3cd ("net/smc: fix sk_refcnt underflow on linkdown and fallback")
Signed-off-by: Tony Lu <tonylu@linux.alibaba.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/smc/af_smc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 4f16d406ad8e..1b98f3241150 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -2144,8 +2144,10 @@ static int smc_shutdown(struct socket *sock, int how)
 	if (smc->use_fallback) {
 		rc = kernel_sock_shutdown(smc->clcsock, how);
 		sk->sk_shutdown = smc->clcsock->sk->sk_shutdown;
-		if (sk->sk_shutdown == SHUTDOWN_MASK)
+		if (sk->sk_shutdown == SHUTDOWN_MASK) {
 			sk->sk_state = SMC_CLOSED;
+			sock_put(sk);
+		}
 		goto out;
 	}
 	switch (how) {
-- 
2.35.1

[PATCH 5.10 21/86] net/packet: fix packet_sock xmit return value checking

[Greg Kroah-Hartman]

From: Hangbin Liu <liuhangbin@gmail.com>

[ Upstream commit 29e8e659f984be00d75ec5fef4e37c88def72712 ]

packet_sock xmit could be dev_queue_xmit, which also returns negative
errors. So only checking positive errors is not enough, or userspace
sendmsg may return success while packet is not send out.

Move the net_xmit_errno() assignment in the braces as checkpatch.pl said
do not use assignment in if condition.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/packet/af_packet.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index d0c95d7dd292..5ee600d108a0 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2817,8 +2817,9 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 
 		status = TP_STATUS_SEND_REQUEST;
 		err = po->xmit(skb);
-		if (unlikely(err > 0)) {
-			err = net_xmit_errno(err);
+		if (unlikely(err != 0)) {
+			if (err > 0)
+				err = net_xmit_errno(err);
 			if (err && __packet_get_status(po, ph) ==
 				   TP_STATUS_AVAILABLE) {
 				/* skb was destructed already */
@@ -3019,8 +3020,12 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
 		skb->no_fcs = 1;
 
 	err = po->xmit(skb);
-	if (err > 0 && (err = net_xmit_errno(err)) != 0)
-		goto out_unlock;
+	if (unlikely(err != 0)) {
+		if (err > 0)
+			err = net_xmit_errno(err);
+		if (err)
+			goto out_unlock;
+	}
 
 	dev_put(dev);
 
-- 
2.35.1

[PATCH 5.10 22/86] ip6_gre: Avoid updating tunnel->tun_hlen in __gre6_xmit()

[Greg Kroah-Hartman]

From: Peilin Ye <peilin.ye@bytedance.com>

[ Upstream commit f40c064e933d7787ca7411b699504d7a2664c1f5 ]

Do not update tunnel->tun_hlen in data plane code.  Use a local variable
instead, just like "tunnel_hlen" in net/ipv4/ip_gre.c:gre_fb_xmit().

Co-developed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv6/ip6_gre.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 9a0263f25232..949d6fbc1ca0 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -743,6 +743,7 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb,
 		struct ip_tunnel_info *tun_info;
 		const struct ip_tunnel_key *key;
 		__be16 flags;
+		int tun_hlen;
 
 		tun_info = skb_tunnel_info_txcheck(skb);
 		if (IS_ERR(tun_info) ||
@@ -760,9 +761,9 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb,
 		dsfield = key->tos;
 		flags = key->tun_flags &
 			(TUNNEL_CSUM | TUNNEL_KEY | TUNNEL_SEQ);
-		tunnel->tun_hlen = gre_calc_hlen(flags);
+		tun_hlen = gre_calc_hlen(flags);
 
-		gre_build_header(skb, tunnel->tun_hlen,
+		gre_build_header(skb, tun_hlen,
 				 flags, protocol,
 				 tunnel_id_to_key32(tun_info->key.tun_id),
 				 (flags & TUNNEL_SEQ) ? htonl(tunnel->o_seqno++)
-- 
2.35.1

[PATCH 5.10 23/86] ip6_gre: Fix skb_under_panic in __gre6_xmit()

[Greg Kroah-Hartman]

From: Peilin Ye <peilin.ye@bytedance.com>

[ Upstream commit ab198e1d0dd8dc4bc7575fb50758e2cbd51e14e1 ]

Feng reported an skb_under_panic BUG triggered by running
test_ip6gretap() in tools/testing/selftests/bpf/test_tunnel.sh:

[   82.492551] skbuff: skb_under_panic: text:ffffffffb268bb8e len:403 put:12 head:ffff9997c5480000 data:ffff9997c547fff8 tail:0x18b end:0x2c0 dev:ip6gretap11
<...>
[   82.607380] Call Trace:
[   82.609389]  <TASK>
[   82.611136]  skb_push.cold.109+0x10/0x10
[   82.614289]  __gre6_xmit+0x41e/0x590
[   82.617169]  ip6gre_tunnel_xmit+0x344/0x3f0
[   82.620526]  dev_hard_start_xmit+0xf1/0x330
[   82.623882]  sch_direct_xmit+0xe4/0x250
[   82.626961]  __dev_queue_xmit+0x720/0xfe0
<...>
[   82.633431]  packet_sendmsg+0x96a/0x1cb0
[   82.636568]  sock_sendmsg+0x30/0x40
<...>

The following sequence of events caused the BUG:

1. During ip6gretap device initialization, tunnel->tun_hlen (e.g. 4) is
   calculated based on old flags (see ip6gre_calc_hlen());
2. packet_snd() reserves header room for skb A, assuming
   tunnel->tun_hlen is 4;
3. Later (in clsact Qdisc), the eBPF program sets a new tunnel key for
   skb A using bpf_skb_set_tunnel_key() (see _ip6gretap_set_tunnel());
4. __gre6_xmit() detects the new tunnel key, and recalculates
   "tun_hlen" (e.g. 12) based on new flags (e.g. TUNNEL_KEY and
   TUNNEL_SEQ);
5. gre_build_header() calls skb_push() with insufficient reserved header
   room, triggering the BUG.

As sugguested by Cong, fix it by moving the call to skb_cow_head() after
the recalculation of tun_hlen.

Reproducer:

  OBJ=$LINUX/tools/testing/selftests/bpf/test_tunnel_kern.o

  ip netns add at_ns0
  ip link add veth0 type veth peer name veth1
  ip link set veth0 netns at_ns0
  ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
  ip netns exec at_ns0 ip link set dev veth0 up
  ip link set dev veth1 up mtu 1500
  ip addr add dev veth1 172.16.1.200/24

  ip netns exec at_ns0 ip addr add ::11/96 dev veth0
  ip netns exec at_ns0 ip link set dev veth0 up
  ip addr add dev veth1 ::22/96
  ip link set dev veth1 up

  ip netns exec at_ns0 \
  	ip link add dev ip6gretap00 type ip6gretap seq flowlabel 0xbcdef key 2 \
  	local ::11 remote ::22

  ip netns exec at_ns0 ip addr add dev ip6gretap00 10.1.1.100/24
  ip netns exec at_ns0 ip addr add dev ip6gretap00 fc80::100/96
  ip netns exec at_ns0 ip link set dev ip6gretap00 up

  ip link add dev ip6gretap11 type ip6gretap external
  ip addr add dev ip6gretap11 10.1.1.200/24
  ip addr add dev ip6gretap11 fc80::200/24
  ip link set dev ip6gretap11 up

  tc qdisc add dev ip6gretap11 clsact
  tc filter add dev ip6gretap11 egress bpf da obj $OBJ sec ip6gretap_set_tunnel
  tc filter add dev ip6gretap11 ingress bpf da obj $OBJ sec ip6gretap_get_tunnel

  ping6 -c 3 -w 10 -q ::11

Fixes: 6712abc168eb ("ip6_gre: add ip6 gre and gretap collect_md mode")
Reported-by: Feng Zhou <zhoufeng.zf@bytedance.com>
Co-developed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv6/ip6_gre.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 949d6fbc1ca0..1f6c752f13b4 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -733,9 +733,6 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb,
 	else
 		fl6->daddr = tunnel->parms.raddr;
 
-	if (skb_cow_head(skb, dev->needed_headroom ?: tunnel->hlen))
-		return -ENOMEM;
-
 	/* Push GRE header. */
 	protocol = (dev->type == ARPHRD_ETHER) ? htons(ETH_P_TEB) : proto;
 
@@ -763,6 +760,9 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb,
 			(TUNNEL_CSUM | TUNNEL_KEY | TUNNEL_SEQ);
 		tun_hlen = gre_calc_hlen(flags);
 
+		if (skb_cow_head(skb, dev->needed_headroom ?: tun_hlen + tunnel->encap_hlen))
+			return -ENOMEM;
+
 		gre_build_header(skb, tun_hlen,
 				 flags, protocol,
 				 tunnel_id_to_key32(tun_info->key.tun_id),
@@ -773,6 +773,9 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb,
 		if (tunnel->parms.o_flags & TUNNEL_SEQ)
 			tunnel->o_seqno++;
 
+		if (skb_cow_head(skb, dev->needed_headroom ?: tunnel->hlen))
+			return -ENOMEM;
+
 		gre_build_header(skb, tunnel->tun_hlen, tunnel->parms.o_flags,
 				 protocol, tunnel->parms.o_key,
 				 htonl(tunnel->o_seqno));
-- 
2.35.1

[PATCH 5.10 24/86] net/sched: cls_u32: fix possible leak in u32_init_knode()

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit ec5b0f605b105457f257f2870acad4a5d463984b ]

While investigating a related syzbot report,
I found that whenever call to tcf_exts_init()
from u32_init_knode() is failing, we end up
with an elevated refcount on ht->refcnt

To avoid that, only increase the refcount after
all possible errors have been evaluated.

Fixes: b9a24bb76bf6 ("net_sched: properly handle failure case of tcf_exts_init()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/sched/cls_u32.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index b61db335c49d..da042bc8b239 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -814,10 +814,6 @@ static struct tc_u_knode *u32_init_knode(struct net *net, struct tcf_proto *tp,
 	new->flags = n->flags;
 	RCU_INIT_POINTER(new->ht_down, ht);
 
-	/* bump reference count as long as we hold pointer to structure */
-	if (ht)
-		ht->refcnt++;
-
 #ifdef CONFIG_CLS_U32_PERF
 	/* Statistics may be incremented by readers during update
 	 * so we must keep them in tact. When the node is later destroyed
@@ -839,6 +835,10 @@ static struct tc_u_knode *u32_init_knode(struct net *net, struct tcf_proto *tp,
 		return NULL;
 	}
 
+	/* bump reference count as long as we hold pointer to structure */
+	if (ht)
+		ht->refcnt++;
+
 	return new;
 }
 
-- 
2.35.1

[PATCH 5.10 25/86] l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu

[Greg Kroah-Hartman]

From: David Ahern <dsahern@kernel.org>

[ Upstream commit 83daab06252ee5d0e1f4373ff28b79304945fc19 ]

Next patch uses l3mdev_master_upper_ifindex_by_index_rcu which throws
a splat with debug kernels:

[13783.087570] ------------[ cut here ]------------
[13783.093974] RTNL: assertion failed at net/core/dev.c (6702)
[13783.100761] WARNING: CPU: 3 PID: 51132 at net/core/dev.c:6702 netdev_master_upper_dev_get+0x16a/0x1a0

[13783.184226] CPU: 3 PID: 51132 Comm: kworker/3:3 Not tainted 5.17.0-custom-100090-g6f963aafb1cc #682
[13783.194788] Hardware name: Mellanox Technologies Ltd. MSN2010/SA002610, BIOS 5.6.5 08/24/2017
[13783.204755] Workqueue: mld mld_ifc_work [ipv6]
[13783.210338] RIP: 0010:netdev_master_upper_dev_get+0x16a/0x1a0
[13783.217209] Code: 0f 85 e3 fe ff ff e8 65 ac ec fe ba 2e 1a 00 00 48 c7 c6 60 6f 38 83 48 c7 c7 c0 70 38 83 c6 05 5e b5 d7 01 01 e8 c6 29 52 00 <0f> 0b e9 b8 fe ff ff e8 5a 6c 35 ff e9 1c ff ff ff 48 89 ef e8 7d
[13783.238659] RSP: 0018:ffffc9000b37f5a8 EFLAGS: 00010286
[13783.244995] RAX: 0000000000000000 RBX: ffff88812ee5c000 RCX: 0000000000000000
[13783.253379] RDX: ffff88811ce09d40 RSI: ffffffff812d0fcd RDI: fffff5200166fea7
[13783.261769] RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8882375f4287
[13783.270138] R10: ffffed1046ebe850 R11: 0000000000000001 R12: dffffc0000000000
[13783.278510] R13: 0000000000000275 R14: ffffc9000b37f688 R15: ffff8881273b4af8
[13783.286870] FS:  0000000000000000(0000) GS:ffff888237400000(0000) knlGS:0000000000000000
[13783.296352] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[13783.303177] CR2: 00007ff25fc9b2e8 CR3: 0000000174d23000 CR4: 00000000001006e0
[13783.311546] Call Trace:
[13783.314660]  <TASK>
[13783.317553]  l3mdev_master_upper_ifindex_by_index_rcu+0x43/0xe0
...

Change l3mdev_master_upper_ifindex_by_index_rcu to use
netdev_master_upper_dev_get_rcu.

Fixes: 6a6d6681ac1a ("l3mdev: add function to retreive upper master")
Signed-off-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: David Ahern <dsahern@kernel.org>
Cc: Alexis Bauvin <abauvin@scaleway.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/l3mdev/l3mdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/l3mdev/l3mdev.c b/net/l3mdev/l3mdev.c
index 864326f150e2..f2c3a61ad134 100644
--- a/net/l3mdev/l3mdev.c
+++ b/net/l3mdev/l3mdev.c
@@ -147,7 +147,7 @@ int l3mdev_master_upper_ifindex_by_index_rcu(struct net *net, int ifindex)
 
 	dev = dev_get_by_index_rcu(net, ifindex);
 	while (dev && !netif_is_l3_master(dev))
-		dev = netdev_master_upper_dev_get(dev);
+		dev = netdev_master_upper_dev_get_rcu(dev);
 
 	return dev ? dev->ifindex : 0;
 }
-- 
2.35.1

[PATCH 5.10 26/86] ipv6: make ip6_rt_gc_expire an atomic_t

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 9cb7c013420f98fa6fd12fc6a5dc055170c108db ]

Reads and Writes to ip6_rt_gc_expire always have been racy,
as syzbot reported lately [1]

There is a possible risk of under-flow, leading
to unexpected high value passed to fib6_run_gc(),
although I have not observed this in the field.

Hosts hitting ip6_dst_gc() very hard are under pretty bad
state anyway.

[1]
BUG: KCSAN: data-race in ip6_dst_gc / ip6_dst_gc

read-write to 0xffff888102110744 of 4 bytes by task 13165 on cpu 1:
 ip6_dst_gc+0x1f3/0x220 net/ipv6/route.c:3311
 dst_alloc+0x9b/0x160 net/core/dst.c:86
 ip6_dst_alloc net/ipv6/route.c:344 [inline]
 icmp6_dst_alloc+0xb2/0x360 net/ipv6/route.c:3261
 mld_sendpack+0x2b9/0x580 net/ipv6/mcast.c:1807
 mld_send_cr net/ipv6/mcast.c:2119 [inline]
 mld_ifc_work+0x576/0x800 net/ipv6/mcast.c:2651
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

read-write to 0xffff888102110744 of 4 bytes by task 11607 on cpu 0:
 ip6_dst_gc+0x1f3/0x220 net/ipv6/route.c:3311
 dst_alloc+0x9b/0x160 net/core/dst.c:86
 ip6_dst_alloc net/ipv6/route.c:344 [inline]
 icmp6_dst_alloc+0xb2/0x360 net/ipv6/route.c:3261
 mld_sendpack+0x2b9/0x580 net/ipv6/mcast.c:1807
 mld_send_cr net/ipv6/mcast.c:2119 [inline]
 mld_ifc_work+0x576/0x800 net/ipv6/mcast.c:2651
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

value changed: 0x00000bb3 -> 0x00000ba9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 11607 Comm: kworker/0:21 Not tainted 5.18.0-rc1-syzkaller-00037-g42e7a03d3bad-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: mld mld_ifc_work

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220413181333.649424-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/netns/ipv6.h |  4 ++--
 net/ipv6/route.c         | 11 ++++++-----
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 1c0fbe3abf24..f179996c6184 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -78,8 +78,8 @@ struct netns_ipv6 {
 	struct dst_ops		ip6_dst_ops;
 	rwlock_t		fib6_walker_lock;
 	spinlock_t		fib6_gc_lock;
-	unsigned int		 ip6_rt_gc_expire;
-	unsigned long		 ip6_rt_last_gc;
+	atomic_t		ip6_rt_gc_expire;
+	unsigned long		ip6_rt_last_gc;
 	unsigned char		flowlabel_has_excl;
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
 	bool			fib6_has_custom_rules;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 776b1b58c5dc..6ace9f0ac22f 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3192,6 +3192,7 @@ static int ip6_dst_gc(struct dst_ops *ops)
 	int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity;
 	int rt_gc_timeout = net->ipv6.sysctl.ip6_rt_gc_timeout;
 	unsigned long rt_last_gc = net->ipv6.ip6_rt_last_gc;
+	unsigned int val;
 	int entries;
 
 	entries = dst_entries_get_fast(ops);
@@ -3202,13 +3203,13 @@ static int ip6_dst_gc(struct dst_ops *ops)
 	    entries <= rt_max_size)
 		goto out;
 
-	net->ipv6.ip6_rt_gc_expire++;
-	fib6_run_gc(net->ipv6.ip6_rt_gc_expire, net, true);
+	fib6_run_gc(atomic_inc_return(&net->ipv6.ip6_rt_gc_expire), net, true);
 	entries = dst_entries_get_slow(ops);
 	if (entries < ops->gc_thresh)
-		net->ipv6.ip6_rt_gc_expire = rt_gc_timeout>>1;
+		atomic_set(&net->ipv6.ip6_rt_gc_expire, rt_gc_timeout >> 1);
 out:
-	net->ipv6.ip6_rt_gc_expire -= net->ipv6.ip6_rt_gc_expire>>rt_elasticity;
+	val = atomic_read(&net->ipv6.ip6_rt_gc_expire);
+	atomic_set(&net->ipv6.ip6_rt_gc_expire, val - (val >> rt_elasticity));
 	return entries > rt_max_size;
 }
 
@@ -6363,7 +6364,7 @@ static int __net_init ip6_route_net_init(struct net *net)
 	net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40;
 	net->ipv6.sysctl.skip_notify_on_dev_down = 0;
 
-	net->ipv6.ip6_rt_gc_expire = 30*HZ;
+	atomic_set(&net->ipv6.ip6_rt_gc_expire, 30*HZ);
 
 	ret = 0;
 out:
-- 
2.35.1

[PATCH 5.10 27/86] netlink: reset network and mac headers in netlink_dump()

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 99c07327ae11e24886d552dddbe4537bfca2765d ]

netlink_dump() is allocating an skb, reserves space in it
but forgets to reset network header.

This allows a BPF program, invoked later from sk_filter()
to access uninitialized kernel memory from the reserved
space.

Theorically mac header reset could be omitted, because
it is set to a special initial value.
bpf_internal_load_pointer_neg_helper calls skb_mac_header()
without checking skb_mac_header_was_set().
Relying on skb->len not being too big seems fragile.
We also could add a sanity check in bpf_internal_load_pointer_neg_helper()
to avoid surprises in the future.

syzbot report was:

BUG: KMSAN: uninit-value in ___bpf_prog_run+0xa22b/0xb420 kernel/bpf/core.c:1637
 ___bpf_prog_run+0xa22b/0xb420 kernel/bpf/core.c:1637
 __bpf_prog_run32+0x121/0x180 kernel/bpf/core.c:1796
 bpf_dispatcher_nop_func include/linux/bpf.h:784 [inline]
 __bpf_prog_run include/linux/filter.h:626 [inline]
 bpf_prog_run include/linux/filter.h:633 [inline]
 __bpf_prog_run_save_cb+0x168/0x580 include/linux/filter.h:756
 bpf_prog_run_save_cb include/linux/filter.h:770 [inline]
 sk_filter_trim_cap+0x3bc/0x8c0 net/core/filter.c:150
 sk_filter include/linux/filter.h:905 [inline]
 netlink_dump+0xe0c/0x16c0 net/netlink/af_netlink.c:2276
 netlink_recvmsg+0x1129/0x1c80 net/netlink/af_netlink.c:2002
 sock_recvmsg_nosec net/socket.c:948 [inline]
 sock_recvmsg net/socket.c:966 [inline]
 sock_read_iter+0x5a9/0x630 net/socket.c:1039
 do_iter_readv_writev+0xa7f/0xc70
 do_iter_read+0x52c/0x14c0 fs/read_write.c:786
 vfs_readv fs/read_write.c:906 [inline]
 do_readv+0x432/0x800 fs/read_write.c:943
 __do_sys_readv fs/read_write.c:1034 [inline]
 __se_sys_readv fs/read_write.c:1031 [inline]
 __x64_sys_readv+0xe5/0x120 fs/read_write.c:1031
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was stored to memory at:
 ___bpf_prog_run+0x96c/0xb420 kernel/bpf/core.c:1558
 __bpf_prog_run32+0x121/0x180 kernel/bpf/core.c:1796
 bpf_dispatcher_nop_func include/linux/bpf.h:784 [inline]
 __bpf_prog_run include/linux/filter.h:626 [inline]
 bpf_prog_run include/linux/filter.h:633 [inline]
 __bpf_prog_run_save_cb+0x168/0x580 include/linux/filter.h:756
 bpf_prog_run_save_cb include/linux/filter.h:770 [inline]
 sk_filter_trim_cap+0x3bc/0x8c0 net/core/filter.c:150
 sk_filter include/linux/filter.h:905 [inline]
 netlink_dump+0xe0c/0x16c0 net/netlink/af_netlink.c:2276
 netlink_recvmsg+0x1129/0x1c80 net/netlink/af_netlink.c:2002
 sock_recvmsg_nosec net/socket.c:948 [inline]
 sock_recvmsg net/socket.c:966 [inline]
 sock_read_iter+0x5a9/0x630 net/socket.c:1039
 do_iter_readv_writev+0xa7f/0xc70
 do_iter_read+0x52c/0x14c0 fs/read_write.c:786
 vfs_readv fs/read_write.c:906 [inline]
 do_readv+0x432/0x800 fs/read_write.c:943
 __do_sys_readv fs/read_write.c:1034 [inline]
 __se_sys_readv fs/read_write.c:1031 [inline]
 __x64_sys_readv+0xe5/0x120 fs/read_write.c:1031
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:737 [inline]
 slab_alloc_node mm/slub.c:3244 [inline]
 __kmalloc_node_track_caller+0xde3/0x14f0 mm/slub.c:4972
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0x545/0xf90 net/core/skbuff.c:426
 alloc_skb include/linux/skbuff.h:1158 [inline]
 netlink_dump+0x30f/0x16c0 net/netlink/af_netlink.c:2242
 netlink_recvmsg+0x1129/0x1c80 net/netlink/af_netlink.c:2002
 sock_recvmsg_nosec net/socket.c:948 [inline]
 sock_recvmsg net/socket.c:966 [inline]
 sock_read_iter+0x5a9/0x630 net/socket.c:1039
 do_iter_readv_writev+0xa7f/0xc70
 do_iter_read+0x52c/0x14c0 fs/read_write.c:786
 vfs_readv fs/read_write.c:906 [inline]
 do_readv+0x432/0x800 fs/read_write.c:943
 __do_sys_readv fs/read_write.c:1034 [inline]
 __se_sys_readv fs/read_write.c:1031 [inline]
 __x64_sys_readv+0xe5/0x120 fs/read_write.c:1031
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

CPU: 0 PID: 3470 Comm: syz-executor751 Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

Fixes: db65a3aaf29e ("netlink: Trim skb to alloc size to avoid MSG_TRUNC")
Fixes: 9063e21fb026 ("netlink: autosize skb lengthes")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20220415181442.551228-1-eric.dumazet@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netlink/af_netlink.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index f37916156ca5..cbfb601c4ee9 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2276,6 +2276,13 @@ static int netlink_dump(struct sock *sk)
 	 * single netdev. The outcome is MSG_TRUNC error.
 	 */
 	skb_reserve(skb, skb_tailroom(skb) - alloc_size);
+
+	/* Make sure malicious BPF programs can not read unitialized memory
+	 * from skb->head -> skb->data
+	 */
+	skb_reset_network_header(skb);
+	skb_reset_mac_header(skb);
+
 	netlink_skb_set_owner_r(skb, sk);
 
 	if (nlk->dump_done_errno > 0) {
-- 
2.35.1

[PATCH 5.10 28/86] net: stmmac: Use readl_poll_timeout_atomic() in atomic state

[Greg Kroah-Hartman]

From: Kevin Hao <haokexin@gmail.com>

[ Upstream commit 234901de2bc6847eaa0aeb4aba62c31ffb8d3ad6 ]

The init_systime() may be invoked in atomic state. We have observed the
following call trace when running "phc_ctl /dev/ptp0 set" on a Intel
Agilex board.
  BUG: sleeping function called from invalid context at drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c:74
  in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 381, name: phc_ctl
  preempt_count: 1, expected: 0
  RCU nest depth: 0, expected: 0
  Preemption disabled at:
  [<ffff80000892ef78>] stmmac_set_time+0x34/0x8c
  CPU: 2 PID: 381 Comm: phc_ctl Not tainted 5.18.0-rc2-next-20220414-yocto-standard+ #567
  Hardware name: SoCFPGA Agilex SoCDK (DT)
  Call trace:
   dump_backtrace.part.0+0xc4/0xd0
   show_stack+0x24/0x40
   dump_stack_lvl+0x7c/0xa0
   dump_stack+0x18/0x34
   __might_resched+0x154/0x1c0
   __might_sleep+0x58/0x90
   init_systime+0x78/0x120
   stmmac_set_time+0x64/0x8c
   ptp_clock_settime+0x60/0x9c
   pc_clock_settime+0x6c/0xc0
   __arm64_sys_clock_settime+0x88/0xf0
   invoke_syscall+0x5c/0x130
   el0_svc_common.constprop.0+0x4c/0x100
   do_el0_svc+0x7c/0xa0
   el0_svc+0x58/0xcc
   el0t_64_sync_handler+0xa4/0x130
   el0t_64_sync+0x18c/0x190

So we should use readl_poll_timeout_atomic() here instead of
readl_poll_timeout().

Also adjust the delay time to 10us to fix a "__bad_udelay" build error
reported by "kernel test robot <lkp@intel.com>". I have tested this on
Intel Agilex and NXP S32G boards, there is no delay needed at all.
So the 10us delay should be long enough for most cases.

Fixes: ff8ed737860e ("net: stmmac: use readl_poll_timeout() function in init_systime()")
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
index 07b1b8374cd2..53efcc9c40e2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
@@ -68,9 +68,9 @@ static int init_systime(void __iomem *ioaddr, u32 sec, u32 nsec)
 	writel(value, ioaddr + PTP_TCR);
 
 	/* wait for present system time initialize to complete */
-	return readl_poll_timeout(ioaddr + PTP_TCR, value,
+	return readl_poll_timeout_atomic(ioaddr + PTP_TCR, value,
 				 !(value & PTP_TCR_TSINIT),
-				 10000, 100000);
+				 10, 100000);
 }
 
 static int config_addend(void __iomem *ioaddr, u32 addend)
-- 
2.35.1

[PATCH 5.10 29/86] dmaengine: idxd: add RO check for wq max_batch_size write

[Greg Kroah-Hartman]

From: Dave Jiang <dave.jiang@intel.com>

[ Upstream commit 66903461ffed0b66fc3e0200082d4e09365aacdc ]

Block wq_max_batch_size_store() when the device is configured as read-only
and not configurable.

Fixes: e7184b159dd3 ("dmaengine: idxd: add support for configurable max wq batch size")
Reported-by: Bernice Zhang <bernice.zhang@intel.com>
Tested-by: Bernice Zhang <bernice.zhang@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/164971493551.2201159.1942042593642155209.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/dma/idxd/sysfs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 7b41cdff1a2c..5bf4b4be64e4 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -1132,6 +1132,9 @@ static ssize_t wq_max_batch_size_store(struct device *dev, struct device_attribu
 	u64 batch_size;
 	int rc;
 
+	if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
+		return -EPERM;
+
 	if (wq->state != IDXD_WQ_DISABLED)
 		return -EPERM;
 
-- 
2.35.1

[PATCH 5.10 30/86] dmaengine: idxd: add RO check for wq max_transfer_size write

[Greg Kroah-Hartman]

From: Dave Jiang <dave.jiang@intel.com>

[ Upstream commit 505a2d1032ae656b0a8c736be110255503941cde ]

Block wq_max_transfer_size_store() when the device is configured as
read-only and not configurable.

Fixes: d7aad5550eca ("dmaengine: idxd: add support for configurable max wq xfer size")
Reported-by: Bernice Zhang <bernice.zhang@intel.com>
Tested-by: Bernice Zhang <bernice.zhang@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/164971488154.2200913.10706665404118545941.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/dma/idxd/sysfs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 5bf4b4be64e4..51af0dfc3c63 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -1098,6 +1098,9 @@ static ssize_t wq_max_transfer_size_store(struct device *dev, struct device_attr
 	u64 xfer_size;
 	int rc;
 
+	if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
+		return -EPERM;
+
 	if (wq->state != IDXD_WQ_DISABLED)
 		return -EPERM;
 
-- 
2.35.1

[PATCH 5.10 31/86] selftests: mlxsw: vxlan_flooding: Prevent flooding of unwanted packets

[Greg Kroah-Hartman]

From: Ido Schimmel <idosch@nvidia.com>

[ Upstream commit 044011fdf162c5dd61c02841930c8f438a9adadb ]

The test verifies that packets are correctly flooded by the bridge and
the VXLAN device by matching on the encapsulated packets at the other
end. However, if packets other than those generated by the test also
ingress the bridge (e.g., MLD packets), they will be flooded as well and
interfere with the expected count.

Make the test more robust by making sure that only the packets generated
by the test can ingress the bridge. Drop all the rest using tc filters
on the egress of 'br0' and 'h1'.

In the software data path, the problem can be solved by matching on the
inner destination MAC or dropping unwanted packets at the egress of the
VXLAN device, but this is not currently supported by mlxsw.

Fixes: 94d302deae25 ("selftests: mlxsw: Add a test for VxLAN flooding")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../drivers/net/mlxsw/vxlan_flooding.sh         | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/tools/testing/selftests/drivers/net/mlxsw/vxlan_flooding.sh b/tools/testing/selftests/drivers/net/mlxsw/vxlan_flooding.sh
index fedcb7b35af9..af5ea50ed5c0 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/vxlan_flooding.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/vxlan_flooding.sh
@@ -172,6 +172,17 @@ flooding_filters_add()
 	local lsb
 	local i
 
+	# Prevent unwanted packets from entering the bridge and interfering
+	# with the test.
+	tc qdisc add dev br0 clsact
+	tc filter add dev br0 egress protocol all pref 1 handle 1 \
+		matchall skip_hw action drop
+	tc qdisc add dev $h1 clsact
+	tc filter add dev $h1 egress protocol all pref 1 handle 1 \
+		flower skip_hw dst_mac de:ad:be:ef:13:37 action pass
+	tc filter add dev $h1 egress protocol all pref 2 handle 2 \
+		matchall skip_hw action drop
+
 	tc qdisc add dev $rp2 clsact
 
 	for i in $(eval echo {1..$num_remotes}); do
@@ -194,6 +205,12 @@ flooding_filters_del()
 	done
 
 	tc qdisc del dev $rp2 clsact
+
+	tc filter del dev $h1 egress protocol all pref 2 handle 2 matchall
+	tc filter del dev $h1 egress protocol all pref 1 handle 1 flower
+	tc qdisc del dev $h1 clsact
+	tc filter del dev br0 egress protocol all pref 1 handle 1 matchall
+	tc qdisc del dev br0 clsact
 }
 
 flooding_check_packets()
-- 
2.35.1

[PATCH 5.10 32/86] arm64/mm: Remove [PUD|PMD]_TABLE_BIT from [pud|pmd]_bad()

[Greg Kroah-Hartman]

From: Anshuman Khandual <anshuman.khandual@arm.com>

[ Upstream commit e377ab82311af95c99648c6424a6b888a0ccb102 ]

Semantics wise, [pud|pmd]_bad() have always implied that a given [PUD|PMD]
entry does not have a pointer to the next level page table. This had been
made clear in the commit a1c76574f345 ("arm64: mm: use *_sect to check for
section maps"). Hence explicitly check for a table entry rather than just
testing a single bit. This basically redefines [pud|pmd]_bad() in terms of
[pud|pmd]_table() making the semantics clear.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/1620644871-26280-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/include/asm/pgtable.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index f3a70dc7c594..9cf8e304bb56 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -512,13 +512,12 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 
 #define pmd_none(pmd)		(!pmd_val(pmd))
 
-#define pmd_bad(pmd)		(!(pmd_val(pmd) & PMD_TABLE_BIT))
-
 #define pmd_table(pmd)		((pmd_val(pmd) & PMD_TYPE_MASK) == \
 				 PMD_TYPE_TABLE)
 #define pmd_sect(pmd)		((pmd_val(pmd) & PMD_TYPE_MASK) == \
 				 PMD_TYPE_SECT)
 #define pmd_leaf(pmd)		pmd_sect(pmd)
+#define pmd_bad(pmd)		(!pmd_table(pmd))
 
 #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3
 static inline bool pud_sect(pud_t pud) { return false; }
@@ -602,7 +601,7 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 	pr_err("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
 
 #define pud_none(pud)		(!pud_val(pud))
-#define pud_bad(pud)		(!(pud_val(pud) & PUD_TABLE_BIT))
+#define pud_bad(pud)		(!pud_table(pud))
 #define pud_present(pud)	pte_present(pud_pte(pud))
 #define pud_leaf(pud)		pud_sect(pud)
 #define pud_valid(pud)		pte_valid(pud_pte(pud))
-- 
2.35.1




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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH 5.10 32/86] arm64/mm: Remove [PUD|PMD]_TABLE_BIT from [pud|pmd]_bad()

[Greg Kroah-Hartman]

From: Anshuman Khandual <anshuman.khandual@arm.com>

[ Upstream commit e377ab82311af95c99648c6424a6b888a0ccb102 ]

Semantics wise, [pud|pmd]_bad() have always implied that a given [PUD|PMD]
entry does not have a pointer to the next level page table. This had been
made clear in the commit a1c76574f345 ("arm64: mm: use *_sect to check for
section maps"). Hence explicitly check for a table entry rather than just
testing a single bit. This basically redefines [pud|pmd]_bad() in terms of
[pud|pmd]_table() making the semantics clear.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/1620644871-26280-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/include/asm/pgtable.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index f3a70dc7c594..9cf8e304bb56 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -512,13 +512,12 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 
 #define pmd_none(pmd)		(!pmd_val(pmd))
 
-#define pmd_bad(pmd)		(!(pmd_val(pmd) & PMD_TABLE_BIT))
-
 #define pmd_table(pmd)		((pmd_val(pmd) & PMD_TYPE_MASK) == \
 				 PMD_TYPE_TABLE)
 #define pmd_sect(pmd)		((pmd_val(pmd) & PMD_TYPE_MASK) == \
 				 PMD_TYPE_SECT)
 #define pmd_leaf(pmd)		pmd_sect(pmd)
+#define pmd_bad(pmd)		(!pmd_table(pmd))
 
 #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3
 static inline bool pud_sect(pud_t pud) { return false; }
@@ -602,7 +601,7 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 	pr_err("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
 
 #define pud_none(pud)		(!pud_val(pud))
-#define pud_bad(pud)		(!(pud_val(pud) & PUD_TABLE_BIT))
+#define pud_bad(pud)		(!pud_table(pud))
 #define pud_present(pud)	pte_present(pud_pte(pud))
 #define pud_leaf(pud)		pud_sect(pud)
 #define pud_valid(pud)		pte_valid(pud_pte(pud))
-- 
2.35.1

[PATCH 5.10 33/86] arm64: mm: fix p?d_leaf()

[Greg Kroah-Hartman]

From: Muchun Song <songmuchun@bytedance.com>

[ Upstream commit 23bc8f69f0eceecbb87c3801d2e48827d2dca92b ]

The pmd_leaf() is used to test a leaf mapped PMD, however, it misses
the PROT_NONE mapped PMD on arm64.  Fix it.  A real world issue [1]
caused by this was reported by Qian Cai. Also fix pud_leaf().

Link: https://patchwork.kernel.org/comment/24798260/ [1]
Fixes: 8aa82df3c123 ("arm64: mm: add p?d_leaf() definitions")
Reported-by: Qian Cai <quic_qiancai@quicinc.com>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Link: https://lore.kernel.org/r/20220422060033.48711-1-songmuchun@bytedance.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/include/asm/pgtable.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 9cf8e304bb56..3f74db7b0a31 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -516,7 +516,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 				 PMD_TYPE_TABLE)
 #define pmd_sect(pmd)		((pmd_val(pmd) & PMD_TYPE_MASK) == \
 				 PMD_TYPE_SECT)
-#define pmd_leaf(pmd)		pmd_sect(pmd)
+#define pmd_leaf(pmd)		(pmd_present(pmd) && !pmd_table(pmd))
 #define pmd_bad(pmd)		(!pmd_table(pmd))
 
 #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3
@@ -603,7 +603,7 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 #define pud_none(pud)		(!pud_val(pud))
 #define pud_bad(pud)		(!pud_table(pud))
 #define pud_present(pud)	pte_present(pud_pte(pud))
-#define pud_leaf(pud)		pud_sect(pud)
+#define pud_leaf(pud)		(pud_present(pud) && !pud_table(pud))
 #define pud_valid(pud)		pte_valid(pud_pte(pud))
 
 static inline void set_pud(pud_t *pudp, pud_t pud)
-- 
2.35.1

[PATCH 5.10 34/86] ARM: vexpress/spc: Avoid negative array index when !SMP

[Greg Kroah-Hartman]

From: Kees Cook <keescook@chromium.org>

[ Upstream commit b3f1dd52c991d79118f35e6d1bf4d7cb09882e38 ]

When building multi_v7_defconfig+CONFIG_SMP=n, -Warray-bounds exposes
a couple negative array index accesses:

arch/arm/mach-vexpress/spc.c: In function 've_spc_clk_init':
arch/arm/mach-vexpress/spc.c:583:21: warning: array subscript -1 is below array bounds of 'bool[2]' {aka '_Bool[2]'} [-Warray-bounds]
  583 |   if (init_opp_table[cluster])
      |       ~~~~~~~~~~~~~~^~~~~~~~~
arch/arm/mach-vexpress/spc.c:556:7: note: while referencing 'init_opp_table'
  556 |  bool init_opp_table[MAX_CLUSTERS] = { false };
      |       ^~~~~~~~~~~~~~
arch/arm/mach-vexpress/spc.c:592:18: warning: array subscript -1 is below array bounds of 'bool[2]' {aka '_Bool[2]'} [-Warray-bounds]
  592 |    init_opp_table[cluster] = true;
      |    ~~~~~~~~~~~~~~^~~~~~~~~
arch/arm/mach-vexpress/spc.c:556:7: note: while referencing 'init_opp_table'
  556 |  bool init_opp_table[MAX_CLUSTERS] = { false };
      |       ^~~~~~~~~~~~~~

Skip this logic when built !SMP.

Link: https://lore.kernel.org/r/20220331190443.851661-1-keescook@chromium.org
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/mach-vexpress/spc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c
index 1da11bdb1dfb..1c6500c4e6a1 100644
--- a/arch/arm/mach-vexpress/spc.c
+++ b/arch/arm/mach-vexpress/spc.c
@@ -580,7 +580,7 @@ static int __init ve_spc_clk_init(void)
 		}
 
 		cluster = topology_physical_package_id(cpu_dev->id);
-		if (init_opp_table[cluster])
+		if (cluster < 0 || init_opp_table[cluster])
 			continue;
 
 		if (ve_init_opp_table(cpu_dev))
-- 
2.35.1




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[PATCH 5.10 34/86] ARM: vexpress/spc: Avoid negative array index when !SMP

[Greg Kroah-Hartman]

From: Kees Cook <keescook@chromium.org>

[ Upstream commit b3f1dd52c991d79118f35e6d1bf4d7cb09882e38 ]

When building multi_v7_defconfig+CONFIG_SMP=n, -Warray-bounds exposes
a couple negative array index accesses:

arch/arm/mach-vexpress/spc.c: In function 've_spc_clk_init':
arch/arm/mach-vexpress/spc.c:583:21: warning: array subscript -1 is below array bounds of 'bool[2]' {aka '_Bool[2]'} [-Warray-bounds]
  583 |   if (init_opp_table[cluster])
      |       ~~~~~~~~~~~~~~^~~~~~~~~
arch/arm/mach-vexpress/spc.c:556:7: note: while referencing 'init_opp_table'
  556 |  bool init_opp_table[MAX_CLUSTERS] = { false };
      |       ^~~~~~~~~~~~~~
arch/arm/mach-vexpress/spc.c:592:18: warning: array subscript -1 is below array bounds of 'bool[2]' {aka '_Bool[2]'} [-Warray-bounds]
  592 |    init_opp_table[cluster] = true;
      |    ~~~~~~~~~~~~~~^~~~~~~~~
arch/arm/mach-vexpress/spc.c:556:7: note: while referencing 'init_opp_table'
  556 |  bool init_opp_table[MAX_CLUSTERS] = { false };
      |       ^~~~~~~~~~~~~~

Skip this logic when built !SMP.

Link: https://lore.kernel.org/r/20220331190443.851661-1-keescook@chromium.org
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/mach-vexpress/spc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c
index 1da11bdb1dfb..1c6500c4e6a1 100644
--- a/arch/arm/mach-vexpress/spc.c
+++ b/arch/arm/mach-vexpress/spc.c
@@ -580,7 +580,7 @@ static int __init ve_spc_clk_init(void)
 		}
 
 		cluster = topology_physical_package_id(cpu_dev->id);
-		if (init_opp_table[cluster])
+		if (cluster < 0 || init_opp_table[cluster])
 			continue;
 
 		if (ve_init_opp_table(cpu_dev))
-- 
2.35.1

[PATCH 5.10 35/86] reset: tegra-bpmp: Restore Handle errors in BPMP response

[Greg Kroah-Hartman]

From: Sameer Pujar <spujar@nvidia.com>

[ Upstream commit d1da1052ffad63aa5181b69f20a6952e31f339c2 ]

This reverts following commit 69125b4b9440 ("reset: tegra-bpmp: Revert
Handle errors in BPMP response").

The Tegra194 HDA reset failure is fixed by commit d278dc9151a0 ("ALSA:
hda/tegra: Fix Tegra194 HDA reset failure"). The temporary revert of
original commit c045ceb5a145 ("reset: tegra-bpmp: Handle errors in BPMP
response") can be removed now.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/1641995806-15245-1-git-send-email-spujar@nvidia.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/reset/tegra/reset-bpmp.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/reset/tegra/reset-bpmp.c b/drivers/reset/tegra/reset-bpmp.c
index 24d3395964cc..4c5bba52b105 100644
--- a/drivers/reset/tegra/reset-bpmp.c
+++ b/drivers/reset/tegra/reset-bpmp.c
@@ -20,6 +20,7 @@ static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc,
 	struct tegra_bpmp *bpmp = to_tegra_bpmp(rstc);
 	struct mrq_reset_request request;
 	struct tegra_bpmp_message msg;
+	int err;
 
 	memset(&request, 0, sizeof(request));
 	request.cmd = command;
@@ -30,7 +31,13 @@ static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc,
 	msg.tx.data = &request;
 	msg.tx.size = sizeof(request);
 
-	return tegra_bpmp_transfer(bpmp, &msg);
+	err = tegra_bpmp_transfer(bpmp, &msg);
+	if (err)
+		return err;
+	if (msg.rx.ret)
+		return -EINVAL;
+
+	return 0;
 }
 
 static int tegra_bpmp_reset_module(struct reset_controller_dev *rstc,
-- 
2.35.1

[PATCH 5.10 36/86] platform/x86: samsung-laptop: Fix an unsigned comparison which can never be negative

[Greg Kroah-Hartman]

From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>

[ Upstream commit 0284d4d1be753f648f28b77bdfbe6a959212af5c ]

Eliminate the follow smatch warnings:

drivers/platform/x86/samsung-laptop.c:1124 kbd_led_set() warn: unsigned
'value' is never less than zero.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220322061830.105579-1-jiapeng.chong@linux.alibaba.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/platform/x86/samsung-laptop.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index d5cec6e35bb8..0e456c39a603 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -1121,8 +1121,6 @@ static void kbd_led_set(struct led_classdev *led_cdev,
 
 	if (value > samsung->kbd_led.max_brightness)
 		value = samsung->kbd_led.max_brightness;
-	else if (value < 0)
-		value = 0;
 
 	samsung->kbd_led_wk = value;
 	queue_work(samsung->led_workqueue, &samsung->kbd_led_work);
-- 
2.35.1

[PATCH 5.10 37/86] ALSA: usb-audio: Fix undefined behavior due to shift overflowing the constant

[Greg Kroah-Hartman]

From: Borislav Petkov <bp@suse.de>

[ Upstream commit 1ef8715975de8bd481abbd0839ed4f49d9e5b0ff ]

Fix:

  sound/usb/midi.c: In function ‘snd_usbmidi_out_endpoint_create’:
  sound/usb/midi.c:1389:2: error: case label does not reduce to an integer constant
    case USB_ID(0xfc08, 0x0101): /* Unknown vendor Cable */
    ^~~~

See https://lore.kernel.org/r/YkwQ6%2BtIH8GQpuct@zn.tnic for the gory
details as to why it triggers with older gccs only.

[ A slight correction with parentheses around the argument by tiwai ]

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220405151517.29753-3-bp@alien8.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/usbaudio.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index e54a98f46549..d8e31ee03b9d 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -8,7 +8,7 @@
  */
 
 /* handling of USB vendor/product ID pairs as 32-bit numbers */
-#define USB_ID(vendor, product) (((vendor) << 16) | (product))
+#define USB_ID(vendor, product) (((unsigned int)(vendor) << 16) | (product))
 #define USB_ID_VENDOR(id) ((id) >> 16)
 #define USB_ID_PRODUCT(id) ((u16)(id))
 
-- 
2.35.1

[PATCH 5.10 38/86] arm64: dts: imx: Fix imx8*-var-som touchscreen property sizes

[Greg Kroah-Hartman]

From: Rob Herring <robh@kernel.org>

[ Upstream commit 1bc12d301594eafde0a8529d28d459af81053b3a ]

The common touchscreen properties are all 32-bit, not 16-bit. These
properties must not be too important as they are all ignored in case of an
error reading them.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/Yk3moe6Hz8ELM0iS@robh.at.kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi | 8 ++++----
 arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
index 49082529764f..0fac1f3f7f47 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
@@ -89,12 +89,12 @@
 		pendown-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
 
 		ti,x-min = /bits/ 16 <125>;
-		touchscreen-size-x = /bits/ 16 <4008>;
+		touchscreen-size-x = <4008>;
 		ti,y-min = /bits/ 16 <282>;
-		touchscreen-size-y = /bits/ 16 <3864>;
+		touchscreen-size-y = <3864>;
 		ti,x-plate-ohms = /bits/ 16 <180>;
-		touchscreen-max-pressure = /bits/ 16 <255>;
-		touchscreen-average-samples = /bits/ 16 <10>;
+		touchscreen-max-pressure = <255>;
+		touchscreen-average-samples = <10>;
 		ti,debounce-tol = /bits/ 16 <3>;
 		ti,debounce-rep = /bits/ 16 <1>;
 		ti,settle-delay-usec = /bits/ 16 <150>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
index 7f356edf9f91..f6287f174355 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
@@ -70,12 +70,12 @@
 		pendown-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
 
 		ti,x-min = /bits/ 16 <125>;
-		touchscreen-size-x = /bits/ 16 <4008>;
+		touchscreen-size-x = <4008>;
 		ti,y-min = /bits/ 16 <282>;
-		touchscreen-size-y = /bits/ 16 <3864>;
+		touchscreen-size-y = <3864>;
 		ti,x-plate-ohms = /bits/ 16 <180>;
-		touchscreen-max-pressure = /bits/ 16 <255>;
-		touchscreen-average-samples = /bits/ 16 <10>;
+		touchscreen-max-pressure = <255>;
+		touchscreen-average-samples = <10>;
 		ti,debounce-tol = /bits/ 16 <3>;
 		ti,debounce-rep = /bits/ 16 <1>;
 		ti,settle-delay-usec = /bits/ 16 <150>;
-- 
2.35.1

[PATCH 5.10 39/86] vxlan: fix error return code in vxlan_fdb_append

[Greg Kroah-Hartman]

From: Hongbin Wang <wh_bin@126.com>

[ Upstream commit 7cea5560bf656b84f9ed01c0cc829d4eecd0640b ]

When kmalloc and dst_cache_init failed,
should return ENOMEM rather than ENOBUFS.

Signed-off-by: Hongbin Wang <wh_bin@126.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/vxlan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 48fbdce6a70e..72d670667f64 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -710,11 +710,11 @@ static int vxlan_fdb_append(struct vxlan_fdb *f,
 
 	rd = kmalloc(sizeof(*rd), GFP_ATOMIC);
 	if (rd == NULL)
-		return -ENOBUFS;
+		return -ENOMEM;
 
 	if (dst_cache_init(&rd->dst_cache, GFP_ATOMIC)) {
 		kfree(rd);
-		return -ENOBUFS;
+		return -ENOMEM;
 	}
 
 	rd->remote_ip = *ip;
-- 
2.35.1

[PATCH 5.10 40/86] cifs: Check the IOCB_DIRECT flag, not O_DIRECT

[Greg Kroah-Hartman]

From: David Howells <dhowells@redhat.com>

[ Upstream commit 994fd530a512597ffcd713b0f6d5bc916c5698f0 ]

Use the IOCB_DIRECT indicator flag on the I/O context rather than checking to
see if the file was opened O_DIRECT.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/cifsfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index aa5a4d759ca2..370188b2a55d 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -898,7 +898,7 @@ cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter)
 	ssize_t rc;
 	struct inode *inode = file_inode(iocb->ki_filp);
 
-	if (iocb->ki_filp->f_flags & O_DIRECT)
+	if (iocb->ki_flags & IOCB_DIRECT)
 		return cifs_user_readv(iocb, iter);
 
 	rc = cifs_revalidate_mapping(inode);
-- 
2.35.1

[PATCH 5.10 41/86] net: atlantic: Avoid out-of-bounds indexing

[Greg Kroah-Hartman]

From: Kai-Heng Feng <kai.heng.feng@canonical.com>

[ Upstream commit 8d3a6c37d50d5a0504c126c932cc749e6dd9c78f ]

UBSAN warnings are observed on atlantic driver:
[ 294.432996] UBSAN: array-index-out-of-bounds in /build/linux-Qow4fL/linux-5.15.0/drivers/net/ethernet/aquantia/atlantic/aq_nic.c:484:48
[ 294.433695] index 8 is out of range for type 'aq_vec_s *[8]'

The ring is dereferenced right before breaking out the loop, to prevent
that from happening, only use the index in the loop to fix the issue.

BugLink: https://bugs.launchpad.net/bugs/1958770
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Igor Russkikh <irusskikh@marvell.com>
Link: https://lore.kernel.org/r/20220408022204.16815-1-kai.heng.feng@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/ethernet/aquantia/atlantic/aq_nic.c   |  8 +++----
 .../net/ethernet/aquantia/atlantic/aq_vec.c   | 24 +++++++++----------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
index 0cf8ae8aeac8..2fb4126ae8d8 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -480,8 +480,8 @@ int aq_nic_start(struct aq_nic_s *self)
 	if (err < 0)
 		goto err_exit;
 
-	for (i = 0U, aq_vec = self->aq_vec[0];
-		self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
+	for (i = 0U; self->aq_vecs > i; ++i) {
+		aq_vec = self->aq_vec[i];
 		err = aq_vec_start(aq_vec);
 		if (err < 0)
 			goto err_exit;
@@ -511,8 +511,8 @@ int aq_nic_start(struct aq_nic_s *self)
 		mod_timer(&self->polling_timer, jiffies +
 			  AQ_CFG_POLLING_TIMER_INTERVAL);
 	} else {
-		for (i = 0U, aq_vec = self->aq_vec[0];
-			self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
+		for (i = 0U; self->aq_vecs > i; ++i) {
+			aq_vec = self->aq_vec[i];
 			err = aq_pci_func_alloc_irq(self, i, self->ndev->name,
 						    aq_vec_isr, aq_vec,
 						    aq_vec_get_affinity_mask(aq_vec));
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
index f4774cf051c9..6ab1f3212d24 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
@@ -43,8 +43,8 @@ static int aq_vec_poll(struct napi_struct *napi, int budget)
 	if (!self) {
 		err = -EINVAL;
 	} else {
-		for (i = 0U, ring = self->ring[0];
-			self->tx_rings > i; ++i, ring = self->ring[i]) {
+		for (i = 0U; self->tx_rings > i; ++i) {
+			ring = self->ring[i];
 			u64_stats_update_begin(&ring[AQ_VEC_RX_ID].stats.rx.syncp);
 			ring[AQ_VEC_RX_ID].stats.rx.polls++;
 			u64_stats_update_end(&ring[AQ_VEC_RX_ID].stats.rx.syncp);
@@ -182,8 +182,8 @@ int aq_vec_init(struct aq_vec_s *self, const struct aq_hw_ops *aq_hw_ops,
 	self->aq_hw_ops = aq_hw_ops;
 	self->aq_hw = aq_hw;
 
-	for (i = 0U, ring = self->ring[0];
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
+	for (i = 0U; self->tx_rings > i; ++i) {
+		ring = self->ring[i];
 		err = aq_ring_init(&ring[AQ_VEC_TX_ID], ATL_RING_TX);
 		if (err < 0)
 			goto err_exit;
@@ -224,8 +224,8 @@ int aq_vec_start(struct aq_vec_s *self)
 	unsigned int i = 0U;
 	int err = 0;
 
-	for (i = 0U, ring = self->ring[0];
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
+	for (i = 0U; self->tx_rings > i; ++i) {
+		ring = self->ring[i];
 		err = self->aq_hw_ops->hw_ring_tx_start(self->aq_hw,
 							&ring[AQ_VEC_TX_ID]);
 		if (err < 0)
@@ -248,8 +248,8 @@ void aq_vec_stop(struct aq_vec_s *self)
 	struct aq_ring_s *ring = NULL;
 	unsigned int i = 0U;
 
-	for (i = 0U, ring = self->ring[0];
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
+	for (i = 0U; self->tx_rings > i; ++i) {
+		ring = self->ring[i];
 		self->aq_hw_ops->hw_ring_tx_stop(self->aq_hw,
 						 &ring[AQ_VEC_TX_ID]);
 
@@ -268,8 +268,8 @@ void aq_vec_deinit(struct aq_vec_s *self)
 	if (!self)
 		goto err_exit;
 
-	for (i = 0U, ring = self->ring[0];
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
+	for (i = 0U; self->tx_rings > i; ++i) {
+		ring = self->ring[i];
 		aq_ring_tx_clean(&ring[AQ_VEC_TX_ID]);
 		aq_ring_rx_deinit(&ring[AQ_VEC_RX_ID]);
 	}
@@ -297,8 +297,8 @@ void aq_vec_ring_free(struct aq_vec_s *self)
 	if (!self)
 		goto err_exit;
 
-	for (i = 0U, ring = self->ring[0];
-		self->tx_rings > i; ++i, ring = self->ring[i]) {
+	for (i = 0U; self->tx_rings > i; ++i) {
+		ring = self->ring[i];
 		aq_ring_free(&ring[AQ_VEC_TX_ID]);
 		if (i < self->rx_rings)
 			aq_ring_free(&ring[AQ_VEC_RX_ID]);
-- 
2.35.1

[PATCH 5.10 42/86] mt76: Fix undefined behavior due to shift overflowing the constant

[Greg Kroah-Hartman]

From: Borislav Petkov <bp@suse.de>

[ Upstream commit dbc2b1764734857d68425468ffa8486e97ab89df ]

Fix:

  drivers/net/wireless/mediatek/mt76/mt76x2/pci.c: In function ‘mt76x2e_probe’:
  ././include/linux/compiler_types.h:352:38: error: call to ‘__compiletime_assert_946’ \
	declared with attribute error: FIELD_PREP: mask is not constant
    _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)

See https://lore.kernel.org/r/YkwQ6%2BtIH8GQpuct@zn.tnic for the gory
details as to why it triggers with older gccs only.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Cc: Ryder Lee <ryder.lee@mediatek.com>
Cc: Shayne Chen <shayne.chen@mediatek.com>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220405151517.29753-9-bp@alien8.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt76x2/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c b/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c
index ecaf85b483ac..e57e49a722dc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c
@@ -80,7 +80,7 @@ mt76x2e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9);
 
 	/* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */
-	mt76_rmw_field(dev, 0x15a0c, 0xf << 28, 0xf);
+	mt76_rmw_field(dev, 0x15a0c, 0xfU << 28, 0xf);
 
 	/* RG_SSUSB_CDR_BR_PE1D = 0x3 */
 	mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3);
-- 
2.35.1

[PATCH 5.10 43/86] brcmfmac: sdio: Fix undefined behavior due to shift overflowing the constant

[Greg Kroah-Hartman]

From: Borislav Petkov <bp@alien8.de>

[ Upstream commit 6fb3a5868b2117611f41e421e10e6a8c2a13039a ]

Fix:

  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c: In function ‘brcmf_sdio_drivestrengthinit’:
  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:3798:2: error: case label does not reduce to an integer constant
    case SDIOD_DRVSTR_KEY(BRCM_CC_43143_CHIP_ID, 17):
    ^~~~
  drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:3809:2: error: case label does not reduce to an integer constant
    case SDIOD_DRVSTR_KEY(BRCM_CC_43362_CHIP_ID, 13):
    ^~~~

See https://lore.kernel.org/r/YkwQ6%2BtIH8GQpuct@zn.tnic for the gory
details as to why it triggers with older gccs only.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Arend van Spriel <aspriel@gmail.com>
Cc: Franky Lin <franky.lin@broadcom.com>
Cc: Hante Meuleman <hante.meuleman@broadcom.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: brcm80211-dev-list.pdl@broadcom.com
Cc: netdev@vger.kernel.org
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/Ykx0iRlvtBnKqtbG@zn.tnic
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
index 6d5d5c39c635..9929e90866f0 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -557,7 +557,7 @@ enum brcmf_sdio_frmtype {
 	BRCMF_SDIO_FT_SUB,
 };
 
-#define SDIOD_DRVSTR_KEY(chip, pmu)     (((chip) << 16) | (pmu))
+#define SDIOD_DRVSTR_KEY(chip, pmu)     (((unsigned int)(chip) << 16) | (pmu))
 
 /* SDIO Pad drive strength to select value mappings */
 struct sdiod_drive_str {
-- 
2.35.1

[PATCH 5.10 44/86] dpaa_eth: Fix missing of_node_put in dpaa_get_ts_info()

[Greg Kroah-Hartman]

From: Lv Ruyi <lv.ruyi@zte.com.cn>

[ Upstream commit 1a7eb80d170c28be2928433702256fe2a0bd1e0f ]

Both of of_get_parent() and of_parse_phandle() return node pointer with
refcount incremented, use of_node_put() on it to decrease refcount
when done.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
index 1268996b7030..2f9075429c43 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
@@ -489,11 +489,15 @@ static int dpaa_get_ts_info(struct net_device *net_dev,
 	info->phc_index = -1;
 
 	fman_node = of_get_parent(mac_node);
-	if (fman_node)
+	if (fman_node) {
 		ptp_node = of_parse_phandle(fman_node, "ptimer-handle", 0);
+		of_node_put(fman_node);
+	}
 
-	if (ptp_node)
+	if (ptp_node) {
 		ptp_dev = of_find_device_by_node(ptp_node);
+		of_node_put(ptp_node);
+	}
 
 	if (ptp_dev)
 		ptp = platform_get_drvdata(ptp_dev);
-- 
2.35.1

[PATCH 5.10 45/86] drm/msm/mdp5: check the return of kzalloc()

[Greg Kroah-Hartman]

From: Xiaoke Wang <xkernel.wang@foxmail.com>

[ Upstream commit 047ae665577776b7feb11bd4f81f46627cff95e7 ]

kzalloc() is a memory allocation function which can return NULL when
some internal memory errors happen. So it is better to check it to
prevent potential wrong memory access.

Besides, since mdp5_plane_reset() is void type, so we should better
set `plane-state` to NULL after releasing it.

Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/481055/
Link: https://lore.kernel.org/r/tencent_8E2A1C78140EE1784AB2FF4B2088CC0AB908@qq.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index 83423092de2f..da0799333970 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -179,7 +179,10 @@ static void mdp5_plane_reset(struct drm_plane *plane)
 		drm_framebuffer_put(plane->state->fb);
 
 	kfree(to_mdp5_plane_state(plane->state));
+	plane->state = NULL;
 	mdp5_state = kzalloc(sizeof(*mdp5_state), GFP_KERNEL);
+	if (!mdp5_state)
+		return;
 
 	/* assign default blend parameters */
 	mdp5_state->alpha = 255;
-- 
2.35.1

[PATCH 5.10 46/86] net: macb: Restart tx only if queue pointer is lagging

[Greg Kroah-Hartman]

From: Tomas Melin <tomas.melin@vaisala.com>

[ Upstream commit 5ad7f18cd82cee8e773d40cc7a1465a526f2615c ]

commit 4298388574da ("net: macb: restart tx after tx used bit read")
added support for restarting transmission. Restarting tx does not work
in case controller asserts TXUBR interrupt and TQBP is already at the end
of the tx queue. In that situation, restarting tx will immediately cause
assertion of another TXUBR interrupt. The driver will end up in an infinite
interrupt loop which it cannot break out of.

For cases where TQBP is at the end of the tx queue, instead
only clear TX_USED interrupt. As more data gets pushed to the queue,
transmission will resume.

This issue was observed on a Xilinx Zynq-7000 based board.
During stress test of the network interface,
driver would get stuck on interrupt loop within seconds or minutes
causing CPU to stall.

Signed-off-by: Tomas Melin <tomas.melin@vaisala.com>
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220407161659.14532-1-tomas.melin@vaisala.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/cadence/macb_main.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index f29ec765d684..bd13f91efe7c 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -1531,6 +1531,7 @@ static void macb_tx_restart(struct macb_queue *queue)
 	unsigned int head = queue->tx_head;
 	unsigned int tail = queue->tx_tail;
 	struct macb *bp = queue->bp;
+	unsigned int head_idx, tbqp;
 
 	if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE)
 		queue_writel(queue, ISR, MACB_BIT(TXUBR));
@@ -1538,6 +1539,13 @@ static void macb_tx_restart(struct macb_queue *queue)
 	if (head == tail)
 		return;
 
+	tbqp = queue_readl(queue, TBQP) / macb_dma_desc_get_size(bp);
+	tbqp = macb_adj_dma_desc_idx(bp, macb_tx_ring_wrap(bp, tbqp));
+	head_idx = macb_adj_dma_desc_idx(bp, macb_tx_ring_wrap(bp, head));
+
+	if (tbqp == head_idx)
+		return;
+
 	macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART));
 }
 
-- 
2.35.1

[PATCH 5.10 47/86] scsi: qedi: Fix failed disconnect handling

[Greg Kroah-Hartman]

From: Mike Christie <michael.christie@oracle.com>

[ Upstream commit 857b06527f707f5df634b854898a191b5c1d0272 ]

We set the qedi_ep state to EP_STATE_OFLDCONN_START when the ep is
created. Then in qedi_set_path we kick off the offload work. If userspace
times out the connection and calls ep_disconnect, qedi will only flush the
offload work if the qedi_ep state has transitioned away from
EP_STATE_OFLDCONN_START. If we can't connect we will not have transitioned
state and will leave the offload work running, and we will free the qedi_ep
from under it.

This patch just has us init the work when we create the ep, then always
flush it.

Link: https://lore.kernel.org/r/20220408001314.5014-10-michael.christie@oracle.com
Tested-by: Manish Rangankar <mrangankar@marvell.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Acked-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/qedi/qedi_iscsi.c | 69 +++++++++++++++++-----------------
 1 file changed, 34 insertions(+), 35 deletions(-)

diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c
index 5f7e62f19d83..3bcadb3dd40d 100644
--- a/drivers/scsi/qedi/qedi_iscsi.c
+++ b/drivers/scsi/qedi/qedi_iscsi.c
@@ -828,6 +828,37 @@ static int qedi_task_xmit(struct iscsi_task *task)
 	return qedi_iscsi_send_ioreq(task);
 }
 
+static void qedi_offload_work(struct work_struct *work)
+{
+	struct qedi_endpoint *qedi_ep =
+		container_of(work, struct qedi_endpoint, offload_work);
+	struct qedi_ctx *qedi;
+	int wait_delay = 5 * HZ;
+	int ret;
+
+	qedi = qedi_ep->qedi;
+
+	ret = qedi_iscsi_offload_conn(qedi_ep);
+	if (ret) {
+		QEDI_ERR(&qedi->dbg_ctx,
+			 "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n",
+			 qedi_ep->iscsi_cid, qedi_ep, ret);
+		qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
+		return;
+	}
+
+	ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait,
+					       (qedi_ep->state ==
+					       EP_STATE_OFLDCONN_COMPL),
+					       wait_delay);
+	if (ret <= 0 || qedi_ep->state != EP_STATE_OFLDCONN_COMPL) {
+		qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
+		QEDI_ERR(&qedi->dbg_ctx,
+			 "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n",
+			 qedi_ep->iscsi_cid, qedi_ep);
+	}
+}
+
 static struct iscsi_endpoint *
 qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 		int non_blocking)
@@ -876,6 +907,7 @@ qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 	}
 	qedi_ep = ep->dd_data;
 	memset(qedi_ep, 0, sizeof(struct qedi_endpoint));
+	INIT_WORK(&qedi_ep->offload_work, qedi_offload_work);
 	qedi_ep->state = EP_STATE_IDLE;
 	qedi_ep->iscsi_cid = (u32)-1;
 	qedi_ep->qedi = qedi;
@@ -1026,12 +1058,11 @@ static void qedi_ep_disconnect(struct iscsi_endpoint *ep)
 	qedi_ep = ep->dd_data;
 	qedi = qedi_ep->qedi;
 
+	flush_work(&qedi_ep->offload_work);
+
 	if (qedi_ep->state == EP_STATE_OFLDCONN_START)
 		goto ep_exit_recover;
 
-	if (qedi_ep->state != EP_STATE_OFLDCONN_NONE)
-		flush_work(&qedi_ep->offload_work);
-
 	if (qedi_ep->conn) {
 		qedi_conn = qedi_ep->conn;
 		conn = qedi_conn->cls_conn->dd_data;
@@ -1196,37 +1227,6 @@ static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid)
 	return rc;
 }
 
-static void qedi_offload_work(struct work_struct *work)
-{
-	struct qedi_endpoint *qedi_ep =
-		container_of(work, struct qedi_endpoint, offload_work);
-	struct qedi_ctx *qedi;
-	int wait_delay = 5 * HZ;
-	int ret;
-
-	qedi = qedi_ep->qedi;
-
-	ret = qedi_iscsi_offload_conn(qedi_ep);
-	if (ret) {
-		QEDI_ERR(&qedi->dbg_ctx,
-			 "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n",
-			 qedi_ep->iscsi_cid, qedi_ep, ret);
-		qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
-		return;
-	}
-
-	ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait,
-					       (qedi_ep->state ==
-					       EP_STATE_OFLDCONN_COMPL),
-					       wait_delay);
-	if ((ret <= 0) || (qedi_ep->state != EP_STATE_OFLDCONN_COMPL)) {
-		qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
-		QEDI_ERR(&qedi->dbg_ctx,
-			 "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n",
-			 qedi_ep->iscsi_cid, qedi_ep);
-	}
-}
-
 static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data)
 {
 	struct qedi_ctx *qedi;
@@ -1342,7 +1342,6 @@ static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data)
 			  qedi_ep->dst_addr, qedi_ep->dst_port);
 	}
 
-	INIT_WORK(&qedi_ep->offload_work, qedi_offload_work);
 	queue_work(qedi->offload_thread, &qedi_ep->offload_work);
 
 	ret = 0;
-- 
2.35.1

[PATCH 5.10 48/86] stat: fix inconsistency between struct stat and struct compat_stat

[Greg Kroah-Hartman]

From: Mikulas Patocka <mpatocka@redhat.com>

[ Upstream commit 932aba1e169090357a77af18850a10c256b50819 ]

struct stat (defined in arch/x86/include/uapi/asm/stat.h) has 32-bit
st_dev and st_rdev; struct compat_stat (defined in
arch/x86/include/asm/compat.h) has 16-bit st_dev and st_rdev followed by
a 16-bit padding.

This patch fixes struct compat_stat to match struct stat.

[ Historical note: the old x86 'struct stat' did have that 16-bit field
  that the compat layer had kept around, but it was changes back in 2003
  by "struct stat - support larger dev_t":

    https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git/commit/?id=e95b2065677fe32512a597a79db94b77b90c968d

  and back in those days, the x86_64 port was still new, and separate
  from the i386 code, and had already picked up the old version with a
  16-bit st_dev field ]

Note that we can't change compat_dev_t because it is used by
compat_loop_info.

Also, if the st_dev and st_rdev values are 32-bit, we don't have to use
old_valid_dev to test if the value fits into them.  This fixes
-EOVERFLOW on filesystems that are on NVMe because NVMe uses the major
number 259.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/include/asm/compat.h |  6 ++----
 fs/stat.c                     | 19 ++++++++++---------
 2 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
index 0e327a01f50f..46a067bd7e0b 100644
--- a/arch/x86/include/asm/compat.h
+++ b/arch/x86/include/asm/compat.h
@@ -29,15 +29,13 @@ typedef u32		compat_caddr_t;
 typedef __kernel_fsid_t	compat_fsid_t;
 
 struct compat_stat {
-	compat_dev_t	st_dev;
-	u16		__pad1;
+	u32		st_dev;
 	compat_ino_t	st_ino;
 	compat_mode_t	st_mode;
 	compat_nlink_t	st_nlink;
 	__compat_uid_t	st_uid;
 	__compat_gid_t	st_gid;
-	compat_dev_t	st_rdev;
-	u16		__pad2;
+	u32		st_rdev;
 	u32		st_size;
 	u32		st_blksize;
 	u32		st_blocks;
diff --git a/fs/stat.c b/fs/stat.c
index 1196af4d1ea0..04550c0ba540 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -306,9 +306,6 @@ SYSCALL_DEFINE2(fstat, unsigned int, fd, struct __old_kernel_stat __user *, stat
 #  define choose_32_64(a,b) b
 #endif
 
-#define valid_dev(x)  choose_32_64(old_valid_dev(x),true)
-#define encode_dev(x) choose_32_64(old_encode_dev,new_encode_dev)(x)
-
 #ifndef INIT_STRUCT_STAT_PADDING
 #  define INIT_STRUCT_STAT_PADDING(st) memset(&st, 0, sizeof(st))
 #endif
@@ -317,7 +314,9 @@ static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
 {
 	struct stat tmp;
 
-	if (!valid_dev(stat->dev) || !valid_dev(stat->rdev))
+	if (sizeof(tmp.st_dev) < 4 && !old_valid_dev(stat->dev))
+		return -EOVERFLOW;
+	if (sizeof(tmp.st_rdev) < 4 && !old_valid_dev(stat->rdev))
 		return -EOVERFLOW;
 #if BITS_PER_LONG == 32
 	if (stat->size > MAX_NON_LFS)
@@ -325,7 +324,7 @@ static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
 #endif
 
 	INIT_STRUCT_STAT_PADDING(tmp);
-	tmp.st_dev = encode_dev(stat->dev);
+	tmp.st_dev = new_encode_dev(stat->dev);
 	tmp.st_ino = stat->ino;
 	if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
 		return -EOVERFLOW;
@@ -335,7 +334,7 @@ static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
 		return -EOVERFLOW;
 	SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
 	SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
-	tmp.st_rdev = encode_dev(stat->rdev);
+	tmp.st_rdev = new_encode_dev(stat->rdev);
 	tmp.st_size = stat->size;
 	tmp.st_atime = stat->atime.tv_sec;
 	tmp.st_mtime = stat->mtime.tv_sec;
@@ -616,11 +615,13 @@ static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
 {
 	struct compat_stat tmp;
 
-	if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
+	if (sizeof(tmp.st_dev) < 4 && !old_valid_dev(stat->dev))
+		return -EOVERFLOW;
+	if (sizeof(tmp.st_rdev) < 4 && !old_valid_dev(stat->rdev))
 		return -EOVERFLOW;
 
 	memset(&tmp, 0, sizeof(tmp));
-	tmp.st_dev = old_encode_dev(stat->dev);
+	tmp.st_dev = new_encode_dev(stat->dev);
 	tmp.st_ino = stat->ino;
 	if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
 		return -EOVERFLOW;
@@ -630,7 +631,7 @@ static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
 		return -EOVERFLOW;
 	SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
 	SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
-	tmp.st_rdev = old_encode_dev(stat->rdev);
+	tmp.st_rdev = new_encode_dev(stat->rdev);
 	if ((u64) stat->size > MAX_NON_LFS)
 		return -EOVERFLOW;
 	tmp.st_size = stat->size;
-- 
2.35.1

[PATCH 5.10 49/86] nvme: add a quirk to disable namespace identifiers

[Greg Kroah-Hartman]

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit 00ff400e6deee00f7b15e200205b2708b63b8cf6 ]

Add a quirk to disable using and exporting namespace identifiers for
controllers where they are broken beyond repair.

The most directly visible problem with non-unique namespace identifiers
is that they break the /dev/disk/by-id/ links, with the link for a
supposedly unique identifier now pointing to one of multiple possible
namespaces that share the same ID, and a somewhat random selection of
which one actually shows up.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvme/host/core.c | 24 ++++++++++++++++++------
 drivers/nvme/host/nvme.h |  5 +++++
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 853b9a24f744..ad4f1cfbad2e 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1270,6 +1270,8 @@ static int nvme_process_ns_desc(struct nvme_ctrl *ctrl, struct nvme_ns_ids *ids,
 				 warn_str, cur->nidl);
 			return -1;
 		}
+		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)
+			return NVME_NIDT_EUI64_LEN;
 		memcpy(ids->eui64, data + sizeof(*cur), NVME_NIDT_EUI64_LEN);
 		return NVME_NIDT_EUI64_LEN;
 	case NVME_NIDT_NGUID:
@@ -1278,6 +1280,8 @@ static int nvme_process_ns_desc(struct nvme_ctrl *ctrl, struct nvme_ns_ids *ids,
 				 warn_str, cur->nidl);
 			return -1;
 		}
+		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)
+			return NVME_NIDT_NGUID_LEN;
 		memcpy(ids->nguid, data + sizeof(*cur), NVME_NIDT_NGUID_LEN);
 		return NVME_NIDT_NGUID_LEN;
 	case NVME_NIDT_UUID:
@@ -1286,6 +1290,8 @@ static int nvme_process_ns_desc(struct nvme_ctrl *ctrl, struct nvme_ns_ids *ids,
 				 warn_str, cur->nidl);
 			return -1;
 		}
+		if (ctrl->quirks & NVME_QUIRK_BOGUS_NID)
+			return NVME_NIDT_UUID_LEN;
 		uuid_copy(&ids->uuid, data + sizeof(*cur));
 		return NVME_NIDT_UUID_LEN;
 	case NVME_NIDT_CSI:
@@ -1381,12 +1387,18 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl, unsigned nsid,
 	if ((*id)->ncap == 0) /* namespace not allocated or attached */
 		goto out_free_id;
 
-	if (ctrl->vs >= NVME_VS(1, 1, 0) &&
-	    !memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
-		memcpy(ids->eui64, (*id)->eui64, sizeof(ids->eui64));
-	if (ctrl->vs >= NVME_VS(1, 2, 0) &&
-	    !memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
-		memcpy(ids->nguid, (*id)->nguid, sizeof(ids->nguid));
+
+	if (ctrl->quirks & NVME_QUIRK_BOGUS_NID) {
+		dev_info(ctrl->device,
+			 "Ignoring bogus Namespace Identifiers\n");
+	} else {
+		if (ctrl->vs >= NVME_VS(1, 1, 0) &&
+		    !memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
+			memcpy(ids->eui64, (*id)->eui64, sizeof(ids->eui64));
+		if (ctrl->vs >= NVME_VS(1, 2, 0) &&
+		    !memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
+			memcpy(ids->nguid, (*id)->nguid, sizeof(ids->nguid));
+	}
 
 	return 0;
 
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 5dd1dd8021ba..10e5ae3a8c0d 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -150,6 +150,11 @@ enum nvme_quirks {
 	 * encoding the generation sequence number.
 	 */
 	NVME_QUIRK_SKIP_CID_GEN			= (1 << 17),
+
+	/*
+	 * Reports garbage in the namespace identifiers (eui64, nguid, uuid).
+	 */
+	NVME_QUIRK_BOGUS_NID			= (1 << 18),
 };
 
 /*
-- 
2.35.1

[PATCH 5.10 50/86] nvme-pci: disable namespace identifiers for Qemu controllers

[Greg Kroah-Hartman]

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit 66dd346b84d79fde20832ed691a54f4881eac20d ]

Qemu unconditionally reports a UUID, which depending on the qemu version
is either all-null (which is incorrect but harmless) or contains a single
bit set for all controllers.  In addition it can also optionally report
a eui64 which needs to be manually set.  Disable namespace identifiers
for Qemu controlles entirely even if in some cases they could be set
correctly through manual intervention.

Reported-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvme/host/pci.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 97afeb898b25..6939b03a16c5 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3212,7 +3212,10 @@ static const struct pci_device_id nvme_id_table[] = {
 		.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, },
 	{ PCI_VDEVICE(INTEL, 0x5845),	/* Qemu emulated controller */
 		.driver_data = NVME_QUIRK_IDENTIFY_CNS |
-				NVME_QUIRK_DISABLE_WRITE_ZEROES, },
+				NVME_QUIRK_DISABLE_WRITE_ZEROES |
+				NVME_QUIRK_BOGUS_NID, },
+	{ PCI_VDEVICE(REDHAT, 0x0010),	/* Qemu emulated controller */
+		.driver_data = NVME_QUIRK_BOGUS_NID, },
 	{ PCI_DEVICE(0x126f, 0x2263),	/* Silicon Motion unidentified */
 		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST, },
 	{ PCI_DEVICE(0x1bb1, 0x0100),   /* Seagate Nytro Flash Storage */
-- 
2.35.1

[PATCH 5.10 51/86] EDAC/synopsys: Read the error count from the correct register

[Greg Kroah-Hartman]

From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>

commit e2932d1f6f055b2af2114c7e64a26dc1b5593d0c upstream.

Currently, the error count is read wrongly from the status register. Read
the count from the proper error count register (ERRCNT).

  [ bp: Massage. ]

Fixes: b500b4a029d5 ("EDAC, synopsys: Add ECC support for ZynqMP DDR controller")
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220414102813.4468-1-shubhrajyoti.datta@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/edac/synopsys_edac.c |   16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

--- a/drivers/edac/synopsys_edac.c
+++ b/drivers/edac/synopsys_edac.c
@@ -163,6 +163,11 @@
 #define ECC_STAT_CECNT_SHIFT		8
 #define ECC_STAT_BITNUM_MASK		0x7F
 
+/* ECC error count register definitions */
+#define ECC_ERRCNT_UECNT_MASK		0xFFFF0000
+#define ECC_ERRCNT_UECNT_SHIFT		16
+#define ECC_ERRCNT_CECNT_MASK		0xFFFF
+
 /* DDR QOS Interrupt register definitions */
 #define DDR_QOS_IRQ_STAT_OFST		0x20200
 #define DDR_QOSUE_MASK			0x4
@@ -418,15 +423,16 @@ static int zynqmp_get_error_info(struct
 	base = priv->baseaddr;
 	p = &priv->stat;
 
+	regval = readl(base + ECC_ERRCNT_OFST);
+	p->ce_cnt = regval & ECC_ERRCNT_CECNT_MASK;
+	p->ue_cnt = (regval & ECC_ERRCNT_UECNT_MASK) >> ECC_ERRCNT_UECNT_SHIFT;
+	if (!p->ce_cnt)
+		goto ue_err;
+
 	regval = readl(base + ECC_STAT_OFST);
 	if (!regval)
 		return 1;
 
-	p->ce_cnt = (regval & ECC_STAT_CECNT_MASK) >> ECC_STAT_CECNT_SHIFT;
-	p->ue_cnt = (regval & ECC_STAT_UECNT_MASK) >> ECC_STAT_UECNT_SHIFT;
-	if (!p->ce_cnt)
-		goto ue_err;
-
 	p->ceinfo.bitpos = (regval & ECC_STAT_BITNUM_MASK);
 
 	regval = readl(base + ECC_CEADDR0_OFST);

[PATCH 5.10 52/86] mm, hugetlb: allow for "high" userspace addresses

[Greg Kroah-Hartman]

From: Christophe Leroy <christophe.leroy@csgroup.eu>

commit 5f24d5a579d1eace79d505b148808a850b417d4c upstream.

This is a fix for commit f6795053dac8 ("mm: mmap: Allow for "high"
userspace addresses") for hugetlb.

This patch adds support for "high" userspace addresses that are
optionally supported on the system and have to be requested via a hint
mechanism ("high" addr parameter to mmap).

Architectures such as powerpc and x86 achieve this by making changes to
their architectural versions of hugetlb_get_unmapped_area() function.
However, arm64 uses the generic version of that function.

So take into account arch_get_mmap_base() and arch_get_mmap_end() in
hugetlb_get_unmapped_area().  To allow that, move those two macros out
of mm/mmap.c into include/linux/sched/mm.h

If these macros are not defined in architectural code then they default
to (TASK_SIZE) and (base) so should not introduce any behavioural
changes to architectures that do not define them.

For the time being, only ARM64 is affected by this change.

Catalin (ARM64) said
 "We should have fixed hugetlb_get_unmapped_area() as well when we added
  support for 52-bit VA. The reason for commit f6795053dac8 was to
  prevent normal mmap() from returning addresses above 48-bit by default
  as some user-space had hard assumptions about this.

  It's a slight ABI change if you do this for hugetlb_get_unmapped_area()
  but I doubt anyone would notice. It's more likely that the current
  behaviour would cause issues, so I'd rather have them consistent.

  Basically when arm64 gained support for 52-bit addresses we did not
  want user-space calling mmap() to suddenly get such high addresses,
  otherwise we could have inadvertently broken some programs (similar
  behaviour to x86 here). Hence we added commit f6795053dac8. But we
  missed hugetlbfs which could still get such high mmap() addresses. So
  in theory that's a potential regression that should have bee addressed
  at the same time as commit f6795053dac8 (and before arm64 enabled
  52-bit addresses)"

Link: https://lkml.kernel.org/r/ab847b6edb197bffdfe189e70fb4ac76bfe79e0d.1650033747.git.christophe.leroy@csgroup.eu
Fixes: f6795053dac8 ("mm: mmap: Allow for "high" userspace addresses")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Steve Capper <steve.capper@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org>	[5.0.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/hugetlbfs/inode.c     |    9 +++++----
 include/linux/sched/mm.h |    8 ++++++++
 mm/mmap.c                |    8 --------
 3 files changed, 13 insertions(+), 12 deletions(-)

--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -206,7 +206,7 @@ hugetlb_get_unmapped_area_bottomup(struc
 	info.flags = 0;
 	info.length = len;
 	info.low_limit = current->mm->mmap_base;
-	info.high_limit = TASK_SIZE;
+	info.high_limit = arch_get_mmap_end(addr);
 	info.align_mask = PAGE_MASK & ~huge_page_mask(h);
 	info.align_offset = 0;
 	return vm_unmapped_area(&info);
@@ -222,7 +222,7 @@ hugetlb_get_unmapped_area_topdown(struct
 	info.flags = VM_UNMAPPED_AREA_TOPDOWN;
 	info.length = len;
 	info.low_limit = max(PAGE_SIZE, mmap_min_addr);
-	info.high_limit = current->mm->mmap_base;
+	info.high_limit = arch_get_mmap_base(addr, current->mm->mmap_base);
 	info.align_mask = PAGE_MASK & ~huge_page_mask(h);
 	info.align_offset = 0;
 	addr = vm_unmapped_area(&info);
@@ -237,7 +237,7 @@ hugetlb_get_unmapped_area_topdown(struct
 		VM_BUG_ON(addr != -ENOMEM);
 		info.flags = 0;
 		info.low_limit = current->mm->mmap_base;
-		info.high_limit = TASK_SIZE;
+		info.high_limit = arch_get_mmap_end(addr);
 		addr = vm_unmapped_area(&info);
 	}
 
@@ -251,6 +251,7 @@ hugetlb_get_unmapped_area(struct file *f
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
 	struct hstate *h = hstate_file(file);
+	const unsigned long mmap_end = arch_get_mmap_end(addr);
 
 	if (len & ~huge_page_mask(h))
 		return -EINVAL;
@@ -266,7 +267,7 @@ hugetlb_get_unmapped_area(struct file *f
 	if (addr) {
 		addr = ALIGN(addr, huge_page_size(h));
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
+		if (mmap_end - len >= addr &&
 		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -106,6 +106,14 @@ static inline void mm_update_next_owner(
 #endif /* CONFIG_MEMCG */
 
 #ifdef CONFIG_MMU
+#ifndef arch_get_mmap_end
+#define arch_get_mmap_end(addr)	(TASK_SIZE)
+#endif
+
+#ifndef arch_get_mmap_base
+#define arch_get_mmap_base(addr, base) (base)
+#endif
+
 extern void arch_pick_mmap_layout(struct mm_struct *mm,
 				  struct rlimit *rlim_stack);
 extern unsigned long
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2140,14 +2140,6 @@ unsigned long vm_unmapped_area(struct vm
 	return addr;
 }
 
-#ifndef arch_get_mmap_end
-#define arch_get_mmap_end(addr)	(TASK_SIZE)
-#endif
-
-#ifndef arch_get_mmap_base
-#define arch_get_mmap_base(addr, base) (base)
-#endif
-
 /* Get an address range which is currently unmapped.
  * For shmat() with addr=0.
  *

[PATCH 5.10 53/86] oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup

[Greg Kroah-Hartman]

From: Nico Pache <npache@redhat.com>

commit e4a38402c36e42df28eb1a5394be87e6571fb48a upstream.

The pthread struct is allocated on PRIVATE|ANONYMOUS memory [1] which
can be targeted by the oom reaper.  This mapping is used to store the
futex robust list head; the kernel does not keep a copy of the robust
list and instead references a userspace address to maintain the
robustness during a process death.

A race can occur between exit_mm and the oom reaper that allows the oom
reaper to free the memory of the futex robust list before the exit path
has handled the futex death:

    CPU1                               CPU2
    --------------------------------------------------------------------
    page_fault
    do_exit "signal"
    wake_oom_reaper
                                        oom_reaper
                                        oom_reap_task_mm (invalidates mm)
    exit_mm
    exit_mm_release
    futex_exit_release
    futex_cleanup
    exit_robust_list
    get_user (EFAULT- can't access memory)

If the get_user EFAULT's, the kernel will be unable to recover the
waiters on the robust_list, leaving userspace mutexes hung indefinitely.

Delay the OOM reaper, allowing more time for the exit path to perform
the futex cleanup.

Reproducer: https://gitlab.com/jsavitz/oom_futex_reproducer

Based on a patch by Michal Hocko.

Link: https://elixir.bootlin.com/glibc/glibc-2.35/source/nptl/allocatestack.c#L370 [1]
Link: https://lkml.kernel.org/r/20220414144042.677008-1-npache@redhat.com
Fixes: 212925802454 ("mm: oom: let oom_reap_task and exit_mmap run concurrently")
Signed-off-by: Joel Savitz <jsavitz@redhat.com>
Signed-off-by: Nico Pache <npache@redhat.com>
Co-developed-by: Joel Savitz <jsavitz@redhat.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Herton R. Krzesinski <herton@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ben Segall <bsegall@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joel Savitz <jsavitz@redhat.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/sched.h |    1 
 mm/oom_kill.c         |   54 +++++++++++++++++++++++++++++++++++++-------------
 2 files changed, 41 insertions(+), 14 deletions(-)

--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1325,6 +1325,7 @@ struct task_struct {
 	int				pagefault_disabled;
 #ifdef CONFIG_MMU
 	struct task_struct		*oom_reaper_list;
+	struct timer_list		oom_reaper_timer;
 #endif
 #ifdef CONFIG_VMAP_STACK
 	struct vm_struct		*stack_vm_area;
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -633,7 +633,7 @@ done:
 	 */
 	set_bit(MMF_OOM_SKIP, &mm->flags);
 
-	/* Drop a reference taken by wake_oom_reaper */
+	/* Drop a reference taken by queue_oom_reaper */
 	put_task_struct(tsk);
 }
 
@@ -643,12 +643,12 @@ static int oom_reaper(void *unused)
 		struct task_struct *tsk = NULL;
 
 		wait_event_freezable(oom_reaper_wait, oom_reaper_list != NULL);
-		spin_lock(&oom_reaper_lock);
+		spin_lock_irq(&oom_reaper_lock);
 		if (oom_reaper_list != NULL) {
 			tsk = oom_reaper_list;
 			oom_reaper_list = tsk->oom_reaper_list;
 		}
-		spin_unlock(&oom_reaper_lock);
+		spin_unlock_irq(&oom_reaper_lock);
 
 		if (tsk)
 			oom_reap_task(tsk);
@@ -657,22 +657,48 @@ static int oom_reaper(void *unused)
 	return 0;
 }
 
-static void wake_oom_reaper(struct task_struct *tsk)
+static void wake_oom_reaper(struct timer_list *timer)
 {
-	/* mm is already queued? */
-	if (test_and_set_bit(MMF_OOM_REAP_QUEUED, &tsk->signal->oom_mm->flags))
+	struct task_struct *tsk = container_of(timer, struct task_struct,
+			oom_reaper_timer);
+	struct mm_struct *mm = tsk->signal->oom_mm;
+	unsigned long flags;
+
+	/* The victim managed to terminate on its own - see exit_mmap */
+	if (test_bit(MMF_OOM_SKIP, &mm->flags)) {
+		put_task_struct(tsk);
 		return;
+	}
 
-	get_task_struct(tsk);
-
-	spin_lock(&oom_reaper_lock);
+	spin_lock_irqsave(&oom_reaper_lock, flags);
 	tsk->oom_reaper_list = oom_reaper_list;
 	oom_reaper_list = tsk;
-	spin_unlock(&oom_reaper_lock);
+	spin_unlock_irqrestore(&oom_reaper_lock, flags);
 	trace_wake_reaper(tsk->pid);
 	wake_up(&oom_reaper_wait);
 }
 
+/*
+ * Give the OOM victim time to exit naturally before invoking the oom_reaping.
+ * The timers timeout is arbitrary... the longer it is, the longer the worst
+ * case scenario for the OOM can take. If it is too small, the oom_reaper can
+ * get in the way and release resources needed by the process exit path.
+ * e.g. The futex robust list can sit in Anon|Private memory that gets reaped
+ * before the exit path is able to wake the futex waiters.
+ */
+#define OOM_REAPER_DELAY (2*HZ)
+static void queue_oom_reaper(struct task_struct *tsk)
+{
+	/* mm is already queued? */
+	if (test_and_set_bit(MMF_OOM_REAP_QUEUED, &tsk->signal->oom_mm->flags))
+		return;
+
+	get_task_struct(tsk);
+	timer_setup(&tsk->oom_reaper_timer, wake_oom_reaper, 0);
+	tsk->oom_reaper_timer.expires = jiffies + OOM_REAPER_DELAY;
+	add_timer(&tsk->oom_reaper_timer);
+}
+
 static int __init oom_init(void)
 {
 	oom_reaper_th = kthread_run(oom_reaper, NULL, "oom_reaper");
@@ -680,7 +706,7 @@ static int __init oom_init(void)
 }
 subsys_initcall(oom_init)
 #else
-static inline void wake_oom_reaper(struct task_struct *tsk)
+static inline void queue_oom_reaper(struct task_struct *tsk)
 {
 }
 #endif /* CONFIG_MMU */
@@ -931,7 +957,7 @@ static void __oom_kill_process(struct ta
 	rcu_read_unlock();
 
 	if (can_oom_reap)
-		wake_oom_reaper(victim);
+		queue_oom_reaper(victim);
 
 	mmdrop(mm);
 	put_task_struct(victim);
@@ -967,7 +993,7 @@ static void oom_kill_process(struct oom_
 	task_lock(victim);
 	if (task_will_free_mem(victim)) {
 		mark_oom_victim(victim);
-		wake_oom_reaper(victim);
+		queue_oom_reaper(victim);
 		task_unlock(victim);
 		put_task_struct(victim);
 		return;
@@ -1065,7 +1091,7 @@ bool out_of_memory(struct oom_control *o
 	 */
 	if (task_will_free_mem(current)) {
 		mark_oom_victim(current);
-		wake_oom_reaper(current);
+		queue_oom_reaper(current);
 		return true;
 	}
 

[PATCH 5.10 54/86] mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()

[Greg Kroah-Hartman]

From: Alistair Popple <apopple@nvidia.com>

commit 319561669a59d8e9206ab311ae5433ef92fd79d1 upstream.

In some cases it is possible for mmu_interval_notifier_remove() to race
with mn_tree_inv_end() allowing it to return while the notifier data
structure is still in use.  Consider the following sequence:

  CPU0 - mn_tree_inv_end()            CPU1 - mmu_interval_notifier_remove()
  ----------------------------------- ------------------------------------
                                      spin_lock(subscriptions->lock);
                                      seq = subscriptions->invalidate_seq;
  spin_lock(subscriptions->lock);     spin_unlock(subscriptions->lock);
  subscriptions->invalidate_seq++;
                                      wait_event(invalidate_seq != seq);
                                      return;
  interval_tree_remove(interval_sub); kfree(interval_sub);
  spin_unlock(subscriptions->lock);
  wake_up_all();

As the wait_event() condition is true it will return immediately.  This
can lead to use-after-free type errors if the caller frees the data
structure containing the interval notifier subscription while it is
still on a deferred list.  Fix this by taking the appropriate lock when
reading invalidate_seq to ensure proper synchronisation.

I observed this whilst running stress testing during some development.
You do have to be pretty unlucky, but it leads to the usual problems of
use-after-free (memory corruption, kernel crash, difficult to diagnose
WARN_ON, etc).

Link: https://lkml.kernel.org/r/20220420043734.476348-1-apopple@nvidia.com
Fixes: 99cb252f5e68 ("mm/mmu_notifier: add an interval tree notifier")
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/mmu_notifier.c |   14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -1043,6 +1043,18 @@ int mmu_interval_notifier_insert_locked(
 }
 EXPORT_SYMBOL_GPL(mmu_interval_notifier_insert_locked);
 
+static bool
+mmu_interval_seq_released(struct mmu_notifier_subscriptions *subscriptions,
+			  unsigned long seq)
+{
+	bool ret;
+
+	spin_lock(&subscriptions->lock);
+	ret = subscriptions->invalidate_seq != seq;
+	spin_unlock(&subscriptions->lock);
+	return ret;
+}
+
 /**
  * mmu_interval_notifier_remove - Remove a interval notifier
  * @interval_sub: Interval subscription to unregister
@@ -1090,7 +1102,7 @@ void mmu_interval_notifier_remove(struct
 	lock_map_release(&__mmu_notifier_invalidate_range_start_map);
 	if (seq)
 		wait_event(subscriptions->wq,
-			   READ_ONCE(subscriptions->invalidate_seq) != seq);
+			   mmu_interval_seq_released(subscriptions, seq));
 
 	/* pairs with mmgrab in mmu_interval_notifier_insert() */
 	mmdrop(mm);

[PATCH 5.10 55/86] ata: pata_marvell: Check the bmdma_addr beforing reading

[Greg Kroah-Hartman]

From: Zheyu Ma <zheyuma97@gmail.com>

commit aafa9f958342db36c17ac2a7f1b841032c96feb4 upstream.

Before detecting the cable type on the dma bar, the driver should check
whether the 'bmdma_addr' is zero, which means the adapter does not
support DMA, otherwise we will get the following error:

[    5.146634] Bad IO access at port 0x1 (return inb(port))
[    5.147206] WARNING: CPU: 2 PID: 303 at lib/iomap.c:44 ioread8+0x4a/0x60
[    5.150856] RIP: 0010:ioread8+0x4a/0x60
[    5.160238] Call Trace:
[    5.160470]  <TASK>
[    5.160674]  marvell_cable_detect+0x6e/0xc0 [pata_marvell]
[    5.161728]  ata_eh_recover+0x3520/0x6cc0
[    5.168075]  ata_do_eh+0x49/0x3c0

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/ata/pata_marvell.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/ata/pata_marvell.c
+++ b/drivers/ata/pata_marvell.c
@@ -83,6 +83,8 @@ static int marvell_cable_detect(struct a
 	switch(ap->port_no)
 	{
 	case 0:
+		if (!ap->ioaddr.bmdma_addr)
+			return ATA_CBL_PATA_UNK;
 		if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
 			return ATA_CBL_PATA40;
 		return ATA_CBL_PATA80;

[PATCH 5.10 56/86] dma: at_xdmac: fix a missing check on list iterator

[Greg Kroah-Hartman]

From: Xiaomeng Tong <xiam0nd.tong@gmail.com>

commit 206680c4e46b62fd8909385e0874a36952595b85 upstream.

The bug is here:
	__func__, desc, &desc->tx_dma_desc.phys, ret, cookie, residue);

The list iterator 'desc' will point to a bogus position containing
HEAD if the list is empty or no element is found. To avoid dev_dbg()
prints a invalid address, use a new variable 'iter' as the list
iterator, while use the origin variable 'desc' as a dedicated
pointer to point to the found element.

Cc: stable@vger.kernel.org
Fixes: 82e2424635f4c ("dmaengine: xdmac: fix print warning on dma_addr_t variable")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Link: https://lore.kernel.org/r/20220327061154.4867-1-xiam0nd.tong@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/dma/at_xdmac.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -1390,7 +1390,7 @@ at_xdmac_tx_status(struct dma_chan *chan
 {
 	struct at_xdmac_chan	*atchan = to_at_xdmac_chan(chan);
 	struct at_xdmac		*atxdmac = to_at_xdmac(atchan->chan.device);
-	struct at_xdmac_desc	*desc, *_desc;
+	struct at_xdmac_desc	*desc, *_desc, *iter;
 	struct list_head	*descs_list;
 	enum dma_status		ret;
 	int			residue, retry;
@@ -1505,11 +1505,13 @@ at_xdmac_tx_status(struct dma_chan *chan
 	 * microblock.
 	 */
 	descs_list = &desc->descs_list;
-	list_for_each_entry_safe(desc, _desc, descs_list, desc_node) {
-		dwidth = at_xdmac_get_dwidth(desc->lld.mbr_cfg);
-		residue -= (desc->lld.mbr_ubc & 0xffffff) << dwidth;
-		if ((desc->lld.mbr_nda & 0xfffffffc) == cur_nda)
+	list_for_each_entry_safe(iter, _desc, descs_list, desc_node) {
+		dwidth = at_xdmac_get_dwidth(iter->lld.mbr_cfg);
+		residue -= (iter->lld.mbr_ubc & 0xffffff) << dwidth;
+		if ((iter->lld.mbr_nda & 0xfffffffc) == cur_nda) {
+			desc = iter;
 			break;
+		}
 	}
 	residue += cur_ubc << dwidth;
 

[PATCH 5.10 57/86] net: atlantic: invert deep par in pm functions, preventing null derefs

[Greg Kroah-Hartman]

From: Manuel Ullmann <labre@posteo.de>

commit cbe6c3a8f8f4315b96e46e1a1c70393c06d95a4c upstream.

This will reset deeply on freeze and thaw instead of suspend and
resume and prevent null pointer dereferences of the uninitialized ring
0 buffer while thawing.

The impact is an indefinitely hanging kernel. You can't switch
consoles after this and the only possible user interaction is SysRq.

BUG: kernel NULL pointer dereference
RIP: 0010:aq_ring_rx_fill+0xcf/0x210 [atlantic]
aq_vec_init+0x85/0xe0 [atlantic]
aq_nic_init+0xf7/0x1d0 [atlantic]
atl_resume_common+0x4f/0x100 [atlantic]
pci_pm_thaw+0x42/0xa0

resolves in aq_ring.o to

```
0000000000000ae0 <aq_ring_rx_fill>:
{
/* ... */
 baf:	48 8b 43 08          	mov    0x8(%rbx),%rax
 		buff->flags = 0U; /* buff is NULL */
```

The bug has been present since the introduction of the new pm code in
8aaa112a57c1 ("net: atlantic: refactoring pm logic") and was hidden
until 8ce84271697a ("net: atlantic: changes for multi-TC support"),
which refactored the aq_vec_{free,alloc} functions into
aq_vec_{,ring}_{free,alloc}, but is technically not wrong. The
original functions just always reinitialized the buffers on S3/S4. If
the interface is down before freezing, the bug does not occur. It does
not matter, whether the initrd contains and loads the module before
thawing.

So the fix is to invert the boolean parameter deep in all pm function
calls, which was clearly intended to be set like that.

First report was on Github [1], which you have to guess from the
resume logs in the posted dmesg snippet. Recently I posted one on
Bugzilla [2], since I did not have an AQC device so far.

#regzbot introduced: 8ce84271697a
#regzbot from: koo5 <kolman.jindrich@gmail.com>
#regzbot monitor: https://github.com/Aquantia/AQtion/issues/32

Fixes: 8aaa112a57c1 ("net: atlantic: refactoring pm logic")
Link: https://github.com/Aquantia/AQtion/issues/32 [1]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215798 [2]
Cc: stable@vger.kernel.org
Reported-by: koo5 <kolman.jindrich@gmail.com>
Signed-off-by: Manuel Ullmann <labre@posteo.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
@@ -450,22 +450,22 @@ err_exit:
 
 static int aq_pm_freeze(struct device *dev)
 {
-	return aq_suspend_common(dev, false);
+	return aq_suspend_common(dev, true);
 }
 
 static int aq_pm_suspend_poweroff(struct device *dev)
 {
-	return aq_suspend_common(dev, true);
+	return aq_suspend_common(dev, false);
 }
 
 static int aq_pm_thaw(struct device *dev)
 {
-	return atl_resume_common(dev, false);
+	return atl_resume_common(dev, true);
 }
 
 static int aq_pm_resume_restore(struct device *dev)
 {
-	return atl_resume_common(dev, true);
+	return atl_resume_common(dev, false);
 }
 
 static const struct dev_pm_ops aq_pm_ops = {

[PATCH 5.10 58/86] xtensa: patch_text: Fixup last cpu should be master

[Greg Kroah-Hartman]

From: Guo Ren <guoren@linux.alibaba.com>

commit ee69d4be8fd064cd08270b4808d2dfece3614ee0 upstream.

These patch_text implementations are using stop_machine_cpuslocked
infrastructure with atomic cpu_count. The original idea: When the
master CPU patch_text, the others should wait for it. But current
implementation is using the first CPU as master, which couldn't
guarantee the remaining CPUs are waiting. This patch changes the
last CPU as the master to solve the potential risk.

Fixes: 64711f9a47d4 ("xtensa: implement jump_label support")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: <stable@vger.kernel.org>
Message-Id: <20220407073323.743224-4-guoren@kernel.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/xtensa/kernel/jump_label.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/xtensa/kernel/jump_label.c
+++ b/arch/xtensa/kernel/jump_label.c
@@ -40,7 +40,7 @@ static int patch_text_stop_machine(void
 {
 	struct patch *patch = data;
 
-	if (atomic_inc_return(&patch->cpu_count) == 1) {
+	if (atomic_inc_return(&patch->cpu_count) == num_online_cpus()) {
 		local_patch_text(patch->addr, patch->data, patch->sz);
 		atomic_inc(&patch->cpu_count);
 	} else {

[PATCH 5.10 59/86] xtensa: fix a7 clobbering in coprocessor context load/store

[Greg Kroah-Hartman]

From: Max Filippov <jcmvbkbc@gmail.com>

commit 839769c35477d4acc2369e45000ca7b0b6af39a7 upstream.

Fast coprocessor exception handler saves a3..a6, but coprocessor context
load/store code uses a4..a7 as temporaries, potentially clobbering a7.
'Potentially' because coprocessor state load/store macros may not use
all four temporary registers (and neither FPU nor HiFi macros do).
Use a3..a6 as intended.

Cc: stable@vger.kernel.org
Fixes: c658eac628aa ("[XTENSA] Add support for configurable registers and coprocessors")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/xtensa/kernel/coprocessor.S |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/xtensa/kernel/coprocessor.S
+++ b/arch/xtensa/kernel/coprocessor.S
@@ -29,7 +29,7 @@
 	.if XTENSA_HAVE_COPROCESSOR(x);					\
 		.align 4;						\
 	.Lsave_cp_regs_cp##x:						\
-		xchal_cp##x##_store a2 a4 a5 a6 a7;			\
+		xchal_cp##x##_store a2 a3 a4 a5 a6;			\
 		jx	a0;						\
 	.endif
 
@@ -46,7 +46,7 @@
 	.if XTENSA_HAVE_COPROCESSOR(x);					\
 		.align 4;						\
 	.Lload_cp_regs_cp##x:						\
-		xchal_cp##x##_load a2 a4 a5 a6 a7;			\
+		xchal_cp##x##_load a2 a3 a4 a5 a6;			\
 		jx	a0;						\
 	.endif
 

[PATCH 5.10 60/86] openvswitch: fix OOB access in reserve_sfa_size()

[Greg Kroah-Hartman]

From: Paolo Valerio <pvalerio@redhat.com>

commit cefa91b2332d7009bc0be5d951d6cbbf349f90f8 upstream.

Given a sufficiently large number of actions, while copying and
reserving memory for a new action of a new flow, if next_offset is
greater than MAX_ACTIONS_BUFSIZE, the function reserve_sfa_size() does
not return -EMSGSIZE as expected, but it allocates MAX_ACTIONS_BUFSIZE
bytes increasing actions_len by req_size. This can then lead to an OOB
write access, especially when further actions need to be copied.

Fix it by rearranging the flow action size check.

KASAN splat below:

==================================================================
BUG: KASAN: slab-out-of-bounds in reserve_sfa_size+0x1ba/0x380 [openvswitch]
Write of size 65360 at addr ffff888147e4001c by task handler15/836

CPU: 1 PID: 836 Comm: handler15 Not tainted 5.18.0-rc1+ #27
...
Call Trace:
 <TASK>
 dump_stack_lvl+0x45/0x5a
 print_report.cold+0x5e/0x5db
 ? __lock_text_start+0x8/0x8
 ? reserve_sfa_size+0x1ba/0x380 [openvswitch]
 kasan_report+0xb5/0x130
 ? reserve_sfa_size+0x1ba/0x380 [openvswitch]
 kasan_check_range+0xf5/0x1d0
 memcpy+0x39/0x60
 reserve_sfa_size+0x1ba/0x380 [openvswitch]
 __add_action+0x24/0x120 [openvswitch]
 ovs_nla_add_action+0xe/0x20 [openvswitch]
 ovs_ct_copy_action+0x29d/0x1130 [openvswitch]
 ? __kernel_text_address+0xe/0x30
 ? unwind_get_return_address+0x56/0xa0
 ? create_prof_cpu_mask+0x20/0x20
 ? ovs_ct_verify+0xf0/0xf0 [openvswitch]
 ? prep_compound_page+0x198/0x2a0
 ? __kasan_check_byte+0x10/0x40
 ? kasan_unpoison+0x40/0x70
 ? ksize+0x44/0x60
 ? reserve_sfa_size+0x75/0x380 [openvswitch]
 __ovs_nla_copy_actions+0xc26/0x2070 [openvswitch]
 ? __zone_watermark_ok+0x420/0x420
 ? validate_set.constprop.0+0xc90/0xc90 [openvswitch]
 ? __alloc_pages+0x1a9/0x3e0
 ? __alloc_pages_slowpath.constprop.0+0x1da0/0x1da0
 ? unwind_next_frame+0x991/0x1e40
 ? __mod_node_page_state+0x99/0x120
 ? __mod_lruvec_page_state+0x2e3/0x470
 ? __kasan_kmalloc_large+0x90/0xe0
 ovs_nla_copy_actions+0x1b4/0x2c0 [openvswitch]
 ovs_flow_cmd_new+0x3cd/0xb10 [openvswitch]
 ...

Cc: stable@vger.kernel.org
Fixes: f28cd2af22a0 ("openvswitch: fix flow actions reallocation")
Signed-off-by: Paolo Valerio <pvalerio@redhat.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/openvswitch/flow_netlink.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -2436,7 +2436,7 @@ static struct nlattr *reserve_sfa_size(s
 	new_acts_size = max(next_offset + req_size, ksize(*sfa) * 2);
 
 	if (new_acts_size > MAX_ACTIONS_BUFSIZE) {
-		if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size) {
+		if ((next_offset + req_size) > MAX_ACTIONS_BUFSIZE) {
 			OVS_NLERR(log, "Flow action size exceeds max %u",
 				  MAX_ACTIONS_BUFSIZE);
 			return ERR_PTR(-EMSGSIZE);

[PATCH 5.10 61/86] gpio: Request interrupts after IRQ is initialized

[Greg Kroah-Hartman]

From: Mario Limonciello <mario.limonciello@amd.com>

commit 06fb4ecfeac7e00d6704fa5ed19299f2fefb3cc9 upstream.

Commit 5467801f1fcb ("gpio: Restrict usage of GPIO chip irq members
before initialization") attempted to fix a race condition that lead to a
NULL pointer, but in the process caused a regression for _AEI/_EVT
declared GPIOs.

This manifests in messages showing deferred probing while trying to
allocate IRQs like so:

  amd_gpio AMDI0030:00: Failed to translate GPIO pin 0x0000 to IRQ, err -517
  amd_gpio AMDI0030:00: Failed to translate GPIO pin 0x002C to IRQ, err -517
  amd_gpio AMDI0030:00: Failed to translate GPIO pin 0x003D to IRQ, err -517
  [ .. more of the same .. ]

The code for walking _AEI doesn't handle deferred probing and so this
leads to non-functional GPIO interrupts.

Fix this issue by moving the call to `acpi_gpiochip_request_interrupts`
to occur after gc->irc.initialized is set.

Fixes: 5467801f1fcb ("gpio: Restrict usage of GPIO chip irq members before initialization")
Link: https://lore.kernel.org/linux-gpio/BL1PR12MB51577A77F000A008AA694675E2EF9@BL1PR12MB5157.namprd12.prod.outlook.com/
Link: https://bugzilla.suse.com/show_bug.cgi?id=1198697
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215850
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1979
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1976
Reported-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Shreeya Patel <shreeya.patel@collabora.com>
Tested-By: Samuel Čavoj <samuel@cavoj.net>
Tested-By: lukeluk498@gmail.com Link:
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-and-tested-by: Takashi Iwai <tiwai@suse.de>
Cc: Shreeya Patel <shreeya.patel@collabora.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpio/gpiolib.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1612,8 +1612,6 @@ static int gpiochip_add_irqchip(struct g
 
 	gpiochip_set_irq_hooks(gc);
 
-	acpi_gpiochip_request_interrupts(gc);
-
 	/*
 	 * Using barrier() here to prevent compiler from reordering
 	 * gc->irq.initialized before initialization of above
@@ -1623,6 +1621,8 @@ static int gpiochip_add_irqchip(struct g
 
 	gc->irq.initialized = true;
 
+	acpi_gpiochip_request_interrupts(gc);
+
 	return 0;
 }
 

[PATCH 5.10 62/86] ASoC: soc-dapm: fix two incorrect uses of list iterator

[Greg Kroah-Hartman]

From: Xiaomeng Tong <xiam0nd.tong@gmail.com>

commit f730a46b931d894816af34a0ff8e4ad51565b39f upstream.

These two bug are here:
	list_for_each_entry_safe_continue(w, n, list,
					power_list);
	list_for_each_entry_safe_continue(w, n, list,
					power_list);

After the list_for_each_entry_safe_continue() exits, the list iterator
will always be a bogus pointer which point to an invalid struct objdect
containing HEAD member. The funciton poniter 'w->event' will be a
invalid value which can lead to a control-flow hijack if the 'w' can be
controlled.

The original intention was to continue the outer list_for_each_entry_safe()
loop with the same entry if w->event is NULL, but misunderstanding the
meaning of list_for_each_entry_safe_continue().

So just add a 'continue;' to fix the bug.

Cc: stable@vger.kernel.org
Fixes: 163cac061c973 ("ASoC: Factor out DAPM sequence execution")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Link: https://lore.kernel.org/r/20220329012134.9375-1-xiam0nd.tong@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/soc/soc-dapm.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1683,8 +1683,7 @@ static void dapm_seq_run(struct snd_soc_
 		switch (w->id) {
 		case snd_soc_dapm_pre:
 			if (!w->event)
-				list_for_each_entry_safe_continue(w, n, list,
-								  power_list);
+				continue;
 
 			if (event == SND_SOC_DAPM_STREAM_START)
 				ret = w->event(w,
@@ -1696,8 +1695,7 @@ static void dapm_seq_run(struct snd_soc_
 
 		case snd_soc_dapm_post:
 			if (!w->event)
-				list_for_each_entry_safe_continue(w, n, list,
-								  power_list);
+				continue;
 
 			if (event == SND_SOC_DAPM_STREAM_START)
 				ret = w->event(w,

[PATCH 5.10 63/86] e1000e: Fix possible overflow in LTR decoding

[Greg Kroah-Hartman]

From: Sasha Neftin <sasha.neftin@intel.com>

commit 04ebaa1cfddae5f240cc7404f009133bb0389a47 upstream.

When we decode the latency and the max_latency, u16 value may not fit
the required size and could lead to the wrong LTR representation.

Scaling is represented as:
scale 0 - 1         (2^(5*0)) = 2^0
scale 1 - 32        (2^(5 *1))= 2^5
scale 2 - 1024      (2^(5 *2)) =2^10
scale 3 - 32768     (2^(5 *3)) =2^15
scale 4 - 1048576   (2^(5 *4)) = 2^20
scale 5 - 33554432  (2^(5 *4)) = 2^25
scale 4 and scale 5 required 20 and 25 bits respectively.
scale 6 reserved.

Replace the u16 type with the u32 type and allow corrected LTR
representation.

Cc: stable@vger.kernel.org
Fixes: 44a13a5d99c7 ("e1000e: Fix the max snoop/no-snoop latency for 10M")
Reported-by: James Hutchinson <jahutchinson99@googlemail.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215689
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Tested-by: James Hutchinson <jahutchinson99@googlemail.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/e1000e/ich8lan.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -1006,8 +1006,8 @@ static s32 e1000_platform_pm_pch_lpt(str
 {
 	u32 reg = link << (E1000_LTRV_REQ_SHIFT + E1000_LTRV_NOSNOOP_SHIFT) |
 	    link << E1000_LTRV_REQ_SHIFT | E1000_LTRV_SEND;
-	u16 max_ltr_enc_d = 0;	/* maximum LTR decoded by platform */
-	u16 lat_enc_d = 0;	/* latency decoded */
+	u32 max_ltr_enc_d = 0;	/* maximum LTR decoded by platform */
+	u32 lat_enc_d = 0;	/* latency decoded */
 	u16 lat_enc = 0;	/* latency encoded */
 
 	if (link) {

[PATCH 5.10 64/86] ARC: entry: fix syscall_trace_exit argument

[Greg Kroah-Hartman]

From: Sergey Matyukevich <sergey.matyukevich@synopsys.com>

commit b1c6ecfdd06907554518ec384ce8e99889d15193 upstream.

Function syscall_trace_exit expects pointer to pt_regs. However
r0 is also used to keep syscall return value. Restore pointer
to pt_regs before calling syscall_trace_exit.

Cc: <stable@vger.kernel.org>
Signed-off-by: Sergey Matyukevich <sergey.matyukevich@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arc/kernel/entry.S |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -199,6 +199,7 @@ tracesys_exit:
 	st  r0, [sp, PT_r0]     ; sys call return value in pt_regs
 
 	;POST Sys Call Ptrace Hook
+	mov r0, sp		; pt_regs needed
 	bl  @syscall_trace_exit
 	b   ret_from_exception ; NOT ret_from_system_call at is saves r0 which
 	; we'd done before calling post hook above

[PATCH 5.10 65/86] arm_pmu: Validate single/group leader events

[Greg Kroah-Hartman]

From: Rob Herring <robh@kernel.org>

commit e5c23779f93d45e39a52758ca593bd7e62e9b4be upstream.

In the case where there is only a cycle counter available (i.e.
PMCR_EL0.N is 0) and an event other than CPU cycles is opened, the open
should fail as the event can never possibly be scheduled. However, the
event validation when an event is opened is skipped when the group
leader is opened. Fix this by always validating the group leader events.

Reported-by: Al Grant <al.grant@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20220408203330.4014015-1-robh@kernel.org
Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/perf/arm_pmu.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -398,6 +398,9 @@ validate_group(struct perf_event *event)
 	if (!validate_event(event->pmu, &fake_pmu, leader))
 		return -EINVAL;
 
+	if (event == leader)
+		return 0;
+
 	for_each_sibling_event(sibling, leader) {
 		if (!validate_event(event->pmu, &fake_pmu, sibling))
 			return -EINVAL;
@@ -487,12 +490,7 @@ __hw_perf_event_init(struct perf_event *
 		local64_set(&hwc->period_left, hwc->sample_period);
 	}
 
-	if (event->group_leader != event) {
-		if (validate_group(event) != 0)
-			return -EINVAL;
-	}
-
-	return 0;
+	return validate_group(event);
 }
 
 static int armpmu_event_init(struct perf_event *event)

[PATCH 5.10 66/86] sched/pelt: Fix attach_entity_load_avg() corner case

[Greg Kroah-Hartman]

From: kuyo chang <kuyo.chang@mediatek.com>

[ Upstream commit 40f5aa4c5eaebfeaca4566217cb9c468e28ed682 ]

The warning in cfs_rq_is_decayed() triggered:

    SCHED_WARN_ON(cfs_rq->avg.load_avg ||
		  cfs_rq->avg.util_avg ||
		  cfs_rq->avg.runnable_avg)

There exists a corner case in attach_entity_load_avg() which will
cause load_sum to be zero while load_avg will not be.

Consider se_weight is 88761 as per the sched_prio_to_weight[] table.
Further assume the get_pelt_divider() is 47742, this gives:
se->avg.load_avg is 1.

However, calculating load_sum:

  se->avg.load_sum = div_u64(se->avg.load_avg * se->avg.load_sum, se_weight(se));
  se->avg.load_sum = 1*47742/88761 = 0.

Then enqueue_load_avg() adds this to the cfs_rq totals:

  cfs_rq->avg.load_avg += se->avg.load_avg;
  cfs_rq->avg.load_sum += se_weight(se) * se->avg.load_sum;

Resulting in load_avg being 1 with load_sum is 0, which will trigger
the WARN.

Fixes: f207934fb79d ("sched/fair: Align PELT windows between cfs_rq and its se")
Signed-off-by: kuyo chang <kuyo.chang@mediatek.com>
[peterz: massage changelog]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lkml.kernel.org/r/20220414090229.342-1-kuyo.chang@mediatek.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/sched/fair.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index acd9833b8ec2..1a306ef51bbe 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3748,11 +3748,11 @@ static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *s
 
 	se->avg.runnable_sum = se->avg.runnable_avg * divider;
 
-	se->avg.load_sum = divider;
-	if (se_weight(se)) {
-		se->avg.load_sum =
-			div_u64(se->avg.load_avg * se->avg.load_sum, se_weight(se));
-	}
+	se->avg.load_sum = se->avg.load_avg * divider;
+	if (se_weight(se) < se->avg.load_sum)
+		se->avg.load_sum = div_u64(se->avg.load_sum, se_weight(se));
+	else
+		se->avg.load_sum = 1;
 
 	enqueue_load_avg(cfs_rq, se);
 	cfs_rq->avg.util_avg += se->avg.util_avg;
-- 
2.35.1

[PATCH 5.10 67/86] perf/core: Fix perf_mmap fail when CONFIG_PERF_USE_VMALLOC enabled

[Greg Kroah-Hartman]

From: Zhipeng Xie <xiezhipeng1@huawei.com>

[ Upstream commit 60490e7966659b26d74bf1fa4aa8693d9a94ca88 ]

This problem can be reproduced with CONFIG_PERF_USE_VMALLOC enabled on
both x86_64 and aarch64 arch when using sysdig -B(using ebpf)[1].
sysdig -B works fine after rebuilding the kernel with
CONFIG_PERF_USE_VMALLOC disabled.

I tracked it down to the if condition event->rb->nr_pages != nr_pages
in perf_mmap is true when CONFIG_PERF_USE_VMALLOC is enabled where
event->rb->nr_pages = 1 and nr_pages = 2048 resulting perf_mmap to
return -EINVAL. This is because when CONFIG_PERF_USE_VMALLOC is
enabled, rb->nr_pages is always equal to 1.

Arch with CONFIG_PERF_USE_VMALLOC enabled by default:
	arc/arm/csky/mips/sh/sparc/xtensa

Arch with CONFIG_PERF_USE_VMALLOC disabled by default:
	x86_64/aarch64/...

Fix this problem by using data_page_nr()

[1] https://github.com/draios/sysdig

Fixes: 906010b2134e ("perf_event: Provide vmalloc() based mmap() backing")
Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220209145417.6495-1-xiezhipeng1@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/events/core.c        | 2 +-
 kernel/events/internal.h    | 5 +++++
 kernel/events/ring_buffer.c | 5 -----
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 79d8b27cf2fc..9aa6563587d8 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6221,7 +6221,7 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
 again:
 	mutex_lock(&event->mmap_mutex);
 	if (event->rb) {
-		if (event->rb->nr_pages != nr_pages) {
+		if (data_page_nr(event->rb) != nr_pages) {
 			ret = -EINVAL;
 			goto unlock;
 		}
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 228801e20788..aa23ffdaf819 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -116,6 +116,11 @@ static inline int page_order(struct perf_buffer *rb)
 }
 #endif
 
+static inline int data_page_nr(struct perf_buffer *rb)
+{
+	return rb->nr_pages << page_order(rb);
+}
+
 static inline unsigned long perf_data_size(struct perf_buffer *rb)
 {
 	return rb->nr_pages << (PAGE_SHIFT + page_order(rb));
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index ef91ae75ca56..4032cd475000 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -856,11 +856,6 @@ void rb_free(struct perf_buffer *rb)
 }
 
 #else
-static int data_page_nr(struct perf_buffer *rb)
-{
-	return rb->nr_pages << page_order(rb);
-}
-
 static struct page *
 __perf_mmap_to_page(struct perf_buffer *rb, unsigned long pgoff)
 {
-- 
2.35.1

[PATCH 5.10 68/86] drm/panel/raspberrypi-touchscreen: Avoid NULL deref if not initialised

[Greg Kroah-Hartman]

From: Dave Stevenson <dave.stevenson@raspberrypi.com>

[ Upstream commit f92055ae0acb035891e988ce345d6b81a0316423 ]

If a call to rpi_touchscreen_i2c_write from rpi_touchscreen_probe
fails before mipi_dsi_device_register_full is called, then
in trying to log the error message if uses ts->dsi->dev when
it is still NULL.

Use ts->i2c->dev instead, which is initialised earlier in probe.

Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220415162513.42190-2-stefan.wahren@i2se.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
index bbdd086be7f5..90487df62480 100644
--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
@@ -229,7 +229,7 @@ static void rpi_touchscreen_i2c_write(struct rpi_touchscreen *ts,
 
 	ret = i2c_smbus_write_byte_data(ts->i2c, reg, val);
 	if (ret)
-		dev_err(&ts->dsi->dev, "I2C write failed: %d\n", ret);
+		dev_err(&ts->i2c->dev, "I2C write failed: %d\n", ret);
 }
 
 static int rpi_touchscreen_write(struct rpi_touchscreen *ts, u16 reg, u32 val)
-- 
2.35.1

[PATCH 5.10 69/86] drm/panel/raspberrypi-touchscreen: Initialise the bridge in prepare

[Greg Kroah-Hartman]

From: Dave Stevenson <dave.stevenson@raspberrypi.com>

[ Upstream commit 5f18c0782b99e26121efa93d20b76c19e17aa1dd ]

The panel has a prepare call which is before video starts, and an
enable call which is after.
The Toshiba bridge should be configured before video, so move
the relevant power and initialisation calls to prepare.

Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220415162513.42190-3-stefan.wahren@i2se.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
index 90487df62480..4b92c6341490 100644
--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
@@ -265,7 +265,7 @@ static int rpi_touchscreen_noop(struct drm_panel *panel)
 	return 0;
 }
 
-static int rpi_touchscreen_enable(struct drm_panel *panel)
+static int rpi_touchscreen_prepare(struct drm_panel *panel)
 {
 	struct rpi_touchscreen *ts = panel_to_ts(panel);
 	int i;
@@ -295,6 +295,13 @@ static int rpi_touchscreen_enable(struct drm_panel *panel)
 	rpi_touchscreen_write(ts, DSI_STARTDSI, 0x01);
 	msleep(100);
 
+	return 0;
+}
+
+static int rpi_touchscreen_enable(struct drm_panel *panel)
+{
+	struct rpi_touchscreen *ts = panel_to_ts(panel);
+
 	/* Turn on the backlight. */
 	rpi_touchscreen_i2c_write(ts, REG_PWM, 255);
 
@@ -349,7 +356,7 @@ static int rpi_touchscreen_get_modes(struct drm_panel *panel,
 static const struct drm_panel_funcs rpi_touchscreen_funcs = {
 	.disable = rpi_touchscreen_disable,
 	.unprepare = rpi_touchscreen_noop,
-	.prepare = rpi_touchscreen_noop,
+	.prepare = rpi_touchscreen_prepare,
 	.enable = rpi_touchscreen_enable,
 	.get_modes = rpi_touchscreen_get_modes,
 };
-- 
2.35.1

[PATCH 5.10 70/86] KVM: PPC: Fix TCE handling for VFIO

[Greg Kroah-Hartman]

From: Alexey Kardashevskiy <aik@ozlabs.ru>

[ Upstream commit 26a62b750a4e6364b0393562f66759b1494c3a01 ]

The LoPAPR spec defines a guest visible IOMMU with a variable page size.
Currently QEMU advertises 4K, 64K, 2M, 16MB pages, a Linux VM picks
the biggest (16MB). In the case of a passed though PCI device, there is
a hardware IOMMU which does not support all pages sizes from the above -
P8 cannot do 2MB and P9 cannot do 16MB. So for each emulated
16M IOMMU page we may create several smaller mappings ("TCEs") in
the hardware IOMMU.

The code wrongly uses the emulated TCE index instead of hardware TCE
index in error handling. The problem is easier to see on POWER8 with
multi-level TCE tables (when only the first level is preallocated)
as hash mode uses real mode TCE hypercalls handlers.
The kernel starts using indirect tables when VMs get bigger than 128GB
(depends on the max page order).
The very first real mode hcall is going to fail with H_TOO_HARD as
in the real mode we cannot allocate memory for TCEs (we can in the virtual
mode) but on the way out the code attempts to clear hardware TCEs using
emulated TCE indexes which corrupts random kernel memory because
it_offset==1<<59 is subtracted from those indexes and the resulting index
is out of the TCE table bounds.

This fixes kvmppc_clear_tce() to use the correct TCE indexes.

While at it, this fixes TCE cache invalidation which uses emulated TCE
indexes instead of the hardware ones. This went unnoticed as 64bit DMA
is used these days and VMs map all RAM in one go and only then do DMA
and this is when the TCE cache gets populated.

Potentially this could slow down mapping, however normally 16MB
emulated pages are backed by 64K hardware pages so it is one write to
the "TCE Kill" per 256 updates which is not that bad considering the size
of the cache (1024 TCEs or so).

Fixes: ca1fc489cfa0 ("KVM: PPC: Book3S: Allow backing bigger guest IOMMU pages with smaller physical pages")

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Tested-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220420050840.328223-1-aik@ozlabs.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/kvm/book3s_64_vio.c    | 45 +++++++++++++++--------------
 arch/powerpc/kvm/book3s_64_vio_hv.c | 44 ++++++++++++++--------------
 2 files changed, 45 insertions(+), 44 deletions(-)

diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index 8da93fdfa59e..c640053ab03f 100644
--- a/arch/powerpc/kvm/book3s_64_vio.c
+++ b/arch/powerpc/kvm/book3s_64_vio.c
@@ -421,13 +421,19 @@ static void kvmppc_tce_put(struct kvmppc_spapr_tce_table *stt,
 	tbl[idx % TCES_PER_PAGE] = tce;
 }
 
-static void kvmppc_clear_tce(struct mm_struct *mm, struct iommu_table *tbl,
-		unsigned long entry)
+static void kvmppc_clear_tce(struct mm_struct *mm, struct kvmppc_spapr_tce_table *stt,
+		struct iommu_table *tbl, unsigned long entry)
 {
-	unsigned long hpa = 0;
-	enum dma_data_direction dir = DMA_NONE;
+	unsigned long i;
+	unsigned long subpages = 1ULL << (stt->page_shift - tbl->it_page_shift);
+	unsigned long io_entry = entry << (stt->page_shift - tbl->it_page_shift);
+
+	for (i = 0; i < subpages; ++i) {
+		unsigned long hpa = 0;
+		enum dma_data_direction dir = DMA_NONE;
 
-	iommu_tce_xchg_no_kill(mm, tbl, entry, &hpa, &dir);
+		iommu_tce_xchg_no_kill(mm, tbl, io_entry + i, &hpa, &dir);
+	}
 }
 
 static long kvmppc_tce_iommu_mapped_dec(struct kvm *kvm,
@@ -486,6 +492,8 @@ static long kvmppc_tce_iommu_unmap(struct kvm *kvm,
 			break;
 	}
 
+	iommu_tce_kill(tbl, io_entry, subpages);
+
 	return ret;
 }
 
@@ -545,6 +553,8 @@ static long kvmppc_tce_iommu_map(struct kvm *kvm,
 			break;
 	}
 
+	iommu_tce_kill(tbl, io_entry, subpages);
+
 	return ret;
 }
 
@@ -591,10 +601,9 @@ long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 			ret = kvmppc_tce_iommu_map(vcpu->kvm, stt, stit->tbl,
 					entry, ua, dir);
 
-		iommu_tce_kill(stit->tbl, entry, 1);
 
 		if (ret != H_SUCCESS) {
-			kvmppc_clear_tce(vcpu->kvm->mm, stit->tbl, entry);
+			kvmppc_clear_tce(vcpu->kvm->mm, stt, stit->tbl, entry);
 			goto unlock_exit;
 		}
 	}
@@ -670,13 +679,13 @@ long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 		 */
 		if (get_user(tce, tces + i)) {
 			ret = H_TOO_HARD;
-			goto invalidate_exit;
+			goto unlock_exit;
 		}
 		tce = be64_to_cpu(tce);
 
 		if (kvmppc_tce_to_ua(vcpu->kvm, tce, &ua)) {
 			ret = H_PARAMETER;
-			goto invalidate_exit;
+			goto unlock_exit;
 		}
 
 		list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
@@ -685,19 +694,15 @@ long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 					iommu_tce_direction(tce));
 
 			if (ret != H_SUCCESS) {
-				kvmppc_clear_tce(vcpu->kvm->mm, stit->tbl,
-						entry);
-				goto invalidate_exit;
+				kvmppc_clear_tce(vcpu->kvm->mm, stt, stit->tbl,
+						 entry + i);
+				goto unlock_exit;
 			}
 		}
 
 		kvmppc_tce_put(stt, entry + i, tce);
 	}
 
-invalidate_exit:
-	list_for_each_entry_lockless(stit, &stt->iommu_tables, next)
-		iommu_tce_kill(stit->tbl, entry, npages);
-
 unlock_exit:
 	srcu_read_unlock(&vcpu->kvm->srcu, idx);
 
@@ -736,20 +741,16 @@ long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
 				continue;
 
 			if (ret == H_TOO_HARD)
-				goto invalidate_exit;
+				return ret;
 
 			WARN_ON_ONCE(1);
-			kvmppc_clear_tce(vcpu->kvm->mm, stit->tbl, entry);
+			kvmppc_clear_tce(vcpu->kvm->mm, stt, stit->tbl, entry + i);
 		}
 	}
 
 	for (i = 0; i < npages; ++i, ioba += (1ULL << stt->page_shift))
 		kvmppc_tce_put(stt, ioba >> stt->page_shift, tce_value);
 
-invalidate_exit:
-	list_for_each_entry_lockless(stit, &stt->iommu_tables, next)
-		iommu_tce_kill(stit->tbl, ioba >> stt->page_shift, npages);
-
 	return ret;
 }
 EXPORT_SYMBOL_GPL(kvmppc_h_stuff_tce);
diff --git a/arch/powerpc/kvm/book3s_64_vio_hv.c b/arch/powerpc/kvm/book3s_64_vio_hv.c
index e5ba96c41f3f..57af53a6a2d8 100644
--- a/arch/powerpc/kvm/book3s_64_vio_hv.c
+++ b/arch/powerpc/kvm/book3s_64_vio_hv.c
@@ -247,13 +247,19 @@ static void iommu_tce_kill_rm(struct iommu_table *tbl,
 		tbl->it_ops->tce_kill(tbl, entry, pages, true);
 }
 
-static void kvmppc_rm_clear_tce(struct kvm *kvm, struct iommu_table *tbl,
-		unsigned long entry)
+static void kvmppc_rm_clear_tce(struct kvm *kvm, struct kvmppc_spapr_tce_table *stt,
+		struct iommu_table *tbl, unsigned long entry)
 {
-	unsigned long hpa = 0;
-	enum dma_data_direction dir = DMA_NONE;
+	unsigned long i;
+	unsigned long subpages = 1ULL << (stt->page_shift - tbl->it_page_shift);
+	unsigned long io_entry = entry << (stt->page_shift - tbl->it_page_shift);
+
+	for (i = 0; i < subpages; ++i) {
+		unsigned long hpa = 0;
+		enum dma_data_direction dir = DMA_NONE;
 
-	iommu_tce_xchg_no_kill_rm(kvm->mm, tbl, entry, &hpa, &dir);
+		iommu_tce_xchg_no_kill_rm(kvm->mm, tbl, io_entry + i, &hpa, &dir);
+	}
 }
 
 static long kvmppc_rm_tce_iommu_mapped_dec(struct kvm *kvm,
@@ -316,6 +322,8 @@ static long kvmppc_rm_tce_iommu_unmap(struct kvm *kvm,
 			break;
 	}
 
+	iommu_tce_kill_rm(tbl, io_entry, subpages);
+
 	return ret;
 }
 
@@ -379,6 +387,8 @@ static long kvmppc_rm_tce_iommu_map(struct kvm *kvm,
 			break;
 	}
 
+	iommu_tce_kill_rm(tbl, io_entry, subpages);
+
 	return ret;
 }
 
@@ -424,10 +434,8 @@ long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 			ret = kvmppc_rm_tce_iommu_map(vcpu->kvm, stt,
 					stit->tbl, entry, ua, dir);
 
-		iommu_tce_kill_rm(stit->tbl, entry, 1);
-
 		if (ret != H_SUCCESS) {
-			kvmppc_rm_clear_tce(vcpu->kvm, stit->tbl, entry);
+			kvmppc_rm_clear_tce(vcpu->kvm, stt, stit->tbl, entry);
 			return ret;
 		}
 	}
@@ -569,7 +577,7 @@ long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 		ua = 0;
 		if (kvmppc_rm_tce_to_ua(vcpu->kvm, tce, &ua)) {
 			ret = H_PARAMETER;
-			goto invalidate_exit;
+			goto unlock_exit;
 		}
 
 		list_for_each_entry_lockless(stit, &stt->iommu_tables, next) {
@@ -578,19 +586,15 @@ long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 					iommu_tce_direction(tce));
 
 			if (ret != H_SUCCESS) {
-				kvmppc_rm_clear_tce(vcpu->kvm, stit->tbl,
-						entry);
-				goto invalidate_exit;
+				kvmppc_rm_clear_tce(vcpu->kvm, stt, stit->tbl,
+						entry + i);
+				goto unlock_exit;
 			}
 		}
 
 		kvmppc_rm_tce_put(stt, entry + i, tce);
 	}
 
-invalidate_exit:
-	list_for_each_entry_lockless(stit, &stt->iommu_tables, next)
-		iommu_tce_kill_rm(stit->tbl, entry, npages);
-
 unlock_exit:
 	if (!prereg)
 		arch_spin_unlock(&kvm->mmu_lock.rlock.raw_lock);
@@ -632,20 +636,16 @@ long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
 				continue;
 
 			if (ret == H_TOO_HARD)
-				goto invalidate_exit;
+				return ret;
 
 			WARN_ON_ONCE_RM(1);
-			kvmppc_rm_clear_tce(vcpu->kvm, stit->tbl, entry);
+			kvmppc_rm_clear_tce(vcpu->kvm, stt, stit->tbl, entry + i);
 		}
 	}
 
 	for (i = 0; i < npages; ++i, ioba += (1ULL << stt->page_shift))
 		kvmppc_rm_tce_put(stt, ioba >> stt->page_shift, tce_value);
 
-invalidate_exit:
-	list_for_each_entry_lockless(stit, &stt->iommu_tables, next)
-		iommu_tce_kill_rm(stit->tbl, ioba >> stt->page_shift, npages);
-
 	return ret;
 }
 
-- 
2.35.1

[PATCH 5.10 71/86] drm/vc4: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit 3d0b93d92a2790337aa9d18cb332d02356a24126 ]

If the device is already in a runtime PM enabled state
pm_runtime_get_sync() will return 1.

Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync()
fails, so use pm_runtime_resume_and_get() instead. this function
will handle this.

Fixes: 4078f5757144 ("drm/vc4: Add DSI driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220420135008.2757-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/vc4/vc4_dsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
index eaf276978ee7..ad84b56f4091 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -835,7 +835,7 @@ static void vc4_dsi_encoder_enable(struct drm_encoder *encoder)
 	unsigned long phy_clock;
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret) {
 		DRM_ERROR("Failed to runtime PM enable on DSI%d\n", dsi->port);
 		return;
-- 
2.35.1

[PATCH 5.10 72/86] powerpc/perf: Fix power9 event alternatives

[Greg Kroah-Hartman]

From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>

[ Upstream commit 0dcad700bb2776e3886fe0a645a4bf13b1e747cd ]

When scheduling a group of events, there are constraint checks done to
make sure all events can go in a group. Example, one of the criteria is
that events in a group cannot use the same PMC. But platform specific
PMU supports alternative event for some of the event codes. During
perf_event_open(), if any event group doesn't match constraint check
criteria, further lookup is done to find alternative event.

By current design, the array of alternatives events in PMU code is
expected to be sorted by column 0. This is because in
find_alternative() the return criteria is based on event code
comparison. ie. "event < ev_alt[i][0])". This optimisation is there
since find_alternative() can be called multiple times. In power9 PMU
code, the alternative event array is not sorted properly and hence there
is breakage in finding alternative events.

To work with existing logic, fix the alternative event array to be
sorted by column 0 for power9-pmu.c

Results:

With alternative events, multiplexing can be avoided. That is, for
example, in power9 PM_LD_MISS_L1 (0x3e054) has alternative event,
PM_LD_MISS_L1_ALT (0x400f0). This is an identical event which can be
programmed in a different PMC.

Before:

 # perf stat -e r3e054,r300fc

 Performance counter stats for 'system wide':

           1057860      r3e054              (50.21%)
               379      r300fc              (49.79%)

       0.944329741 seconds time elapsed

Since both the events are using PMC3 in this case, they are
multiplexed here.

After:

 # perf stat -e r3e054,r300fc

 Performance counter stats for 'system wide':

           1006948      r3e054
               182      r300fc

Fixes: 91e0bd1e6251 ("powerpc/perf: Add PM_LD_MISS_L1 and PM_BR_2PATH to power9 event list")
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220419114828.89843-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/perf/power9-pmu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c
index 2a57e93a79dc..7245355bee28 100644
--- a/arch/powerpc/perf/power9-pmu.c
+++ b/arch/powerpc/perf/power9-pmu.c
@@ -133,11 +133,11 @@ int p9_dd22_bl_ev[] = {
 
 /* Table of alternatives, sorted by column 0 */
 static const unsigned int power9_event_alternatives[][MAX_ALT] = {
-	{ PM_INST_DISP,			PM_INST_DISP_ALT },
-	{ PM_RUN_CYC_ALT,		PM_RUN_CYC },
-	{ PM_RUN_INST_CMPL_ALT,		PM_RUN_INST_CMPL },
-	{ PM_LD_MISS_L1,		PM_LD_MISS_L1_ALT },
 	{ PM_BR_2PATH,			PM_BR_2PATH_ALT },
+	{ PM_INST_DISP,			PM_INST_DISP_ALT },
+	{ PM_RUN_CYC_ALT,               PM_RUN_CYC },
+	{ PM_LD_MISS_L1,                PM_LD_MISS_L1_ALT },
+	{ PM_RUN_INST_CMPL_ALT,         PM_RUN_INST_CMPL },
 };
 
 static int power9_get_alternatives(u64 event, unsigned int flags, u64 alt[])
-- 
2.35.1

[PATCH 5.10 73/86] perf report: Set PERF_SAMPLE_DATA_SRC bit for Arm SPE event

[Greg Kroah-Hartman]

From: Leo Yan <leo.yan@linaro.org>

[ Upstream commit ccb17caecfbd542f49a2a79ae088136ba8bfb794 ]

Since commit bb30acae4c4dacfa ("perf report: Bail out --mem-mode if mem
info is not available") "perf mem report" and "perf report --mem-mode"
don't report result if the PERF_SAMPLE_DATA_SRC bit is missed in sample
type.

The commit ffab487052054162 ("perf: arm-spe: Fix perf report
--mem-mode") partially fixes the issue.  It adds PERF_SAMPLE_DATA_SRC
bit for Arm SPE event, this allows the perf data file generated by
kernel v5.18-rc1 or later version can be reported properly.

On the other hand, perf tool still fails to be backward compatibility
for a data file recorded by an older version's perf which contains Arm
SPE trace data.  This patch is a workaround in reporting phase, when
detects ARM SPE PMU event and without PERF_SAMPLE_DATA_SRC bit, it will
force to set the bit in the sample type and give a warning info.

Fixes: bb30acae4c4dacfa ("perf report: Bail out --mem-mode if mem info is not available")
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Tested-by: German Gomez <german.gomez@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Link: https://lore.kernel.org/r/20220414123201.842754-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/perf/builtin-report.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 91cab5cdfbc1..b55ee073c2f7 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -340,6 +340,7 @@ static int report__setup_sample_type(struct report *rep)
 	struct perf_session *session = rep->session;
 	u64 sample_type = evlist__combined_sample_type(session->evlist);
 	bool is_pipe = perf_data__is_pipe(session->data);
+	struct evsel *evsel;
 
 	if (session->itrace_synth_opts->callchain ||
 	    session->itrace_synth_opts->add_callchain ||
@@ -394,6 +395,19 @@ static int report__setup_sample_type(struct report *rep)
 	}
 
 	if (sort__mode == SORT_MODE__MEMORY) {
+		/*
+		 * FIXUP: prior to kernel 5.18, Arm SPE missed to set
+		 * PERF_SAMPLE_DATA_SRC bit in sample type.  For backward
+		 * compatibility, set the bit if it's an old perf data file.
+		 */
+		evlist__for_each_entry(session->evlist, evsel) {
+			if (strstr(evsel->name, "arm_spe") &&
+				!(sample_type & PERF_SAMPLE_DATA_SRC)) {
+				evsel->core.attr.sample_type |= PERF_SAMPLE_DATA_SRC;
+				sample_type |= PERF_SAMPLE_DATA_SRC;
+			}
+		}
+
 		if (!is_pipe && !(sample_type & PERF_SAMPLE_DATA_SRC)) {
 			ui__error("Selected --mem-mode but no mem data. "
 				  "Did you call perf record without -d?\n");
-- 
2.35.1

[PATCH 5.10 74/86] ext4: fix fallocate to use file_modified to update permissions consistently

[Greg Kroah-Hartman]

From: Darrick J. Wong <djwong@kernel.org>

commit ad5cd4f4ee4d5fcdb1bfb7a0c073072961e70783 upstream.

Since the initial introduction of (posix) fallocate back at the turn of
the century, it has been possible to use this syscall to change the
user-visible contents of files.  This can happen by extending the file
size during a preallocation, or through any of the newer modes (punch,
zero, collapse, insert range).  Because the call can be used to change
file contents, we should treat it like we do any other modification to a
file -- update the mtime, and drop set[ug]id privileges/capabilities.

The VFS function file_modified() does all this for us if pass it a
locked inode, so let's make fallocate drop permissions correctly.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20220308185043.GA117678@magnolia
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/ext4.h    |    2 +-
 fs/ext4/extents.c |   32 +++++++++++++++++++++++++-------
 fs/ext4/inode.c   |    7 ++++++-
 3 files changed, 32 insertions(+), 9 deletions(-)

--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2870,7 +2870,7 @@ extern int ext4_inode_attach_jinode(stru
 extern int ext4_can_truncate(struct inode *inode);
 extern int ext4_truncate(struct inode *);
 extern int ext4_break_layouts(struct inode *);
-extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length);
+extern int ext4_punch_hole(struct file *file, loff_t offset, loff_t length);
 extern void ext4_set_inode_flags(struct inode *, bool init);
 extern int ext4_alloc_da_blocks(struct inode *inode);
 extern void ext4_set_aops(struct inode *inode);
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4498,9 +4498,9 @@ retry:
 	return ret > 0 ? ret2 : ret;
 }
 
-static int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len);
+static int ext4_collapse_range(struct file *file, loff_t offset, loff_t len);
 
-static int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len);
+static int ext4_insert_range(struct file *file, loff_t offset, loff_t len);
 
 static long ext4_zero_range(struct file *file, loff_t offset,
 			    loff_t len, int mode)
@@ -4571,6 +4571,10 @@ static long ext4_zero_range(struct file
 	/* Wait all existing dio workers, newcomers will block on i_mutex */
 	inode_dio_wait(inode);
 
+	ret = file_modified(file);
+	if (ret)
+		goto out_mutex;
+
 	/* Preallocate the range including the unaligned edges */
 	if (partial_begin || partial_end) {
 		ret = ext4_alloc_file_blocks(file,
@@ -4689,7 +4693,7 @@ long ext4_fallocate(struct file *file, i
 	ext4_fc_start_update(inode);
 
 	if (mode & FALLOC_FL_PUNCH_HOLE) {
-		ret = ext4_punch_hole(inode, offset, len);
+		ret = ext4_punch_hole(file, offset, len);
 		goto exit;
 	}
 
@@ -4698,12 +4702,12 @@ long ext4_fallocate(struct file *file, i
 		goto exit;
 
 	if (mode & FALLOC_FL_COLLAPSE_RANGE) {
-		ret = ext4_collapse_range(inode, offset, len);
+		ret = ext4_collapse_range(file, offset, len);
 		goto exit;
 	}
 
 	if (mode & FALLOC_FL_INSERT_RANGE) {
-		ret = ext4_insert_range(inode, offset, len);
+		ret = ext4_insert_range(file, offset, len);
 		goto exit;
 	}
 
@@ -4739,6 +4743,10 @@ long ext4_fallocate(struct file *file, i
 	/* Wait all existing dio workers, newcomers will block on i_mutex */
 	inode_dio_wait(inode);
 
+	ret = file_modified(file);
+	if (ret)
+		goto out;
+
 	ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, flags);
 	if (ret)
 		goto out;
@@ -5241,8 +5249,9 @@ out:
  * This implements the fallocate's collapse range functionality for ext4
  * Returns: 0 and non-zero on error.
  */
-static int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len)
+static int ext4_collapse_range(struct file *file, loff_t offset, loff_t len)
 {
+	struct inode *inode = file_inode(file);
 	struct super_block *sb = inode->i_sb;
 	ext4_lblk_t punch_start, punch_stop;
 	handle_t *handle;
@@ -5293,6 +5302,10 @@ static int ext4_collapse_range(struct in
 	/* Wait for existing dio to complete */
 	inode_dio_wait(inode);
 
+	ret = file_modified(file);
+	if (ret)
+		goto out_mutex;
+
 	/*
 	 * Prevent page faults from reinstantiating pages we have released from
 	 * page cache.
@@ -5387,8 +5400,9 @@ out_mutex:
  * by len bytes.
  * Returns 0 on success, error otherwise.
  */
-static int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len)
+static int ext4_insert_range(struct file *file, loff_t offset, loff_t len)
 {
+	struct inode *inode = file_inode(file);
 	struct super_block *sb = inode->i_sb;
 	handle_t *handle;
 	struct ext4_ext_path *path;
@@ -5444,6 +5458,10 @@ static int ext4_insert_range(struct inod
 	/* Wait for existing dio to complete */
 	inode_dio_wait(inode);
 
+	ret = file_modified(file);
+	if (ret)
+		goto out_mutex;
+
 	/*
 	 * Prevent page faults from reinstantiating pages we have released from
 	 * page cache.
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4028,8 +4028,9 @@ int ext4_break_layouts(struct inode *ino
  * Returns: 0 on success or negative on failure
  */
 
-int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
+int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
 {
+	struct inode *inode = file_inode(file);
 	struct super_block *sb = inode->i_sb;
 	ext4_lblk_t first_block, stop_block;
 	struct address_space *mapping = inode->i_mapping;
@@ -4091,6 +4092,10 @@ int ext4_punch_hole(struct inode *inode,
 	/* Wait all existing dio workers, newcomers will block on i_mutex */
 	inode_dio_wait(inode);
 
+	ret = file_modified(file);
+	if (ret)
+		goto out_mutex;
+
 	/*
 	 * Prevent page faults from reinstantiating pages we have released from
 	 * page cache.

[PATCH 5.10 75/86] ext4: fix symlink file size not match to file content

[Greg Kroah-Hartman]

From: Ye Bin <yebin10@huawei.com>

commit a2b0b205d125f27cddfb4f7280e39affdaf46686 upstream.

We got issue as follows:
[home]# fsck.ext4  -fn  ram0yb
e2fsck 1.45.6 (20-Mar-2020)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Symlink /p3/d14/d1a/l3d (inode #3494) is invalid.
Clear? no
Entry 'l3d' in /p3/d14/d1a (3383) has an incorrect filetype (was 7, should be 0).
Fix? no

As the symlink file size does not match the file content. If the writeback
of the symlink data block failed, ext4_finish_bio() handles the end of IO.
However this function fails to mark the buffer with BH_write_io_error and
so when unmount does journal checkpoint it cannot detect the writeback
error and will cleanup the journal. Thus we've lost the correct data in the
journal area. To solve this issue, mark the buffer as BH_write_io_error in
ext4_finish_bio().

Cc: stable@kernel.org
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220321144438.201685-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/page-io.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -137,8 +137,10 @@ static void ext4_finish_bio(struct bio *
 				continue;
 			}
 			clear_buffer_async_write(bh);
-			if (bio->bi_status)
+			if (bio->bi_status) {
+				set_buffer_write_io_error(bh);
 				buffer_io_error(bh);
+			}
 		} while ((bh = bh->b_this_page) != head);
 		spin_unlock_irqrestore(&head->b_uptodate_lock, flags);
 		if (!under_io) {

[PATCH 5.10 76/86] ext4: fix use-after-free in ext4_search_dir

[Greg Kroah-Hartman]

From: Ye Bin <yebin10@huawei.com>

commit c186f0887fe7061a35cebef024550ec33ef8fbd8 upstream.

We got issue as follows:
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
==================================================================
BUG: KASAN: use-after-free in ext4_search_dir fs/ext4/namei.c:1394 [inline]
BUG: KASAN: use-after-free in search_dirblock fs/ext4/namei.c:1199 [inline]
BUG: KASAN: use-after-free in __ext4_find_entry+0xdca/0x1210 fs/ext4/namei.c:1553
Read of size 1 at addr ffff8881317c3005 by task syz-executor117/2331

CPU: 1 PID: 2331 Comm: syz-executor117 Not tainted 5.10.0+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:83 [inline]
 dump_stack+0x144/0x187 lib/dump_stack.c:124
 print_address_description+0x7d/0x630 mm/kasan/report.c:387
 __kasan_report+0x132/0x190 mm/kasan/report.c:547
 kasan_report+0x47/0x60 mm/kasan/report.c:564
 ext4_search_dir fs/ext4/namei.c:1394 [inline]
 search_dirblock fs/ext4/namei.c:1199 [inline]
 __ext4_find_entry+0xdca/0x1210 fs/ext4/namei.c:1553
 ext4_lookup_entry fs/ext4/namei.c:1622 [inline]
 ext4_lookup+0xb8/0x3a0 fs/ext4/namei.c:1690
 __lookup_hash+0xc5/0x190 fs/namei.c:1451
 do_rmdir+0x19e/0x310 fs/namei.c:3760
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x445e59
Code: 4d c7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 1b c7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff2277fac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000400280 RCX: 0000000000445e59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
R10: 00007fff2277f990 R11: 0000000000000246 R12: 0000000000000000
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000

The buggy address belongs to the page:
page:0000000048cd3304 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x1317c3
flags: 0x200000000000000()
raw: 0200000000000000 ffffea0004526588 ffffea0004528088 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881317c2f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881317c2f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881317c3000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff8881317c3080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881317c3100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================

ext4_search_dir:
  ...
  de = (struct ext4_dir_entry_2 *)search_buf;
  dlimit = search_buf + buf_size;
  while ((char *) de < dlimit) {
  ...
    if ((char *) de + de->name_len <= dlimit &&
	 ext4_match(dir, fname, de)) {
	    ...
    }
  ...
    de_len = ext4_rec_len_from_disk(de->rec_len, dir->i_sb->s_blocksize);
    if (de_len <= 0)
      return -1;
    offset += de_len;
    de = (struct ext4_dir_entry_2 *) ((char *) de + de_len);
  }

Assume:
de=0xffff8881317c2fff
dlimit=0x0xffff8881317c3000

If read 'de->name_len' which address is 0xffff8881317c3005, obviously is
out of range, then will trigger use-after-free.
To solve this issue, 'dlimit' must reserve 8 bytes, as we will read
'de->name_len' to judge if '(char *) de + de->name_len' out of range.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220324064816.1209985-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/ext4.h  |    4 ++++
 fs/ext4/namei.c |    4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2159,6 +2159,10 @@ static inline int ext4_forced_shutdown(s
  * Structure of a directory entry
  */
 #define EXT4_NAME_LEN 255
+/*
+ * Base length of the ext4 directory entry excluding the name length
+ */
+#define EXT4_BASE_DIR_LEN (sizeof(struct ext4_dir_entry_2) - EXT4_NAME_LEN)
 
 struct ext4_dir_entry {
 	__le32	inode;			/* Inode number */
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1388,10 +1388,10 @@ int ext4_search_dir(struct buffer_head *
 
 	de = (struct ext4_dir_entry_2 *)search_buf;
 	dlimit = search_buf + buf_size;
-	while ((char *) de < dlimit) {
+	while ((char *) de < dlimit - EXT4_BASE_DIR_LEN) {
 		/* this code is executed quadratically often */
 		/* do minimal checking `by hand' */
-		if ((char *) de + de->name_len <= dlimit &&
+		if (de->name + de->name_len <= dlimit &&
 		    ext4_match(dir, fname, de)) {
 			/* found a match - just to be sure, do
 			 * a full check */

[PATCH 5.10 77/86] ext4: limit length to bitmap_maxbytes - blocksize in punch_hole

[Greg Kroah-Hartman]

From: Tadeusz Struk <tadeusz.struk@linaro.org>

commit 2da376228a2427501feb9d15815a45dbdbdd753e upstream.

Syzbot found an issue [1] in ext4_fallocate().
The C reproducer [2] calls fallocate(), passing size 0xffeffeff000ul,
and offset 0x1000000ul, which, when added together exceed the
bitmap_maxbytes for the inode. This triggers a BUG in
ext4_ind_remove_space(). According to the comments in this function
the 'end' parameter needs to be one block after the last block to be
removed. In the case when the BUG is triggered it points to the last
block. Modify the ext4_punch_hole() function and add constraint that
caps the length to satisfy the one before laster block requirement.

LINK: [1] https://syzkaller.appspot.com/bug?id=b80bd9cf348aac724a4f4dff251800106d721331
LINK: [2] https://syzkaller.appspot.com/text?tag=ReproC&x=14ba0238700000

Fixes: a4bb6b64e39a ("ext4: enable "punch hole" functionality")
Reported-by: syzbot+7a806094edd5d07ba029@syzkaller.appspotmail.com
Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Link: https://lore.kernel.org/r/20220331200515.153214-1-tadeusz.struk@linaro.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/inode.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4034,7 +4034,8 @@ int ext4_punch_hole(struct file *file, l
 	struct super_block *sb = inode->i_sb;
 	ext4_lblk_t first_block, stop_block;
 	struct address_space *mapping = inode->i_mapping;
-	loff_t first_block_offset, last_block_offset;
+	loff_t first_block_offset, last_block_offset, max_length;
+	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
 	handle_t *handle;
 	unsigned int credits;
 	int ret = 0, ret2 = 0;
@@ -4077,6 +4078,14 @@ int ext4_punch_hole(struct file *file, l
 		   offset;
 	}
 
+	/*
+	 * For punch hole the length + offset needs to be within one block
+	 * before last range. Adjust the length if it goes beyond that limit.
+	 */
+	max_length = sbi->s_bitmap_maxbytes - inode->i_sb->s_blocksize;
+	if (offset + length > max_length)
+		length = max_length - offset;
+
 	if (offset & (sb->s_blocksize - 1) ||
 	    (offset + length) & (sb->s_blocksize - 1)) {
 		/*

[PATCH 5.10 78/86] ext4, doc: fix incorrect h_reserved size

[Greg Kroah-Hartman]

From: wangjianjian (C) <wangjianjian3@huawei.com>

commit 7102ffe4c166ca0f5e35137e9f9de83768c2d27d upstream.

According to document and code, ext4_xattr_header's size is 32 bytes, so
h_reserved size should be 3.

Signed-off-by: Wang Jianjian <wangjianjian3@huawei.com>
Link: https://lore.kernel.org/r/92fcc3a6-7d77-8c09-4126-377fcb4c46a5@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 Documentation/filesystems/ext4/attributes.rst |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/Documentation/filesystems/ext4/attributes.rst
+++ b/Documentation/filesystems/ext4/attributes.rst
@@ -76,7 +76,7 @@ The beginning of an extended attribute b
      - Checksum of the extended attribute block.
    * - 0x14
      - \_\_u32
-     - h\_reserved[2]
+     - h\_reserved[3]
      - Zero.
 
 The checksum is calculated against the FS UUID, the 64-bit block number

[PATCH 5.10 79/86] ext4: fix overhead calculation to account for the reserved gdt blocks

[Greg Kroah-Hartman]

From: Theodore Ts'o <tytso@mit.edu>

commit 10b01ee92df52c8d7200afead4d5e5f55a5c58b1 upstream.

The kernel calculation was underestimating the overhead by not taking
into account the reserved gdt blocks.  With this change, the overhead
calculated by the kernel matches the overhead calculation in mke2fs.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/super.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3870,9 +3870,11 @@ static int count_overhead(struct super_b
 	ext4_fsblk_t		first_block, last_block, b;
 	ext4_group_t		i, ngroups = ext4_get_groups_count(sb);
 	int			s, j, count = 0;
+	int			has_super = ext4_bg_has_super(sb, grp);
 
 	if (!ext4_has_feature_bigalloc(sb))
-		return (ext4_bg_has_super(sb, grp) + ext4_bg_num_gdb(sb, grp) +
+		return (has_super + ext4_bg_num_gdb(sb, grp) +
+			(has_super ? le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) : 0) +
 			sbi->s_itb_per_group + 2);
 
 	first_block = le32_to_cpu(sbi->s_es->s_first_data_block) +

[PATCH 5.10 80/86] ext4: force overhead calculation if the s_overhead_cluster makes no sense

[Greg Kroah-Hartman]

From: Theodore Ts'o <tytso@mit.edu>

commit 85d825dbf4899a69407338bae462a59aa9a37326 upstream.

If the file system does not use bigalloc, calculating the overhead is
cheap, so force the recalculation of the overhead so we don't have to
trust the precalculated overhead in the superblock.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/super.c |   15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4933,9 +4933,18 @@ no_journal:
 	 * Get the # of file system overhead blocks from the
 	 * superblock if present.
 	 */
-	if (es->s_overhead_clusters)
-		sbi->s_overhead = le32_to_cpu(es->s_overhead_clusters);
-	else {
+	sbi->s_overhead = le32_to_cpu(es->s_overhead_clusters);
+	/* ignore the precalculated value if it is ridiculous */
+	if (sbi->s_overhead > ext4_blocks_count(es))
+		sbi->s_overhead = 0;
+	/*
+	 * If the bigalloc feature is not enabled recalculating the
+	 * overhead doesn't take long, so we might as well just redo
+	 * it to make sure we are using the correct value.
+	 */
+	if (!ext4_has_feature_bigalloc(sb))
+		sbi->s_overhead = 0;
+	if (sbi->s_overhead == 0) {
 		err = ext4_calculate_overhead(sb);
 		if (err)
 			goto failed_mount_wq;

[PATCH 5.10 81/86] can: isotp: stop timeout monitoring when no first frame was sent

[Greg Kroah-Hartman]

From: Oliver Hartkopp <socketcan@hartkopp.net>

commit d73497081710c876c3c61444445512989e102152 upstream.

The first attempt to fix a the 'impossible' WARN_ON_ONCE(1) in
isotp_tx_timer_handler() focussed on the identical CAN IDs created by
the syzbot reproducer and lead to upstream fix/commit 3ea566422cbd
("can: isotp: sanitize CAN ID checks in isotp_bind()"). But this did
not catch the root cause of the wrong tx.state in the tx_timer handler.

In the isotp 'first frame' case a timeout monitoring needs to be started
before the 'first frame' is send. But when this sending failed the timeout
monitoring for this specific frame has to be disabled too.

Otherwise the tx_timer is fired with the 'warn me' tx.state of ISOTP_IDLE.

Fixes: e057dd3fc20f ("can: add ISO 15765-2:2016 transport protocol")
Link: https://lore.kernel.org/all/20220405175112.2682-1-socketcan@hartkopp.net
Reported-by: syzbot+2339c27f5c66c652843e@syzkaller.appspotmail.com
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/can/isotp.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -864,6 +864,7 @@ static int isotp_sendmsg(struct socket *
 	struct canfd_frame *cf;
 	int ae = (so->opt.flags & CAN_ISOTP_EXTEND_ADDR) ? 1 : 0;
 	int wait_tx_done = (so->opt.flags & CAN_ISOTP_WAIT_TX_DONE) ? 1 : 0;
+	s64 hrtimer_sec = 0;
 	int off;
 	int err;
 
@@ -962,7 +963,9 @@ static int isotp_sendmsg(struct socket *
 		isotp_create_fframe(cf, so, ae);
 
 		/* start timeout for FC */
-		hrtimer_start(&so->txtimer, ktime_set(1, 0), HRTIMER_MODE_REL_SOFT);
+		hrtimer_sec = 1;
+		hrtimer_start(&so->txtimer, ktime_set(hrtimer_sec, 0),
+			      HRTIMER_MODE_REL_SOFT);
 	}
 
 	/* send the first or only CAN frame */
@@ -975,6 +978,11 @@ static int isotp_sendmsg(struct socket *
 	if (err) {
 		pr_notice_once("can-isotp: %s: can_send_ret %d\n",
 			       __func__, err);
+
+		/* no transmission -> no timeout monitoring */
+		if (hrtimer_sec)
+			hrtimer_cancel(&so->txtimer);
+
 		goto err_out_drop;
 	}
 

[PATCH 5.10 82/86] jbd2: fix a potential race while discarding reserved buffers after an abort

[Greg Kroah-Hartman]

From: Ye Bin <yebin10@huawei.com>

commit 23e3d7f7061f8682c751c46512718f47580ad8f0 upstream.

we got issue as follows:
[   72.796117] EXT4-fs error (device sda): ext4_journal_check_start:83: comm fallocate: Detected aborted journal
[   72.826847] EXT4-fs (sda): Remounting filesystem read-only
fallocate: fallocate failed: Read-only file system
[   74.791830] jbd2_journal_commit_transaction: jh=0xffff9cfefe725d90 bh=0x0000000000000000 end delay
[   74.793597] ------------[ cut here ]------------
[   74.794203] kernel BUG at fs/jbd2/transaction.c:2063!
[   74.794886] invalid opcode: 0000 [#1] PREEMPT SMP PTI
[   74.795533] CPU: 4 PID: 2260 Comm: jbd2/sda-8 Not tainted 5.17.0-rc8-next-20220315-dirty #150
[   74.798327] RIP: 0010:__jbd2_journal_unfile_buffer+0x3e/0x60
[   74.801971] RSP: 0018:ffffa828c24a3cb8 EFLAGS: 00010202
[   74.802694] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   74.803601] RDX: 0000000000000001 RSI: ffff9cfefe725d90 RDI: ffff9cfefe725d90
[   74.804554] RBP: ffff9cfefe725d90 R08: 0000000000000000 R09: ffffa828c24a3b20
[   74.805471] R10: 0000000000000001 R11: 0000000000000001 R12: ffff9cfefe725d90
[   74.806385] R13: ffff9cfefe725d98 R14: 0000000000000000 R15: ffff9cfe833a4d00
[   74.807301] FS:  0000000000000000(0000) GS:ffff9d01afb00000(0000) knlGS:0000000000000000
[   74.808338] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.809084] CR2: 00007f2b81bf4000 CR3: 0000000100056000 CR4: 00000000000006e0
[   74.810047] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   74.810981] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   74.811897] Call Trace:
[   74.812241]  <TASK>
[   74.812566]  __jbd2_journal_refile_buffer+0x12f/0x180
[   74.813246]  jbd2_journal_refile_buffer+0x4c/0xa0
[   74.813869]  jbd2_journal_commit_transaction.cold+0xa1/0x148
[   74.817550]  kjournald2+0xf8/0x3e0
[   74.819056]  kthread+0x153/0x1c0
[   74.819963]  ret_from_fork+0x22/0x30

Above issue may happen as follows:
        write                   truncate                   kjournald2
generic_perform_write
 ext4_write_begin
  ext4_walk_page_buffers
   do_journal_get_write_access ->add BJ_Reserved list
 ext4_journalled_write_end
  ext4_walk_page_buffers
   write_end_fn
    ext4_handle_dirty_metadata
                ***************JBD2 ABORT**************
     jbd2_journal_dirty_metadata
 -> return -EROFS, jh in reserved_list
                                                   jbd2_journal_commit_transaction
                                                    while (commit_transaction->t_reserved_list)
                                                      jh = commit_transaction->t_reserved_list;
                        truncate_pagecache_range
                         do_invalidatepage
			  ext4_journalled_invalidatepage
			   jbd2_journal_invalidatepage
			    journal_unmap_buffer
			     __dispose_buffer
			      __jbd2_journal_unfile_buffer
			       jbd2_journal_put_journal_head ->put last ref_count
			        __journal_remove_journal_head
				 bh->b_private = NULL;
				 jh->b_bh = NULL;
				                      jbd2_journal_refile_buffer(journal, jh);
							bh = jh2bh(jh);
							->bh is NULL, later will trigger null-ptr-deref
				 journal_free_journal_head(jh);

After commit 96f1e0974575, we no longer hold the j_state_lock while
iterating over the list of reserved handles in
jbd2_journal_commit_transaction().  This potentially allows the
journal_head to be freed by journal_unmap_buffer while the commit
codepath is also trying to free the BJ_Reserved buffers.  Keeping
j_state_lock held while trying extends hold time of the lock
minimally, and solves this issue.

Fixes: 96f1e0974575("jbd2: avoid long hold times of j_state_lock while committing a transaction")
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220317142137.1821590-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/jbd2/commit.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -501,7 +501,6 @@ void jbd2_journal_commit_transaction(jou
 	}
 	spin_unlock(&commit_transaction->t_handle_lock);
 	commit_transaction->t_state = T_SWITCH;
-	write_unlock(&journal->j_state_lock);
 
 	J_ASSERT (atomic_read(&commit_transaction->t_outstanding_credits) <=
 			journal->j_max_transaction_buffers);
@@ -521,6 +520,8 @@ void jbd2_journal_commit_transaction(jou
 	 * has reserved.  This is consistent with the existing behaviour
 	 * that multiple jbd2_journal_get_write_access() calls to the same
 	 * buffer are perfectly permissible.
+	 * We use journal->j_state_lock here to serialize processing of
+	 * t_reserved_list with eviction of buffers from journal_unmap_buffer().
 	 */
 	while (commit_transaction->t_reserved_list) {
 		jh = commit_transaction->t_reserved_list;
@@ -540,6 +541,7 @@ void jbd2_journal_commit_transaction(jou
 		jbd2_journal_refile_buffer(journal, jh);
 	}
 
+	write_unlock(&journal->j_state_lock);
 	/*
 	 * Now try to drop any written-back buffers from the journal's
 	 * checkpoint lists.  We do this *before* commit because it potentially

[PATCH 5.10 83/86] spi: atmel-quadspi: Fix the buswidth adjustment between spi-mem and controller

[Greg Kroah-Hartman]

From: Tudor Ambarus <tudor.ambarus@microchip.com>

commit 8c235cc25087495c4288d94f547e9d3061004991 upstream.

Use the spi_mem_default_supports_op() core helper in order to take into
account the buswidth specified by the user in device tree.

Cc: <stable@vger.kernel.org>
Fixes: 0e6aae08e9ae ("spi: Add QuadSPI driver for Atmel SAMA5D2")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20220406133604.455356-1-tudor.ambarus@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/spi/atmel-quadspi.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -277,6 +277,9 @@ static int atmel_qspi_find_mode(const st
 static bool atmel_qspi_supports_op(struct spi_mem *mem,
 				   const struct spi_mem_op *op)
 {
+	if (!spi_mem_default_supports_op(mem, op))
+		return false;
+
 	if (atmel_qspi_find_mode(op) < 0)
 		return false;
 

[PATCH 5.10 84/86] staging: ion: Prevent incorrect reference counting behavour

[Greg Kroah-Hartman]

Supply additional check in order to prevent unexpected results.

Fixes: b892bf75b2034 ("ion: Switch ion to use dma-buf")
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/android/ion/ion.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -114,6 +114,9 @@ static void *ion_buffer_kmap_get(struct
 	void *vaddr;
 
 	if (buffer->kmap_cnt) {
+		if (buffer->kmap_cnt == INT_MAX)
+			return ERR_PTR(-EOVERFLOW);
+
 		buffer->kmap_cnt++;
 		return buffer->vaddr;
 	}

[PATCH 5.10 85/86] block/compat_ioctl: fix range check in BLKGETSIZE

[Greg Kroah-Hartman]

From: Khazhismel Kumykov <khazhy@google.com>

commit ccf16413e520164eb718cf8b22a30438da80ff23 upstream.

kernel ulong and compat_ulong_t may not be same width. Use type directly
to eliminate mismatches.

This would result in truncation rather than EFBIG for 32bit mode for
large disks.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220414224056.2875681-1-khazhy@google.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 block/ioctl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -679,7 +679,7 @@ long compat_blkdev_ioctl(struct file *fi
 			       (bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512);
 	case BLKGETSIZE:
 		size = i_size_read(bdev->bd_inode);
-		if ((size >> 9) > ~0UL)
+		if ((size >> 9) > ~(compat_ulong_t)0)
 			return -EFBIG;
 		return compat_put_ulong(argp, size >> 9);
 

[PATCH 5.10 86/86] Revert "net: micrel: fix KS8851_MLL Kconfig"

[Greg Kroah-Hartman]

From: Marek Vasut <marex@denx.de>

This reverts commit 1ff5359afa5ec0dd09fe76183dc4fa24b50e4125 which is
commit c3efcedd272aa6dd5929e20cf902a52ddaa1197a upstream.

The upstream commit c3efcedd272a ("net: micrel: fix KS8851_MLL Kconfig")
depends on e5f31552674e ("ethernet: fix PTP_1588_CLOCK dependencies")
which is not part of Linux 5.10.y . Revert the aforementioned commit to
prevent breakage in 5.10.y .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Sasha Levin <sashal@kernel.org>
Cc: <stable@vger.kernel.org> # 5.10.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/micrel/Kconfig |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/net/ethernet/micrel/Kconfig
+++ b/drivers/net/ethernet/micrel/Kconfig
@@ -37,7 +37,6 @@ config KS8851
 config KS8851_MLL
 	tristate "Micrel KS8851 MLL"
 	depends on HAS_IOMEM
-	depends on PTP_1588_CLOCK_OPTIONAL
 	select MII
 	select CRC32
 	select EEPROM_93CX6

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Jon Hunter]

On Tue, 26 Apr 2022 10:20:28 +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +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/v5.x/stable-review/patch-5.10.113-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-5.10.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

All tests passing for Tegra ...

Test results for stable-v5.10:
    10 builds:	10 pass, 0 fail
    28 boots:	28 pass, 0 fail
    75 tests:	75 pass, 0 fail

Linux version:	5.10.113-rc1-g889ce55360e7
Boards tested:	tegra124-jetson-tk1, tegra186-p2771-0000,
                tegra194-p2972-0000, tegra194-p3509-0000+p3668-0000,
                tegra20-ventana, tegra210-p2371-2180,
                tegra210-p3450-0000, tegra30-cardhu-a04

Tested-by: Jon Hunter <jonathanh@nvidia.com>

Jon

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Florian Fainelli]

On 4/26/22 01:20, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +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/v5.x/stable-review/patch-5.10.113-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-5.10.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

On ARCH_BRCMSTB using 32-bit and 64-bit ARM kernels:

Tested-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Pavel Machek]

[-- Attachment #1: Type: text/plain, Size: 785 bytes --]

Hi!

> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +0000.
> Anything received after that time might be too late.

CIP testing did not find any problems here:

https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/tree/linux-5.10.y

Tested-by: Pavel Machek (CIP) <pavel@denx.de>

Best regards,
                                                                Pavel
-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Guenter Roeck]

On Tue, Apr 26, 2022 at 10:20:28AM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +0000.
> Anything received after that time might be too late.
> 

Build results:
	total: 161 pass: 161 fail: 0
Qemu test results:
	total: 477 pass: 477 fail: 0

Tested-by: Guenter Roeck <linux@roeck-us.net>

Guenter

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Shuah Khan]

On 4/26/22 2:20 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +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/v5.x/stable-review/patch-5.10.113-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-5.10.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

Compiled and booted on my test system. No dmesg regressions.

Tested-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Slade Watkins]

On Tue, Apr 26, 2022, at 4:20 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +0000.
> Anything received after that time might be too late.

5.10.113-rc1 compiled and booted with no errors or regressions on my x86_64 test system.

Tested-by: Slade Watkins <slade@sladewatkins.com>

Cheers, 
Slade

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Naresh Kamboju]

On Tue, 26 Apr 2022 at 14:03, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +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/v5.x/stable-review/patch-5.10.113-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-5.10.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.

Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>

## Build
* kernel: 5.10.113-rc1
* git: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
* git branch: linux-5.10.y
* git commit: 889ce55360e75088d2b85d71e5119d5e3d45c90c
* git describe: v5.10.112-87-g889ce55360e7
* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.10.y/build/v5.10.112-87-g889ce55360e7

## Test Regressions (compared to v5.10.111-106-gd5c581fe77b5)
No test regressions found.

## Metric Regressions (compared to v5.10.111-106-gd5c581fe77b5)
No metric regressions found.

## Test Fixes (compared to v5.10.111-106-gd5c581fe77b5)
No test fixes found.

## Metric Fixes (compared to v5.10.111-106-gd5c581fe77b5)
No metric fixes found.

## Test result summary
total: 99479, pass: 83784, fail: 947, skip: 13672, xfail: 1076

## Build Summary
* arc: 10 total, 10 passed, 0 failed
* arm: 291 total, 291 passed, 0 failed
* arm64: 41 total, 41 passed, 0 failed
* dragonboard-410c: 1 total, 1 passed, 0 failed
* hi6220-hikey: 1 total, 1 passed, 0 failed
* i386: 40 total, 40 passed, 0 failed
* juno-r2: 1 total, 1 passed, 0 failed
* mips: 37 total, 37 passed, 0 failed
* parisc: 12 total, 12 passed, 0 failed
* powerpc: 60 total, 51 passed, 9 failed
* riscv: 27 total, 27 passed, 0 failed
* s390: 21 total, 21 passed, 0 failed
* sh: 24 total, 24 passed, 0 failed
* sparc: 12 total, 12 passed, 0 failed
* x15: 1 total, 1 passed, 0 failed
* x86: 1 total, 1 passed, 0 failed
* x86_64: 41 total, 41 passed, 0 failed

## Test suites summary
* fwts
* igt-gpu-tools
* kselftest-android
* kselftest-arm64
* kselftest-bpf
* kselftest-breakpoints
* kselftest-capabilities
* kselftest-cgroup
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-cpufreq
* kselftest-drivers
* kselftest-efivarfs
* kselftest-filesystems
* kselftest-firmware
* kselftest-fpu
* kselftest-futex
* kselftest-gpio
* kselftest-intel_pstate
* kselftest-ipc
* kselftest-ir
* kselftest-kcmp
* kselftest-kexec
* kselftest-kvm
* kselftest-lib
* kselftest-livepatch
* kselftest-membarrier
* kselftest-memfd
* kselftest-memory-hotplug
* kselftest-mincore
* kselftest-mount
* kselftest-mqueue
* kselftest-net
* kselftest-netfilter
* kselftest-nsfs
* kselftest-openat2
* kselftest-pid_namespace
* kselftest-pidfd
* kselftest-proc
* kselftest-pstore
* kselftest-ptrace
* kselftest-rseq
* kselftest-rtc
* kselftest-seccomp
* kselftest-sigaltstack
* kselftest-size
* kselftest-splice
* kselftest-static_keys
* kselftest-sync
* kselftest-sysctl
* kselftest-tc-testing
* kselftest-timens
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user
* kselftest-vm
* kselftest-x86
* kselftest-zram
* kunit
* kvm-unit-tests
* libgpiod
* libhugetlbfs
* linux-log-parser
* ltp-cap_bounds-tests
* ltp-commands-tests
* ltp-containers-tests
* ltp-controllers-tests
* ltp-cpuhotplug-tests
* ltp-crypto-tests
* ltp-cve-tests
* ltp-dio-tests
* ltp-fcntl-locktests-tests
* ltp-filecaps-tests
* ltp-fs-tests
* ltp-fs_bind-tests
* ltp-fs_perms_simple-tests
* ltp-fsx-tests
* ltp-hugetlb-tests
* ltp-io-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-nptl-tests
* ltp-open-posix-tests
* ltp-pty-tests
* ltp-sched-tests
* ltp-securebits-tests
* ltp-syscalls-tests
* ltp-tracing-tests
* network-basic-tests
* packetdrill
* perf
* perf/Zstd-perf.data-compression
* rcutorture
* ssuite
* v4l2-compliance
* vdso

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

Re: [PATCH 5.10 00/86] 5.10.113-rc1 review

[Sudip Mukherjee]

Hi Greg,

On Tue, Apr 26, 2022 at 10:20:28AM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.113 release.
> There are 86 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 Thu, 28 Apr 2022 08:17:22 +0000.
> Anything received after that time might be too late.

Build test:
mips (gcc version 11.2.1 20220408): 63 configs -> no failure
arm (gcc version 11.2.1 20220408): 105 configs -> no new failure
arm64 (gcc version 11.2.1 20220408): 3 configs -> no failure
x86_64 (gcc version 11.2.1 20220408): 4 configs -> no failure

Boot test:
x86_64: Booted on my test laptop. No regression.
x86_64: Booted on qemu. No regression. [1]
arm64: Booted on rpi4b (4GB model). No regression. [2]

[1]. https://openqa.qa.codethink.co.uk/tests/1070
[2]. https://openqa.qa.codethink.co.uk/tests/1072


Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>

--
Regards
Sudip

Re: [PATCH 5.10 14/86] dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources

[Pavel Machek]

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Hi!

> pm_runtime_get_sync will increment pm usage counter even it failed.
> Forgetting to putting operation will result in reference leak here.
> We fix it:
> 1) Replacing it with pm_runtime_resume_and_get to keep usage counter
>    balanced.

Suspect.

> 2) Add putting operation before returning error.

Yes but you also put in success case, which is likely
wrong. mtk_uart_apdma_free_chan_resources() does second put.

> +++ b/drivers/dma/mediatek/mtk-uart-apdma.c
> @@ -274,7 +274,7 @@ static int mtk_uart_apdma_alloc_chan_resources(struct dma_chan *chan)
>  	unsigned int status;
>  	int ret;
>  
> -	ret = pm_runtime_get_sync(mtkd->ddev.dev);
> +	ret = pm_runtime_resume_and_get(mtkd->ddev.dev);
>  	if (ret < 0) {
>  		pm_runtime_put_noidle(chan->device->dev);
>  		return ret;


This is suspect, too. What is the put_noidle doing there? Seems like
it was meant to undo the get_sync operation, but uses different
argument?

> @@ -288,18 +288,21 @@ static int mtk_uart_apdma_alloc_chan_resources(struct dma_chan *chan)
>  
>  	if (mtkd->support_33bits)
>  		mtk_uart_apdma_write(c, VFF_4G_SUPPORT, VFF_4G_SUPPORT_CLR_B);
>  
> +err_pm:
> +	pm_runtime_put_noidle(mtkd->ddev.dev);
>  	return ret;
>  }

This should only be done in error case.

Best regards,
								Pavel
-- 
People of Russia, stop Putin before his war on Ukraine escalates.

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Re: [PATCH 5.10 14/86] dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources

[Pavel Machek]

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Hi!

> > pm_runtime_get_sync will increment pm usage counter even it failed.
> > Forgetting to putting operation will result in reference leak here.
> > We fix it:
> > 1) Replacing it with pm_runtime_resume_and_get to keep usage counter
> >    balanced.
> 
> Suspect.
> 
> > 2) Add putting operation before returning error.
> 
> Yes but you also put in success case, which is likely
> wrong. mtk_uart_apdma_free_chan_resources() does second put.

This is possible fix for the second problem:

Signed-off-by: Pavel Machek <pavel@denx.de>

diff --git a/drivers/dma/mediatek/mtk-uart-apdma.c b/drivers/dma/mediatek/mtk-uart-apdma.c
index a1517ef1f4a0..8ec046a7e714 100644
--- a/drivers/dma/mediatek/mtk-uart-apdma.c
+++ b/drivers/dma/mediatek/mtk-uart-apdma.c
@@ -300,7 +300,8 @@ static int mtk_uart_apdma_alloc_chan_resources(struct dma_chan *chan)
 
 	if (mtkd->support_33bits)
 		mtk_uart_apdma_write(c, VFF_4G_SUPPORT, VFF_4G_SUPPORT_CLR_B);
-
+	return 0;
+	
 err_pm:
 	pm_runtime_put_noidle(mtkd->ddev.dev);
 	return ret;

Best regards,
								Pavel

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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