[PATCH 4.14 00/91] 4.14.39-stable review

[PATCH 4.14 00/91] 4.14.39-stable review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 4.14.39 release.
There are 91 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Wed May  2 18:39:37 UTC 2018.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.39-rc1.gz
or in the git tree and branch at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 4.14.39-rc1

Nicolas Dichtel <nicolas.dichtel@6wind.com>
    net: don't call update_pmtu unconditionally

Michael Neuling <mikey@neuling.org>
    powerpc/eeh: Fix race with driver un/bind

Marc Zyngier <marc.zyngier@arm.com>
    arm/arm64: KVM: Add PSCI version selection API

Thomas Gleixner <tglx@linutronix.de>
    tick/sched: Do not mess with an enqueued hrtimer

Borislav Petkov <bp@suse.de>
    x86/microcode: Do not exit early from __reload_late()

Borislav Petkov <bp@suse.de>
    x86/microcode/intel: Save microcode patch unconditionally

Yazen Ghannam <yazen.ghannam@amd.com>
    x86/smpboot: Don't use mwait_play_dead() on AMD systems

Arnd Bergmann <arnd@arndb.de>
    x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds

Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
    tools/lib/subcmd/pager.c: do not alias select() params

Josh Poimboeuf <jpoimboe@redhat.com>
    objtool, perf: Fix GCC 8 -Wrestrict error

Imre Deak <imre.deak@intel.com>
    drm/i915: Enable display WA#1183 from its correct spot

Nicolai Hähnle <nicolai.haehnle@amd.com>
    drm/amdgpu: set COMPUTE_PGM_RSRC1 for SGPR/VGPR clearing shaders

Nicholas Piggin <npiggin@gmail.com>
    rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops

Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
    cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt

Daniel Kurtz <djkurtz@chromium.org>
    earlycon: Use a pointer table to fix __earlycon_table stride

Anatolij Gustschin <agust@denx.de>
    fpga-manager: altera-ps-spi: preserve nCONFIG state

Ilya Dryomov <idryomov@gmail.com>
    libceph: validate con->state at the top of try_write()

Ilya Dryomov <idryomov@gmail.com>
    libceph: reschedule a tick in finish_hunting()

Ilya Dryomov <idryomov@gmail.com>
    libceph: un-backoff on tick when we have a authenticated session

Nicolin Chen <nicoleotsuka@gmail.com>
    ASoC: fsl_esai: Fix divisor calculation failure at lower ratio

Stephan Mueller <smueller@chronox.de>
    crypto: drbg - set freed buffers to NULL

Alistair Popple <alistair@popple.id.au>
    powerpc/powernv/npu: Do a PID GPU TLB flush when invalidating a large address range

Balbir Singh <bsingharora@gmail.com>
    powerpc/mm: Flush cache on memory hot(un)plug

Marc Zyngier <marc.zyngier@arm.com>
    KVM: arm/arm64: Close VMID generation race

Thor Thayer <thor.thayer@linux.intel.com>
    ARM: socfpga_defconfig: Remove QSPI Sector 4K size force

Geert Uytterhoeven <geert+renesas@glider.be>
    ARM: amba: Don't read past the end of sysfs "driver_override" buffer

Geert Uytterhoeven <geert+renesas@glider.be>
    ARM: amba: Fix race condition with driver_override

Geert Uytterhoeven <geert+renesas@glider.be>
    ARM: amba: Make driver_override output consistent with other buses

Evan Wang <xswang@marvell.com>
    PCI: aardvark: Fix PCIe Max Read Request Size setting

Victor Gu <xigu@marvell.com>
    PCI: aardvark: Use ISR1 instead of ISR0 interrupt in legacy irq mode

Victor Gu <xigu@marvell.com>
    PCI: aardvark: Set PIO_ADDR_LS correctly in advk_pcie_rd_conf()

Victor Gu <xigu@marvell.com>
    PCI: aardvark: Fix logic in advk_pcie_{rd,wr}_conf()

Martijn Coenen <maco@android.com>
    ANDROID: binder: prevent transactions into own process.

Cornelia Huck <cohuck@redhat.com>
    vfio: ccw: process ssch with interrupts disabled

Jens Axboe <axboe@kernel.dk>
    bfq-iosched: ensure to clear bic/bfqq pointers when preparing request

Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
    scsi: sd: Defer spinning up drive while SANITIZE is in progress

Dmitry Vyukov <dvyukov@google.com>
    kobject: don't use WARN for registration failures

Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
    mtd: rawnand: tango: Fix struct clk memory leak

Joakim Tjernlund <joakim.tjernlund@infinera.com>
    mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.

Joakim Tjernlund <joakim.tjernlund@transmode.se>
    mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.

Joakim Tjernlund <joakim.tjernlund@transmode.se>
    mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.

Thor Thayer <thor.thayer@linux.intel.com>
    mtd: spi-nor: cadence-quadspi: Fix page fault kernel panic

Kailang Yang <kailang@realtek.com>
    ALSA: hda/realtek - change the location for one of two front mics

Kailang Yang <kailang@realtek.com>
    ALSA: hda/realtek - Update ALC255 depop optimize

Kailang Yang <kailang@realtek.com>
    ALSA: hda/realtek - Add some fixes for ALC233

Takashi Iwai <tiwai@suse.de>
    ALSA: hda: Hardening for potential Spectre v1

Takashi Iwai <tiwai@suse.de>
    ALSA: seq: oss: Hardening for potential Spectre v1

Takashi Iwai <tiwai@suse.de>
    ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device

David Henningsson <diwic@ubuntu.com>
    ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr

Jeffery Miller <jmiller@neverware.com>
    ALSA: pcm: Return negative delays from SNDRV_PCM_IOCTL_DELAY.

Takashi Iwai <tiwai@suse.de>
    ALSA: control: Hardening for potential Spectre v1

Takashi Iwai <tiwai@suse.de>
    ALSA: rme9652: Hardening for potential Spectre v1

Takashi Iwai <tiwai@suse.de>
    ALSA: hdspm: Hardening for potential Spectre v1

Takashi Iwai <tiwai@suse.de>
    ALSA: asihpi: Hardening for potential Spectre v1

Takashi Iwai <tiwai@suse.de>
    ALSA: opl3: Hardening for potential Spectre v1

Takashi Iwai <tiwai@suse.de>
    ALSA: hda - Skip jack and others for non-existing PCM streams

Takashi Sakamoto <o-takashi@sakamocchi.jp>
    ALSA: dice: fix error path to destroy initialized stream data

Takashi Sakamoto <o-takashi@sakamocchi.jp>
    ALSA: dice: fix OUI for TC group

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    tty: Use __GFP_NOFAIL for tty_ldisc_get()

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    tty: Avoid possible error pointer dereference at tty_ldisc_restore().

Tony Lindgren <tony@atomide.com>
    tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set

Tony Lindgren <tony@atomide.com>
    tty: n_gsm: Fix long delays with control frame timeouts in ADM mode

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    tty: Don't call panic() at tty_ldisc_init()

Gerd Hoffmann <kraxel@redhat.com>
    drm/virtio: fix vq wait_event condition

Michael S. Tsirkin <mst@redhat.com>
    virtio_console: reset on out of memory

Michael S. Tsirkin <mst@redhat.com>
    virtio_console: move removal code

Michael S. Tsirkin <mst@redhat.com>
    virtio_console: drop custom control queue cleanup

Michael S. Tsirkin <mst@redhat.com>
    virtio_console: free buffers after reset

Michael S. Tsirkin <mst@redhat.com>
    virtio_console: don't tie bufs to a vq

Michael S. Tsirkin <mst@redhat.com>
    virtio: add ability to iterate over vqs

Takashi Iwai <tiwai@suse.de>
    ALSA: usb-audio: Skip broken EU on Dell dock USB-audio

Ravi Chandra Sadineni <ravisadineni@chromium.org>
    USB: Increment wakeup count on remote wakeup.

Kamil Lulko <kamilx.lulko@intel.com>
    usb: core: Add quirk for HP v222w 16GB Mini

Heikki Krogerus <heikki.krogerus@linux.intel.com>
    usb: typec: ucsi: Increase command completion timeout value

Kyle Roeschley <kyle.roeschley@ni.com>
    USB: serial: cp210x: add ID for NI USB serial console

Vasyl Vavrychuk <vvavrychuk@gmail.com>
    USB: serial: ftdi_sio: use jtag quirk for Arrow USB Blaster

Collin May <collin@collinswebsite.com>
    USB: serial: simple: add libtransistor console

Kai-Heng Feng <kai.heng.feng@canonical.com>
    xhci: Fix USB ports for Dell Inspiron 5775

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Revert "xhci: plat: Register shutdown for xhci_plat"

Shuah Khan <shuah@kernel.org>
    usbip: vhci_hcd: check rhport before using in vhci_hub_control()

Shuah Khan <shuah@kernel.org>
    usbip: vhci_hcd: Fix usb device and sockfd leaks

Shuah Khan <shuah@kernel.org>
    usbip: usbip_host: fix to hold parent lock for device_attach() calls

Shuah Khan <shuah@kernel.org>
    usbip: usbip_event: fix to not print kernel pointer address

Theodore Ts'o <tytso@mit.edu>
    random: rate limit unseeded randomness warnings

Theodore Ts'o <tytso@mit.edu>
    random: fix possible sleeping allocation from irq context

Theodore Ts'o <tytso@mit.edu>
    random: set up the NUMA crng instances after the CRNG is fully initialized

Lukas Czerner <lczerner@redhat.com>
    ext4: fix bitmap position validation

Theodore Ts'o <tytso@mit.edu>
    ext4: add validity checks for bitmap block numbers

Theodore Ts'o <tytso@mit.edu>
    ext4: add MODULE_SOFTDEP to ensure crc32c is included in the initramfs

Theodore Ts'o <tytso@mit.edu>
    ext4: set h_journal if there is a failure starting a reserved handle

Eric Biggers <ebiggers@google.com>
    ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS


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

Diffstat:

 Documentation/virtual/kvm/api.txt         |   9 +-
 Documentation/virtual/kvm/arm/psci.txt    |  30 ++++++
 Makefile                                  |   4 +-
 arch/arm/configs/socfpga_defconfig        |   1 +
 arch/arm/include/asm/kvm_host.h           |   3 +
 arch/arm/include/uapi/asm/kvm.h           |   6 ++
 arch/arm/kvm/guest.c                      |  13 +++
 arch/arm64/include/asm/kvm_host.h         |   3 +
 arch/arm64/include/uapi/asm/kvm.h         |   6 ++
 arch/arm64/kvm/guest.c                    |  14 ++-
 arch/powerpc/kernel/eeh_driver.c          |  61 +++++++-----
 arch/powerpc/mm/mem.c                     |   2 +
 arch/powerpc/platforms/powernv/npu-dma.c  |  23 ++++-
 arch/powerpc/platforms/powernv/opal-rtc.c |   8 +-
 arch/x86/include/uapi/asm/msgbuf.h        |  31 ++++++
 arch/x86/include/uapi/asm/shmbuf.h        |  42 ++++++++
 arch/x86/kernel/cpu/microcode/core.c      |   6 +-
 arch/x86/kernel/cpu/microcode/intel.c     |   2 -
 arch/x86/kernel/smpboot.c                 |   2 +
 block/bfq-iosched.c                       |  10 +-
 crypto/drbg.c                             |   2 +
 drivers/amba/bus.c                        |  17 ++--
 drivers/android/binder.c                  |   8 ++
 drivers/char/random.c                     |  90 ++++++++++++-----
 drivers/char/virtio_console.c             | 157 ++++++++++++++----------------
 drivers/cpufreq/powernv-cpufreq.c         |  14 ++-
 drivers/fpga/altera-ps-spi.c              |   2 +-
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c     |   7 +-
 drivers/gpu/drm/i915/intel_runtime_pm.c   |  11 +--
 drivers/gpu/drm/virtio/virtgpu_vq.c       |   4 +-
 drivers/infiniband/ulp/ipoib/ipoib_cm.c   |   3 +-
 drivers/mtd/chips/cfi_cmdset_0001.c       |  33 ++++++-
 drivers/mtd/chips/cfi_cmdset_0002.c       |   9 +-
 drivers/mtd/nand/tango_nand.c             |   2 +-
 drivers/mtd/spi-nor/cadence-quadspi.c     |  19 +++-
 drivers/net/vxlan.c                       |   6 +-
 drivers/of/fdt.c                          |   7 +-
 drivers/pci/host/pci-aardvark.c           |  53 +++++-----
 drivers/rtc/rtc-opal.c                    |  37 ++++---
 drivers/s390/cio/vfio_ccw_fsm.c           |  19 ++--
 drivers/scsi/sd.c                         |   2 +
 drivers/tty/n_gsm.c                       |  23 ++++-
 drivers/tty/serial/earlycon.c             |   6 +-
 drivers/tty/tty_io.c                      |   5 +-
 drivers/tty/tty_ldisc.c                   |  29 +++---
 drivers/usb/core/hcd.c                    |   1 +
 drivers/usb/core/hub.c                    |  10 +-
 drivers/usb/core/quirks.c                 |   3 +
 drivers/usb/host/xhci-pci.c               |   5 +-
 drivers/usb/host/xhci-plat.c              |   1 -
 drivers/usb/serial/Kconfig                |   1 +
 drivers/usb/serial/cp210x.c               |   1 +
 drivers/usb/serial/ftdi_sio.c             |   3 +-
 drivers/usb/serial/usb-serial-simple.c    |   7 ++
 drivers/usb/typec/ucsi/ucsi.c             |   2 +-
 drivers/usb/usbip/stub_main.c             |   5 +
 drivers/usb/usbip/usbip_common.h          |   2 +-
 drivers/usb/usbip/usbip_event.c           |   4 -
 drivers/usb/usbip/vhci_hcd.c              |  13 +++
 fs/ext4/balloc.c                          |  17 +++-
 fs/ext4/extents.c                         |  16 ++-
 fs/ext4/ialloc.c                          |   7 ++
 fs/ext4/super.c                           |   1 +
 fs/jbd2/transaction.c                     |   1 +
 include/asm-generic/vmlinux.lds.h         |   2 +-
 include/kvm/arm_psci.h                    |  16 ++-
 include/linux/mtd/flashchip.h             |   1 +
 include/linux/serial_core.h               |  21 ++--
 include/linux/tty.h                       |   2 +-
 include/linux/virtio.h                    |   3 +
 include/net/dst.h                         |   8 ++
 include/sound/control.h                   |   7 +-
 kernel/time/tick-sched.c                  |  11 ++-
 lib/kobject.c                             |  12 +--
 net/ceph/messenger.c                      |   7 ++
 net/ceph/mon_client.c                     |  14 ++-
 net/ipv4/ip_tunnel.c                      |   3 +-
 net/ipv4/ip_vti.c                         |   2 +-
 net/ipv6/ip6_tunnel.c                     |   5 +-
 net/ipv6/ip6_vti.c                        |   2 +-
 net/ipv6/sit.c                            |   4 +-
 sound/core/pcm_compat.c                   |   7 +-
 sound/core/pcm_native.c                   |  24 ++---
 sound/core/seq/oss/seq_oss_event.c        |  15 +--
 sound/core/seq/oss/seq_oss_midi.c         |   2 +
 sound/core/seq/oss/seq_oss_synth.c        |  85 +++++++++-------
 sound/core/seq/oss/seq_oss_synth.h        |   3 +-
 sound/drivers/opl3/opl3_synth.c           |   7 +-
 sound/firewire/dice/dice-stream.c         |   2 +-
 sound/firewire/dice/dice.c                |   2 +-
 sound/pci/asihpi/hpimsginit.c             |  13 ++-
 sound/pci/asihpi/hpioctl.c                |   4 +-
 sound/pci/hda/hda_hwdep.c                 |  12 ++-
 sound/pci/hda/patch_hdmi.c                |   9 +-
 sound/pci/hda/patch_realtek.c             |   5 +
 sound/pci/rme9652/hdspm.c                 |  24 +++--
 sound/pci/rme9652/rme9652.c               |   6 +-
 sound/soc/fsl/fsl_esai.c                  |   7 ++
 sound/usb/mixer_maps.c                    |   3 +
 tools/lib/str_error_r.c                   |   2 +-
 tools/lib/subcmd/pager.c                  |   5 +-
 virt/kvm/arm/arm.c                        |  15 ++-
 virt/kvm/arm/psci.c                       |  60 ++++++++++++
 103 files changed, 978 insertions(+), 395 deletions(-)

[PATCH 4.14 01/91] ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Eric Biggers <ebiggers@google.com>

commit 349fa7d6e1935f49bf4161c4900711b2989180a9 upstream.

During the "insert range" fallocate operation, extents starting at the
range offset are shifted "right" (to a higher file offset) by the range
length.  But, as shown by syzbot, it's not validated that this doesn't
cause extents to be shifted beyond EXT_MAX_BLOCKS.  In that case
->ee_block can wrap around, corrupting the extent tree.

Fix it by returning an error if the space between the end of the last
extent and EXT4_MAX_BLOCKS is smaller than the range being inserted.

This bug can be reproduced by running the following commands when the
current directory is on an ext4 filesystem with a 4k block size:

        fallocate -l 8192 file
        fallocate --keep-size -o 0xfffffffe000 -l 4096 -n file
        fallocate --insert-range -l 8192 file

Then after unmounting the filesystem, e2fsck reports corruption.

Reported-by: syzbot+06c885be0edcdaeab40c@syzkaller.appspotmail.com
Fixes: 331573febb6a ("ext4: Add support FALLOC_FL_INSERT_RANGE for fallocate")
Cc: stable@vger.kernel.org # v4.2+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ext4/extents.c |   16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5346,8 +5346,9 @@ ext4_ext_shift_extents(struct inode *ino
 	stop = le32_to_cpu(extent->ee_block);
 
        /*
-	 * In case of left shift, Don't start shifting extents until we make
-	 * sure the hole is big enough to accommodate the shift.
+	* For left shifts, make sure the hole on the left is big enough to
+	* accommodate the shift.  For right shifts, make sure the last extent
+	* won't be shifted beyond EXT_MAX_BLOCKS.
 	*/
 	if (SHIFT == SHIFT_LEFT) {
 		path = ext4_find_extent(inode, start - 1, &path,
@@ -5367,9 +5368,14 @@ ext4_ext_shift_extents(struct inode *ino
 
 		if ((start == ex_start && shift > ex_start) ||
 		    (shift > start - ex_end)) {
-			ext4_ext_drop_refs(path);
-			kfree(path);
-			return -EINVAL;
+			ret = -EINVAL;
+			goto out;
+		}
+	} else {
+		if (shift > EXT_MAX_BLOCKS -
+		    (stop + ext4_ext_get_actual_len(extent))) {
+			ret = -EINVAL;
+			goto out;
 		}
 	}
 

[PATCH 4.14 02/91] ext4: set h_journal if there is a failure starting a reserved handle

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit b2569260d55228b617bd82aba6d0db2faeeb4116 upstream.

If ext4 tries to start a reserved handle via
jbd2_journal_start_reserved(), and the journal has been aborted, this
can result in a NULL pointer dereference.  This is because the fields
h_journal and h_transaction in the handle structure share the same
memory, via a union, so jbd2_journal_start_reserved() will clear
h_journal before calling start_this_handle().  If this function fails
due to an aborted handle, h_journal will still be NULL, and the call
to jbd2_journal_free_reserved() will pass a NULL journal to
sub_reserve_credits().

This can be reproduced by running "kvm-xfstests -c dioread_nolock
generic/475".

Cc: stable@kernel.org # 3.11
Fixes: 8f7d89f36829b ("jbd2: transaction reservation support")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/jbd2/transaction.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -535,6 +535,7 @@ int jbd2_journal_start_reserved(handle_t
 	 */
 	ret = start_this_handle(journal, handle, GFP_NOFS);
 	if (ret < 0) {
+		handle->h_journal = journal;
 		jbd2_journal_free_reserved(handle);
 		return ret;
 	}

[PATCH 4.14 03/91] ext4: add MODULE_SOFTDEP to ensure crc32c is included in the initramfs

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit 7ef79ad52136712172eb0525bf0b462516bf2f93 upstream.

Fixes: a45403b51582 ("ext4: always initialize the crc32c checksum driver")
Reported-by: François Valenduc <francoisvalenduc@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ext4/super.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5865,5 +5865,6 @@ static void __exit ext4_exit_fs(void)
 MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
 MODULE_DESCRIPTION("Fourth Extended Filesystem");
 MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: crc32c");
 module_init(ext4_init_fs)
 module_exit(ext4_exit_fs)

[PATCH 4.14 04/91] ext4: add validity checks for bitmap block numbers

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit 7dac4a1726a9c64a517d595c40e95e2d0d135f6f upstream.

An privileged attacker can cause a crash by mounting a crafted ext4
image which triggers a out-of-bounds read in the function
ext4_valid_block_bitmap() in fs/ext4/balloc.c.

This issue has been assigned CVE-2018-1093.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=199181
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1560782
Reported-by: Wen Xu <wen.xu@gatech.edu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ext4/balloc.c |   16 ++++++++++++++--
 fs/ext4/ialloc.c |    7 +++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -338,20 +338,25 @@ static ext4_fsblk_t ext4_valid_block_bit
 	/* check whether block bitmap block number is set */
 	blk = ext4_block_bitmap(sb, desc);
 	offset = blk - group_first_block;
-	if (!ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
+	if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+	    !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
 		/* bad block bitmap */
 		return blk;
 
 	/* check whether the inode bitmap block number is set */
 	blk = ext4_inode_bitmap(sb, desc);
 	offset = blk - group_first_block;
-	if (!ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
+	if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+	    !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
 		/* bad block bitmap */
 		return blk;
 
 	/* check whether the inode table block number is set */
 	blk = ext4_inode_table(sb, desc);
 	offset = blk - group_first_block;
+	if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+	    EXT4_B2C(sbi, offset + sbi->s_itb_per_group) >= sb->s_blocksize)
+		return blk;
 	next_zero_bit = ext4_find_next_zero_bit(bh->b_data,
 			EXT4_B2C(sbi, offset + EXT4_SB(sb)->s_itb_per_group),
 			EXT4_B2C(sbi, offset));
@@ -417,6 +422,7 @@ struct buffer_head *
 ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
 {
 	struct ext4_group_desc *desc;
+	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	struct buffer_head *bh;
 	ext4_fsblk_t bitmap_blk;
 	int err;
@@ -425,6 +431,12 @@ ext4_read_block_bitmap_nowait(struct sup
 	if (!desc)
 		return ERR_PTR(-EFSCORRUPTED);
 	bitmap_blk = ext4_block_bitmap(sb, desc);
+	if ((bitmap_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
+	    (bitmap_blk >= ext4_blocks_count(sbi->s_es))) {
+		ext4_error(sb, "Invalid block bitmap block %llu in "
+			   "block_group %u", bitmap_blk, block_group);
+		return ERR_PTR(-EFSCORRUPTED);
+	}
 	bh = sb_getblk(sb, bitmap_blk);
 	if (unlikely(!bh)) {
 		ext4_error(sb, "Cannot get buffer for block bitmap - "
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -122,6 +122,7 @@ static struct buffer_head *
 ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
 {
 	struct ext4_group_desc *desc;
+	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	struct buffer_head *bh = NULL;
 	ext4_fsblk_t bitmap_blk;
 	int err;
@@ -131,6 +132,12 @@ ext4_read_inode_bitmap(struct super_bloc
 		return ERR_PTR(-EFSCORRUPTED);
 
 	bitmap_blk = ext4_inode_bitmap(sb, desc);
+	if ((bitmap_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
+	    (bitmap_blk >= ext4_blocks_count(sbi->s_es))) {
+		ext4_error(sb, "Invalid inode bitmap blk %llu in "
+			   "block_group %u", bitmap_blk, block_group);
+		return ERR_PTR(-EFSCORRUPTED);
+	}
 	bh = sb_getblk(sb, bitmap_blk);
 	if (unlikely(!bh)) {
 		ext4_error(sb, "Cannot read inode bitmap - "

[PATCH 4.14 05/91] ext4: fix bitmap position validation

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Lukas Czerner <lczerner@redhat.com>

commit 22be37acce25d66ecf6403fc8f44df9c5ded2372 upstream.

Currently in ext4_valid_block_bitmap() we expect the bitmap to be
positioned anywhere between 0 and s_blocksize clusters, but that's
wrong because the bitmap can be placed anywhere in the block group. This
causes false positives when validating bitmaps on perfectly valid file
system layouts. Fix it by checking whether the bitmap is within the group
boundary.

The problem can be reproduced using the following

mkfs -t ext3 -E stride=256 /dev/vdb1
mount /dev/vdb1 /mnt/test
cd /mnt/test
wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.16.3.tar.xz
tar xf linux-4.16.3.tar.xz

This will result in the warnings in the logs

EXT4-fs error (device vdb1): ext4_validate_block_bitmap:399: comm tar: bg 84: block 2774529: invalid block bitmap

[ Changed slightly for clarity and to not drop a overflow test -- TYT ]

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Ilya Dryomov <idryomov@gmail.com>
Fixes: 7dac4a1726a9 ("ext4: add validity checks for bitmap block numbers")
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ext4/balloc.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -321,6 +321,7 @@ static ext4_fsblk_t ext4_valid_block_bit
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	ext4_grpblk_t offset;
 	ext4_grpblk_t next_zero_bit;
+	ext4_grpblk_t max_bit = EXT4_CLUSTERS_PER_GROUP(sb);
 	ext4_fsblk_t blk;
 	ext4_fsblk_t group_first_block;
 
@@ -338,7 +339,7 @@ static ext4_fsblk_t ext4_valid_block_bit
 	/* check whether block bitmap block number is set */
 	blk = ext4_block_bitmap(sb, desc);
 	offset = blk - group_first_block;
-	if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+	if (offset < 0 || EXT4_B2C(sbi, offset) >= max_bit ||
 	    !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
 		/* bad block bitmap */
 		return blk;
@@ -346,7 +347,7 @@ static ext4_fsblk_t ext4_valid_block_bit
 	/* check whether the inode bitmap block number is set */
 	blk = ext4_inode_bitmap(sb, desc);
 	offset = blk - group_first_block;
-	if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
+	if (offset < 0 || EXT4_B2C(sbi, offset) >= max_bit ||
 	    !ext4_test_bit(EXT4_B2C(sbi, offset), bh->b_data))
 		/* bad block bitmap */
 		return blk;
@@ -354,8 +355,8 @@ static ext4_fsblk_t ext4_valid_block_bit
 	/* check whether the inode table block number is set */
 	blk = ext4_inode_table(sb, desc);
 	offset = blk - group_first_block;
-	if (offset < 0 || EXT4_B2C(sbi, offset) >= sb->s_blocksize ||
-	    EXT4_B2C(sbi, offset + sbi->s_itb_per_group) >= sb->s_blocksize)
+	if (offset < 0 || EXT4_B2C(sbi, offset) >= max_bit ||
+	    EXT4_B2C(sbi, offset + sbi->s_itb_per_group) >= max_bit)
 		return blk;
 	next_zero_bit = ext4_find_next_zero_bit(bh->b_data,
 			EXT4_B2C(sbi, offset + EXT4_SB(sb)->s_itb_per_group),

[PATCH 4.14 06/91] random: set up the NUMA crng instances after the CRNG is fully initialized

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit 8ef35c866f8862df074a49a93b0309725812dea8 upstream.

Until the primary_crng is fully initialized, don't initialize the NUMA
crng nodes.  Otherwise users of /dev/urandom on NUMA systems before
the CRNG is fully initialized can get very bad quality randomness.  Of
course everyone should move to getrandom(2) where this won't be an
issue, but there's a lot of legacy code out there.  This related to
CVE-2018-1108.

Reported-by: Jann Horn <jannh@google.com>
Fixes: 1e7f583af67b ("random: make /dev/urandom scalable for silly...")
Cc: stable@kernel.org # 4.8+
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/random.c |   46 +++++++++++++++++++++++++++-------------------
 1 file changed, 27 insertions(+), 19 deletions(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -787,6 +787,32 @@ static void crng_initialize(struct crng_
 	crng->init_time = jiffies - CRNG_RESEED_INTERVAL - 1;
 }
 
+#ifdef CONFIG_NUMA
+static void numa_crng_init(void)
+{
+	int i;
+	struct crng_state *crng;
+	struct crng_state **pool;
+
+	pool = kcalloc(nr_node_ids, sizeof(*pool), GFP_KERNEL|__GFP_NOFAIL);
+	for_each_online_node(i) {
+		crng = kmalloc_node(sizeof(struct crng_state),
+				    GFP_KERNEL | __GFP_NOFAIL, i);
+		spin_lock_init(&crng->lock);
+		crng_initialize(crng);
+		pool[i] = crng;
+	}
+	mb();
+	if (cmpxchg(&crng_node_pool, NULL, pool)) {
+		for_each_node(i)
+			kfree(pool[i]);
+		kfree(pool);
+	}
+}
+#else
+static void numa_crng_init(void) {}
+#endif
+
 /*
  * crng_fast_load() can be called by code in the interrupt service
  * path.  So we can't afford to dilly-dally.
@@ -893,6 +919,7 @@ static void crng_reseed(struct crng_stat
 	spin_unlock_irqrestore(&crng->lock, flags);
 	if (crng == &primary_crng && crng_init < 2) {
 		invalidate_batched_entropy();
+		numa_crng_init();
 		crng_init = 2;
 		process_random_ready_list();
 		wake_up_interruptible(&crng_init_wait);
@@ -1731,29 +1758,10 @@ static void init_std_data(struct entropy
  */
 static int rand_initialize(void)
 {
-#ifdef CONFIG_NUMA
-	int i;
-	struct crng_state *crng;
-	struct crng_state **pool;
-#endif
-
 	init_std_data(&input_pool);
 	init_std_data(&blocking_pool);
 	crng_initialize(&primary_crng);
 	crng_global_init_time = jiffies;
-
-#ifdef CONFIG_NUMA
-	pool = kcalloc(nr_node_ids, sizeof(*pool), GFP_KERNEL|__GFP_NOFAIL);
-	for_each_online_node(i) {
-		crng = kmalloc_node(sizeof(struct crng_state),
-				    GFP_KERNEL | __GFP_NOFAIL, i);
-		spin_lock_init(&crng->lock);
-		crng_initialize(crng);
-		pool[i] = crng;
-	}
-	mb();
-	crng_node_pool = pool;
-#endif
 	return 0;
 }
 early_initcall(rand_initialize);

[PATCH 4.14 07/91] random: fix possible sleeping allocation from irq context

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit 6c1e851c4edc13a43adb3ea4044e3fc8f43ccf7d upstream.

We can do a sleeping allocation from an irq context when CONFIG_NUMA
is enabled.  Fix this by initializing the NUMA crng instances in a
workqueue.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot+9de458f6a5e713ee8c1a@syzkaller.appspotmail.com
Fixes: 8ef35c866f8862df ("random: set up the NUMA crng instances...")
Cc: stable@vger.kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/random.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -788,7 +788,7 @@ static void crng_initialize(struct crng_
 }
 
 #ifdef CONFIG_NUMA
-static void numa_crng_init(void)
+static void do_numa_crng_init(struct work_struct *work)
 {
 	int i;
 	struct crng_state *crng;
@@ -809,6 +809,13 @@ static void numa_crng_init(void)
 		kfree(pool);
 	}
 }
+
+static DECLARE_WORK(numa_crng_init_work, do_numa_crng_init);
+
+static void numa_crng_init(void)
+{
+	schedule_work(&numa_crng_init_work);
+}
 #else
 static void numa_crng_init(void) {}
 #endif

[PATCH 4.14 08/91] random: rate limit unseeded randomness warnings

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit 4e00b339e264802851aff8e73cde7d24b57b18ce upstream.

On systems without sufficient boot randomness, no point spamming dmesg.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/random.c |   39 ++++++++++++++++++++++++++++++++++-----
 1 file changed, 34 insertions(+), 5 deletions(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -261,6 +261,7 @@
 #include <linux/ptrace.h>
 #include <linux/workqueue.h>
 #include <linux/irq.h>
+#include <linux/ratelimit.h>
 #include <linux/syscalls.h>
 #include <linux/completion.h>
 #include <linux/uuid.h>
@@ -438,6 +439,16 @@ static void _crng_backtrack_protect(stru
 static void process_random_ready_list(void);
 static void _get_random_bytes(void *buf, int nbytes);
 
+static struct ratelimit_state unseeded_warning =
+	RATELIMIT_STATE_INIT("warn_unseeded_randomness", HZ, 3);
+static struct ratelimit_state urandom_warning =
+	RATELIMIT_STATE_INIT("warn_urandom_randomness", HZ, 3);
+
+static int ratelimit_disable __read_mostly;
+
+module_param_named(ratelimit_disable, ratelimit_disable, int, 0644);
+MODULE_PARM_DESC(ratelimit_disable, "Disable random ratelimit suppression");
+
 /**********************************************************************
  *
  * OS independent entropy store.   Here are the functions which handle
@@ -931,6 +942,18 @@ static void crng_reseed(struct crng_stat
 		process_random_ready_list();
 		wake_up_interruptible(&crng_init_wait);
 		pr_notice("random: crng init done\n");
+		if (unseeded_warning.missed) {
+			pr_notice("random: %d get_random_xx warning(s) missed "
+				  "due to ratelimiting\n",
+				  unseeded_warning.missed);
+			unseeded_warning.missed = 0;
+		}
+		if (urandom_warning.missed) {
+			pr_notice("random: %d urandom warning(s) missed "
+				  "due to ratelimiting\n",
+				  urandom_warning.missed);
+			urandom_warning.missed = 0;
+		}
 	}
 }
 
@@ -1574,8 +1597,9 @@ static void _warn_unseeded_randomness(co
 #ifndef CONFIG_WARN_ALL_UNSEEDED_RANDOM
 	print_once = true;
 #endif
-	pr_notice("random: %s called from %pS with crng_init=%d\n",
-		  func_name, caller, crng_init);
+	if (__ratelimit(&unseeded_warning))
+		pr_notice("random: %s called from %pS with crng_init=%d\n",
+			  func_name, caller, crng_init);
 }
 
 /*
@@ -1769,6 +1793,10 @@ static int rand_initialize(void)
 	init_std_data(&blocking_pool);
 	crng_initialize(&primary_crng);
 	crng_global_init_time = jiffies;
+	if (ratelimit_disable) {
+		urandom_warning.interval = 0;
+		unseeded_warning.interval = 0;
+	}
 	return 0;
 }
 early_initcall(rand_initialize);
@@ -1836,9 +1864,10 @@ urandom_read(struct file *file, char __u
 
 	if (!crng_ready() && maxwarn > 0) {
 		maxwarn--;
-		printk(KERN_NOTICE "random: %s: uninitialized urandom read "
-		       "(%zd bytes read)\n",
-		       current->comm, nbytes);
+		if (__ratelimit(&urandom_warning))
+			printk(KERN_NOTICE "random: %s: uninitialized "
+			       "urandom read (%zd bytes read)\n",
+			       current->comm, nbytes);
 		spin_lock_irqsave(&primary_crng.lock, flags);
 		crng_init_cnt = 0;
 		spin_unlock_irqrestore(&primary_crng.lock, flags);

[PATCH 4.14 09/91] usbip: usbip_event: fix to not print kernel pointer address

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Shuah Khan <shuahkh@osg.samsung.com>

commit 4c982482341c64f55daf69b6caa5a2bcd9b43824 upstream.

Fix it to not print kernel pointer address. Remove the conditional
and debug message as it isn't very useful.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/usbip/usbip_event.c |    4 ----
 1 file changed, 4 deletions(-)

--- a/drivers/usb/usbip/usbip_event.c
+++ b/drivers/usb/usbip/usbip_event.c
@@ -105,10 +105,6 @@ static void event_handler(struct work_st
 			unset_event(ud, USBIP_EH_UNUSABLE);
 		}
 
-		/* Stop the error handler. */
-		if (ud->event & USBIP_EH_BYE)
-			usbip_dbg_eh("removed %p\n", ud);
-
 		wake_up(&ud->eh_waitq);
 	}
 }

[PATCH 4.14 10/91] usbip: usbip_host: fix to hold parent lock for device_attach() calls

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Shuah Khan <shuahkh@osg.samsung.com>

commit 4bfb141bc01312a817d36627cc47c93f801c216d upstream.

usbip_host calls device_attach() without holding dev->parent lock.
Fix it.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/usbip/stub_main.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/usb/usbip/stub_main.c
+++ b/drivers/usb/usbip/stub_main.c
@@ -200,7 +200,12 @@ static ssize_t rebind_store(struct devic
 	if (!bid)
 		return -ENODEV;
 
+	/* device_attach() callers should hold parent lock for USB */
+	if (bid->udev->dev.parent)
+		device_lock(bid->udev->dev.parent);
 	ret = device_attach(&bid->udev->dev);
+	if (bid->udev->dev.parent)
+		device_unlock(bid->udev->dev.parent);
 	if (ret < 0) {
 		dev_err(&bid->udev->dev, "rebind failed\n");
 		return ret;

[PATCH 4.14 11/91] usbip: vhci_hcd: Fix usb device and sockfd leaks

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Shuah Khan <shuahkh@osg.samsung.com>

commit 9020a7efe537856eb3e826ebebdf38a5d07a7857 upstream.

vhci_hcd fails to do reset to put usb device and sockfd in the
module remove/stop paths. Fix the leak.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/usbip/usbip_common.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/usbip/usbip_common.h
+++ b/drivers/usb/usbip/usbip_common.h
@@ -257,7 +257,7 @@ enum usbip_side {
 #define	VUDC_EVENT_ERROR_USB	(USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
 #define	VUDC_EVENT_ERROR_MALLOC	(USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
 
-#define	VDEV_EVENT_REMOVED	(USBIP_EH_SHUTDOWN | USBIP_EH_BYE)
+#define	VDEV_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_RESET | USBIP_EH_BYE)
 #define	VDEV_EVENT_DOWN		(USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
 #define	VDEV_EVENT_ERROR_TCP	(USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
 #define	VDEV_EVENT_ERROR_MALLOC	(USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)

[PATCH 4.14 12/91] usbip: vhci_hcd: check rhport before using in vhci_hub_control()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Shuah Khan <shuahkh@osg.samsung.com>

commit 5b22f676118ff25049382041da0db8012e57c9e8 upstream.

Validate !rhport < 0 before using it to access port_status array.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/usbip/vhci_hcd.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -368,6 +368,8 @@ static int vhci_hub_control(struct usb_h
 		usbip_dbg_vhci_rh(" ClearHubFeature\n");
 		break;
 	case ClearPortFeature:
+		if (rhport < 0)
+			goto error;
 		switch (wValue) {
 		case USB_PORT_FEAT_SUSPEND:
 			if (hcd->speed == HCD_USB3) {
@@ -525,11 +527,16 @@ static int vhci_hub_control(struct usb_h
 				goto error;
 			}
 
+			if (rhport < 0)
+				goto error;
+
 			vhci_hcd->port_status[rhport] |= USB_PORT_STAT_SUSPEND;
 			break;
 		case USB_PORT_FEAT_POWER:
 			usbip_dbg_vhci_rh(
 				" SetPortFeature: USB_PORT_FEAT_POWER\n");
+			if (rhport < 0)
+				goto error;
 			if (hcd->speed == HCD_USB3)
 				vhci_hcd->port_status[rhport] |= USB_SS_PORT_STAT_POWER;
 			else
@@ -538,6 +545,8 @@ static int vhci_hub_control(struct usb_h
 		case USB_PORT_FEAT_BH_PORT_RESET:
 			usbip_dbg_vhci_rh(
 				" SetPortFeature: USB_PORT_FEAT_BH_PORT_RESET\n");
+			if (rhport < 0)
+				goto error;
 			/* Applicable only for USB3.0 hub */
 			if (hcd->speed != HCD_USB3) {
 				pr_err("USB_PORT_FEAT_BH_PORT_RESET req not "
@@ -548,6 +557,8 @@ static int vhci_hub_control(struct usb_h
 		case USB_PORT_FEAT_RESET:
 			usbip_dbg_vhci_rh(
 				" SetPortFeature: USB_PORT_FEAT_RESET\n");
+			if (rhport < 0)
+				goto error;
 			/* if it's already enabled, disable */
 			if (hcd->speed == HCD_USB3) {
 				vhci_hcd->port_status[rhport] = 0;
@@ -568,6 +579,8 @@ static int vhci_hub_control(struct usb_h
 		default:
 			usbip_dbg_vhci_rh(" SetPortFeature: default %d\n",
 					  wValue);
+			if (rhport < 0)
+				goto error;
 			if (hcd->speed == HCD_USB3) {
 				if ((vhci_hcd->port_status[rhport] &
 				     USB_SS_PORT_STAT_POWER) != 0) {

[PATCH 4.14 13/91] Revert "xhci: plat: Register shutdown for xhci_plat"

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit c20f53c58261b121d0989e147368803b9773b413 upstream.

This reverts commit b07c12517f2aed0add8ce18146bb426b14099392

It is incomplete and causes hangs on devices when shutting down.  It
needs a much more "complete" fix in order to work properly.  As that fix
has not been merged, revert this patch for now before it causes any more
problems.

Cc: Greg Hackmann <ghackmann@google.com>
Cc: Adam Wallis <awallis@codeaurora.org>
Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/host/xhci-plat.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -423,7 +423,6 @@ MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_
 static struct platform_driver usb_xhci_driver = {
 	.probe	= xhci_plat_probe,
 	.remove	= xhci_plat_remove,
-	.shutdown	= usb_hcd_platform_shutdown,
 	.driver	= {
 		.name = "xhci-hcd",
 		.pm = &xhci_plat_pm_ops,

[PATCH 4.14 14/91] xhci: Fix USB ports for Dell Inspiron 5775

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit 621faf4f6a181b6e012c1d1865213f36f4159b7f upstream.

The Dell Inspiron 5775 is a Raven Ridge. The Enable Slot command timed
out when a USB device gets plugged:
[ 212.156326] xhci_hcd 0000:03:00.3: Error while assigning device slot ID
[ 212.156340] xhci_hcd 0000:03:00.3: Max number of devices this xHCI host supports is 64.
[ 212.156348] usb usb2-port3: couldn't allocate usb_device

AMD suggests that a delay before xHC suspends can fix the issue.

I can confirm it fixes the issue, so use the suspend delay quirk for
Raven Ridge's xHC.

Cc: stable@vger.kernel.org
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/host/xhci-pci.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -134,7 +134,10 @@ static void xhci_pci_quirks(struct devic
 	if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
 		xhci->quirks |= XHCI_AMD_PLL_FIX;
 
-	if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x43bb)
+	if (pdev->vendor == PCI_VENDOR_ID_AMD &&
+		(pdev->device == 0x15e0 ||
+		 pdev->device == 0x15e1 ||
+		 pdev->device == 0x43bb))
 		xhci->quirks |= XHCI_SUSPEND_DELAY;
 
 	if (pdev->vendor == PCI_VENDOR_ID_AMD)

[PATCH 4.14 15/91] USB: serial: simple: add libtransistor console

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Collin May <collin@collinswebsite.com>

commit fe710508b6ba9d28730f3021fed70e7043433b2e upstream.

Add simple driver for libtransistor USB console.
This device is implemented in software:
https://github.com/reswitched/libtransistor/blob/development/lib/usb_serial.c

Signed-off-by: Collin May <collin@collinswebsite.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/serial/Kconfig             |    1 +
 drivers/usb/serial/usb-serial-simple.c |    7 +++++++
 2 files changed, 8 insertions(+)

--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -62,6 +62,7 @@ config USB_SERIAL_SIMPLE
 		- Fundamental Software dongle.
 		- Google USB serial devices
 		- HP4x calculators
+		- Libtransistor USB console
 		- a number of Motorola phones
 		- Motorola Tetra devices
 		- Novatel Wireless GPS receivers
--- a/drivers/usb/serial/usb-serial-simple.c
+++ b/drivers/usb/serial/usb-serial-simple.c
@@ -66,6 +66,11 @@ DEVICE(flashloader, FLASHLOADER_IDS);
 					0x01) }
 DEVICE(google, GOOGLE_IDS);
 
+/* Libtransistor USB console */
+#define LIBTRANSISTOR_IDS()			\
+	{ USB_DEVICE(0x1209, 0x8b00) }
+DEVICE(libtransistor, LIBTRANSISTOR_IDS);
+
 /* ViVOpay USB Serial Driver */
 #define VIVOPAY_IDS()			\
 	{ USB_DEVICE(0x1d5f, 0x1004) }	/* ViVOpay 8800 */
@@ -113,6 +118,7 @@ static struct usb_serial_driver * const
 	&funsoft_device,
 	&flashloader_device,
 	&google_device,
+	&libtransistor_device,
 	&vivopay_device,
 	&moto_modem_device,
 	&motorola_tetra_device,
@@ -129,6 +135,7 @@ static const struct usb_device_id id_tab
 	FUNSOFT_IDS(),
 	FLASHLOADER_IDS(),
 	GOOGLE_IDS(),
+	LIBTRANSISTOR_IDS(),
 	VIVOPAY_IDS(),
 	MOTO_IDS(),
 	MOTOROLA_TETRA_IDS(),

[PATCH 4.14 16/91] USB: serial: ftdi_sio: use jtag quirk for Arrow USB Blaster

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Vasyl Vavrychuk <vvavrychuk@gmail.com>

commit 470b5d6f0cf4674be2d1ec94e54283a1770b6a1a upstream.

Arrow USB Blaster integrated on MAX1000 board uses the same vendor ID
(0x0403) and product ID (0x6010) as the "original" FTDI device.

This patch avoids picking up by ftdi_sio of the first interface of this
USB device. After that this device can be used by Arrow user-space JTAG
driver.

Signed-off-by: Vasyl Vavrychuk <vvavrychuk@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/serial/ftdi_sio.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1902,7 +1902,8 @@ static int ftdi_8u2232c_probe(struct usb
 		return ftdi_jtag_probe(serial);
 
 	if (udev->product &&
-		(!strcmp(udev->product, "BeagleBone/XDS100V2") ||
+		(!strcmp(udev->product, "Arrow USB Blaster") ||
+		 !strcmp(udev->product, "BeagleBone/XDS100V2") ||
 		 !strcmp(udev->product, "SNAP Connect E10")))
 		return ftdi_jtag_probe(serial);
 

[PATCH 4.14 17/91] USB: serial: cp210x: add ID for NI USB serial console

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Kyle Roeschley <kyle.roeschley@ni.com>

commit 1e23aace21515a8f7615a1de016c0ea8d4e0cc6e upstream.

Added the USB VID and PID for the USB serial console on some National
Instruments devices.

Signed-off-by: Kyle Roeschley <kyle.roeschley@ni.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/serial/cp210x.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -217,6 +217,7 @@ static const struct usb_device_id id_tab
 	{ USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */
 	{ USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */
 	{ USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */
+	{ USB_DEVICE(0x3923, 0x7A0B) }, /* National Instruments USB Serial Console */
 	{ USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */
 	{ } /* Terminating Entry */
 };

[PATCH 4.14 18/91] usb: typec: ucsi: Increase command completion timeout value

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Heikki Krogerus <heikki.krogerus@linux.intel.com>

commit b1b59e16075f5e5da2943ce8de724ab96bc3c6c2 upstream.

On some boards, under heavy load, the EC firmware is
unable to complete commands even in one second. Increasing
the command completion timeout value to five seconds.

Reported-by: Quanxian Wang <quanxian.wang@intel.com>
Fixes: c1b0bc2dabfa ("usb: typec: Add support for UCSI interface")
Cc: <stable@vger.kernel.org>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/typec/ucsi/ucsi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -31,7 +31,7 @@
  * difficult to estimate the time it takes for the system to process the command
  * before it is actually passed to the PPM.
  */
-#define UCSI_TIMEOUT_MS		1000
+#define UCSI_TIMEOUT_MS		5000
 
 /*
  * UCSI_SWAP_TIMEOUT_MS - Timeout for role swap requests

[PATCH 4.14 19/91] usb: core: Add quirk for HP v222w 16GB Mini

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Kamil Lulko <kamilx.lulko@intel.com>

commit 3180dabe08e3653bf0a838553905d88f3773f29c upstream.

Add DELAY_INIT quirk to fix the following problem with HP
v222w 16GB Mini:

usb 1-3: unable to read config index 0 descriptor/start: -110
usb 1-3: can't read configurations, error -110
usb 1-3: can't set config #1, error -110

Signed-off-by: Kamil Lulko <kamilx.lulko@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/core/quirks.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -45,6 +45,9 @@ static const struct usb_device_id usb_qu
 	{ USB_DEVICE(0x03f0, 0x0701), .driver_info =
 			USB_QUIRK_STRING_FETCH_255 },
 
+	/* HP v222w 16GB Mini USB Drive */
+	{ USB_DEVICE(0x03f0, 0x3f40), .driver_info = USB_QUIRK_DELAY_INIT },
+
 	/* Creative SB Audigy 2 NX */
 	{ USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
 

[PATCH 4.14 20/91] USB: Increment wakeup count on remote wakeup.

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Ravi Chandra Sadineni <ravisadineni@chromium.org>

commit 83a62c51ba7b3c0bf45150c4eac7aefc6c785e94 upstream.

On chromebooks we depend on wakeup count to identify the wakeup source.
But currently USB devices do not increment the wakeup count when they
trigger the remote wake. This patch addresses the same.

Resume condition is reported differently on USB 2.0 and USB 3.0 devices.

On USB 2.0 devices, a wake capable device, if wake enabled, drives
resume signal to indicate a remote wake (USB 2.0 spec section 7.1.7.7).
The upstream facing port then sets C_PORT_SUSPEND bit and reports a
port change event (USB 2.0 spec section 11.24.2.7.2.3). Thus if a port
has resumed before driving the resume signal from the host and
C_PORT_SUSPEND is set, then the device attached to the given port might
be the reason for the last system wakeup. Increment the wakeup count for
the same.

On USB 3.0 devices, a function may signal that it wants to exit from device
suspend by sending a Function Wake Device Notification to the host (USB3.0
spec section 8.5.6.4) Thus on receiving the Function Wake, increment the
wakeup count.

Signed-off-by: Ravi Chandra Sadineni <ravisadineni@chromium.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/core/hcd.c |    1 +
 drivers/usb/core/hub.c |   10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2376,6 +2376,7 @@ void usb_hcd_resume_root_hub (struct usb
 
 	spin_lock_irqsave (&hcd_root_hub_lock, flags);
 	if (hcd->rh_registered) {
+		pm_wakeup_event(&hcd->self.root_hub->dev, 0);
 		set_bit(HCD_FLAG_WAKEUP_PENDING, &hcd->flags);
 		queue_work(pm_wq, &hcd->wakeup_work);
 	}
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -650,12 +650,17 @@ void usb_wakeup_notification(struct usb_
 		unsigned int portnum)
 {
 	struct usb_hub *hub;
+	struct usb_port *port_dev;
 
 	if (!hdev)
 		return;
 
 	hub = usb_hub_to_struct_hub(hdev);
 	if (hub) {
+		port_dev = hub->ports[portnum - 1];
+		if (port_dev && port_dev->child)
+			pm_wakeup_event(&port_dev->child->dev, 0);
+
 		set_bit(portnum, hub->wakeup_bits);
 		kick_hub_wq(hub);
 	}
@@ -3415,8 +3420,11 @@ int usb_port_resume(struct usb_device *u
 
 	/* Skip the initial Clear-Suspend step for a remote wakeup */
 	status = hub_port_status(hub, port1, &portstatus, &portchange);
-	if (status == 0 && !port_is_suspended(hub, portstatus))
+	if (status == 0 && !port_is_suspended(hub, portstatus)) {
+		if (portchange & USB_PORT_STAT_C_SUSPEND)
+			pm_wakeup_event(&udev->dev, 0);
 		goto SuspendCleared;
+	}
 
 	/* see 7.1.7.7; affects power usage, but not budgeting */
 	if (hub_is_superspeed(hub->hdev))

[PATCH 4.14 21/91] ALSA: usb-audio: Skip broken EU on Dell dock USB-audio

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit 1d8d6428d1da642ddd75b0be2d1bb1123ff8e017 upstream.

The Dell Dock USB-audio device with 0bda:4014 is behaving notoriously
bad, and we have already applied some workaround to avoid the firmware
hiccup.  Yet we still need to skip one thing, the Extension Unit at ID
4, which doesn't react correctly to the mixer ctl access.

Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1090658
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/usb/mixer_maps.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -353,8 +353,11 @@ static struct usbmix_name_map bose_compa
 /*
  * Dell usb dock with ALC4020 codec had a firmware problem where it got
  * screwed up when zero volume is passed; just skip it as a workaround
+ *
+ * Also the extension unit gives an access error, so skip it as well.
  */
 static const struct usbmix_name_map dell_alc4020_map[] = {
+	{ 4, NULL },	/* extension unit */
 	{ 16, NULL },
 	{ 19, NULL },
 	{ 0 }

[PATCH 4.14 22/91] virtio: add ability to iterate over vqs

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael S. Tsirkin <mst@redhat.com>

commit 24a7e4d20783c0514850f24a5c41ede46ab058f0 upstream.

For cleanup it's helpful to be able to simply scan all vqs and discard
all data. Add an iterator to do that.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/virtio.h |    3 +++
 1 file changed, 3 insertions(+)

--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -157,6 +157,9 @@ int virtio_device_freeze(struct virtio_d
 int virtio_device_restore(struct virtio_device *dev);
 #endif
 
+#define virtio_device_for_each_vq(vdev, vq) \
+	list_for_each_entry(vq, &vdev->vqs, list)
+
 /**
  * virtio_driver - operations for a virtio I/O driver
  * @driver: underlying device driver (populate name and owner).

[PATCH 4.14 23/91] virtio_console: dont tie bufs to a vq

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael S. Tsirkin <mst@redhat.com>

commit 2855b33514d290c51d52d94e25d3ef942cd4d578 upstream.

an allocated buffer doesn't need to be tied to a vq -
only vq->vdev is ever used. Pass the function the
just what it needs - the vdev.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/virtio_console.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -422,7 +422,7 @@ static void reclaim_dma_bufs(void)
 	}
 }
 
-static struct port_buffer *alloc_buf(struct virtqueue *vq, size_t buf_size,
+static struct port_buffer *alloc_buf(struct virtio_device *vdev, size_t buf_size,
 				     int pages)
 {
 	struct port_buffer *buf;
@@ -445,16 +445,16 @@ static struct port_buffer *alloc_buf(str
 		return buf;
 	}
 
-	if (is_rproc_serial(vq->vdev)) {
+	if (is_rproc_serial(vdev)) {
 		/*
 		 * Allocate DMA memory from ancestor. When a virtio
 		 * device is created by remoteproc, the DMA memory is
 		 * associated with the grandparent device:
 		 * vdev => rproc => platform-dev.
 		 */
-		if (!vq->vdev->dev.parent || !vq->vdev->dev.parent->parent)
+		if (!vdev->dev.parent || !vdev->dev.parent->parent)
 			goto free_buf;
-		buf->dev = vq->vdev->dev.parent->parent;
+		buf->dev = vdev->dev.parent->parent;
 
 		/* Increase device refcnt to avoid freeing it */
 		get_device(buf->dev);
@@ -838,7 +838,7 @@ static ssize_t port_fops_write(struct fi
 
 	count = min((size_t)(32 * 1024), count);
 
-	buf = alloc_buf(port->out_vq, count, 0);
+	buf = alloc_buf(port->portdev->vdev, count, 0);
 	if (!buf)
 		return -ENOMEM;
 
@@ -957,7 +957,7 @@ static ssize_t port_fops_splice_write(st
 	if (ret < 0)
 		goto error_out;
 
-	buf = alloc_buf(port->out_vq, 0, pipe->nrbufs);
+	buf = alloc_buf(port->portdev->vdev, 0, pipe->nrbufs);
 	if (!buf) {
 		ret = -ENOMEM;
 		goto error_out;
@@ -1374,7 +1374,7 @@ static unsigned int fill_queue(struct vi
 
 	nr_added_bufs = 0;
 	do {
-		buf = alloc_buf(vq, PAGE_SIZE, 0);
+		buf = alloc_buf(vq->vdev, PAGE_SIZE, 0);
 		if (!buf)
 			break;
 

[PATCH 4.14 24/91] virtio_console: free buffers after reset

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael S. Tsirkin <mst@redhat.com>

commit a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b upstream.

Console driver is out of spec. The spec says:
	A driver MUST NOT decrement the available idx on a live
	virtqueue (ie. there is no way to “unexpose” buffers).
and it does exactly that by trying to detach unused buffers
without doing a device reset first.

Defer detaching the buffers until device unplug.

Of course this means we might get an interrupt for
a vq without an attached port now. Handle that by
discarding the consumed buffer.

Reported-by: Tiwei Bie <tiwei.bie@intel.com>
Fixes: b3258ff1d6 ("virtio: Decrement avail idx on buffer detach")
Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/virtio_console.c |   49 ++++++++++++++++++++----------------------
 1 file changed, 24 insertions(+), 25 deletions(-)

--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1402,7 +1402,6 @@ static int add_port(struct ports_device
 {
 	char debugfs_name[16];
 	struct port *port;
-	struct port_buffer *buf;
 	dev_t devt;
 	unsigned int nr_added_bufs;
 	int err;
@@ -1513,8 +1512,6 @@ static int add_port(struct ports_device
 	return 0;
 
 free_inbufs:
-	while ((buf = virtqueue_detach_unused_buf(port->in_vq)))
-		free_buf(buf, true);
 free_device:
 	device_destroy(pdrvdata.class, port->dev->devt);
 free_cdev:
@@ -1539,34 +1536,14 @@ static void remove_port(struct kref *kre
 
 static void remove_port_data(struct port *port)
 {
-	struct port_buffer *buf;
-
 	spin_lock_irq(&port->inbuf_lock);
 	/* Remove unused data this port might have received. */
 	discard_port_data(port);
 	spin_unlock_irq(&port->inbuf_lock);
 
-	/* Remove buffers we queued up for the Host to send us data in. */
-	do {
-		spin_lock_irq(&port->inbuf_lock);
-		buf = virtqueue_detach_unused_buf(port->in_vq);
-		spin_unlock_irq(&port->inbuf_lock);
-		if (buf)
-			free_buf(buf, true);
-	} while (buf);
-
 	spin_lock_irq(&port->outvq_lock);
 	reclaim_consumed_buffers(port);
 	spin_unlock_irq(&port->outvq_lock);
-
-	/* Free pending buffers from the out-queue. */
-	do {
-		spin_lock_irq(&port->outvq_lock);
-		buf = virtqueue_detach_unused_buf(port->out_vq);
-		spin_unlock_irq(&port->outvq_lock);
-		if (buf)
-			free_buf(buf, true);
-	} while (buf);
 }
 
 /*
@@ -1791,13 +1768,24 @@ static void control_work_handler(struct
 	spin_unlock(&portdev->c_ivq_lock);
 }
 
+static void flush_bufs(struct virtqueue *vq, bool can_sleep)
+{
+	struct port_buffer *buf;
+	unsigned int len;
+
+	while ((buf = virtqueue_get_buf(vq, &len)))
+		free_buf(buf, can_sleep);
+}
+
 static void out_intr(struct virtqueue *vq)
 {
 	struct port *port;
 
 	port = find_port_by_vq(vq->vdev->priv, vq);
-	if (!port)
+	if (!port) {
+		flush_bufs(vq, false);
 		return;
+	}
 
 	wake_up_interruptible(&port->waitqueue);
 }
@@ -1808,8 +1796,10 @@ static void in_intr(struct virtqueue *vq
 	unsigned long flags;
 
 	port = find_port_by_vq(vq->vdev->priv, vq);
-	if (!port)
+	if (!port) {
+		flush_bufs(vq, false);
 		return;
+	}
 
 	spin_lock_irqsave(&port->inbuf_lock, flags);
 	port->inbuf = get_inbuf(port);
@@ -1984,6 +1974,15 @@ static const struct file_operations port
 
 static void remove_vqs(struct ports_device *portdev)
 {
+	struct virtqueue *vq;
+
+	virtio_device_for_each_vq(portdev->vdev, vq) {
+		struct port_buffer *buf;
+
+		flush_bufs(vq, true);
+		while ((buf = virtqueue_detach_unused_buf(vq)))
+			free_buf(buf, true);
+	}
 	portdev->vdev->config->del_vqs(portdev->vdev);
 	kfree(portdev->in_vqs);
 	kfree(portdev->out_vqs);

[PATCH 4.14 25/91] virtio_console: drop custom control queue cleanup

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael S. Tsirkin <mst@redhat.com>

commit 61a8950c5c5708cf2068b29ffde94e454e528208 upstream.

We now cleanup all VQs on device removal - no need
to handle the control VQ specially.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/virtio_console.c |   17 -----------------
 1 file changed, 17 deletions(-)

--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1988,21 +1988,6 @@ static void remove_vqs(struct ports_devi
 	kfree(portdev->out_vqs);
 }
 
-static void remove_controlq_data(struct ports_device *portdev)
-{
-	struct port_buffer *buf;
-	unsigned int len;
-
-	if (!use_multiport(portdev))
-		return;
-
-	while ((buf = virtqueue_get_buf(portdev->c_ivq, &len)))
-		free_buf(buf, true);
-
-	while ((buf = virtqueue_detach_unused_buf(portdev->c_ivq)))
-		free_buf(buf, true);
-}
-
 /*
  * Once we're further in boot, we get probed like any other virtio
  * device.
@@ -2163,7 +2148,6 @@ static void virtcons_remove(struct virti
 	 * have to just stop using the port, as the vqs are going
 	 * away.
 	 */
-	remove_controlq_data(portdev);
 	remove_vqs(portdev);
 	kfree(portdev);
 }
@@ -2208,7 +2192,6 @@ static int virtcons_freeze(struct virtio
 	 */
 	if (use_multiport(portdev))
 		virtqueue_disable_cb(portdev->c_ivq);
-	remove_controlq_data(portdev);
 
 	list_for_each_entry(port, &portdev->ports, list) {
 		virtqueue_disable_cb(port->in_vq);

[PATCH 4.14 26/91] virtio_console: move removal code

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael S. Tsirkin <mst@redhat.com>

commit aa44ec867030a72e8aa127977e37dec551d8df19 upstream.

Will make it reusable for error handling.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/virtio_console.c |   72 +++++++++++++++++++++---------------------
 1 file changed, 36 insertions(+), 36 deletions(-)

--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1988,6 +1988,42 @@ static void remove_vqs(struct ports_devi
 	kfree(portdev->out_vqs);
 }
 
+static void virtcons_remove(struct virtio_device *vdev)
+{
+	struct ports_device *portdev;
+	struct port *port, *port2;
+
+	portdev = vdev->priv;
+
+	spin_lock_irq(&pdrvdata_lock);
+	list_del(&portdev->list);
+	spin_unlock_irq(&pdrvdata_lock);
+
+	/* Disable interrupts for vqs */
+	vdev->config->reset(vdev);
+	/* Finish up work that's lined up */
+	if (use_multiport(portdev))
+		cancel_work_sync(&portdev->control_work);
+	else
+		cancel_work_sync(&portdev->config_work);
+
+	list_for_each_entry_safe(port, port2, &portdev->ports, list)
+		unplug_port(port);
+
+	unregister_chrdev(portdev->chr_major, "virtio-portsdev");
+
+	/*
+	 * When yanking out a device, we immediately lose the
+	 * (device-side) queues.  So there's no point in keeping the
+	 * guest side around till we drop our final reference.  This
+	 * also means that any ports which are in an open state will
+	 * have to just stop using the port, as the vqs are going
+	 * away.
+	 */
+	remove_vqs(portdev);
+	kfree(portdev);
+}
+
 /*
  * Once we're further in boot, we get probed like any other virtio
  * device.
@@ -2116,42 +2152,6 @@ fail:
 	return err;
 }
 
-static void virtcons_remove(struct virtio_device *vdev)
-{
-	struct ports_device *portdev;
-	struct port *port, *port2;
-
-	portdev = vdev->priv;
-
-	spin_lock_irq(&pdrvdata_lock);
-	list_del(&portdev->list);
-	spin_unlock_irq(&pdrvdata_lock);
-
-	/* Disable interrupts for vqs */
-	vdev->config->reset(vdev);
-	/* Finish up work that's lined up */
-	if (use_multiport(portdev))
-		cancel_work_sync(&portdev->control_work);
-	else
-		cancel_work_sync(&portdev->config_work);
-
-	list_for_each_entry_safe(port, port2, &portdev->ports, list)
-		unplug_port(port);
-
-	unregister_chrdev(portdev->chr_major, "virtio-portsdev");
-
-	/*
-	 * When yanking out a device, we immediately lose the
-	 * (device-side) queues.  So there's no point in keeping the
-	 * guest side around till we drop our final reference.  This
-	 * also means that any ports which are in an open state will
-	 * have to just stop using the port, as the vqs are going
-	 * away.
-	 */
-	remove_vqs(portdev);
-	kfree(portdev);
-}
-
 static struct virtio_device_id id_table[] = {
 	{ VIRTIO_ID_CONSOLE, VIRTIO_DEV_ANY_ID },
 	{ 0 },

[PATCH 4.14 27/91] virtio_console: reset on out of memory

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael S. Tsirkin <mst@redhat.com>

commit 5c60300d68da32ca77f7f978039dc72bfc78b06b upstream.

When out of memory and we can't add ctrl vq buffers,
probe fails. Unfortunately the error handling is
out of spec: it calls del_vqs without bothering
to reset the device first.

To fix, call the full cleanup function in this case.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/virtio_console.c |   17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -2090,6 +2090,7 @@ static int virtcons_probe(struct virtio_
 
 	spin_lock_init(&portdev->ports_lock);
 	INIT_LIST_HEAD(&portdev->ports);
+	INIT_LIST_HEAD(&portdev->list);
 
 	virtio_device_ready(portdev->vdev);
 
@@ -2107,8 +2108,15 @@ static int virtcons_probe(struct virtio_
 		if (!nr_added_bufs) {
 			dev_err(&vdev->dev,
 				"Error allocating buffers for control queue\n");
-			err = -ENOMEM;
-			goto free_vqs;
+			/*
+			 * The host might want to notify mgmt sw about device
+			 * add failure.
+			 */
+			__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,
+					   VIRTIO_CONSOLE_DEVICE_READY, 0);
+			/* Device was functional: we need full cleanup. */
+			virtcons_remove(vdev);
+			return -ENOMEM;
 		}
 	} else {
 		/*
@@ -2139,11 +2147,6 @@ static int virtcons_probe(struct virtio_
 
 	return 0;
 
-free_vqs:
-	/* The host might want to notify mgmt sw about device add failure */
-	__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,
-			   VIRTIO_CONSOLE_DEVICE_READY, 0);
-	remove_vqs(portdev);
 free_chrdev:
 	unregister_chrdev(portdev->chr_major, "virtio-portsdev");
 free:

[PATCH 4.14 28/91] drm/virtio: fix vq wait_event condition

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Gerd Hoffmann <kraxel@redhat.com>

commit d02d270014f70dcab0117776b81a37b6fca745ae upstream.

Wait until we have enough space in the virt queue to actually queue up
our request.  Avoids the guest spinning in case we have a non-zero
amount of free entries but not enough for the request.

Cc: stable@vger.kernel.org
Reported-by: Alain Magloire <amagloire@blackberry.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180403095904.11152-1-kraxel@redhat.com
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/virtio/virtgpu_vq.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -291,7 +291,7 @@ retry:
 	ret = virtqueue_add_sgs(vq, sgs, outcnt, incnt, vbuf, GFP_ATOMIC);
 	if (ret == -ENOSPC) {
 		spin_unlock(&vgdev->ctrlq.qlock);
-		wait_event(vgdev->ctrlq.ack_queue, vq->num_free);
+		wait_event(vgdev->ctrlq.ack_queue, vq->num_free >= outcnt + incnt);
 		spin_lock(&vgdev->ctrlq.qlock);
 		goto retry;
 	} else {
@@ -366,7 +366,7 @@ retry:
 	ret = virtqueue_add_sgs(vq, sgs, outcnt, 0, vbuf, GFP_ATOMIC);
 	if (ret == -ENOSPC) {
 		spin_unlock(&vgdev->cursorq.qlock);
-		wait_event(vgdev->cursorq.ack_queue, vq->num_free);
+		wait_event(vgdev->cursorq.ack_queue, vq->num_free >= outcnt);
 		spin_lock(&vgdev->cursorq.qlock);
 		goto retry;
 	} else {

[PATCH 4.14 29/91] tty: Dont call panic() at tty_ldisc_init()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

commit 903f9db10f18f735e62ba447147b6c434b6af003 upstream.

syzbot is reporting kernel panic [1] triggered by memory allocation failure
at tty_ldisc_get() from tty_ldisc_init(). But since both tty_ldisc_get()
and caller of tty_ldisc_init() can cleanly handle errors, tty_ldisc_init()
does not need to call panic() when tty_ldisc_get() failed.

[1] https://syzkaller.appspot.com/bug?id=883431818e036ae6a9981156a64b821110f39187

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/tty/tty_io.c    |    5 ++++-
 drivers/tty/tty_ldisc.c |    5 +++--
 include/linux/tty.h     |    2 +-
 3 files changed, 8 insertions(+), 4 deletions(-)

--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2815,7 +2815,10 @@ struct tty_struct *alloc_tty_struct(stru
 
 	kref_init(&tty->kref);
 	tty->magic = TTY_MAGIC;
-	tty_ldisc_init(tty);
+	if (tty_ldisc_init(tty)) {
+		kfree(tty);
+		return NULL;
+	}
 	tty->session = NULL;
 	tty->pgrp = NULL;
 	mutex_init(&tty->legacy_mutex);
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -823,12 +823,13 @@ EXPORT_SYMBOL_GPL(tty_ldisc_release);
  *	the tty structure is not completely set up when this call is made.
  */
 
-void tty_ldisc_init(struct tty_struct *tty)
+int tty_ldisc_init(struct tty_struct *tty)
 {
 	struct tty_ldisc *ld = tty_ldisc_get(tty, N_TTY);
 	if (IS_ERR(ld))
-		panic("n_tty: init_tty");
+		return PTR_ERR(ld);
 	tty->ldisc = ld;
+	return 0;
 }
 
 /**
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -701,7 +701,7 @@ extern int tty_unregister_ldisc(int disc
 extern int tty_set_ldisc(struct tty_struct *tty, int disc);
 extern int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty);
 extern void tty_ldisc_release(struct tty_struct *tty);
-extern void tty_ldisc_init(struct tty_struct *tty);
+extern int __must_check tty_ldisc_init(struct tty_struct *tty);
 extern void tty_ldisc_deinit(struct tty_struct *tty);
 extern int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
 				 char *f, int count);

[PATCH 4.14 30/91] tty: n_gsm: Fix long delays with control frame timeouts in ADM mode

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Tony Lindgren <tony@atomide.com>

commit e9ec22547986dd32c5c70da78107ce35dbff1344 upstream.

Commit ea3d8465ab9b ("tty: n_gsm: Allow ADM response in addition to UA for
control dlci") added support for DLCI to stay in Asynchronous Disconnected
Mode (ADM). But we still get long delays waiting for commands to other
DLCI to complete:

--> 5) C: SABM(P)
Q>  0) C: UIH(F)
Q>  0) C: UIH(F)
Q>  0) C: UIH(F)
...

This happens because gsm_control_send() sets cretries timer to T2 that is
by default set to 34. This will cause resend for T2 times for the control
frame. In ADM mode, we will never get a response so the control frame, so
retries are just delaying all the commands.

Let's fix the issue by setting DLCI_MODE_ADM flag after detecting the ADM
mode for the control DLCI. Then we can use that in gsm_control_send() to
set retries to 1. This means the control frame will be sent once allowing
the other end at an opportunity to switch from ADM to ABM mode.

Note that retries will be decremented in gsm_control_retransmit() so
we don't want to set it to 0 here.

Fixes: ea3d8465ab9b ("tty: n_gsm: Allow ADM response in addition to UA for control dlci")
Cc: linux-serial@vger.kernel.org
Cc: Alan Cox <alan@llwyncelyn.cymru>
Cc: Dan Williams <dcbw@redhat.com>
Cc: Jiri Prchal <jiri.prchal@aksignal.cz>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Michael Nazzareno Trimarchi <michael@amarulasolutions.com>
Cc: Michael Scott <michael.scott@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Russ Gorby <russ.gorby@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/tty/n_gsm.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -133,6 +133,9 @@ struct gsm_dlci {
 	struct mutex mutex;
 
 	/* Link layer */
+	int mode;
+#define DLCI_MODE_ABM		0	/* Normal Asynchronous Balanced Mode */
+#define DLCI_MODE_ADM		1	/* Asynchronous Disconnected Mode */
 	spinlock_t lock;	/* Protects the internal state */
 	struct timer_list t1;	/* Retransmit timer for SABM and UA */
 	int retries;
@@ -1376,7 +1379,13 @@ retry:
 	ctrl->data = data;
 	ctrl->len = clen;
 	gsm->pending_cmd = ctrl;
-	gsm->cretries = gsm->n2;
+
+	/* If DLCI0 is in ADM mode skip retries, it won't respond */
+	if (gsm->dlci[0]->mode == DLCI_MODE_ADM)
+		gsm->cretries = 1;
+	else
+		gsm->cretries = gsm->n2;
+
 	mod_timer(&gsm->t2_timer, jiffies + gsm->t2 * HZ / 100);
 	gsm_control_transmit(gsm, ctrl);
 	spin_unlock_irqrestore(&gsm->control_lock, flags);
@@ -1484,6 +1493,7 @@ static void gsm_dlci_t1(unsigned long da
 			if (debug & 8)
 				pr_info("DLCI %d opening in ADM mode.\n",
 					dlci->addr);
+			dlci->mode = DLCI_MODE_ADM;
 			gsm_dlci_open(dlci);
 		} else {
 			gsm_dlci_close(dlci);

[PATCH 4.14 31/91] tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Tony Lindgren <tony@atomide.com>

commit b2d89ad9c9682e795ed6eeb9ed455789ad6cedf1 upstream.

At least on droid 4 with control channel in ADM mode, there is no response
to Modem Status Command (MSC). Currently gsmtty_modem_update() expects to
have data in dlci->modem_rx unless debug & 2 is set. This means that on
droid 4, things only work if debug & 2 is set.

Let's fix the issue by ignoring empty dlci->modem_rx for ADM mode. In
the AMD mode, CMD_MSC will never respond and gsm_process_modem() won't
get called to set dlci->modem_rx.

And according to ts_127010v140000p.pdf, MSC is only relevant if basic
option is chosen, so let's test for that too.

Fixes: ea3d8465ab9b ("tty: n_gsm: Allow ADM response in addition to UA for control dlci")
Cc: linux-serial@vger.kernel.org
Cc: Alan Cox <alan@llwyncelyn.cymru>
Cc: Dan Williams <dcbw@redhat.com>
Cc: Jiri Prchal <jiri.prchal@aksignal.cz>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Michael Nazzareno Trimarchi <michael@amarulasolutions.com>
Cc: Michael Scott <michael.scott@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Russ Gorby <russ.gorby@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/tty/n_gsm.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -2885,11 +2885,22 @@ static int gsmtty_modem_update(struct gs
 static int gsm_carrier_raised(struct tty_port *port)
 {
 	struct gsm_dlci *dlci = container_of(port, struct gsm_dlci, port);
+	struct gsm_mux *gsm = dlci->gsm;
+
 	/* Not yet open so no carrier info */
 	if (dlci->state != DLCI_OPEN)
 		return 0;
 	if (debug & 2)
 		return 1;
+
+	/*
+	 * Basic mode with control channel in ADM mode may not respond
+	 * to CMD_MSC at all and modem_rx is empty.
+	 */
+	if (gsm->encoding == 0 && gsm->dlci[0]->mode == DLCI_MODE_ADM &&
+	    !dlci->modem_rx)
+		return 1;
+
 	return dlci->modem_rx & TIOCM_CD;
 }
 

[PATCH 4.14 32/91] tty: Avoid possible error pointer dereference at tty_ldisc_restore().

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

commit 598c2d41ff44889dd8eced4f117403e472158d85 upstream.

syzbot is reporting crashes [1] triggered by memory allocation failure at
tty_ldisc_get() from tty_ldisc_restore(). While syzbot stops at WARN_ON()
due to panic_on_warn == true, panic_on_warn == false will after all trigger
an OOPS by dereferencing old->ops->num if IS_ERR(old) == true.

We can simplify tty_ldisc_restore() as three calls (old->ops->num, N_TTY,
N_NULL) to tty_ldisc_failto() in addition to avoiding possible error
pointer dereference.

If someone reports kernel panic triggered by forcing all memory allocations
for tty_ldisc_restore() to fail, we can consider adding __GFP_NOFAIL for
tty_ldisc_restore() case.

[1] https://syzkaller.appspot.com/bug?id=6ac359c61e71d22e06db7f8f88243feb11d927e7

Reported-by: syzbot+40b7287c2dc987c48c81@syzkaller.appspotmail.com
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Alan Cox <alan@llwyncelyn.cymru>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/tty/tty_ldisc.c |   13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -526,19 +526,16 @@ static int tty_ldisc_failto(struct tty_s
 static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old)
 {
 	/* There is an outstanding reference here so this is safe */
-	old = tty_ldisc_get(tty, old->ops->num);
-	WARN_ON(IS_ERR(old));
-	tty->ldisc = old;
-	tty_set_termios_ldisc(tty, old->ops->num);
-	if (tty_ldisc_open(tty, old) < 0) {
-		tty_ldisc_put(old);
+	if (tty_ldisc_failto(tty, old->ops->num) < 0) {
+		const char *name = tty_name(tty);
+
+		pr_warn("Falling back ldisc for %s.\n", name);
 		/* The traditional behaviour is to fall back to N_TTY, we
 		   want to avoid falling back to N_NULL unless we have no
 		   choice to avoid the risk of breaking anything */
 		if (tty_ldisc_failto(tty, N_TTY) < 0 &&
 		    tty_ldisc_failto(tty, N_NULL) < 0)
-			panic("Couldn't open N_NULL ldisc for %s.",
-			      tty_name(tty));
+			panic("Couldn't open N_NULL ldisc for %s.", name);
 	}
 }
 

[PATCH 4.14 33/91] tty: Use __GFP_NOFAIL for tty_ldisc_get()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

commit bcdd0ca8cb8730573afebcaae4138f8f4c8eaa20 upstream.

syzbot is reporting crashes triggered by memory allocation fault injection
at tty_ldisc_get() [1]. As an attempt to handle OOM in a graceful way, we
have tried commit 5362544bebe85071 ("tty: don't panic on OOM in
tty_set_ldisc()"). But we reverted that attempt by commit a8983d01f9b7d600
("Revert "tty: don't panic on OOM in tty_set_ldisc()"") due to reproducible
crash. We should spend resource for finding and fixing race condition bugs
rather than complicate error paths for 2 * sizeof(void *) bytes allocation
failure.

[1] https://syzkaller.appspot.com/bug?id=489d33fa386453859ead58ff5171d43772b13aa3

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+40b7287c2dc987c48c81@syzkaller.appspotmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/tty/tty_ldisc.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -175,12 +175,11 @@ static struct tty_ldisc *tty_ldisc_get(s
 			return ERR_CAST(ldops);
 	}
 
-	ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL);
-	if (ld == NULL) {
-		put_ldops(ldops);
-		return ERR_PTR(-ENOMEM);
-	}
-
+	/*
+	 * There is no way to handle allocation failure of only 16 bytes.
+	 * Let's simplify error handling and save more memory.
+	 */
+	ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL | __GFP_NOFAIL);
 	ld->ops = ldops;
 	ld->tty = tty;
 

[PATCH 4.14 34/91] ALSA: dice: fix OUI for TC group

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Sakamoto <o-takashi@sakamocchi.jp>

commit 10412c420af9ba1f3de8483a95d360e5eb5bfc84 upstream.

OUI for TC Electronic is 0x000166, for TC GROUP A/S. 0x001486 is for Echo
Digital Audio Corporation.

Fixes: 7cafc65b3aa1 ('ALSA: dice: force to add two pcm devices for listed models')
Cc: <stable@vger.kernel.org> # v4.6+
Reference: http://standards-oui.ieee.org/oui/oui.txt
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/firewire/dice/dice.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/firewire/dice/dice.c
+++ b/sound/firewire/dice/dice.c
@@ -14,7 +14,7 @@ MODULE_LICENSE("GPL v2");
 #define OUI_WEISS		0x001c6a
 #define OUI_LOUD		0x000ff2
 #define OUI_FOCUSRITE		0x00130e
-#define OUI_TCELECTRONIC	0x001486
+#define OUI_TCELECTRONIC	0x000166
 
 #define DICE_CATEGORY_ID	0x04
 #define WEISS_CATEGORY_ID	0x00

[PATCH 4.14 35/91] ALSA: dice: fix error path to destroy initialized stream data

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Sakamoto <o-takashi@sakamocchi.jp>

commit 0f925660a7bc49b269c163249a5d06da3a0c7b0a upstream.

In error path of snd_dice_stream_init_duplex(), stream data for incoming
packet can be left to be initialized.

This commit fixes it.

Fixes: 436b5abe2224 ('ALSA: dice: handle whole available isochronous streams')
Cc: <stable@vger.kernel.org> # v4.6+
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/firewire/dice/dice-stream.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/firewire/dice/dice-stream.c
+++ b/sound/firewire/dice/dice-stream.c
@@ -435,7 +435,7 @@ int snd_dice_stream_init_duplex(struct s
 		err = init_stream(dice, AMDTP_IN_STREAM, i);
 		if (err < 0) {
 			for (; i >= 0; i--)
-				destroy_stream(dice, AMDTP_OUT_STREAM, i);
+				destroy_stream(dice, AMDTP_IN_STREAM, i);
 			goto end;
 		}
 	}

[PATCH 4.14 36/91] ALSA: hda - Skip jack and others for non-existing PCM streams

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit 8a7d6003df41cb16f6b3b620da044fbd92d2f5ee upstream.

When CONFIG_SND_DYNAMIC_MINORS isn't set, there are only limited
number of devices available, and HD-audio, especially with HDMI/DP
codec, will fail to create more than two devices.

The driver warns about the lack of such devices and skips the PCM
device creations, but the HDMI driver still tries to create the
corresponding JACK, SPDIF and ELD controls even for the non-existing
PCM substreams.  This results in confusion on user-space, and even may
break the operation.

Similarly, Intel HDMI/DP codec builds the ELD notification from i915
graphics driver, and this may be broken if a notification is sent for
the non-existing PCM stream.

This patch adds the check of the existence of the assigned PCM
substream in the both scenarios above, and skips the further operation
if the PCM substream is not assigned.

Fixes: 9152085defb6 ("ALSA: hda - add DP MST audio support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/patch_hdmi.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1383,6 +1383,8 @@ static void hdmi_pcm_setup_pin(struct hd
 		pcm = get_pcm_rec(spec, per_pin->pcm_idx);
 	else
 		return;
+	if (!pcm->pcm)
+		return;
 	if (!test_bit(per_pin->pcm_idx, &spec->pcm_in_use))
 		return;
 
@@ -2151,8 +2153,13 @@ static int generic_hdmi_build_controls(s
 	int dev, err;
 	int pin_idx, pcm_idx;
 
-
 	for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
+		if (!get_pcm_rec(spec, pcm_idx)->pcm) {
+			/* no PCM: mark this for skipping permanently */
+			set_bit(pcm_idx, &spec->pcm_bitmap);
+			continue;
+		}
+
 		err = generic_hdmi_build_jack(codec, pcm_idx);
 		if (err < 0)
 			return err;

[PATCH 4.14 37/91] ALSA: opl3: Hardening for potential Spectre v1

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit 7f054a5bee0987f1e2d4e59daea462421c76f2cb upstream.

As recently Smatch suggested, one place in OPL3 driver may expand the
array directly from the user-space value with speculation:
  sound/drivers/opl3/opl3_synth.c:476 snd_opl3_set_voice() warn: potential spectre issue 'snd_opl3_regmap'

This patch puts array_index_nospec() for hardening against it.

BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/drivers/opl3/opl3_synth.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/sound/drivers/opl3/opl3_synth.c
+++ b/sound/drivers/opl3/opl3_synth.c
@@ -21,6 +21,7 @@
 
 #include <linux/slab.h>
 #include <linux/export.h>
+#include <linux/nospec.h>
 #include <sound/opl3.h>
 #include <sound/asound_fm.h>
 
@@ -448,7 +449,7 @@ static int snd_opl3_set_voice(struct snd
 {
 	unsigned short reg_side;
 	unsigned char op_offset;
-	unsigned char voice_offset;
+	unsigned char voice_offset, voice_op;
 
 	unsigned short opl3_reg;
 	unsigned char reg_val;
@@ -473,7 +474,9 @@ static int snd_opl3_set_voice(struct snd
 		voice_offset = voice->voice - MAX_OPL2_VOICES;
 	}
 	/* Get register offset of operator */
-	op_offset = snd_opl3_regmap[voice_offset][voice->op];
+	voice_offset = array_index_nospec(voice_offset, MAX_OPL2_VOICES);
+	voice_op = array_index_nospec(voice->op, 4);
+	op_offset = snd_opl3_regmap[voice_offset][voice_op];
 
 	reg_val = 0x00;
 	/* Set amplitude modulation (tremolo) effect */

[PATCH 4.14 38/91] ALSA: asihpi: Hardening for potential Spectre v1

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit f9d94b57e30fd1575b4935045b32d738668aa74b upstream.

As recently Smatch suggested, a couple of places in ASIHPI driver may
expand the array directly from the user-space value with speculation:
  sound/pci/asihpi/hpimsginit.c:70 hpi_init_response() warn: potential spectre issue 'res_size' (local cap)
  sound/pci/asihpi/hpioctl.c:189 asihpi_hpi_ioctl() warn: potential spectre issue 'adapters'

This patch puts array_index_nospec() for hardening against them.

BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/asihpi/hpimsginit.c |   13 +++++++++----
 sound/pci/asihpi/hpioctl.c    |    4 +++-
 2 files changed, 12 insertions(+), 5 deletions(-)

--- a/sound/pci/asihpi/hpimsginit.c
+++ b/sound/pci/asihpi/hpimsginit.c
@@ -23,6 +23,7 @@
 
 #include "hpi_internal.h"
 #include "hpimsginit.h"
+#include <linux/nospec.h>
 
 /* The actual message size for each object type */
 static u16 msg_size[HPI_OBJ_MAXINDEX + 1] = HPI_MESSAGE_SIZE_BY_OBJECT;
@@ -39,10 +40,12 @@ static void hpi_init_message(struct hpi_
 {
 	u16 size;
 
-	if ((object > 0) && (object <= HPI_OBJ_MAXINDEX))
+	if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) {
+		object = array_index_nospec(object, HPI_OBJ_MAXINDEX + 1);
 		size = msg_size[object];
-	else
+	} else {
 		size = sizeof(*phm);
+	}
 
 	memset(phm, 0, size);
 	phm->size = size;
@@ -66,10 +69,12 @@ void hpi_init_response(struct hpi_respon
 {
 	u16 size;
 
-	if ((object > 0) && (object <= HPI_OBJ_MAXINDEX))
+	if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) {
+		object = array_index_nospec(object, HPI_OBJ_MAXINDEX + 1);
 		size = res_size[object];
-	else
+	} else {
 		size = sizeof(*phr);
+	}
 
 	memset(phr, 0, sizeof(*phr));
 	phr->size = size;
--- a/sound/pci/asihpi/hpioctl.c
+++ b/sound/pci/asihpi/hpioctl.c
@@ -33,6 +33,7 @@
 #include <linux/stringify.h>
 #include <linux/module.h>
 #include <linux/vmalloc.h>
+#include <linux/nospec.h>
 
 #ifdef MODULE_FIRMWARE
 MODULE_FIRMWARE("asihpi/dsp5000.bin");
@@ -186,7 +187,8 @@ long asihpi_hpi_ioctl(struct file *file,
 		struct hpi_adapter *pa = NULL;
 
 		if (hm->h.adapter_index < ARRAY_SIZE(adapters))
-			pa = &adapters[hm->h.adapter_index];
+			pa = &adapters[array_index_nospec(hm->h.adapter_index,
+							  ARRAY_SIZE(adapters))];
 
 		if (!pa || !pa->adapter || !pa->adapter->type) {
 			hpi_init_response(&hr->r0, hm->h.object,

[PATCH 4.14 39/91] ALSA: hdspm: Hardening for potential Spectre v1

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit 10513142a7114d251670361ad40cba2c61403406 upstream.

As recently Smatch suggested, a couple of places in HDSP MADI driver
may expand the array directly from the user-space value with
speculation:
  sound/pci/rme9652/hdspm.c:5717 snd_hdspm_channel_info() warn: potential spectre issue 'hdspm->channel_map_out' (local cap)
  sound/pci/rme9652/hdspm.c:5734 snd_hdspm_channel_info() warn: potential spectre issue 'hdspm->channel_map_in' (local cap)

This patch puts array_index_nospec() for hardening against them.

BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/rme9652/hdspm.c |   24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -137,6 +137,7 @@
 #include <linux/pci.h>
 #include <linux/math64.h>
 #include <linux/io.h>
+#include <linux/nospec.h>
 
 #include <sound/core.h>
 #include <sound/control.h>
@@ -5698,40 +5699,43 @@ static int snd_hdspm_channel_info(struct
 		struct snd_pcm_channel_info *info)
 {
 	struct hdspm *hdspm = snd_pcm_substream_chip(substream);
+	unsigned int channel = info->channel;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		if (snd_BUG_ON(info->channel >= hdspm->max_channels_out)) {
+		if (snd_BUG_ON(channel >= hdspm->max_channels_out)) {
 			dev_info(hdspm->card->dev,
 				 "snd_hdspm_channel_info: output channel out of range (%d)\n",
-				 info->channel);
+				 channel);
 			return -EINVAL;
 		}
 
-		if (hdspm->channel_map_out[info->channel] < 0) {
+		channel = array_index_nospec(channel, hdspm->max_channels_out);
+		if (hdspm->channel_map_out[channel] < 0) {
 			dev_info(hdspm->card->dev,
 				 "snd_hdspm_channel_info: output channel %d mapped out\n",
-				 info->channel);
+				 channel);
 			return -EINVAL;
 		}
 
-		info->offset = hdspm->channel_map_out[info->channel] *
+		info->offset = hdspm->channel_map_out[channel] *
 			HDSPM_CHANNEL_BUFFER_BYTES;
 	} else {
-		if (snd_BUG_ON(info->channel >= hdspm->max_channels_in)) {
+		if (snd_BUG_ON(channel >= hdspm->max_channels_in)) {
 			dev_info(hdspm->card->dev,
 				 "snd_hdspm_channel_info: input channel out of range (%d)\n",
-				 info->channel);
+				 channel);
 			return -EINVAL;
 		}
 
-		if (hdspm->channel_map_in[info->channel] < 0) {
+		channel = array_index_nospec(channel, hdspm->max_channels_in);
+		if (hdspm->channel_map_in[channel] < 0) {
 			dev_info(hdspm->card->dev,
 				 "snd_hdspm_channel_info: input channel %d mapped out\n",
-				 info->channel);
+				 channel);
 			return -EINVAL;
 		}
 
-		info->offset = hdspm->channel_map_in[info->channel] *
+		info->offset = hdspm->channel_map_in[channel] *
 			HDSPM_CHANNEL_BUFFER_BYTES;
 	}
 

[PATCH 4.14 40/91] ALSA: rme9652: Hardening for potential Spectre v1

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit f526afcd8f71945c23ce581d7864ace93de8a4f7 upstream.

As recently Smatch suggested, one place in RME9652 driver may expand
the array directly from the user-space value with speculation:
  sound/pci/rme9652/rme9652.c:2074 snd_rme9652_channel_info() warn: potential spectre issue 'rme9652->channel_map' (local cap)

This patch puts array_index_nospec() for hardening against it.

BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/rme9652/rme9652.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/sound/pci/rme9652/rme9652.c
+++ b/sound/pci/rme9652/rme9652.c
@@ -26,6 +26,7 @@
 #include <linux/pci.h>
 #include <linux/module.h>
 #include <linux/io.h>
+#include <linux/nospec.h>
 
 #include <sound/core.h>
 #include <sound/control.h>
@@ -2071,9 +2072,10 @@ static int snd_rme9652_channel_info(stru
 	if (snd_BUG_ON(info->channel >= RME9652_NCHANNELS))
 		return -EINVAL;
 
-	if ((chn = rme9652->channel_map[info->channel]) < 0) {
+	chn = rme9652->channel_map[array_index_nospec(info->channel,
+						      RME9652_NCHANNELS)];
+	if (chn < 0)
 		return -EINVAL;
-	}
 
 	info->offset = chn * RME9652_CHANNEL_BUFFER_BYTES;
 	info->first = 0;

[PATCH 4.14 41/91] ALSA: control: Hardening for potential Spectre v1

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit 088e861edffb84879cf0c0d1b02eda078c3a0ffe upstream.

As recently Smatch suggested, a few places in ALSA control core codes
may expand the array directly from the user-space value with
speculation:

  sound/core/control.c:1003 snd_ctl_elem_lock() warn: potential spectre issue 'kctl->vd'
  sound/core/control.c:1031 snd_ctl_elem_unlock() warn: potential spectre issue 'kctl->vd'
  sound/core/control.c:844 snd_ctl_elem_info() warn: potential spectre issue 'kctl->vd'
  sound/core/control.c:891 snd_ctl_elem_read() warn: potential spectre issue 'kctl->vd'
  sound/core/control.c:939 snd_ctl_elem_write() warn: potential spectre issue 'kctl->vd'

Although all these seem doing only the first load without further
reference, we may want to stay in a safer side, so hardening with
array_index_nospec() would still make sense.

In this patch, we put array_index_nospec() to the common
snd_ctl_get_ioff*() helpers instead of each caller.  These helpers are
also referred from some drivers, too, and basically all usages are to
calculate the array index from the user-space value, hence it's better
to cover there.

BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/sound/control.h |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/include/sound/control.h
+++ b/include/sound/control.h
@@ -23,6 +23,7 @@
  */
 
 #include <linux/wait.h>
+#include <linux/nospec.h>
 #include <sound/asound.h>
 
 #define snd_kcontrol_chip(kcontrol) ((kcontrol)->private_data)
@@ -148,12 +149,14 @@ int snd_ctl_get_preferred_subdevice(stru
 
 static inline unsigned int snd_ctl_get_ioffnum(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
 {
-	return id->numid - kctl->id.numid;
+	unsigned int ioff = id->numid - kctl->id.numid;
+	return array_index_nospec(ioff, kctl->count);
 }
 
 static inline unsigned int snd_ctl_get_ioffidx(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
 {
-	return id->index - kctl->id.index;
+	unsigned int ioff = id->index - kctl->id.index;
+	return array_index_nospec(ioff, kctl->count);
 }
 
 static inline unsigned int snd_ctl_get_ioff(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)

[PATCH 4.14 42/91] ALSA: pcm: Return negative delays from SNDRV_PCM_IOCTL_DELAY.

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Jeffery Miller <jmiller@neverware.com>

commit 912e4c332037e7ed063c164985c36fb2b549ea3a upstream.

The commit c2c86a97175f ("ALSA: pcm: Remove set_fs() in PCM core code")
changed SNDRV_PCM_IOCTL_DELAY to return an inconsistent error instead of a
negative delay.  Originally the call would succeed and return the negative
delay.  The Chromium OS Audio Server (CRAS) gets confused and hangs when
the error is returned instead of the negative delay.

Help CRAS avoid the issue by rolling back the behavior to return a
negative delay instead of an error.

Fixes: c2c86a97175f ("ALSA: pcm: Remove set_fs() in PCM core code")
Signed-off-by: Jeffery Miller <jmiller@neverware.com>
Cc: <stable@vger.kernel.org> # v4.13+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/core/pcm_compat.c |    7 ++++---
 sound/core/pcm_native.c |   23 +++++++++++------------
 2 files changed, 15 insertions(+), 15 deletions(-)

--- a/sound/core/pcm_compat.c
+++ b/sound/core/pcm_compat.c
@@ -27,10 +27,11 @@ static int snd_pcm_ioctl_delay_compat(st
 				      s32 __user *src)
 {
 	snd_pcm_sframes_t delay;
+	int err;
 
-	delay = snd_pcm_delay(substream);
-	if (delay < 0)
-		return delay;
+	err = snd_pcm_delay(substream, &delay);
+	if (err)
+		return err;
 	if (put_user(delay, src))
 		return -EFAULT;
 	return 0;
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2689,7 +2689,8 @@ static int snd_pcm_hwsync(struct snd_pcm
 	return err;
 }
 		
-static snd_pcm_sframes_t snd_pcm_delay(struct snd_pcm_substream *substream)
+static int snd_pcm_delay(struct snd_pcm_substream *substream,
+			 snd_pcm_sframes_t *delay)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	int err;
@@ -2705,7 +2706,9 @@ static snd_pcm_sframes_t snd_pcm_delay(s
 		n += runtime->delay;
 	}
 	snd_pcm_stream_unlock_irq(substream);
-	return err < 0 ? err : n;
+	if (!err)
+		*delay = n;
+	return err;
 }
 		
 static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream,
@@ -2913,11 +2916,13 @@ static int snd_pcm_common_ioctl(struct f
 		return snd_pcm_hwsync(substream);
 	case SNDRV_PCM_IOCTL_DELAY:
 	{
-		snd_pcm_sframes_t delay = snd_pcm_delay(substream);
+		snd_pcm_sframes_t delay;
 		snd_pcm_sframes_t __user *res = arg;
+		int err;
 
-		if (delay < 0)
-			return delay;
+		err = snd_pcm_delay(substream, &delay);
+		if (err)
+			return err;
 		if (put_user(delay, res))
 			return -EFAULT;
 		return 0;
@@ -3005,13 +3010,7 @@ int snd_pcm_kernel_ioctl(struct snd_pcm_
 	case SNDRV_PCM_IOCTL_DROP:
 		return snd_pcm_drop(substream);
 	case SNDRV_PCM_IOCTL_DELAY:
-	{
-		result = snd_pcm_delay(substream);
-		if (result < 0)
-			return result;
-		*frames = result;
-		return 0;
-	}
+		return snd_pcm_delay(substream, frames);
 	default:
 		return -EINVAL;
 	}

[PATCH 4.14 43/91] ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: David Henningsson <diwic@ubuntu.com>

commit f853dcaae2f5bbe021161e421bd1576845bae8f6 upstream.

It looks like a simple mistake that this struct member
was forgotten.

Audio_tstamp isn't used much, and on some archs (such as x86) this
ioctl is not used by default, so that might be the reason why this
has slipped for so long.

Fixes: 4eeaaeaea1ce ("ALSA: core: add hooks for audio timestamps")
Signed-off-by: David Henningsson <diwic@ubuntu.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Cc: <stable@vger.kernel.org> # v3.8+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/core/pcm_native.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2751,6 +2751,7 @@ static int snd_pcm_sync_ptr(struct snd_p
 	sync_ptr.s.status.hw_ptr = status->hw_ptr;
 	sync_ptr.s.status.tstamp = status->tstamp;
 	sync_ptr.s.status.suspended_state = status->suspended_state;
+	sync_ptr.s.status.audio_tstamp = status->audio_tstamp;
 	snd_pcm_stream_unlock_irq(substream);
 	if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr)))
 		return -EFAULT;

[PATCH 4.14 44/91] ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit f5e94b4c6ebdabe0f602d796e0430180927521a0 upstream.

When get_synthdev() is called for a MIDI device, it returns the fixed
midi_synth_dev without the use refcounting.  OTOH, the caller is
supposed to unreference unconditionally after the usage, so this would
lead to unbalanced refcount.

This patch corrects the behavior and keep up the refcount balance also
for the MIDI synth device.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/core/seq/oss/seq_oss_synth.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

--- a/sound/core/seq/oss/seq_oss_synth.c
+++ b/sound/core/seq/oss/seq_oss_synth.c
@@ -363,10 +363,14 @@ get_synthdev(struct seq_oss_devinfo *dp,
 		return NULL;
 	if (! dp->synths[dev].opened)
 		return NULL;
-	if (dp->synths[dev].is_midi)
-		return &midi_synth_dev;
-	if ((rec = get_sdev(dev)) == NULL)
-		return NULL;
+	if (dp->synths[dev].is_midi) {
+		rec = &midi_synth_dev;
+		snd_use_lock_use(&rec->use_lock);
+	} else {
+		rec = get_sdev(dev);
+		if (!rec)
+			return NULL;
+	}
 	if (! rec->opened) {
 		snd_use_lock_free(&rec->use_lock);
 		return NULL;

[PATCH 4.14 45/91] ALSA: seq: oss: Hardening for potential Spectre v1

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit 8d218dd8116695ecda7164f97631c069938aa22e upstream.

As Smatch recently suggested, a few places in OSS sequencer codes may
expand the array directly from the user-space value with speculation,
namely there are a significant amount of references to either
info->ch[] or dp->synths[] array:

  sound/core/seq/oss/seq_oss_event.c:315 note_on_event() warn: potential spectre issue 'info->ch' (local cap)
  sound/core/seq/oss/seq_oss_event.c:362 note_off_event() warn: potential spectre issue 'info->ch' (local cap)
  sound/core/seq/oss/seq_oss_synth.c:470 snd_seq_oss_synth_load_patch() warn: potential spectre issue 'dp->synths' (local cap)
  sound/core/seq/oss/seq_oss_event.c:293 note_on_event() warn: potential spectre issue 'dp->synths'
  sound/core/seq/oss/seq_oss_event.c:353 note_off_event() warn: potential spectre issue 'dp->synths'
  sound/core/seq/oss/seq_oss_synth.c:506 snd_seq_oss_synth_sysex() warn: potential spectre issue 'dp->synths'
  sound/core/seq/oss/seq_oss_synth.c:580 snd_seq_oss_synth_ioctl() warn: potential spectre issue 'dp->synths'

Although all these seem doing only the first load without further
reference, we may want to stay in a safer side, so hardening with
array_index_nospec() would still make sense.

We may put array_index_nospec() at each place, but here we take a
different approach:

- For dp->synths[], change the helpers to retrieve seq_oss_synthinfo
  pointer directly instead of the array expansion at each place

- For info->ch[], harden in a normal way, as there are only a couple
  of places

As a result, the existing helper, snd_seq_oss_synth_is_valid() is
replaced with snd_seq_oss_synth_info().  Also, we cover MIDI device
where a similar array expansion is done, too, although it wasn't
reported by Smatch.

BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/core/seq/oss/seq_oss_event.c |   15 ++++---
 sound/core/seq/oss/seq_oss_midi.c  |    2 
 sound/core/seq/oss/seq_oss_synth.c |   75 ++++++++++++++++++++-----------------
 sound/core/seq/oss/seq_oss_synth.h |    3 -
 4 files changed, 55 insertions(+), 40 deletions(-)

--- a/sound/core/seq/oss/seq_oss_event.c
+++ b/sound/core/seq/oss/seq_oss_event.c
@@ -26,6 +26,7 @@
 #include <sound/seq_oss_legacy.h>
 #include "seq_oss_readq.h"
 #include "seq_oss_writeq.h"
+#include <linux/nospec.h>
 
 
 /*
@@ -287,10 +288,10 @@ note_on_event(struct seq_oss_devinfo *dp
 {
 	struct seq_oss_synthinfo *info;
 
-	if (!snd_seq_oss_synth_is_valid(dp, dev))
+	info = snd_seq_oss_synth_info(dp, dev);
+	if (!info)
 		return -ENXIO;
 
-	info = &dp->synths[dev];
 	switch (info->arg.event_passing) {
 	case SNDRV_SEQ_OSS_PROCESS_EVENTS:
 		if (! info->ch || ch < 0 || ch >= info->nr_voices) {
@@ -298,6 +299,7 @@ note_on_event(struct seq_oss_devinfo *dp
 			return set_note_event(dp, dev, SNDRV_SEQ_EVENT_NOTEON, ch, note, vel, ev);
 		}
 
+		ch = array_index_nospec(ch, info->nr_voices);
 		if (note == 255 && info->ch[ch].note >= 0) {
 			/* volume control */
 			int type;
@@ -347,10 +349,10 @@ note_off_event(struct seq_oss_devinfo *d
 {
 	struct seq_oss_synthinfo *info;
 
-	if (!snd_seq_oss_synth_is_valid(dp, dev))
+	info = snd_seq_oss_synth_info(dp, dev);
+	if (!info)
 		return -ENXIO;
 
-	info = &dp->synths[dev];
 	switch (info->arg.event_passing) {
 	case SNDRV_SEQ_OSS_PROCESS_EVENTS:
 		if (! info->ch || ch < 0 || ch >= info->nr_voices) {
@@ -358,6 +360,7 @@ note_off_event(struct seq_oss_devinfo *d
 			return set_note_event(dp, dev, SNDRV_SEQ_EVENT_NOTEON, ch, note, vel, ev);
 		}
 
+		ch = array_index_nospec(ch, info->nr_voices);
 		if (info->ch[ch].note >= 0) {
 			note = info->ch[ch].note;
 			info->ch[ch].vel = 0;
@@ -381,7 +384,7 @@ note_off_event(struct seq_oss_devinfo *d
 static int
 set_note_event(struct seq_oss_devinfo *dp, int dev, int type, int ch, int note, int vel, struct snd_seq_event *ev)
 {
-	if (! snd_seq_oss_synth_is_valid(dp, dev))
+	if (!snd_seq_oss_synth_info(dp, dev))
 		return -ENXIO;
 	
 	ev->type = type;
@@ -399,7 +402,7 @@ set_note_event(struct seq_oss_devinfo *d
 static int
 set_control_event(struct seq_oss_devinfo *dp, int dev, int type, int ch, int param, int val, struct snd_seq_event *ev)
 {
-	if (! snd_seq_oss_synth_is_valid(dp, dev))
+	if (!snd_seq_oss_synth_info(dp, dev))
 		return -ENXIO;
 	
 	ev->type = type;
--- a/sound/core/seq/oss/seq_oss_midi.c
+++ b/sound/core/seq/oss/seq_oss_midi.c
@@ -29,6 +29,7 @@
 #include "../seq_lock.h"
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/nospec.h>
 
 
 /*
@@ -315,6 +316,7 @@ get_mididev(struct seq_oss_devinfo *dp,
 {
 	if (dev < 0 || dev >= dp->max_mididev)
 		return NULL;
+	dev = array_index_nospec(dev, dp->max_mididev);
 	return get_mdev(dev);
 }
 
--- a/sound/core/seq/oss/seq_oss_synth.c
+++ b/sound/core/seq/oss/seq_oss_synth.c
@@ -26,6 +26,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/nospec.h>
 
 /*
  * constants
@@ -339,17 +340,13 @@ snd_seq_oss_synth_cleanup(struct seq_oss
 	dp->max_synthdev = 0;
 }
 
-/*
- * check if the specified device is MIDI mapped device
- */
-static int
-is_midi_dev(struct seq_oss_devinfo *dp, int dev)
+static struct seq_oss_synthinfo *
+get_synthinfo_nospec(struct seq_oss_devinfo *dp, int dev)
 {
 	if (dev < 0 || dev >= dp->max_synthdev)
-		return 0;
-	if (dp->synths[dev].is_midi)
-		return 1;
-	return 0;
+		return NULL;
+	dev = array_index_nospec(dev, SNDRV_SEQ_OSS_MAX_SYNTH_DEVS);
+	return &dp->synths[dev];
 }
 
 /*
@@ -359,11 +356,13 @@ static struct seq_oss_synth *
 get_synthdev(struct seq_oss_devinfo *dp, int dev)
 {
 	struct seq_oss_synth *rec;
-	if (dev < 0 || dev >= dp->max_synthdev)
+	struct seq_oss_synthinfo *info = get_synthinfo_nospec(dp, dev);
+
+	if (!info)
 		return NULL;
-	if (! dp->synths[dev].opened)
+	if (!info->opened)
 		return NULL;
-	if (dp->synths[dev].is_midi) {
+	if (info->is_midi) {
 		rec = &midi_synth_dev;
 		snd_use_lock_use(&rec->use_lock);
 	} else {
@@ -406,10 +405,8 @@ snd_seq_oss_synth_reset(struct seq_oss_d
 	struct seq_oss_synth *rec;
 	struct seq_oss_synthinfo *info;
 
-	if (snd_BUG_ON(dev < 0 || dev >= dp->max_synthdev))
-		return;
-	info = &dp->synths[dev];
-	if (! info->opened)
+	info = get_synthinfo_nospec(dp, dev);
+	if (!info || !info->opened)
 		return;
 	if (info->sysex)
 		info->sysex->len = 0; /* reset sysex */
@@ -458,12 +455,14 @@ snd_seq_oss_synth_load_patch(struct seq_
 			    const char __user *buf, int p, int c)
 {
 	struct seq_oss_synth *rec;
+	struct seq_oss_synthinfo *info;
 	int rc;
 
-	if (dev < 0 || dev >= dp->max_synthdev)
+	info = get_synthinfo_nospec(dp, dev);
+	if (!info)
 		return -ENXIO;
 
-	if (is_midi_dev(dp, dev))
+	if (info->is_midi)
 		return 0;
 	if ((rec = get_synthdev(dp, dev)) == NULL)
 		return -ENXIO;
@@ -471,24 +470,25 @@ snd_seq_oss_synth_load_patch(struct seq_
 	if (rec->oper.load_patch == NULL)
 		rc = -ENXIO;
 	else
-		rc = rec->oper.load_patch(&dp->synths[dev].arg, fmt, buf, p, c);
+		rc = rec->oper.load_patch(&info->arg, fmt, buf, p, c);
 	snd_use_lock_free(&rec->use_lock);
 	return rc;
 }
 
 /*
- * check if the device is valid synth device
+ * check if the device is valid synth device and return the synth info
  */
-int
-snd_seq_oss_synth_is_valid(struct seq_oss_devinfo *dp, int dev)
+struct seq_oss_synthinfo *
+snd_seq_oss_synth_info(struct seq_oss_devinfo *dp, int dev)
 {
 	struct seq_oss_synth *rec;
+
 	rec = get_synthdev(dp, dev);
 	if (rec) {
 		snd_use_lock_free(&rec->use_lock);
-		return 1;
+		return get_synthinfo_nospec(dp, dev);
 	}
-	return 0;
+	return NULL;
 }
 
 
@@ -503,16 +503,18 @@ snd_seq_oss_synth_sysex(struct seq_oss_d
 	int i, send;
 	unsigned char *dest;
 	struct seq_oss_synth_sysex *sysex;
+	struct seq_oss_synthinfo *info;
 
-	if (! snd_seq_oss_synth_is_valid(dp, dev))
+	info = snd_seq_oss_synth_info(dp, dev);
+	if (!info)
 		return -ENXIO;
 
-	sysex = dp->synths[dev].sysex;
+	sysex = info->sysex;
 	if (sysex == NULL) {
 		sysex = kzalloc(sizeof(*sysex), GFP_KERNEL);
 		if (sysex == NULL)
 			return -ENOMEM;
-		dp->synths[dev].sysex = sysex;
+		info->sysex = sysex;
 	}
 
 	send = 0;
@@ -557,10 +559,12 @@ snd_seq_oss_synth_sysex(struct seq_oss_d
 int
 snd_seq_oss_synth_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_event *ev)
 {
-	if (! snd_seq_oss_synth_is_valid(dp, dev))
+	struct seq_oss_synthinfo *info = snd_seq_oss_synth_info(dp, dev);
+
+	if (!info)
 		return -EINVAL;
-	snd_seq_oss_fill_addr(dp, ev, dp->synths[dev].arg.addr.client,
-			      dp->synths[dev].arg.addr.port);
+	snd_seq_oss_fill_addr(dp, ev, info->arg.addr.client,
+			      info->arg.addr.port);
 	return 0;
 }
 
@@ -572,16 +576,18 @@ int
 snd_seq_oss_synth_ioctl(struct seq_oss_devinfo *dp, int dev, unsigned int cmd, unsigned long addr)
 {
 	struct seq_oss_synth *rec;
+	struct seq_oss_synthinfo *info;
 	int rc;
 
-	if (is_midi_dev(dp, dev))
+	info = get_synthinfo_nospec(dp, dev);
+	if (!info || info->is_midi)
 		return -ENXIO;
 	if ((rec = get_synthdev(dp, dev)) == NULL)
 		return -ENXIO;
 	if (rec->oper.ioctl == NULL)
 		rc = -ENXIO;
 	else
-		rc = rec->oper.ioctl(&dp->synths[dev].arg, cmd, addr);
+		rc = rec->oper.ioctl(&info->arg, cmd, addr);
 	snd_use_lock_free(&rec->use_lock);
 	return rc;
 }
@@ -593,7 +599,10 @@ snd_seq_oss_synth_ioctl(struct seq_oss_d
 int
 snd_seq_oss_synth_raw_event(struct seq_oss_devinfo *dp, int dev, unsigned char *data, struct snd_seq_event *ev)
 {
-	if (! snd_seq_oss_synth_is_valid(dp, dev) || is_midi_dev(dp, dev))
+	struct seq_oss_synthinfo *info;
+
+	info = snd_seq_oss_synth_info(dp, dev);
+	if (!info || info->is_midi)
 		return -ENXIO;
 	ev->type = SNDRV_SEQ_EVENT_OSS;
 	memcpy(ev->data.raw8.d, data, 8);
--- a/sound/core/seq/oss/seq_oss_synth.h
+++ b/sound/core/seq/oss/seq_oss_synth.h
@@ -37,7 +37,8 @@ void snd_seq_oss_synth_cleanup(struct se
 void snd_seq_oss_synth_reset(struct seq_oss_devinfo *dp, int dev);
 int snd_seq_oss_synth_load_patch(struct seq_oss_devinfo *dp, int dev, int fmt,
 				 const char __user *buf, int p, int c);
-int snd_seq_oss_synth_is_valid(struct seq_oss_devinfo *dp, int dev);
+struct seq_oss_synthinfo *snd_seq_oss_synth_info(struct seq_oss_devinfo *dp,
+						 int dev);
 int snd_seq_oss_synth_sysex(struct seq_oss_devinfo *dp, int dev, unsigned char *buf,
 			    struct snd_seq_event *ev);
 int snd_seq_oss_synth_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_event *ev);

[PATCH 4.14 46/91] ALSA: hda: Hardening for potential Spectre v1

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@suse.de>

commit 69fa6f19b95597618ab30438a27b67ad93daa7c7 upstream.

As recently Smatch suggested, one place in HD-audio hwdep ioctl codes
may expand the array directly from the user-space value with
speculation:
  sound/pci/hda/hda_local.h:467 get_wcaps() warn: potential spectre issue 'codec->wcaps'

As get_wcaps() itself is a fairly frequently called inline function,
and there is only one single call with a user-space value, we replace
only the latter one to open-code locally with array_index_nospec()
hardening in this patch.

BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/hda_hwdep.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/compat.h>
+#include <linux/nospec.h>
 #include <sound/core.h>
 #include "hda_codec.h"
 #include "hda_local.h"
@@ -51,7 +52,16 @@ static int get_wcap_ioctl(struct hda_cod
 	
 	if (get_user(verb, &arg->verb))
 		return -EFAULT;
-	res = get_wcaps(codec, verb >> 24);
+	/* open-code get_wcaps(verb>>24) with nospec */
+	verb >>= 24;
+	if (verb < codec->core.start_nid ||
+	    verb >= codec->core.start_nid + codec->core.num_nodes) {
+		res = 0;
+	} else {
+		verb -= codec->core.start_nid;
+		verb = array_index_nospec(verb, codec->core.num_nodes);
+		res = codec->wcaps[verb];
+	}
 	if (put_user(res, &arg->res))
 		return -EFAULT;
 	return 0;

[PATCH 4.14 47/91] ALSA: hda/realtek - Add some fixes for ALC233

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Kailang Yang <kailang@realtek.com>

commit ea04a1dbf8b1d6af759d58e705636fde48583f8f upstream.

Fill COEF to change EAPD to verb control.
Assigned codec type.

This is an additional fix over 92f974df3460 ("ALSA: hda/realtek - New
vendor ID for ALC233").

[ More notes:
  according to Kailang, the chip is 10ec:0235 bonding for ALC233b,
  which is equivalent with ALC255.  It's only used for Lenovo.
  The chip needs no alc_process_coef_fw() for headset unlike ALC255. ]

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/patch_realtek.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -331,6 +331,7 @@ static void alc_fill_eapd_coef(struct hd
 		/* fallthrough */
 	case 0x10ec0215:
 	case 0x10ec0233:
+	case 0x10ec0235:
 	case 0x10ec0236:
 	case 0x10ec0255:
 	case 0x10ec0256:
@@ -7015,6 +7016,7 @@ static int patch_alc269(struct hda_codec
 	case 0x10ec0298:
 		spec->codec_variant = ALC269_TYPE_ALC298;
 		break;
+	case 0x10ec0235:
 	case 0x10ec0255:
 		spec->codec_variant = ALC269_TYPE_ALC255;
 		break;

[PATCH 4.14 48/91] ALSA: hda/realtek - Update ALC255 depop optimize

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Kailang Yang <kailang@realtek.com>

commit ab3b8e5159b5335c81ba2d09ee5054d4a1b5a7a6 upstream.

Add ALC255 its own depop functions for alc_init and alc_shutup.
Assign it to ALC256 usage.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/patch_realtek.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -7019,6 +7019,8 @@ static int patch_alc269(struct hda_codec
 	case 0x10ec0235:
 	case 0x10ec0255:
 		spec->codec_variant = ALC269_TYPE_ALC255;
+		spec->shutup = alc256_shutup;
+		spec->init_hook = alc256_init;
 		break;
 	case 0x10ec0236:
 	case 0x10ec0256:

[PATCH 4.14 49/91] ALSA: hda/realtek - change the location for one of two front mics

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Kailang Yang <kailang@realtek.com>

commit 65811834ba56e9ed88117cf6c09880416c9951ab upstream.

On this Lenovo ThinkCentre machine. There are two front mics,
we change the location for one of them.

Relation: f33f79f3d0e5 ("ALSA: hda/realtek - change the location for
one of two front microphones")

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
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
@@ -6436,6 +6436,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
 	SND_PCI_QUIRK(0x17aa, 0x30e2, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
 	SND_PCI_QUIRK(0x17aa, 0x310c, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
+	SND_PCI_QUIRK(0x17aa, 0x312f, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
 	SND_PCI_QUIRK(0x17aa, 0x3138, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
 	SND_PCI_QUIRK(0x17aa, 0x313c, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
 	SND_PCI_QUIRK(0x17aa, 0x3112, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),

[PATCH 4.14 50/91] mtd: spi-nor: cadence-quadspi: Fix page fault kernel panic

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Thor Thayer <thor.thayer@linux.intel.com>

commit 47016b341fc3b3fd4909e058c6fa38f165b53646 upstream.

The current Cadence QSPI driver caused a kernel panic when loading
a Root Filesystem from QSPI. The problem was caused by reading more
bytes than needed because the QSPI operated on 4 bytes at a time.
<snip>
[    7.947754] spi_nor_read[1048]:from 0x037cad74, len 1 [bfe07fff]
[    7.956247] cqspi_read[910]:offset 0x58502516, buffer=bfe07fff
[    7.956247]
[    7.966046] Unable to handle kernel paging request at virtual
address bfe08002
[    7.973239] pgd = eebfc000
[    7.975931] [bfe08002] *pgd=2fffb811, *pte=00000000, *ppte=00000000
</snip>
Notice above how only 1 byte needed to be read but by reading 4 bytes
into the end of a mapped page, an unrecoverable page fault occurred.

This patch uses a temporary buffer to hold the 4 bytes read and then
copies only the bytes required into the buffer. A min() function is
used to limit the length to prevent buffer overflows.

Request testing of this patch on other platforms. This was tested
on the Intel Arria10 SoCFPGA DevKit.

Fixes: 0cf1725676a97fc8 ("mtd: spi-nor: cqspi: Fix build on arches missing readsl/writesl")
Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mtd/spi-nor/cadence-quadspi.c |   19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

--- a/drivers/mtd/spi-nor/cadence-quadspi.c
+++ b/drivers/mtd/spi-nor/cadence-quadspi.c
@@ -495,7 +495,9 @@ static int cqspi_indirect_read_execute(s
 	void __iomem *reg_base = cqspi->iobase;
 	void __iomem *ahb_base = cqspi->ahb_base;
 	unsigned int remaining = n_rx;
+	unsigned int mod_bytes = n_rx % 4;
 	unsigned int bytes_to_read = 0;
+	u8 *rxbuf_end = rxbuf + n_rx;
 	int ret = 0;
 
 	writel(remaining, reg_base + CQSPI_REG_INDIRECTRDBYTES);
@@ -523,11 +525,24 @@ static int cqspi_indirect_read_execute(s
 		}
 
 		while (bytes_to_read != 0) {
+			unsigned int word_remain = round_down(remaining, 4);
+
 			bytes_to_read *= cqspi->fifo_width;
 			bytes_to_read = bytes_to_read > remaining ?
 					remaining : bytes_to_read;
-			ioread32_rep(ahb_base, rxbuf,
-				     DIV_ROUND_UP(bytes_to_read, 4));
+			bytes_to_read = round_down(bytes_to_read, 4);
+			/* Read 4 byte word chunks then single bytes */
+			if (bytes_to_read) {
+				ioread32_rep(ahb_base, rxbuf,
+					     (bytes_to_read / 4));
+			} else if (!word_remain && mod_bytes) {
+				unsigned int temp = ioread32(ahb_base);
+
+				bytes_to_read = mod_bytes;
+				memcpy(rxbuf, &temp, min((unsigned int)
+							 (rxbuf_end - rxbuf),
+							 bytes_to_read));
+			}
 			rxbuf += bytes_to_read;
 			remaining -= bytes_to_read;
 			bytes_to_read = cqspi_get_rd_sram_level(cqspi);

[PATCH 4.14 51/91] mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Joakim Tjernlund <joakim.tjernlund@transmode.se>

commit 6510bbc88e3258631831ade49033537081950605 upstream.

Currently it is possible to read and/or write to suspend EB's.
Writing /dev/mtdX or /dev/mtdblockX from several processes may
break the flash state machine.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mtd/chips/cfi_cmdset_0001.c |   16 +++++++++++-----
 include/linux/mtd/flashchip.h       |    1 +
 2 files changed, 12 insertions(+), 5 deletions(-)

--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -831,21 +831,25 @@ static int chip_ready (struct map_info *
 		     (mode == FL_WRITING && (cfip->SuspendCmdSupport & 1))))
 			goto sleep;
 
+		/* Do not allow suspend iff read/write to EB address */
+		if ((adr & chip->in_progress_block_mask) ==
+		    chip->in_progress_block_addr)
+			goto sleep;
 
 		/* Erase suspend */
-		map_write(map, CMD(0xB0), adr);
+		map_write(map, CMD(0xB0), chip->in_progress_block_addr);
 
 		/* If the flash has finished erasing, then 'erase suspend'
 		 * appears to make some (28F320) flash devices switch to
 		 * 'read' mode.  Make sure that we switch to 'read status'
 		 * mode so we get the right data. --rmk
 		 */
-		map_write(map, CMD(0x70), adr);
+		map_write(map, CMD(0x70), chip->in_progress_block_addr);
 		chip->oldstate = FL_ERASING;
 		chip->state = FL_ERASE_SUSPENDING;
 		chip->erase_suspended = 1;
 		for (;;) {
-			status = map_read(map, adr);
+			status = map_read(map, chip->in_progress_block_addr);
 			if (map_word_andequal(map, status, status_OK, status_OK))
 			        break;
 
@@ -1041,8 +1045,8 @@ static void put_chip(struct map_info *ma
 		   sending the 0x70 (Read Status) command to an erasing
 		   chip and expecting it to be ignored, that's what we
 		   do. */
-		map_write(map, CMD(0xd0), adr);
-		map_write(map, CMD(0x70), adr);
+		map_write(map, CMD(0xd0), chip->in_progress_block_addr);
+		map_write(map, CMD(0x70), chip->in_progress_block_addr);
 		chip->oldstate = FL_READY;
 		chip->state = FL_ERASING;
 		break;
@@ -1933,6 +1937,8 @@ static int __xipram do_erase_oneblock(st
 	map_write(map, CMD(0xD0), adr);
 	chip->state = FL_ERASING;
 	chip->erase_suspended = 0;
+	chip->in_progress_block_addr = adr;
+	chip->in_progress_block_mask = ~(len - 1);
 
 	ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
 				   adr, len,
--- a/include/linux/mtd/flashchip.h
+++ b/include/linux/mtd/flashchip.h
@@ -85,6 +85,7 @@ struct flchip {
 	unsigned int write_suspended:1;
 	unsigned int erase_suspended:1;
 	unsigned long in_progress_block_addr;
+	unsigned long in_progress_block_mask;
 
 	struct mutex mutex;
 	wait_queue_head_t wq; /* Wait on here when we're waiting for the chip

[PATCH 4.14 52/91] mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Joakim Tjernlund <joakim.tjernlund@transmode.se>

commit 46a16a2283f9e678a4e26829175e0c37a5191860 upstream.

Some Micron chips does not work well wrt Erase suspend for
boot blocks. This avoids the issue by not allowing Erase suspend
for the boot blocks for the 28F00AP30(1GBit) chip.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mtd/chips/cfi_cmdset_0001.c |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -45,6 +45,7 @@
 #define I82802AB	0x00ad
 #define I82802AC	0x00ac
 #define PF38F4476	0x881c
+#define M28F00AP30	0x8963
 /* STMicroelectronics chips */
 #define M50LPW080       0x002F
 #define M50FLW080A	0x0080
@@ -375,6 +376,17 @@ static void cfi_fixup_major_minor(struct
 		extp->MinorVersion = '1';
 }
 
+static int cfi_is_micron_28F00AP30(struct cfi_private *cfi, struct flchip *chip)
+{
+	/*
+	 * Micron(was Numonyx) 1Gbit bottom boot are buggy w.r.t
+	 * Erase Supend for their small Erase Blocks(0x8000)
+	 */
+	if (cfi->mfr == CFI_MFR_INTEL && cfi->id == M28F00AP30)
+		return 1;
+	return 0;
+}
+
 static inline struct cfi_pri_intelext *
 read_pri_intelext(struct map_info *map, __u16 adr)
 {
@@ -836,6 +848,11 @@ static int chip_ready (struct map_info *
 		    chip->in_progress_block_addr)
 			goto sleep;
 
+		/* do not suspend small EBs, buggy Micron Chips */
+		if (cfi_is_micron_28F00AP30(cfi, chip) &&
+		    (chip->in_progress_block_mask == ~(0x8000-1)))
+			goto sleep;
+
 		/* Erase suspend */
 		map_write(map, CMD(0xB0), chip->in_progress_block_addr);
 

[PATCH 4.14 53/91] mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Joakim Tjernlund <joakim.tjernlund@infinera.com>

commit 7b70eb14392a7cf505f9b358d06c33b5af73d1e7 upstream.

Currently it is possible to read and/or write to suspend EB's.
Writing /dev/mtdX or /dev/mtdblockX from several processes may
break the flash state machine.

Taken from cfi_cmdset_0001 driver.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mtd/chips/cfi_cmdset_0002.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -816,9 +816,10 @@ static int get_chip(struct map_info *map
 		    (mode == FL_WRITING && (cfip->EraseSuspend & 0x2))))
 			goto sleep;
 
-		/* We could check to see if we're trying to access the sector
-		 * that is currently being erased. However, no user will try
-		 * anything like that so we just wait for the timeout. */
+		/* Do not allow suspend iff read/write to EB address */
+		if ((adr & chip->in_progress_block_mask) ==
+		    chip->in_progress_block_addr)
+			goto sleep;
 
 		/* Erase suspend */
 		/* It's harmless to issue the Erase-Suspend and Erase-Resume
@@ -2267,6 +2268,7 @@ static int __xipram do_erase_chip(struct
 	chip->state = FL_ERASING;
 	chip->erase_suspended = 0;
 	chip->in_progress_block_addr = adr;
+	chip->in_progress_block_mask = ~(map->size - 1);
 
 	INVALIDATE_CACHE_UDELAY(map, chip,
 				adr, map->size,
@@ -2356,6 +2358,7 @@ static int __xipram do_erase_oneblock(st
 	chip->state = FL_ERASING;
 	chip->erase_suspended = 0;
 	chip->in_progress_block_addr = adr;
+	chip->in_progress_block_mask = ~(len - 1);
 
 	INVALIDATE_CACHE_UDELAY(map, chip,
 				adr, len,

[PATCH 4.14 54/91] mtd: rawnand: tango: Fix struct clk memory leak

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>

commit 007b4e8b705a4eff184d567c5a8b496622f9e116 upstream.

Use devm_clk_get() to let Linux manage struct clk memory.

Fixes: 6956e2385a16 ("add tango NAND flash controller support")
Cc: stable@vger.kernel.org
Reported-by: Xidong Wang <wangxidong_97@163.com>
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mtd/nand/tango_nand.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mtd/nand/tango_nand.c
+++ b/drivers/mtd/nand/tango_nand.c
@@ -654,7 +654,7 @@ static int tango_nand_probe(struct platf
 
 	writel_relaxed(MODE_RAW, nfc->pbus_base + PBUS_PAD_MODE);
 
-	clk = clk_get(&pdev->dev, NULL);
+	clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 

[PATCH 4.14 55/91] kobject: dont use WARN for registration failures

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Dmitry Vyukov <dvyukov@google.com>

commit 3e14c6abbfb5c94506edda9d8e2c145d79375798 upstream.

This WARNING proved to be noisy. The function still returns an error
and callers should handle it. That's how most of kernel code works.
Downgrade the WARNING to pr_err() and leave WARNINGs for kernel bugs.

Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: syzbot+209c0f67f99fec8eb14b@syzkaller.appspotmail.com
Reported-by: syzbot+7fb6d9525a4528104e05@syzkaller.appspotmail.com
Reported-by: syzbot+2e63711063e2d8f9ea27@syzkaller.appspotmail.com
Reported-by: syzbot+de73361ee4971b6e6f75@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 lib/kobject.c |   12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -234,14 +234,12 @@ static int kobject_add_internal(struct k
 
 		/* be noisy on error issues */
 		if (error == -EEXIST)
-			WARN(1, "%s failed for %s with "
-			     "-EEXIST, don't try to register things with "
-			     "the same name in the same directory.\n",
-			     __func__, kobject_name(kobj));
+			pr_err("%s failed for %s with -EEXIST, don't try to register things with the same name in the same directory.\n",
+			       __func__, kobject_name(kobj));
 		else
-			WARN(1, "%s failed for %s (error: %d parent: %s)\n",
-			     __func__, kobject_name(kobj), error,
-			     parent ? kobject_name(parent) : "'none'");
+			pr_err("%s failed for %s (error: %d parent: %s)\n",
+			       __func__, kobject_name(kobj), error,
+			       parent ? kobject_name(parent) : "'none'");
 	} else
 		kobj->state_in_sysfs = 1;
 

[PATCH 4.14 56/91] scsi: sd: Defer spinning up drive while SANITIZE is in progress

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>

commit 505aa4b6a8834a2300971c5220c380c3271ebde3 upstream.

A drive being sanitized will return NOT READY / ASC 0x4 / ASCQ
0x1b ("LOGICAL UNIT NOT READY. SANITIZE IN PROGRESS").

Prevent spinning up the drive until this condition clears.

[mkp: tweaked commit message]

Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/sd.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -2132,6 +2132,8 @@ sd_spinup_disk(struct scsi_disk *sdkp)
 				break;	/* standby */
 			if (sshdr.asc == 4 && sshdr.ascq == 0xc)
 				break;	/* unavailable */
+			if (sshdr.asc == 4 && sshdr.ascq == 0x1b)
+				break;	/* sanitize in progress */
 			/*
 			 * Issue command to spin up drive when not ready
 			 */

[PATCH 4.14 57/91] bfq-iosched: ensure to clear bic/bfqq pointers when preparing request

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Jens Axboe <axboe@kernel.dk>

commit 72961c4e6082be79825265d9193272b8a1634dec upstream.

Even if we don't have an IO context attached to a request, we still
need to clear the priv[0..1] pointers, as they could be pointing
to previously used bic/bfqq structures. If we don't do so, we'll
either corrupt memory on dispatching a request, or cause an
imbalance in counters.

Inspired by a fix from Kees.

Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reported-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Fixes: aee69d78dec0 ("block, bfq: introduce the BFQ-v0 I/O scheduler as an extra scheduler")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 block/bfq-iosched.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -4447,8 +4447,16 @@ static void bfq_prepare_request(struct r
 	bool new_queue = false;
 	bool bfqq_already_existing = false, split = false;
 
-	if (!rq->elv.icq)
+	/*
+	 * Even if we don't have an icq attached, we should still clear
+	 * the scheduler pointers, as they might point to previously
+	 * allocated bic/bfqq structs.
+	 */
+	if (!rq->elv.icq) {
+		rq->elv.priv[0] = rq->elv.priv[1] = NULL;
 		return;
+	}
+
 	bic = icq_to_bic(rq->elv.icq);
 
 	spin_lock_irq(&bfqd->lock);

[PATCH 4.14 58/91] vfio: ccw: process ssch with interrupts disabled

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Cornelia Huck <cohuck@redhat.com>

commit 3368e547c52b96586f0edf9657ca12b94d8e61a7 upstream.

When we call ssch, an interrupt might already be pending once we
return from the START SUBCHANNEL instruction. Therefore we need to
make sure interrupts are disabled while holding the subchannel lock
until after we're done with our processing.

Cc: stable@vger.kernel.org #v4.12+
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/s390/cio/vfio_ccw_fsm.c |   19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

--- a/drivers/s390/cio/vfio_ccw_fsm.c
+++ b/drivers/s390/cio/vfio_ccw_fsm.c
@@ -20,12 +20,12 @@ static int fsm_io_helper(struct vfio_ccw
 	int ccode;
 	__u8 lpm;
 	unsigned long flags;
+	int ret;
 
 	sch = private->sch;
 
 	spin_lock_irqsave(sch->lock, flags);
 	private->state = VFIO_CCW_STATE_BUSY;
-	spin_unlock_irqrestore(sch->lock, flags);
 
 	orb = cp_get_orb(&private->cp, (u32)(addr_t)sch, sch->lpm);
 
@@ -38,10 +38,12 @@ static int fsm_io_helper(struct vfio_ccw
 		 * Initialize device status information
 		 */
 		sch->schib.scsw.cmd.actl |= SCSW_ACTL_START_PEND;
-		return 0;
+		ret = 0;
+		break;
 	case 1:		/* Status pending */
 	case 2:		/* Busy */
-		return -EBUSY;
+		ret = -EBUSY;
+		break;
 	case 3:		/* Device/path not operational */
 	{
 		lpm = orb->cmd.lpm;
@@ -51,13 +53,16 @@ static int fsm_io_helper(struct vfio_ccw
 			sch->lpm = 0;
 
 		if (cio_update_schib(sch))
-			return -ENODEV;
-
-		return sch->lpm ? -EACCES : -ENODEV;
+			ret = -ENODEV;
+		else
+			ret = sch->lpm ? -EACCES : -ENODEV;
+		break;
 	}
 	default:
-		return ccode;
+		ret = ccode;
 	}
+	spin_unlock_irqrestore(sch->lock, flags);
+	return ret;
 }
 
 static void fsm_notoper(struct vfio_ccw_private *private,

[PATCH 4.14 59/91] ANDROID: binder: prevent transactions into own process.

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Martijn Coenen <maco@android.com>

commit 7aa135fcf26377f92dc0680a57566b4c7f3e281b upstream.

This can't happen with normal nodes (because you can't get a ref
to a node you own), but it could happen with the context manager;
to make the behavior consistent with regular nodes, reject
transactions into the context manager by the process owning it.

Reported-by: syzbot+09e05aba06723a94d43d@syzkaller.appspotmail.com
Signed-off-by: Martijn Coenen <maco@android.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/android/binder.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2785,6 +2785,14 @@ static void binder_transaction(struct bi
 			else
 				return_error = BR_DEAD_REPLY;
 			mutex_unlock(&context->context_mgr_node_lock);
+			if (target_node && target_proc == proc) {
+				binder_user_error("%d:%d got transaction to context manager from process owning it\n",
+						  proc->pid, thread->pid);
+				return_error = BR_FAILED_REPLY;
+				return_error_param = -EINVAL;
+				return_error_line = __LINE__;
+				goto err_invalid_target_handle;
+			}
 		}
 		if (!target_node) {
 			/*

[PATCH 4.14 60/91] PCI: aardvark: Fix logic in advk_pcie_{rd,wr}_conf()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Victor Gu <xigu@marvell.com>

commit 660661afcd40ed7f515ef3369721ed58e80c0fc5 upstream.

The PCI configuration space read/write functions were special casing
the situation where PCI_SLOT(devfn) != 0, and returned
PCIBIOS_DEVICE_NOT_FOUND in this case.

However, while this is what is intended for the root bus, it is not
intended for the child busses, as it prevents discovering devices with
PCI_SLOT(x) != 0. Therefore, we return PCIBIOS_DEVICE_NOT_FOUND only
if we're on the root bus.

Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Victor Gu <xigu@marvell.com>
Reviewed-by: Wilson Ding <dingwei@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
[Thomas: tweak commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pci/host/pci-aardvark.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -440,7 +440,7 @@ static int advk_pcie_rd_conf(struct pci_
 	u32 reg;
 	int ret;
 
-	if (PCI_SLOT(devfn) != 0) {
+	if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0) {
 		*val = 0xffffffff;
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}
@@ -494,7 +494,7 @@ static int advk_pcie_wr_conf(struct pci_
 	int offset;
 	int ret;
 
-	if (PCI_SLOT(devfn) != 0)
+	if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	if (where % size)

[PATCH 4.14 61/91] PCI: aardvark: Set PIO_ADDR_LS correctly in advk_pcie_rd_conf()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Victor Gu <xigu@marvell.com>

commit 4fa3999ee672c54a5498ce98e20fe3fdf9c1cbb4 upstream.

When setting the PIO_ADDR_LS register during a configuration read, we
were properly passing the device number, function number and register
number, but not the bus number, causing issues when reading the
configuration of PCIe devices.

Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Victor Gu <xigu@marvell.com>
Reviewed-by: Wilson Ding <dingwei@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
[Thomas: tweak commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pci/host/pci-aardvark.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -175,8 +175,6 @@
 #define PCIE_CONFIG_WR_TYPE0			0xa
 #define PCIE_CONFIG_WR_TYPE1			0xb
 
-/* PCI_BDF shifts 8bit, so we need extra 4bit shift */
-#define PCIE_BDF(dev)				(dev << 4)
 #define PCIE_CONF_BUS(bus)			(((bus) & 0xff) << 20)
 #define PCIE_CONF_DEV(dev)			(((dev) & 0x1f) << 15)
 #define PCIE_CONF_FUNC(fun)			(((fun) & 0x7)	<< 12)
@@ -459,7 +457,7 @@ static int advk_pcie_rd_conf(struct pci_
 	advk_writel(pcie, reg, PIO_CTRL);
 
 	/* Program the address registers */
-	reg = PCIE_BDF(devfn) | PCIE_CONF_REG(where);
+	reg = PCIE_CONF_ADDR(bus->number, devfn, where);
 	advk_writel(pcie, reg, PIO_ADDR_LS);
 	advk_writel(pcie, 0, PIO_ADDR_MS);
 

[PATCH 4.14 62/91] PCI: aardvark: Use ISR1 instead of ISR0 interrupt in legacy irq mode

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Victor Gu <xigu@marvell.com>

commit 3430f924a62905891c8fa9a3b97ea52007795bc3 upstream.

The Aardvark has two interrupts sets:

 - first set is bit[23:16] of PCIe ISR 0 register(RD0074840h)

 - second set is bit[11:8] of PCIe ISR 1 register(RD0074848h)

Only one set should be used, while another set should be masked.

The second set, ISR1, is more advanced, the Legacy INT_X status bit is
asserted once Assert_INTX message is received, and de-asserted after
Deassert_INTX message is received which matches what the driver is
currently doing in the ->irq_mask() and ->irq_unmask() functions.

The ISR0 requires additional work to deassert the interrupt, which the
driver does not currently implement, therefore it needs fixing.

Update the driver to use ISR1 register set, fixing current
implementation.

Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196339
Signed-off-by: Victor Gu <xigu@marvell.com>
[Thomas: tweak commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[lorenzo.pieralisi@arm.com: updated the commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Evan Wang <xswang@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pci/host/pci-aardvark.c |   43 +++++++++++++++++++++++-----------------
 1 file changed, 25 insertions(+), 18 deletions(-)

--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -103,7 +103,8 @@
 #define PCIE_ISR1_MASK_REG			(CONTROL_BASE_ADDR + 0x4C)
 #define     PCIE_ISR1_POWER_STATE_CHANGE	BIT(4)
 #define     PCIE_ISR1_FLUSH			BIT(5)
-#define     PCIE_ISR1_ALL_MASK			GENMASK(5, 4)
+#define     PCIE_ISR1_INTX_ASSERT(val)		BIT(8 + (val))
+#define     PCIE_ISR1_ALL_MASK			GENMASK(11, 4)
 #define PCIE_MSI_ADDR_LOW_REG			(CONTROL_BASE_ADDR + 0x50)
 #define PCIE_MSI_ADDR_HIGH_REG			(CONTROL_BASE_ADDR + 0x54)
 #define PCIE_MSI_STATUS_REG			(CONTROL_BASE_ADDR + 0x58)
@@ -610,9 +611,9 @@ static void advk_pcie_irq_mask(struct ir
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 	u32 mask;
 
-	mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);
-	mask |= PCIE_ISR0_INTX_ASSERT(hwirq);
-	advk_writel(pcie, mask, PCIE_ISR0_MASK_REG);
+	mask = advk_readl(pcie, PCIE_ISR1_MASK_REG);
+	mask |= PCIE_ISR1_INTX_ASSERT(hwirq);
+	advk_writel(pcie, mask, PCIE_ISR1_MASK_REG);
 }
 
 static void advk_pcie_irq_unmask(struct irq_data *d)
@@ -621,9 +622,9 @@ static void advk_pcie_irq_unmask(struct
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 	u32 mask;
 
-	mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);
-	mask &= ~PCIE_ISR0_INTX_ASSERT(hwirq);
-	advk_writel(pcie, mask, PCIE_ISR0_MASK_REG);
+	mask = advk_readl(pcie, PCIE_ISR1_MASK_REG);
+	mask &= ~PCIE_ISR1_INTX_ASSERT(hwirq);
+	advk_writel(pcie, mask, PCIE_ISR1_MASK_REG);
 }
 
 static int advk_pcie_irq_map(struct irq_domain *h,
@@ -766,29 +767,35 @@ static void advk_pcie_handle_msi(struct
 
 static void advk_pcie_handle_int(struct advk_pcie *pcie)
 {
-	u32 val, mask, status;
+	u32 isr0_val, isr0_mask, isr0_status;
+	u32 isr1_val, isr1_mask, isr1_status;
 	int i, virq;
 
-	val = advk_readl(pcie, PCIE_ISR0_REG);
-	mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);
-	status = val & ((~mask) & PCIE_ISR0_ALL_MASK);
-
-	if (!status) {
-		advk_writel(pcie, val, PCIE_ISR0_REG);
+	isr0_val = advk_readl(pcie, PCIE_ISR0_REG);
+	isr0_mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);
+	isr0_status = isr0_val & ((~isr0_mask) & PCIE_ISR0_ALL_MASK);
+
+	isr1_val = advk_readl(pcie, PCIE_ISR1_REG);
+	isr1_mask = advk_readl(pcie, PCIE_ISR1_MASK_REG);
+	isr1_status = isr1_val & ((~isr1_mask) & PCIE_ISR1_ALL_MASK);
+
+	if (!isr0_status && !isr1_status) {
+		advk_writel(pcie, isr0_val, PCIE_ISR0_REG);
+		advk_writel(pcie, isr1_val, PCIE_ISR1_REG);
 		return;
 	}
 
 	/* Process MSI interrupts */
-	if (status & PCIE_ISR0_MSI_INT_PENDING)
+	if (isr0_status & PCIE_ISR0_MSI_INT_PENDING)
 		advk_pcie_handle_msi(pcie);
 
 	/* Process legacy interrupts */
 	for (i = 0; i < PCI_NUM_INTX; i++) {
-		if (!(status & PCIE_ISR0_INTX_ASSERT(i)))
+		if (!(isr1_status & PCIE_ISR1_INTX_ASSERT(i)))
 			continue;
 
-		advk_writel(pcie, PCIE_ISR0_INTX_ASSERT(i),
-			    PCIE_ISR0_REG);
+		advk_writel(pcie, PCIE_ISR1_INTX_ASSERT(i),
+			    PCIE_ISR1_REG);
 
 		virq = irq_find_mapping(pcie->irq_domain, i);
 		generic_handle_irq(virq);

[PATCH 4.14 63/91] PCI: aardvark: Fix PCIe Max Read Request Size setting

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Evan Wang <xswang@marvell.com>

commit fc31c4e347c9dad50544d01d5ee98b22c7df88bb upstream.

There is an obvious typo issue in the definition of the PCIe maximum
read request size: a bit shift is directly used as a value, while it
should be used to shift the correct value.

Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Evan Wang <xswang@marvell.com>
Reviewed-by: Victor Gu <xigu@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
[Thomas: tweak commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pci/host/pci-aardvark.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -32,6 +32,7 @@
 #define     PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SZ_SHIFT	5
 #define     PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE		(0 << 11)
 #define     PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT	12
+#define     PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SZ		0x2
 #define PCIE_CORE_LINK_CTRL_STAT_REG				0xd0
 #define     PCIE_CORE_LINK_L0S_ENTRY				BIT(0)
 #define     PCIE_CORE_LINK_TRAINING				BIT(5)
@@ -298,7 +299,8 @@ static void advk_pcie_setup_hw(struct ad
 	reg = PCIE_CORE_DEV_CTRL_STATS_RELAX_ORDER_DISABLE |
 		(7 << PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SZ_SHIFT) |
 		PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE |
-		PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT;
+		(PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SZ <<
+		 PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT);
 	advk_writel(pcie, reg, PCIE_CORE_DEV_CTRL_STATS_REG);
 
 	/* Program PCIe Control 2 to disable strict ordering */

[PATCH 4.14 64/91] ARM: amba: Make driver_override output consistent with other buses

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Geert Uytterhoeven <geert+renesas@glider.be>

commit 5f53624662eaac89598641cee6cd54fc192572d9 upstream.

For AMBA devices with unconfigured driver override, the
"driver_override" sysfs virtual file is empty, while it contains
"(null)" for platform and PCI devices.

Make AMBA consistent with other buses by dropping the test for a NULL
pointer.

Note that contrary to popular belief, sprintf() handles NULL pointers
fine; they are printed as "(null)".

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/amba/bus.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -70,9 +70,6 @@ static ssize_t driver_override_show(stru
 {
 	struct amba_device *dev = to_amba_device(_dev);
 
-	if (!dev->driver_override)
-		return 0;
-
 	return sprintf(buf, "%s\n", dev->driver_override);
 }
 

[PATCH 4.14 65/91] ARM: amba: Fix race condition with driver_override

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Geert Uytterhoeven <geert+renesas@glider.be>

commit 6a7228d90d42bcacfe38786756ba62762b91c20a upstream.

The driver_override implementation is susceptible to a race condition
when different threads are reading vs storing a different driver
override.  Add locking to avoid this race condition.

Cfr. commits 6265539776a0810b ("driver core: platform: fix race
condition with driver_override") and 9561475db680f714 ("PCI: Fix race
condition with driver_override").

Fixes: 3cf385713460eb2b ("ARM: 8256/1: driver coamba: add device binding path 'driver_override'")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Todd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/amba/bus.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -69,8 +69,12 @@ static ssize_t driver_override_show(stru
 				    struct device_attribute *attr, char *buf)
 {
 	struct amba_device *dev = to_amba_device(_dev);
+	ssize_t len;
 
-	return sprintf(buf, "%s\n", dev->driver_override);
+	device_lock(_dev);
+	len = sprintf(buf, "%s\n", dev->driver_override);
+	device_unlock(_dev);
+	return len;
 }
 
 static ssize_t driver_override_store(struct device *_dev,
@@ -78,7 +82,7 @@ static ssize_t driver_override_store(str
 				     const char *buf, size_t count)
 {
 	struct amba_device *dev = to_amba_device(_dev);
-	char *driver_override, *old = dev->driver_override, *cp;
+	char *driver_override, *old, *cp;
 
 	if (count > PATH_MAX)
 		return -EINVAL;
@@ -91,12 +95,15 @@ static ssize_t driver_override_store(str
 	if (cp)
 		*cp = '\0';
 
+	device_lock(_dev);
+	old = dev->driver_override;
 	if (strlen(driver_override)) {
 		dev->driver_override = driver_override;
 	} else {
 	       kfree(driver_override);
 	       dev->driver_override = NULL;
 	}
+	device_unlock(_dev);
 
 	kfree(old);
 

[PATCH 4.14 66/91] ARM: amba: Dont read past the end of sysfs "driver_override" buffer

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Geert Uytterhoeven <geert+renesas@glider.be>

commit d2ffed5185df9d8d9ccd150e4340e3b6f96a8381 upstream.

When printing the driver_override parameter when it is 4095 and 4094
bytes long, the printing code would access invalid memory because we
need count + 1 bytes for printing.

Cfr. commits 4efe874aace57dba ("PCI: Don't read past the end of sysfs
"driver_override" buffer") and bf563b01c2895a4b ("driver core: platform:
Don't read past the end of "driver_override" buffer").

Fixes: 3cf385713460eb2b ("ARM: 8256/1: driver coamba: add device binding path 'driver_override'")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Todd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/amba/bus.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -84,7 +84,8 @@ static ssize_t driver_override_store(str
 	struct amba_device *dev = to_amba_device(_dev);
 	char *driver_override, *old, *cp;
 
-	if (count > PATH_MAX)
+	/* We need to keep extra room for a newline */
+	if (count >= (PAGE_SIZE - 1))
 		return -EINVAL;
 
 	driver_override = kstrndup(buf, count, GFP_KERNEL);

[PATCH 4.14 67/91] ARM: socfpga_defconfig: Remove QSPI Sector 4K size force

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Thor Thayer <thor.thayer@linux.intel.com>

commit 6e8fe39989720b87439fee7817a5ca362b16d931 upstream.

Remove QSPI Sector 4K size force which is causing QSPI boot
problems with the JFFS2 root filesystem.

Fixes the following error:
     "Magic bitmask 0x1985 not found at ..."

Cc: stable@vger.kernel.org
Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arm/configs/socfpga_defconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm/configs/socfpga_defconfig
+++ b/arch/arm/configs/socfpga_defconfig
@@ -57,6 +57,7 @@ CONFIG_MTD_M25P80=y
 CONFIG_MTD_NAND=y
 CONFIG_MTD_NAND_DENALI_DT=y
 CONFIG_MTD_SPI_NOR=y
+# CONFIG_MTD_SPI_NOR_USE_4K_SECTORS is not set
 CONFIG_SPI_CADENCE_QUADSPI=y
 CONFIG_OF_OVERLAY=y
 CONFIG_OF_CONFIGFS=y

[PATCH 4.14 68/91] KVM: arm/arm64: Close VMID generation race

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Marc Zyngier <marc.zyngier@arm.com>

commit f0cf47d939d0b4b4f660c5aaa4276fa3488f3391 upstream.

Before entering the guest, we check whether our VMID is still
part of the current generation. In order to avoid taking a lock,
we start with checking that the generation is still current, and
only if not current do we take the lock, recheck, and update the
generation and VMID.

This leaves open a small race: A vcpu can bump up the global
generation number as well as the VM's, but has not updated
the VMID itself yet.

At that point another vcpu from the same VM comes in, checks
the generation (and finds it not needing anything), and jumps
into the guest. At this point, we end-up with two vcpus belonging
to the same VM running with two different VMIDs. Eventually, the
VMID used by the second vcpu will get reassigned, and things will
really go wrong...

A simple solution would be to drop this initial check, and always take
the lock. This is likely to cause performance issues. A middle ground
is to convert the spinlock to a rwlock, and only take the read lock
on the fast path. If the check fails at that point, drop it and
acquire the write lock, rechecking the condition.

This ensures that the above scenario doesn't occur.

Cc: stable@vger.kernel.org
Reported-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 virt/kvm/arm/arm.c |   15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -61,7 +61,7 @@ static DEFINE_PER_CPU(struct kvm_vcpu *,
 static atomic64_t kvm_vmid_gen = ATOMIC64_INIT(1);
 static u32 kvm_next_vmid;
 static unsigned int kvm_vmid_bits __read_mostly;
-static DEFINE_SPINLOCK(kvm_vmid_lock);
+static DEFINE_RWLOCK(kvm_vmid_lock);
 
 static bool vgic_present;
 
@@ -462,11 +462,16 @@ static void update_vttbr(struct kvm *kvm
 {
 	phys_addr_t pgd_phys;
 	u64 vmid;
+	bool new_gen;
 
-	if (!need_new_vmid_gen(kvm))
+	read_lock(&kvm_vmid_lock);
+	new_gen = need_new_vmid_gen(kvm);
+	read_unlock(&kvm_vmid_lock);
+
+	if (!new_gen)
 		return;
 
-	spin_lock(&kvm_vmid_lock);
+	write_lock(&kvm_vmid_lock);
 
 	/*
 	 * We need to re-check the vmid_gen here to ensure that if another vcpu
@@ -474,7 +479,7 @@ static void update_vttbr(struct kvm *kvm
 	 * use the same vmid.
 	 */
 	if (!need_new_vmid_gen(kvm)) {
-		spin_unlock(&kvm_vmid_lock);
+		write_unlock(&kvm_vmid_lock);
 		return;
 	}
 
@@ -508,7 +513,7 @@ static void update_vttbr(struct kvm *kvm
 	vmid = ((u64)(kvm->arch.vmid) << VTTBR_VMID_SHIFT) & VTTBR_VMID_MASK(kvm_vmid_bits);
 	kvm->arch.vttbr = pgd_phys | vmid;
 
-	spin_unlock(&kvm_vmid_lock);
+	write_unlock(&kvm_vmid_lock);
 }
 
 static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu)

[PATCH 4.14 69/91] powerpc/mm: Flush cache on memory hot(un)plug

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Balbir Singh <bsingharora@gmail.com>

commit fb5924fddf9ee31db04da7ad4e8c3434a387101b upstream.

This patch adds support for flushing potentially dirty cache lines
when memory is hot-plugged/hot-un-plugged. The support is currently
limited to 64 bit systems.

The bug was exposed when mappings for a device were actually
hot-unplugged and plugged in back later. A similar issue was observed
during the development of memtrace, but memtrace does it's own
flushing of region via a custom routine.

These patches do a flush both on hotplug/unplug to clear any stale
data in the cache w.r.t mappings, there is a small race window where a
clean cache line may be created again just prior to tearing down the
mapping.

The patches were tested by disabling the flush routines in memtrace
and doing I/O on the trace file. The system immediately
checkstops (quite reliablly if prior to the hot-unplug of the memtrace
region, we memset the regions we are about to hot unplug). After these
patches no custom flushing is needed in the memtrace code.

Fixes: 9d5171a8f248 ("powerpc/powernv: Enable removal of memory for in memory tracing")
Cc: stable@vger.kernel.org # v4.14+
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Acked-by: Reza Arbab <arbab@linux.ibm.com>
Reviewed-by: Rashmica Gupta <rashmica.g@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/powerpc/mm/mem.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -143,6 +143,7 @@ int arch_add_memory(int nid, u64 start,
 			start, start + size, rc);
 		return -EFAULT;
 	}
+	flush_inval_dcache_range(start, start + size);
 
 	return __add_pages(nid, start_pfn, nr_pages, want_memblock);
 }
@@ -171,6 +172,7 @@ int arch_remove_memory(u64 start, u64 si
 
 	/* Remove htab bolted mappings for this section of memory */
 	start = (unsigned long)__va(start);
+	flush_inval_dcache_range(start, start + size);
 	ret = remove_section_mapping(start, start + size);
 
 	/* Ensure all vmalloc mappings are flushed in case they also

[PATCH 4.14 70/91] powerpc/powernv/npu: Do a PID GPU TLB flush when invalidating a large address range

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Alistair Popple <alistair@popple.id.au>

commit d0cf9b561ca97d5245bb9e0c4774b7fadd897d67 upstream.

The NPU has a limited number of address translation shootdown (ATSD)
registers and the GPU has limited bandwidth to process ATSDs. This can
result in contention of ATSD registers leading to soft lockups on some
threads, particularly when invalidating a large address range in
pnv_npu2_mn_invalidate_range().

At some threshold it becomes more efficient to flush the entire GPU
TLB for the given MM context (PID) than individually flushing each
address in the range. This patch will result in ranges greater than
2MB being converted from 32+ ATSDs into a single ATSD which will flush
the TLB for the given PID on each GPU.

Fixes: 1ab66d1fbada ("powerpc/powernv: Introduce address translation services for Nvlink2")
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Tested-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/powerpc/platforms/powernv/npu-dma.c |   23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

--- a/arch/powerpc/platforms/powernv/npu-dma.c
+++ b/arch/powerpc/platforms/powernv/npu-dma.c
@@ -34,6 +34,13 @@
 #define npu_to_phb(x) container_of(x, struct pnv_phb, npu)
 
 /*
+ * When an address shootdown range exceeds this threshold we invalidate the
+ * entire TLB on the GPU for the given PID rather than each specific address in
+ * the range.
+ */
+#define ATSD_THRESHOLD (2*1024*1024)
+
+/*
  * Other types of TCE cache invalidation are not functional in the
  * hardware.
  */
@@ -621,11 +628,19 @@ static void pnv_npu2_mn_invalidate_range
 	struct npu_context *npu_context = mn_to_npu_context(mn);
 	unsigned long address;
 
-	for (address = start; address < end; address += PAGE_SIZE)
-		mmio_invalidate(npu_context, 1, address, false);
+	if (end - start > ATSD_THRESHOLD) {
+		/*
+		 * Just invalidate the entire PID if the address range is too
+		 * large.
+		 */
+		mmio_invalidate(npu_context, 0, 0, true);
+	} else {
+		for (address = start; address < end; address += PAGE_SIZE)
+			mmio_invalidate(npu_context, 1, address, false);
 
-	/* Do the flush only on the final addess == end */
-	mmio_invalidate(npu_context, 1, address, true);
+		/* Do the flush only on the final addess == end */
+		mmio_invalidate(npu_context, 1, address, true);
+	}
 }
 
 static const struct mmu_notifier_ops nv_nmmu_notifier_ops = {

[PATCH 4.14 71/91] crypto: drbg - set freed buffers to NULL

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Stephan Mueller <smueller@chronox.de>

commit eea0d3ea7546961f69f55b26714ac8fd71c7c020 upstream.

During freeing of the internal buffers used by the DRBG, set the pointer
to NULL. It is possible that the context with the freed buffers is
reused. In case of an error during initialization where the pointers
do not yet point to allocated memory, the NULL value prevents a double
free.

Cc: stable@vger.kernel.org
Fixes: 3cfc3b9721123 ("crypto: drbg - use aligned buffers")
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Reported-by: syzbot+75397ee3df5c70164154@syzkaller.appspotmail.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 crypto/drbg.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1134,8 +1134,10 @@ static inline void drbg_dealloc_state(st
 	if (!drbg)
 		return;
 	kzfree(drbg->Vbuf);
+	drbg->Vbuf = NULL;
 	drbg->V = NULL;
 	kzfree(drbg->Cbuf);
+	drbg->Cbuf = NULL;
 	drbg->C = NULL;
 	kzfree(drbg->scratchpadbuf);
 	drbg->scratchpadbuf = NULL;

[PATCH 4.14 72/91] ASoC: fsl_esai: Fix divisor calculation failure at lower ratio

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Nicolin Chen <nicoleotsuka@gmail.com>

commit c656941df9bc80f7ec65b92ca73c42f8b0b62628 upstream.

When the desired ratio is less than 256, the savesub (tolerance)
in the calculation would become 0. This will then fail the loop-
search immediately without reporting any errors.

But if the ratio is smaller enough, there is no need to calculate
the tolerance because PM divisor alone is enough to get the ratio.

So a simple fix could be just to set PM directly instead of going
into the loop-search.

Reported-by: Marek Vasut <marex@denx.de>
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Tested-by: Marek Vasut <marex@denx.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/soc/fsl/fsl_esai.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -144,6 +144,13 @@ static int fsl_esai_divisor_cal(struct s
 
 	psr = ratio <= 256 * maxfp ? ESAI_xCCR_xPSR_BYPASS : ESAI_xCCR_xPSR_DIV8;
 
+	/* Do not loop-search if PM (1 ~ 256) alone can serve the ratio */
+	if (ratio <= 256) {
+		pm = ratio;
+		fp = 1;
+		goto out;
+	}
+
 	/* Set the max fluctuation -- 0.1% of the max devisor */
 	savesub = (psr ? 1 : 8)  * 256 * maxfp / 1000;
 

[PATCH 4.14 73/91] libceph: un-backoff on tick when we have a authenticated session

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Ilya Dryomov <idryomov@gmail.com>

commit facb9f6eba3df4e8027301cc0e514dc582a1b366 upstream.

This means that if we do some backoff, then authenticate, and are
healthy for an extended period of time, a subsequent failure won't
leave us starting our hunting sequence with a large backoff.

Mirrors ceph.git commit d466bc6e66abba9b464b0b69687cf45c9dccf383.

Cc: stable@vger.kernel.org # 4.7+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ceph/mon_client.c |   13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -209,6 +209,14 @@ static void reopen_session(struct ceph_m
 	__open_session(monc);
 }
 
+static void un_backoff(struct ceph_mon_client *monc)
+{
+	monc->hunt_mult /= 2; /* reduce by 50% */
+	if (monc->hunt_mult < 1)
+		monc->hunt_mult = 1;
+	dout("%s hunt_mult now %d\n", __func__, monc->hunt_mult);
+}
+
 /*
  * Reschedule delayed work timer.
  */
@@ -963,6 +971,7 @@ static void delayed_work(struct work_str
 		if (!monc->hunting) {
 			ceph_con_keepalive(&monc->con);
 			__validate_auth(monc);
+			un_backoff(monc);
 		}
 
 		if (is_auth &&
@@ -1123,9 +1132,7 @@ static void finish_hunting(struct ceph_m
 		dout("%s found mon%d\n", __func__, monc->cur_mon);
 		monc->hunting = false;
 		monc->had_a_connection = true;
-		monc->hunt_mult /= 2; /* reduce by 50% */
-		if (monc->hunt_mult < 1)
-			monc->hunt_mult = 1;
+		un_backoff(monc);
 	}
 }
 

[PATCH 4.14 74/91] libceph: reschedule a tick in finish_hunting()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Ilya Dryomov <idryomov@gmail.com>

commit 7b4c443d139f1d2b5570da475f7a9cbcef86740c upstream.

If we go without an established session for a while, backoff delay will
climb to 30 seconds.  The keepalive timeout is also 30 seconds, so it's
pretty easily hit after a prolonged hunting for a monitor: we don't get
a chance to send out a keepalive in time, which means we never get back
a keepalive ack in time, cutting an established session and attempting
to connect to a different monitor every 30 seconds:

  [Sun Apr 1 23:37:05 2018] libceph: mon0 10.80.20.99:6789 session established
  [Sun Apr 1 23:37:36 2018] libceph: mon0 10.80.20.99:6789 session lost, hunting for new mon
  [Sun Apr 1 23:37:36 2018] libceph: mon2 10.80.20.103:6789 session established
  [Sun Apr 1 23:38:07 2018] libceph: mon2 10.80.20.103:6789 session lost, hunting for new mon
  [Sun Apr 1 23:38:07 2018] libceph: mon1 10.80.20.100:6789 session established
  [Sun Apr 1 23:38:37 2018] libceph: mon1 10.80.20.100:6789 session lost, hunting for new mon
  [Sun Apr 1 23:38:37 2018] libceph: mon2 10.80.20.103:6789 session established
  [Sun Apr 1 23:39:08 2018] libceph: mon2 10.80.20.103:6789 session lost, hunting for new mon

The regular keepalive interval is 10 seconds.  After ->hunting is
cleared in finish_hunting(), call __schedule_delayed() to ensure we
send out a keepalive after 10 seconds.

Cc: stable@vger.kernel.org # 4.7+
Link: http://tracker.ceph.com/issues/23537
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ceph/mon_client.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -1133,6 +1133,7 @@ static void finish_hunting(struct ceph_m
 		monc->hunting = false;
 		monc->had_a_connection = true;
 		un_backoff(monc);
+		__schedule_delayed(monc);
 	}
 }
 

[PATCH 4.14 75/91] libceph: validate con->state at the top of try_write()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Ilya Dryomov <idryomov@gmail.com>

commit 9c55ad1c214d9f8c4594ac2c3fa392c1c32431a7 upstream.

ceph_con_workfn() validates con->state before calling try_read() and
then try_write().  However, try_read() temporarily releases con->mutex,
notably in process_message() and ceph_con_in_msg_alloc(), opening the
window for ceph_con_close() to sneak in, close the connection and
release con->sock.  When try_write() is called on the assumption that
con->state is still valid (i.e. not STANDBY or CLOSED), a NULL sock
gets passed to the networking stack:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
  IP: selinux_socket_sendmsg+0x5/0x20

Make sure con->state is valid at the top of try_write() and add an
explicit BUG_ON for this, similar to try_read().

Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/23706
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ceph/messenger.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -2530,6 +2530,11 @@ static int try_write(struct ceph_connect
 	int ret = 1;
 
 	dout("try_write start %p state %lu\n", con, con->state);
+	if (con->state != CON_STATE_PREOPEN &&
+	    con->state != CON_STATE_CONNECTING &&
+	    con->state != CON_STATE_NEGOTIATING &&
+	    con->state != CON_STATE_OPEN)
+		return 0;
 
 more:
 	dout("try_write out_kvec_bytes %d\n", con->out_kvec_bytes);
@@ -2555,6 +2560,8 @@ more:
 	}
 
 more_kvec:
+	BUG_ON(!con->sock);
+
 	/* kvec data queued? */
 	if (con->out_kvec_left) {
 		ret = write_partial_kvec(con);

[PATCH 4.14 76/91] fpga-manager: altera-ps-spi: preserve nCONFIG state

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Anatolij Gustschin <agust@denx.de>

commit 881c93c0fb73328845898344208fa0bf0d62cac6 upstream.

If the driver module is loaded when FPGA is configured, the FPGA
is reset because nconfig is pulled low (low-active gpio inited
with GPIOD_OUT_HIGH activates the signal which means setting its
value to low). Init nconfig with GPIOD_OUT_LOW to prevent this.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Cc: stable <stable@vger.kernel.org> # 4.14+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/fpga/altera-ps-spi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/fpga/altera-ps-spi.c
+++ b/drivers/fpga/altera-ps-spi.c
@@ -249,7 +249,7 @@ static int altera_ps_probe(struct spi_de
 
 	conf->data = of_id->data;
 	conf->spi = spi;
-	conf->config = devm_gpiod_get(&spi->dev, "nconfig", GPIOD_OUT_HIGH);
+	conf->config = devm_gpiod_get(&spi->dev, "nconfig", GPIOD_OUT_LOW);
 	if (IS_ERR(conf->config)) {
 		dev_err(&spi->dev, "Failed to get config gpio: %ld\n",
 			PTR_ERR(conf->config));

[PATCH 4.14 77/91] earlycon: Use a pointer table to fix __earlycon_table stride

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Daniel Kurtz <djkurtz@chromium.org>

commit dd709e72cb934eefd44de8d9969097173fbf45dc upstream.

Commit 99492c39f39f ("earlycon: Fix __earlycon_table stride") tried to fix
__earlycon_table stride by forcing the earlycon_id struct alignment to 32
and asking the linker to 32-byte align the __earlycon_table symbol.  This
fix was based on commit 07fca0e57fca92 ("tracing: Properly align linker
defined symbols") which tried a similar fix for the tracing subsystem.

However, this fix doesn't quite work because there is no guarantee that
gcc will place structures packed into an array format.  In fact, gcc 4.9
chooses to 64-byte align these structs by inserting additional padding
between the entries because it has no clue that they are supposed to be in
an array.  If we are unlucky, the linker will assign symbol
"__earlycon_table" to a 32-byte aligned address which does not correspond
to the 64-byte aligned contents of section "__earlycon_table".

To address this same problem, the fix to the tracing system was
subsequently re-implemented using a more robust table of pointers approach
by commits:
 3d56e331b653 ("tracing: Replace syscall_meta_data struct array with pointer array")
 654986462939 ("tracepoints: Fix section alignment using pointer array")
 e4a9ea5ee7c8 ("tracing: Replace trace_event struct array with pointer array")

Let's use this same "array of pointers to structs" approach for
EARLYCON_TABLE.

Fixes: 99492c39f39f ("earlycon: Fix __earlycon_table stride")
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Suggested-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Tested-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/of/fdt.c                  |    7 +++++--
 drivers/tty/serial/earlycon.c     |    6 ++++--
 include/asm-generic/vmlinux.lds.h |    2 +-
 include/linux/serial_core.h       |   21 ++++++++++++++-------
 4 files changed, 24 insertions(+), 12 deletions(-)

--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -975,7 +975,7 @@ int __init early_init_dt_scan_chosen_std
 	int offset;
 	const char *p, *q, *options = NULL;
 	int l;
-	const struct earlycon_id *match;
+	const struct earlycon_id **p_match;
 	const void *fdt = initial_boot_params;
 
 	offset = fdt_path_offset(fdt, "/chosen");
@@ -1002,7 +1002,10 @@ int __init early_init_dt_scan_chosen_std
 		return 0;
 	}
 
-	for (match = __earlycon_table; match < __earlycon_table_end; match++) {
+	for (p_match = __earlycon_table; p_match < __earlycon_table_end;
+	     p_match++) {
+		const struct earlycon_id *match = *p_match;
+
 		if (!match->compatible[0])
 			continue;
 
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -172,7 +172,7 @@ static int __init register_earlycon(char
  */
 int __init setup_earlycon(char *buf)
 {
-	const struct earlycon_id *match;
+	const struct earlycon_id **p_match;
 
 	if (!buf || !buf[0])
 		return -EINVAL;
@@ -180,7 +180,9 @@ int __init setup_earlycon(char *buf)
 	if (early_con.flags & CON_ENABLED)
 		return -EALREADY;
 
-	for (match = __earlycon_table; match < __earlycon_table_end; match++) {
+	for (p_match = __earlycon_table; p_match < __earlycon_table_end;
+	     p_match++) {
+		const struct earlycon_id *match = *p_match;
 		size_t len = strlen(match->name);
 
 		if (strncmp(buf, match->name, len))
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -170,7 +170,7 @@
 #endif
 
 #ifdef CONFIG_SERIAL_EARLYCON
-#define EARLYCON_TABLE() STRUCT_ALIGN();			\
+#define EARLYCON_TABLE() . = ALIGN(8);				\
 			 VMLINUX_SYMBOL(__earlycon_table) = .;	\
 			 KEEP(*(__earlycon_table))		\
 			 VMLINUX_SYMBOL(__earlycon_table_end) = .;
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -351,10 +351,10 @@ struct earlycon_id {
 	char	name[16];
 	char	compatible[128];
 	int	(*setup)(struct earlycon_device *, const char *options);
-} __aligned(32);
+};
 
-extern const struct earlycon_id __earlycon_table[];
-extern const struct earlycon_id __earlycon_table_end[];
+extern const struct earlycon_id *__earlycon_table[];
+extern const struct earlycon_id *__earlycon_table_end[];
 
 #if defined(CONFIG_SERIAL_EARLYCON) && !defined(MODULE)
 #define EARLYCON_USED_OR_UNUSED	__used
@@ -362,12 +362,19 @@ extern const struct earlycon_id __earlyc
 #define EARLYCON_USED_OR_UNUSED	__maybe_unused
 #endif
 
-#define OF_EARLYCON_DECLARE(_name, compat, fn)				\
-	static const struct earlycon_id __UNIQUE_ID(__earlycon_##_name)	\
-	     EARLYCON_USED_OR_UNUSED __section(__earlycon_table)	\
+#define _OF_EARLYCON_DECLARE(_name, compat, fn, unique_id)		\
+	static const struct earlycon_id unique_id			\
+	     EARLYCON_USED_OR_UNUSED __initconst			\
 		= { .name = __stringify(_name),				\
 		    .compatible = compat,				\
-		    .setup = fn  }
+		    .setup = fn  };					\
+	static const struct earlycon_id EARLYCON_USED_OR_UNUSED		\
+		__section(__earlycon_table)				\
+		* const __PASTE(__p, unique_id) = &unique_id
+
+#define OF_EARLYCON_DECLARE(_name, compat, fn)				\
+	_OF_EARLYCON_DECLARE(_name, compat, fn,				\
+			     __UNIQUE_ID(__earlycon_##_name))
 
 #define EARLYCON_DECLARE(_name, fn)	OF_EARLYCON_DECLARE(_name, "", fn)
 

[PATCH 4.14 78/91] cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>

commit c0f7f5b6c69107ca92909512533e70258ee19188 upstream.

gpstate_timer_handler() uses synchronous smp_call to set the pstate
on the requested core. This causes the below hard lockup:

  smp_call_function_single+0x110/0x180 (unreliable)
  smp_call_function_any+0x180/0x250
  gpstate_timer_handler+0x1e8/0x580
  call_timer_fn+0x50/0x1c0
  expire_timers+0x138/0x1f0
  run_timer_softirq+0x1e8/0x270
  __do_softirq+0x158/0x3e4
  irq_exit+0xe8/0x120
  timer_interrupt+0x9c/0xe0
  decrementer_common+0x114/0x120
  -- interrupt: 901 at doorbell_global_ipi+0x34/0x50
  LR = arch_send_call_function_ipi_mask+0x120/0x130
  arch_send_call_function_ipi_mask+0x4c/0x130
  smp_call_function_many+0x340/0x450
  pmdp_invalidate+0x98/0xe0
  change_huge_pmd+0xe0/0x270
  change_protection_range+0xb88/0xe40
  mprotect_fixup+0x140/0x340
  SyS_mprotect+0x1b4/0x350
  system_call+0x58/0x6c

One way to avoid this is removing the smp-call. We can ensure that the
timer always runs on one of the policy-cpus. If the timer gets
migrated to a cpu outside the policy then re-queue it back on the
policy->cpus. This way we can get rid of the smp-call which was being
used to set the pstate on the policy->cpus.

Fixes: 7bc54b652f13 ("timers, cpufreq/powernv: Initialize the gpstate timer as pinned")
Cc: stable@vger.kernel.org # v4.8+
Reported-by: Nicholas Piggin <npiggin@gmail.com>
Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/cpufreq/powernv-cpufreq.c |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -646,6 +646,16 @@ void gpstate_timer_handler(unsigned long
 
 	if (!spin_trylock(&gpstates->gpstate_lock))
 		return;
+	/*
+	 * If the timer has migrated to the different cpu then bring
+	 * it back to one of the policy->cpus
+	 */
+	if (!cpumask_test_cpu(raw_smp_processor_id(), policy->cpus)) {
+		gpstates->timer.expires = jiffies + msecs_to_jiffies(1);
+		add_timer_on(&gpstates->timer, cpumask_first(policy->cpus));
+		spin_unlock(&gpstates->gpstate_lock);
+		return;
+	}
 
 	/*
 	 * If PMCR was last updated was using fast_swtich then
@@ -685,10 +695,8 @@ void gpstate_timer_handler(unsigned long
 	if (gpstate_idx != gpstates->last_lpstate_idx)
 		queue_gpstate_timer(gpstates);
 
+	set_pstate(&freq_data);
 	spin_unlock(&gpstates->gpstate_lock);
-
-	/* Timer may get migrated to a different cpu on cpu hot unplug */
-	smp_call_function_any(policy->cpus, set_pstate, &freq_data, 1);
 }
 
 /*

[PATCH 4.14 79/91] rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Nicholas Piggin <npiggin@gmail.com>

commit 682e6b4da5cbe8e9a53f979a58c2a9d7dc997175 upstream.

The OPAL RTC driver does not sleep in case it gets OPAL_BUSY or
OPAL_BUSY_EVENT from firmware, which causes large scheduling
latencies, up to 50 seconds have been observed here when RTC stops
responding (BMC reboot can do it).

Fix this by converting it to the standard form OPAL_BUSY loop that
sleeps.

Fixes: 628daa8d5abf ("powerpc/powernv: Add RTC and NVRAM support plus RTAS fallbacks")
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/powerpc/platforms/powernv/opal-rtc.c |    8 ++++--
 drivers/rtc/rtc-opal.c                    |   37 ++++++++++++++++++------------
 2 files changed, 28 insertions(+), 17 deletions(-)

--- a/arch/powerpc/platforms/powernv/opal-rtc.c
+++ b/arch/powerpc/platforms/powernv/opal-rtc.c
@@ -48,10 +48,12 @@ unsigned long __init opal_get_boot_time(
 
 	while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
 		rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms);
-		if (rc == OPAL_BUSY_EVENT)
+		if (rc == OPAL_BUSY_EVENT) {
+			mdelay(OPAL_BUSY_DELAY_MS);
 			opal_poll_events(NULL);
-		else if (rc == OPAL_BUSY)
-			mdelay(10);
+		} else if (rc == OPAL_BUSY) {
+			mdelay(OPAL_BUSY_DELAY_MS);
+		}
 	}
 	if (rc != OPAL_SUCCESS)
 		return 0;
--- a/drivers/rtc/rtc-opal.c
+++ b/drivers/rtc/rtc-opal.c
@@ -57,7 +57,7 @@ static void tm_to_opal(struct rtc_time *
 
 static int opal_get_rtc_time(struct device *dev, struct rtc_time *tm)
 {
-	long rc = OPAL_BUSY;
+	s64 rc = OPAL_BUSY;
 	int retries = 10;
 	u32 y_m_d;
 	u64 h_m_s_ms;
@@ -66,13 +66,17 @@ static int opal_get_rtc_time(struct devi
 
 	while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
 		rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms);
-		if (rc == OPAL_BUSY_EVENT)
+		if (rc == OPAL_BUSY_EVENT) {
+			msleep(OPAL_BUSY_DELAY_MS);
 			opal_poll_events(NULL);
-		else if (retries-- && (rc == OPAL_HARDWARE
-				       || rc == OPAL_INTERNAL_ERROR))
-			msleep(10);
-		else if (rc != OPAL_BUSY && rc != OPAL_BUSY_EVENT)
-			break;
+		} else if (rc == OPAL_BUSY) {
+			msleep(OPAL_BUSY_DELAY_MS);
+		} else if (rc == OPAL_HARDWARE || rc == OPAL_INTERNAL_ERROR) {
+			if (retries--) {
+				msleep(10); /* Wait 10ms before retry */
+				rc = OPAL_BUSY; /* go around again */
+			}
+		}
 	}
 
 	if (rc != OPAL_SUCCESS)
@@ -87,21 +91,26 @@ static int opal_get_rtc_time(struct devi
 
 static int opal_set_rtc_time(struct device *dev, struct rtc_time *tm)
 {
-	long rc = OPAL_BUSY;
+	s64 rc = OPAL_BUSY;
 	int retries = 10;
 	u32 y_m_d = 0;
 	u64 h_m_s_ms = 0;
 
 	tm_to_opal(tm, &y_m_d, &h_m_s_ms);
+
 	while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
 		rc = opal_rtc_write(y_m_d, h_m_s_ms);
-		if (rc == OPAL_BUSY_EVENT)
+		if (rc == OPAL_BUSY_EVENT) {
+			msleep(OPAL_BUSY_DELAY_MS);
 			opal_poll_events(NULL);
-		else if (retries-- && (rc == OPAL_HARDWARE
-				       || rc == OPAL_INTERNAL_ERROR))
-			msleep(10);
-		else if (rc != OPAL_BUSY && rc != OPAL_BUSY_EVENT)
-			break;
+		} else if (rc == OPAL_BUSY) {
+			msleep(OPAL_BUSY_DELAY_MS);
+		} else if (rc == OPAL_HARDWARE || rc == OPAL_INTERNAL_ERROR) {
+			if (retries--) {
+				msleep(10); /* Wait 10ms before retry */
+				rc = OPAL_BUSY; /* go around again */
+			}
+		}
 	}
 
 	return rc == OPAL_SUCCESS ? 0 : -EIO;

[PATCH 4.14 80/91] drm/amdgpu: set COMPUTE_PGM_RSRC1 for SGPR/VGPR clearing shaders

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Nicolai Hähnle <nicolai.haehnle@amd.com>

commit 75569c182e4f65cd8826a5853dc9cbca703cbd0e upstream.

Otherwise, the SQ may skip some of the register writes, or shader waves may
be allocated where we don't expect them, so that as a result we don't actually
reset all of the register SRAMs. This can lead to spurious ECC errors later on
if a shader uses an uninitialized register.

Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -1398,10 +1398,11 @@ static const u32 sgpr_init_compute_shade
 static const u32 vgpr_init_regs[] =
 {
 	mmCOMPUTE_STATIC_THREAD_MGMT_SE0, 0xffffffff,
-	mmCOMPUTE_RESOURCE_LIMITS, 0,
+	mmCOMPUTE_RESOURCE_LIMITS, 0x1000000, /* CU_GROUP_COUNT=1 */
 	mmCOMPUTE_NUM_THREAD_X, 256*4,
 	mmCOMPUTE_NUM_THREAD_Y, 1,
 	mmCOMPUTE_NUM_THREAD_Z, 1,
+	mmCOMPUTE_PGM_RSRC1, 0x100004f, /* VGPRS=15 (64 logical VGPRs), SGPRS=1 (16 SGPRs), BULKY=1 */
 	mmCOMPUTE_PGM_RSRC2, 20,
 	mmCOMPUTE_USER_DATA_0, 0xedcedc00,
 	mmCOMPUTE_USER_DATA_1, 0xedcedc01,
@@ -1418,10 +1419,11 @@ static const u32 vgpr_init_regs[] =
 static const u32 sgpr1_init_regs[] =
 {
 	mmCOMPUTE_STATIC_THREAD_MGMT_SE0, 0x0f,
-	mmCOMPUTE_RESOURCE_LIMITS, 0x1000000,
+	mmCOMPUTE_RESOURCE_LIMITS, 0x1000000, /* CU_GROUP_COUNT=1 */
 	mmCOMPUTE_NUM_THREAD_X, 256*5,
 	mmCOMPUTE_NUM_THREAD_Y, 1,
 	mmCOMPUTE_NUM_THREAD_Z, 1,
+	mmCOMPUTE_PGM_RSRC1, 0x240, /* SGPRS=9 (80 GPRS) */
 	mmCOMPUTE_PGM_RSRC2, 20,
 	mmCOMPUTE_USER_DATA_0, 0xedcedc00,
 	mmCOMPUTE_USER_DATA_1, 0xedcedc01,
@@ -1442,6 +1444,7 @@ static const u32 sgpr2_init_regs[] =
 	mmCOMPUTE_NUM_THREAD_X, 256*5,
 	mmCOMPUTE_NUM_THREAD_Y, 1,
 	mmCOMPUTE_NUM_THREAD_Z, 1,
+	mmCOMPUTE_PGM_RSRC1, 0x240, /* SGPRS=9 (80 GPRS) */
 	mmCOMPUTE_PGM_RSRC2, 20,
 	mmCOMPUTE_USER_DATA_0, 0xedcedc00,
 	mmCOMPUTE_USER_DATA_1, 0xedcedc01,

[PATCH 4.14 81/91] drm/i915: Enable display WA#1183 from its correct spot

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Imre Deak <imre.deak@intel.com>

commit ac315c621f01d4b8a53dec317c7ae322fd26ff38 upstream.

The DMC FW specific part of display WA#1183 is supposed to be enabled
whenever enabling DC5 or DC6, so move it to the DC6 enable function
from the DC6 disable function.

I noticed this after Daniel's patch to remove the unused
skl_disable_dc6() function.

Fixes: 53421c2fe99c ("drm/i915: Apply Display WA #1183 on skl, kbl, and cfl")
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180419155109.29451-1-imre.deak@intel.com
(cherry picked from commit b49be6622f08187129561cff0409f7b06b33de57)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/i915/intel_runtime_pm.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -622,19 +622,18 @@ void skl_enable_dc6(struct drm_i915_priv
 
 	DRM_DEBUG_KMS("Enabling DC6\n");
 
-	gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
+	/* Wa Display #1183: skl,kbl,cfl */
+	if (IS_GEN9_BC(dev_priv))
+		I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) |
+			   SKL_SELECT_ALTERNATE_DC_EXIT);
 
+	gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
 }
 
 void skl_disable_dc6(struct drm_i915_private *dev_priv)
 {
 	DRM_DEBUG_KMS("Disabling DC6\n");
 
-	/* Wa Display #1183: skl,kbl,cfl */
-	if (IS_GEN9_BC(dev_priv))
-		I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) |
-			   SKL_SELECT_ALTERNATE_DC_EXIT);
-
 	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
 }
 

[PATCH 4.14 82/91] objtool, perf: Fix GCC 8 -Wrestrict error

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Josh Poimboeuf <jpoimboe@redhat.com>

commit 854e55ad289ef8888e7991f0ada85d5846f5afb9 upstream.

Starting with recent GCC 8 builds, objtool and perf fail to build with
the following error:

  ../str_error_r.c: In function ‘str_error_r’:
  ../str_error_r.c:25:3: error: passing argument 1 to restrict-qualified parameter aliases with argument 5 [-Werror=restrict]
     snprintf(buf, buflen, "INTERNAL ERROR: strerror_r(%d, %p, %zd)=%d", errnum, buf, buflen, err);

The code seems harmless, but there's probably no benefit in printing the
'buf' pointer in this situation anyway, so just remove it to make GCC
happy.

Reported-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20180316031154.juk2uncs7baffctp@treble
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Fredrik Schön <fredrikschon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 tools/lib/str_error_r.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/lib/str_error_r.c
+++ b/tools/lib/str_error_r.c
@@ -22,6 +22,6 @@ char *str_error_r(int errnum, char *buf,
 {
 	int err = strerror_r(errnum, buf, buflen);
 	if (err)
-		snprintf(buf, buflen, "INTERNAL ERROR: strerror_r(%d, %p, %zd)=%d", errnum, buf, buflen, err);
+		snprintf(buf, buflen, "INTERNAL ERROR: strerror_r(%d, [buf], %zd)=%d", errnum, buflen, err);
 	return buf;
 }

[PATCH 4.14 83/91] tools/lib/subcmd/pager.c: do not alias select() params

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>

commit ad343a98e74e85aa91d844310e797f96fee6983b upstream.

Use a separate fd set for select()-s exception fds param to fix the
following gcc warning:

  pager.c:36:12: error: passing argument 2 to restrict-qualified parameter aliases with argument 4 [-Werror=restrict]
    select(1, &in, NULL, &in, NULL);
              ^~~        ~~~

Link: http://lkml.kernel.org/r/20180101105626.7168-1-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Fredrik Schön <fredrikschon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 tools/lib/subcmd/pager.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/tools/lib/subcmd/pager.c
+++ b/tools/lib/subcmd/pager.c
@@ -30,10 +30,13 @@ static void pager_preexec(void)
 	 * have real input
 	 */
 	fd_set in;
+	fd_set exception;
 
 	FD_ZERO(&in);
+	FD_ZERO(&exception);
 	FD_SET(0, &in);
-	select(1, &in, NULL, &in, NULL);
+	FD_SET(0, &exception);
+	select(1, &in, NULL, &exception, NULL);
 
 	setenv("LESS", "FRSX", 0);
 }

[PATCH 4.14 84/91] x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Arnd Bergmann <arnd@arndb.de>

commit 1a512c0882bd311c5b5561840fcfbe4c25b8f319 upstream.

A bugfix broke the x32 shmid64_ds and msqid64_ds data structure layout
(as seen from user space)  a few years ago: Originally, __BITS_PER_LONG
was defined as 64 on x32, so we did not have padding after the 64-bit
__kernel_time_t fields, After __BITS_PER_LONG got changed to 32,
applications would observe extra padding.

In other parts of the uapi headers we seem to have a mix of those
expecting either 32 or 64 on x32 applications, so we can't easily revert
the path that broke these two structures.

Instead, this patch decouples x32 from the other architectures and moves
it back into arch specific headers, partially reverting the even older
commit 73a2d096fdf2 ("x86: remove all now-duplicate header files").

It's not clear whether this ever made any difference, since at least
glibc carries its own (correct) copy of both of these header files,
so possibly no application has ever observed the definitions here.

Based on a suggestion from H.J. Lu, I tried out the tool from
https://github.com/hjl-tools/linux-header to find other such
bugs, which pointed out the same bug in statfs(), which also has
a separate (correct) copy in glibc.

Fixes: f4b4aae18288 ("x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H . J . Lu" <hjl.tools@gmail.com>
Cc: Jeffrey Walton <noloader@gmail.com>
Cc: stable@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180424212013.3967461-1-arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/include/uapi/asm/msgbuf.h |   31 +++++++++++++++++++++++++++
 arch/x86/include/uapi/asm/shmbuf.h |   42 +++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)

--- a/arch/x86/include/uapi/asm/msgbuf.h
+++ b/arch/x86/include/uapi/asm/msgbuf.h
@@ -1 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __ASM_X64_MSGBUF_H
+#define __ASM_X64_MSGBUF_H
+
+#if !defined(__x86_64__) || !defined(__ILP32__)
 #include <asm-generic/msgbuf.h>
+#else
+/*
+ * The msqid64_ds structure for x86 architecture with x32 ABI.
+ *
+ * On x86-32 and x86-64 we can just use the generic definition, but
+ * x32 uses the same binary layout as x86_64, which is differnet
+ * from other 32-bit architectures.
+ */
+
+struct msqid64_ds {
+	struct ipc64_perm msg_perm;
+	__kernel_time_t msg_stime;	/* last msgsnd time */
+	__kernel_time_t msg_rtime;	/* last msgrcv time */
+	__kernel_time_t msg_ctime;	/* last change time */
+	__kernel_ulong_t msg_cbytes;	/* current number of bytes on queue */
+	__kernel_ulong_t msg_qnum;	/* number of messages in queue */
+	__kernel_ulong_t msg_qbytes;	/* max number of bytes on queue */
+	__kernel_pid_t msg_lspid;	/* pid of last msgsnd */
+	__kernel_pid_t msg_lrpid;	/* last receive pid */
+	__kernel_ulong_t __unused4;
+	__kernel_ulong_t __unused5;
+};
+
+#endif
+
+#endif /* __ASM_GENERIC_MSGBUF_H */
--- a/arch/x86/include/uapi/asm/shmbuf.h
+++ b/arch/x86/include/uapi/asm/shmbuf.h
@@ -1 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __ASM_X86_SHMBUF_H
+#define __ASM_X86_SHMBUF_H
+
+#if !defined(__x86_64__) || !defined(__ILP32__)
 #include <asm-generic/shmbuf.h>
+#else
+/*
+ * The shmid64_ds structure for x86 architecture with x32 ABI.
+ *
+ * On x86-32 and x86-64 we can just use the generic definition, but
+ * x32 uses the same binary layout as x86_64, which is differnet
+ * from other 32-bit architectures.
+ */
+
+struct shmid64_ds {
+	struct ipc64_perm	shm_perm;	/* operation perms */
+	size_t			shm_segsz;	/* size of segment (bytes) */
+	__kernel_time_t		shm_atime;	/* last attach time */
+	__kernel_time_t		shm_dtime;	/* last detach time */
+	__kernel_time_t		shm_ctime;	/* last change time */
+	__kernel_pid_t		shm_cpid;	/* pid of creator */
+	__kernel_pid_t		shm_lpid;	/* pid of last operator */
+	__kernel_ulong_t	shm_nattch;	/* no. of current attaches */
+	__kernel_ulong_t	__unused4;
+	__kernel_ulong_t	__unused5;
+};
+
+struct shminfo64 {
+	__kernel_ulong_t	shmmax;
+	__kernel_ulong_t	shmmin;
+	__kernel_ulong_t	shmmni;
+	__kernel_ulong_t	shmseg;
+	__kernel_ulong_t	shmall;
+	__kernel_ulong_t	__unused1;
+	__kernel_ulong_t	__unused2;
+	__kernel_ulong_t	__unused3;
+	__kernel_ulong_t	__unused4;
+};
+
+#endif
+
+#endif /* __ASM_X86_SHMBUF_H */

[PATCH 4.14 85/91] x86/smpboot: Dont use mwait_play_dead() on AMD systems

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Yazen Ghannam <yazen.ghannam@amd.com>

commit da6fa7ef67f07108a1b0cb9fd9e7fcaabd39c051 upstream.

Recent AMD systems support using MWAIT for C1 state. However, MWAIT will
not allow deeper cstates than C1 on current systems.

play_dead() expects to use the deepest state available.  The deepest state
available on AMD systems is reached through SystemIO or HALT. If MWAIT is
available, it is preferred over the other methods, so the CPU never reaches
the deepest possible state.

Don't try to use MWAIT to play_dead() on AMD systems. Instead, use CPUIDLE
to enter the deepest state advertised by firmware. If CPUIDLE is not
available then fallback to HALT.

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>
Link: https://lkml.kernel.org/r/20180403140228.58540-1-Yazen.Ghannam@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/smpboot.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1613,6 +1613,8 @@ static inline void mwait_play_dead(void)
 	void *mwait_ptr;
 	int i;
 
+	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
+		return;
 	if (!this_cpu_has(X86_FEATURE_MWAIT))
 		return;
 	if (!this_cpu_has(X86_FEATURE_CLFLUSH))

[PATCH 4.14 86/91] x86/microcode/intel: Save microcode patch unconditionally

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Borislav Petkov <bp@suse.de>

commit 84749d83758af6576552046b215b9b7f37f9556b upstream.

save_mc_for_early() was a no-op on !CONFIG_HOTPLUG_CPU but the
generic_load_microcode() path saves the microcode patches it has found into
the cache of patches which is used for late loading too. Regardless of
whether CPU hotplug is used or not.

Make the saving unconditional so that late loading can find the proper
patch.

Reported-by: Vitezslav Samel <vitezslav@samel.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Vitezslav Samel <vitezslav@samel.cz>
Tested-by: Ashok Raj <ashok.raj@intel.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20180418081140.GA2439@pc11.op.pod.cz
Link: https://lkml.kernel.org/r/20180421081930.15741-1-bp@alien8.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/cpu/microcode/intel.c |    2 --
 1 file changed, 2 deletions(-)

--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -485,7 +485,6 @@ static void show_saved_mc(void)
  */
 static void save_mc_for_early(u8 *mc, unsigned int size)
 {
-#ifdef CONFIG_HOTPLUG_CPU
 	/* Synchronization during CPU hotplug. */
 	static DEFINE_MUTEX(x86_cpu_microcode_mutex);
 
@@ -495,7 +494,6 @@ static void save_mc_for_early(u8 *mc, un
 	show_saved_mc();
 
 	mutex_unlock(&x86_cpu_microcode_mutex);
-#endif
 }
 
 static bool load_builtin_intel_microcode(struct cpio_data *cp)

[PATCH 4.14 87/91] x86/microcode: Do not exit early from __reload_late()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Borislav Petkov <bp@suse.de>

commit 09e182d17e8891dd73baba961a0f5a82e9274c97 upstream.

Vitezslav reported a case where the

  "Timeout during microcode update!"

panic would hit. After a deeper look, it turned out that his .config had
CONFIG_HOTPLUG_CPU disabled which practically made save_mc_for_early() a
no-op.

When that happened, the discovered microcode patch wasn't saved into the
cache and the late loading path wouldn't find any.

This, then, lead to early exit from __reload_late() and thus CPUs waiting
until the timeout is reached, leading to the panic.

In hindsight, that function should have been written so it does not return
before the post-synchronization. Oh well, I know better now...

Fixes: bb8c13d61a62 ("x86/microcode: Fix CPU synchronization routine")
Reported-by: Vitezslav Samel <vitezslav@samel.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Vitezslav Samel <vitezslav@samel.cz>
Tested-by: Ashok Raj <ashok.raj@intel.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20180418081140.GA2439@pc11.op.pod.cz
Link: https://lkml.kernel.org/r/20180421081930.15741-2-bp@alien8.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/cpu/microcode/core.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -564,14 +564,12 @@ static int __reload_late(void *info)
 	apply_microcode_local(&err);
 	spin_unlock(&update_lock);
 
+	/* siblings return UCODE_OK because their engine got updated already */
 	if (err > UCODE_NFOUND) {
 		pr_warn("Error reloading microcode on CPU %d\n", cpu);
-		return -1;
-	/* siblings return UCODE_OK because their engine got updated already */
+		ret = -1;
 	} else if (err == UCODE_UPDATED || err == UCODE_OK) {
 		ret = 1;
-	} else {
-		return ret;
 	}
 
 	/*

[PATCH 4.14 88/91] tick/sched: Do not mess with an enqueued hrtimer

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Thomas Gleixner <tglx@linutronix.de>

commit 1f71addd34f4c442bec7d7c749acc1beb58126f2 upstream.

Kaike reported that in tests rdma hrtimers occasionaly stopped working. He
did great debugging, which provided enough context to decode the problem.

CPU 3			     	      	     CPU 2

idle
start sched_timer expires = 712171000000
 queue->next = sched_timer
					    start rdmavt timer. expires = 712172915662
					    lock(baseof(CPU3))
tick_nohz_stop_tick()
tick = 716767000000			    timerqueue_add(tmr)

hrtimer_set_expires(sched_timer, tick);
  sched_timer->expires = 716767000000  <---- FAIL
					     if (tmr->expires < queue->next->expires)
hrtimer_start(sched_timer)		          queue->next = tmr;
lock(baseof(CPU3))
					     unlock(baseof(CPU3))
timerqueue_remove()
timerqueue_add()

ts->sched_timer is queued and queue->next is pointing to it, but then
ts->sched_timer.expires is modified.

This not only corrupts the ordering of the timerqueue RB tree, it also
makes CPU2 see the new expiry time of timerqueue->next->expires when
checking whether timerqueue->next needs to be updated. So CPU2 sees that
the rdma timer is earlier than timerqueue->next and sets the rdma timer as
new next.

Depending on whether it had also seen the new time at RB tree enqueue, it
might have queued the rdma timer at the wrong place and then after removing
the sched_timer the RB tree is completely hosed.

The problem was introduced with a commit which tried to solve inconsistency
between the hrtimer in the tick_sched data and the underlying hardware
clockevent. It split out hrtimer_set_expires() to store the new tick time
in both the NOHZ and the NOHZ + HIGHRES case, but missed the fact that in
the NOHZ + HIGHRES case the hrtimer might still be queued.

Use hrtimer_start(timer, tick...) for the NOHZ + HIGHRES case which sets
timer->expires after canceling the timer and move the hrtimer_set_expires()
invocation into the NOHZ only code path which is not affected as it merily
uses the hrtimer as next event storage so code pathes can be shared with
the NOHZ + HIGHRES case.

Fixes: d4af6d933ccf ("nohz: Fix spurious warning when hrtimer and clockevent get out of sync")
Reported-by: "Wan Kaike" <kaike.wan@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Cc: "Marciniszyn Mike" <mike.marciniszyn@intel.com>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: linux-rdma@vger.kernel.org
Cc: "Dalessandro Dennis" <dennis.dalessandro@intel.com>
Cc: "Fleck John" <john.fleck@intel.com>
Cc: stable@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: "Weiny Ira" <ira.weiny@intel.com>
Cc: "linux-rdma@vger.kernel.org"
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1804241637390.1679@nanos.tec.linutronix.de
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1804242119210.1597@nanos.tec.linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/time/tick-sched.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -820,12 +820,13 @@ static ktime_t tick_nohz_stop_sched_tick
 		goto out;
 	}
 
-	hrtimer_set_expires(&ts->sched_timer, tick);
-
-	if (ts->nohz_mode == NOHZ_MODE_HIGHRES)
-		hrtimer_start_expires(&ts->sched_timer, HRTIMER_MODE_ABS_PINNED);
-	else
+	if (ts->nohz_mode == NOHZ_MODE_HIGHRES) {
+		hrtimer_start(&ts->sched_timer, tick, HRTIMER_MODE_ABS_PINNED);
+	} else {
+		hrtimer_set_expires(&ts->sched_timer, tick);
 		tick_program_event(tick, 1);
+	}
+
 out:
 	/*
 	 * Update the estimated sleep length until the next timer

[PATCH 4.14 89/91] arm/arm64: KVM: Add PSCI version selection API

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Marc Zyngier <marc.zyngier@arm.com>

commit 85bd0ba1ff9875798fad94218b627ea9f768f3c3 upstream.

Although we've implemented PSCI 0.1, 0.2 and 1.0, we expose either 0.1
or 1.0 to a guest, defaulting to the latest version of the PSCI
implementation that is compatible with the requested version. This is
no different from doing a firmware upgrade on KVM.

But in order to give a chance to hypothetical badly implemented guests
that would have a fit by discovering something other than PSCI 0.2,
let's provide a new API that allows userspace to pick one particular
version of the API.

This is implemented as a new class of "firmware" registers, where
we expose the PSCI version. This allows the PSCI version to be
save/restored as part of a guest migration, and also set to
any supported version if the guest requires it.

Cc: stable@vger.kernel.org #4.16
Reviewed-by: Christoffer Dall <cdall@kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 Documentation/virtual/kvm/api.txt      |    9 ++++
 Documentation/virtual/kvm/arm/psci.txt |   30 ++++++++++++++++
 arch/arm/include/asm/kvm_host.h        |    3 +
 arch/arm/include/uapi/asm/kvm.h        |    6 +++
 arch/arm/kvm/guest.c                   |   13 +++++++
 arch/arm64/include/asm/kvm_host.h      |    3 +
 arch/arm64/include/uapi/asm/kvm.h      |    6 +++
 arch/arm64/kvm/guest.c                 |   14 +++++++
 include/kvm/arm_psci.h                 |   16 +++++++-
 virt/kvm/arm/psci.c                    |   60 +++++++++++++++++++++++++++++++++
 10 files changed, 156 insertions(+), 4 deletions(-)

--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -1940,6 +1940,9 @@ ARM 32-bit VFP control registers have th
 ARM 64-bit FP registers have the following id bit patterns:
   0x4030 0000 0012 0 <regno:12>
 
+ARM firmware pseudo-registers have the following bit pattern:
+  0x4030 0000 0014 <regno:16>
+
 
 arm64 registers are mapped using the lower 32 bits. The upper 16 of
 that is the register group type, or coprocessor number:
@@ -1956,6 +1959,9 @@ arm64 CCSIDR registers are demultiplexed
 arm64 system registers have the following id bit patterns:
   0x6030 0000 0013 <op0:2> <op1:3> <crn:4> <crm:4> <op2:3>
 
+arm64 firmware pseudo-registers have the following bit pattern:
+  0x6030 0000 0014 <regno:16>
+
 
 MIPS registers are mapped using the lower 32 bits.  The upper 16 of that is
 the register group type:
@@ -2490,7 +2496,8 @@ Possible features:
 	  and execute guest code when KVM_RUN is called.
 	- KVM_ARM_VCPU_EL1_32BIT: Starts the CPU in a 32bit mode.
 	  Depends on KVM_CAP_ARM_EL1_32BIT (arm64 only).
-	- KVM_ARM_VCPU_PSCI_0_2: Emulate PSCI v0.2 for the CPU.
+	- KVM_ARM_VCPU_PSCI_0_2: Emulate PSCI v0.2 (or a future revision
+          backward compatible with v0.2) for the CPU.
 	  Depends on KVM_CAP_ARM_PSCI_0_2.
 	- KVM_ARM_VCPU_PMU_V3: Emulate PMUv3 for the CPU.
 	  Depends on KVM_CAP_ARM_PMU_V3.
--- /dev/null
+++ b/Documentation/virtual/kvm/arm/psci.txt
@@ -0,0 +1,30 @@
+KVM implements the PSCI (Power State Coordination Interface)
+specification in order to provide services such as CPU on/off, reset
+and power-off to the guest.
+
+The PSCI specification is regularly updated to provide new features,
+and KVM implements these updates if they make sense from a virtualization
+point of view.
+
+This means that a guest booted on two different versions of KVM can
+observe two different "firmware" revisions. This could cause issues if
+a given guest is tied to a particular PSCI revision (unlikely), or if
+a migration causes a different PSCI version to be exposed out of the
+blue to an unsuspecting guest.
+
+In order to remedy this situation, KVM exposes a set of "firmware
+pseudo-registers" that can be manipulated using the GET/SET_ONE_REG
+interface. These registers can be saved/restored by userspace, and set
+to a convenient value if required.
+
+The following register is defined:
+
+* KVM_REG_ARM_PSCI_VERSION:
+
+  - Only valid if the vcpu has the KVM_ARM_VCPU_PSCI_0_2 feature set
+    (and thus has already been initialized)
+  - Returns the current PSCI version on GET_ONE_REG (defaulting to the
+    highest PSCI version implemented by KVM and compatible with v0.2)
+  - Allows any PSCI version implemented by KVM and compatible with
+    v0.2 to be set with SET_ONE_REG
+  - Affects the whole VM (even if the register view is per-vcpu)
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -75,6 +75,9 @@ struct kvm_arch {
 	/* Interrupt controller */
 	struct vgic_dist	vgic;
 	int max_vcpus;
+
+	/* Mandated version of PSCI */
+	u32 psci_version;
 };
 
 #define KVM_NR_MEM_OBJS     40
--- a/arch/arm/include/uapi/asm/kvm.h
+++ b/arch/arm/include/uapi/asm/kvm.h
@@ -180,6 +180,12 @@ struct kvm_arch_memory_slot {
 #define KVM_REG_ARM_VFP_FPINST		0x1009
 #define KVM_REG_ARM_VFP_FPINST2		0x100A
 
+/* KVM-as-firmware specific pseudo-registers */
+#define KVM_REG_ARM_FW			(0x0014 << KVM_REG_ARM_COPROC_SHIFT)
+#define KVM_REG_ARM_FW_REG(r)		(KVM_REG_ARM | KVM_REG_SIZE_U64 | \
+					 KVM_REG_ARM_FW | ((r) & 0xffff))
+#define KVM_REG_ARM_PSCI_VERSION	KVM_REG_ARM_FW_REG(0)
+
 /* Device Control API: ARM VGIC */
 #define KVM_DEV_ARM_VGIC_GRP_ADDR	0
 #define KVM_DEV_ARM_VGIC_GRP_DIST_REGS	1
--- a/arch/arm/kvm/guest.c
+++ b/arch/arm/kvm/guest.c
@@ -22,6 +22,7 @@
 #include <linux/module.h>
 #include <linux/vmalloc.h>
 #include <linux/fs.h>
+#include <kvm/arm_psci.h>
 #include <asm/cputype.h>
 #include <linux/uaccess.h>
 #include <asm/kvm.h>
@@ -176,6 +177,7 @@ static unsigned long num_core_regs(void)
 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu)
 {
 	return num_core_regs() + kvm_arm_num_coproc_regs(vcpu)
+		+ kvm_arm_get_fw_num_regs(vcpu)
 		+ NUM_TIMER_REGS;
 }
 
@@ -196,6 +198,11 @@ int kvm_arm_copy_reg_indices(struct kvm_
 		uindices++;
 	}
 
+	ret = kvm_arm_copy_fw_reg_indices(vcpu, uindices);
+	if (ret)
+		return ret;
+	uindices += kvm_arm_get_fw_num_regs(vcpu);
+
 	ret = copy_timer_indices(vcpu, uindices);
 	if (ret)
 		return ret;
@@ -214,6 +221,9 @@ int kvm_arm_get_reg(struct kvm_vcpu *vcp
 	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
 		return get_core_reg(vcpu, reg);
 
+	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_FW)
+		return kvm_arm_get_fw_reg(vcpu, reg);
+
 	if (is_timer_reg(reg->id))
 		return get_timer_reg(vcpu, reg);
 
@@ -230,6 +240,9 @@ int kvm_arm_set_reg(struct kvm_vcpu *vcp
 	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
 		return set_core_reg(vcpu, reg);
 
+	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_FW)
+		return kvm_arm_set_fw_reg(vcpu, reg);
+
 	if (is_timer_reg(reg->id))
 		return set_timer_reg(vcpu, reg);
 
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -71,6 +71,9 @@ struct kvm_arch {
 
 	/* Interrupt controller */
 	struct vgic_dist	vgic;
+
+	/* Mandated version of PSCI */
+	u32 psci_version;
 };
 
 #define KVM_NR_MEM_OBJS     40
--- a/arch/arm64/include/uapi/asm/kvm.h
+++ b/arch/arm64/include/uapi/asm/kvm.h
@@ -200,6 +200,12 @@ struct kvm_arch_memory_slot {
 #define KVM_REG_ARM_TIMER_CNT		ARM64_SYS_REG(3, 3, 14, 3, 2)
 #define KVM_REG_ARM_TIMER_CVAL		ARM64_SYS_REG(3, 3, 14, 0, 2)
 
+/* KVM-as-firmware specific pseudo-registers */
+#define KVM_REG_ARM_FW			(0x0014 << KVM_REG_ARM_COPROC_SHIFT)
+#define KVM_REG_ARM_FW_REG(r)		(KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \
+					 KVM_REG_ARM_FW | ((r) & 0xffff))
+#define KVM_REG_ARM_PSCI_VERSION	KVM_REG_ARM_FW_REG(0)
+
 /* Device Control API: ARM VGIC */
 #define KVM_DEV_ARM_VGIC_GRP_ADDR	0
 #define KVM_DEV_ARM_VGIC_GRP_DIST_REGS	1
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -25,6 +25,7 @@
 #include <linux/module.h>
 #include <linux/vmalloc.h>
 #include <linux/fs.h>
+#include <kvm/arm_psci.h>
 #include <asm/cputype.h>
 #include <linux/uaccess.h>
 #include <asm/kvm.h>
@@ -205,7 +206,7 @@ static int get_timer_reg(struct kvm_vcpu
 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu)
 {
 	return num_core_regs() + kvm_arm_num_sys_reg_descs(vcpu)
-                + NUM_TIMER_REGS;
+		+ kvm_arm_get_fw_num_regs(vcpu)	+ NUM_TIMER_REGS;
 }
 
 /**
@@ -225,6 +226,11 @@ int kvm_arm_copy_reg_indices(struct kvm_
 		uindices++;
 	}
 
+	ret = kvm_arm_copy_fw_reg_indices(vcpu, uindices);
+	if (ret)
+		return ret;
+	uindices += kvm_arm_get_fw_num_regs(vcpu);
+
 	ret = copy_timer_indices(vcpu, uindices);
 	if (ret)
 		return ret;
@@ -243,6 +249,9 @@ int kvm_arm_get_reg(struct kvm_vcpu *vcp
 	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
 		return get_core_reg(vcpu, reg);
 
+	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_FW)
+		return kvm_arm_get_fw_reg(vcpu, reg);
+
 	if (is_timer_reg(reg->id))
 		return get_timer_reg(vcpu, reg);
 
@@ -259,6 +268,9 @@ int kvm_arm_set_reg(struct kvm_vcpu *vcp
 	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
 		return set_core_reg(vcpu, reg);
 
+	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_FW)
+		return kvm_arm_set_fw_reg(vcpu, reg);
+
 	if (is_timer_reg(reg->id))
 		return set_timer_reg(vcpu, reg);
 
--- a/include/kvm/arm_psci.h
+++ b/include/kvm/arm_psci.h
@@ -37,10 +37,15 @@ static inline int kvm_psci_version(struc
 	 * Our PSCI implementation stays the same across versions from
 	 * v0.2 onward, only adding the few mandatory functions (such
 	 * as FEATURES with 1.0) that are required by newer
-	 * revisions. It is thus safe to return the latest.
+	 * revisions. It is thus safe to return the latest, unless
+	 * userspace has instructed us otherwise.
 	 */
-	if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features))
+	if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) {
+		if (vcpu->kvm->arch.psci_version)
+			return vcpu->kvm->arch.psci_version;
+
 		return KVM_ARM_PSCI_LATEST;
+	}
 
 	return KVM_ARM_PSCI_0_1;
 }
@@ -48,4 +53,11 @@ static inline int kvm_psci_version(struc
 
 int kvm_hvc_call_handler(struct kvm_vcpu *vcpu);
 
+struct kvm_one_reg;
+
+int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
+int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
+int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
+int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
+
 #endif /* __KVM_ARM_PSCI_H__ */
--- a/virt/kvm/arm/psci.c
+++ b/virt/kvm/arm/psci.c
@@ -18,6 +18,7 @@
 #include <linux/arm-smccc.h>
 #include <linux/preempt.h>
 #include <linux/kvm_host.h>
+#include <linux/uaccess.h>
 #include <linux/wait.h>
 
 #include <asm/cputype.h>
@@ -427,3 +428,62 @@ int kvm_hvc_call_handler(struct kvm_vcpu
 	smccc_set_retval(vcpu, val, 0, 0, 0);
 	return 1;
 }
+
+int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu)
+{
+	return 1;		/* PSCI version */
+}
+
+int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices)
+{
+	if (put_user(KVM_REG_ARM_PSCI_VERSION, uindices))
+		return -EFAULT;
+
+	return 0;
+}
+
+int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
+{
+	if (reg->id == KVM_REG_ARM_PSCI_VERSION) {
+		void __user *uaddr = (void __user *)(long)reg->addr;
+		u64 val;
+
+		val = kvm_psci_version(vcpu, vcpu->kvm);
+		if (copy_to_user(uaddr, &val, KVM_REG_SIZE(reg->id)))
+			return -EFAULT;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
+{
+	if (reg->id == KVM_REG_ARM_PSCI_VERSION) {
+		void __user *uaddr = (void __user *)(long)reg->addr;
+		bool wants_02;
+		u64 val;
+
+		if (copy_from_user(&val, uaddr, KVM_REG_SIZE(reg->id)))
+			return -EFAULT;
+
+		wants_02 = test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features);
+
+		switch (val) {
+		case KVM_ARM_PSCI_0_1:
+			if (wants_02)
+				return -EINVAL;
+			vcpu->kvm->arch.psci_version = val;
+			return 0;
+		case KVM_ARM_PSCI_0_2:
+		case KVM_ARM_PSCI_1_0:
+			if (!wants_02)
+				return -EINVAL;
+			vcpu->kvm->arch.psci_version = val;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}

[PATCH 4.14 90/91] powerpc/eeh: Fix race with driver un/bind

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael Neuling <mikey@neuling.org>

commit f0295e047fcf52ccb42561fb7de6942f5201b676 upstream.

The current EEH callbacks can race with a driver unbind. This can
result in a backtraces like this:

  EEH: Frozen PHB#0-PE#1fc detected
  EEH: PE location: S000009, PHB location: N/A
  CPU: 2 PID: 2312 Comm: kworker/u258:3 Not tainted 4.15.6-openpower1 #2
  Workqueue: nvme-wq nvme_reset_work [nvme]
  Call Trace:
    dump_stack+0x9c/0xd0 (unreliable)
    eeh_dev_check_failure+0x420/0x470
    eeh_check_failure+0xa0/0xa4
    nvme_reset_work+0x138/0x1414 [nvme]
    process_one_work+0x1ec/0x328
    worker_thread+0x2e4/0x3a8
    kthread+0x14c/0x154
    ret_from_kernel_thread+0x5c/0xc8
  nvme nvme1: Removing after probe failure status: -19
  <snip>
  cpu 0x23: Vector: 300 (Data Access) at [c000000ff50f3800]
      pc: c0080000089a0eb0: nvme_error_detected+0x4c/0x90 [nvme]
      lr: c000000000026564: eeh_report_error+0xe0/0x110
      sp: c000000ff50f3a80
     msr: 9000000000009033
     dar: 400
   dsisr: 40000000
    current = 0xc000000ff507c000
    paca    = 0xc00000000fdc9d80   softe: 0        irq_happened: 0x01
      pid   = 782, comm = eehd
  Linux version 4.15.6-openpower1 (smc@smc-desktop) (gcc version 6.4.0 (Buildroot 2017.11.2-00008-g4b6188e)) #2 SM                                             P Tue Feb 27 12:33:27 PST 2018
  enter ? for help
    eeh_report_error+0xe0/0x110
    eeh_pe_dev_traverse+0xc0/0xdc
    eeh_handle_normal_event+0x184/0x4c4
    eeh_handle_event+0x30/0x288
    eeh_event_handler+0x124/0x170
    kthread+0x14c/0x154
    ret_from_kernel_thread+0x5c/0xc8

The first part is an EEH (on boot), the second half is the resulting
crash. nvme probe starts the nvme_reset_work() worker thread. This
worker thread starts touching the device which see a device error
(EEH) and hence queues up an event in the powerpc EEH worker
thread. nvme_reset_work() then continues and runs
nvme_remove_dead_ctrl_work() which results in unbinding the driver
from the device and hence releases all resources. At the same time,
the EEH worker thread starts doing the EEH .error_detected() driver
callback, which no longer works since the resources have been freed.

This fixes the problem in the same way the generic PCIe AER code (in
drivers/pci/pcie/aer/aerdrv_core.c) does. It makes the EEH code hold
the device_lock() while performing the driver EEH callbacks and
associated code. This ensures either the callbacks are no longer
register, or if they are registered the driver will not be removed
from underneath us.

This has been broken forever. The EEH call backs were first introduced
in 2005 (in 77bd7415610) but it's not clear if a lock was needed back
then.

Fixes: 77bd74156101 ("[PATCH] powerpc: PCI Error Recovery: PPC64 core recovery routines")
Cc: stable@vger.kernel.org # v2.6.16+
Signed-off-by: Michael Neuling <mikey@neuling.org>
Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/powerpc/kernel/eeh_driver.c |   61 ++++++++++++++++++++++++---------------
 1 file changed, 38 insertions(+), 23 deletions(-)

--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -207,18 +207,18 @@ static void *eeh_report_error(void *data
 
 	if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
 		return NULL;
+
+	device_lock(&dev->dev);
 	dev->error_state = pci_channel_io_frozen;
 
 	driver = eeh_pcid_get(dev);
-	if (!driver) return NULL;
+	if (!driver) goto out_no_dev;
 
 	eeh_disable_irq(dev);
 
 	if (!driver->err_handler ||
-	    !driver->err_handler->error_detected) {
-		eeh_pcid_put(dev);
-		return NULL;
-	}
+	    !driver->err_handler->error_detected)
+		goto out;
 
 	rc = driver->err_handler->error_detected(dev, pci_channel_io_frozen);
 
@@ -227,7 +227,10 @@ static void *eeh_report_error(void *data
 	if (*res == PCI_ERS_RESULT_NONE) *res = rc;
 
 	edev->in_error = true;
+out:
 	eeh_pcid_put(dev);
+out_no_dev:
+	device_unlock(&dev->dev);
 	return NULL;
 }
 
@@ -250,15 +253,14 @@ static void *eeh_report_mmio_enabled(voi
 	if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
 		return NULL;
 
+	device_lock(&dev->dev);
 	driver = eeh_pcid_get(dev);
-	if (!driver) return NULL;
+	if (!driver) goto out_no_dev;
 
 	if (!driver->err_handler ||
 	    !driver->err_handler->mmio_enabled ||
-	    (edev->mode & EEH_DEV_NO_HANDLER)) {
-		eeh_pcid_put(dev);
-		return NULL;
-	}
+	    (edev->mode & EEH_DEV_NO_HANDLER))
+		goto out;
 
 	rc = driver->err_handler->mmio_enabled(dev);
 
@@ -266,7 +268,10 @@ static void *eeh_report_mmio_enabled(voi
 	if (rc == PCI_ERS_RESULT_NEED_RESET) *res = rc;
 	if (*res == PCI_ERS_RESULT_NONE) *res = rc;
 
+out:
 	eeh_pcid_put(dev);
+out_no_dev:
+	device_unlock(&dev->dev);
 	return NULL;
 }
 
@@ -289,20 +294,20 @@ static void *eeh_report_reset(void *data
 
 	if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
 		return NULL;
+
+	device_lock(&dev->dev);
 	dev->error_state = pci_channel_io_normal;
 
 	driver = eeh_pcid_get(dev);
-	if (!driver) return NULL;
+	if (!driver) goto out_no_dev;
 
 	eeh_enable_irq(dev);
 
 	if (!driver->err_handler ||
 	    !driver->err_handler->slot_reset ||
 	    (edev->mode & EEH_DEV_NO_HANDLER) ||
-	    (!edev->in_error)) {
-		eeh_pcid_put(dev);
-		return NULL;
-	}
+	    (!edev->in_error))
+		goto out;
 
 	rc = driver->err_handler->slot_reset(dev);
 	if ((*res == PCI_ERS_RESULT_NONE) ||
@@ -310,7 +315,10 @@ static void *eeh_report_reset(void *data
 	if (*res == PCI_ERS_RESULT_DISCONNECT &&
 	     rc == PCI_ERS_RESULT_NEED_RESET) *res = rc;
 
+out:
 	eeh_pcid_put(dev);
+out_no_dev:
+	device_unlock(&dev->dev);
 	return NULL;
 }
 
@@ -361,10 +369,12 @@ static void *eeh_report_resume(void *dat
 
 	if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
 		return NULL;
+
+	device_lock(&dev->dev);
 	dev->error_state = pci_channel_io_normal;
 
 	driver = eeh_pcid_get(dev);
-	if (!driver) return NULL;
+	if (!driver) goto out_no_dev;
 
 	was_in_error = edev->in_error;
 	edev->in_error = false;
@@ -374,13 +384,15 @@ static void *eeh_report_resume(void *dat
 	    !driver->err_handler->resume ||
 	    (edev->mode & EEH_DEV_NO_HANDLER) || !was_in_error) {
 		edev->mode &= ~EEH_DEV_NO_HANDLER;
-		eeh_pcid_put(dev);
-		return NULL;
+		goto out;
 	}
 
 	driver->err_handler->resume(dev);
 
+out:
 	eeh_pcid_put(dev);
+out_no_dev:
+	device_unlock(&dev->dev);
 	return NULL;
 }
 
@@ -400,22 +412,25 @@ static void *eeh_report_failure(void *da
 
 	if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
 		return NULL;
+
+	device_lock(&dev->dev);
 	dev->error_state = pci_channel_io_perm_failure;
 
 	driver = eeh_pcid_get(dev);
-	if (!driver) return NULL;
+	if (!driver) goto out_no_dev;
 
 	eeh_disable_irq(dev);
 
 	if (!driver->err_handler ||
-	    !driver->err_handler->error_detected) {
-		eeh_pcid_put(dev);
-		return NULL;
-	}
+	    !driver->err_handler->error_detected)
+		goto out;
 
 	driver->err_handler->error_detected(dev, pci_channel_io_perm_failure);
 
+out:
 	eeh_pcid_put(dev);
+out_no_dev:
+	device_unlock(&dev->dev);
 	return NULL;
 }
 

[PATCH 4.14 91/91] net: dont call update_pmtu unconditionally

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

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

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

commit f15ca723c1ebe6c1a06bc95fda6b62cd87b44559 upstream.

Some dst_ops (e.g. md_dst_ops)) doesn't set this handler. It may result to:
"BUG: unable to handle kernel NULL pointer dereference at           (null)"

Let's add a helper to check if update_pmtu is available before calling it.

Fixes: 52a589d51f10 ("geneve: update skb dst pmtu on tx path")
Fixes: a93bf0ff4490 ("vxlan: update skb dst pmtu on tx path")
CC: Roman Kapl <code@rkapl.cz>
CC: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[backport to 4.14.y by thomas]
Cc: Thomas Deutschmann <whissi@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/ulp/ipoib/ipoib_cm.c |    3 +--
 drivers/net/vxlan.c                     |    6 ++----
 include/net/dst.h                       |    8 ++++++++
 net/ipv4/ip_tunnel.c                    |    3 +--
 net/ipv4/ip_vti.c                       |    2 +-
 net/ipv6/ip6_tunnel.c                   |    5 ++---
 net/ipv6/ip6_vti.c                      |    2 +-
 net/ipv6/sit.c                          |    4 ++--
 8 files changed, 18 insertions(+), 15 deletions(-)

--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -1447,8 +1447,7 @@ void ipoib_cm_skb_too_long(struct net_de
 	struct ipoib_dev_priv *priv = ipoib_priv(dev);
 	int e = skb_queue_empty(&priv->cm.skb_queue);
 
-	if (skb_dst(skb))
-		skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
+	skb_dst_update_pmtu(skb, mtu);
 
 	skb_queue_tail(&priv->cm.skb_queue, skb);
 	if (e)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2158,8 +2158,7 @@ static void vxlan_xmit_one(struct sk_buf
 		if (skb_dst(skb)) {
 			int mtu = dst_mtu(ndst) - VXLAN_HEADROOM;
 
-			skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL,
-						       skb, mtu);
+			skb_dst_update_pmtu(skb, mtu);
 		}
 
 		tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
@@ -2200,8 +2199,7 @@ static void vxlan_xmit_one(struct sk_buf
 		if (skb_dst(skb)) {
 			int mtu = dst_mtu(ndst) - VXLAN6_HEADROOM;
 
-			skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL,
-						       skb, mtu);
+			skb_dst_update_pmtu(skb, mtu);
 		}
 
 		tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -520,4 +520,12 @@ static inline struct xfrm_state *dst_xfr
 }
 #endif
 
+static inline void skb_dst_update_pmtu(struct sk_buff *skb, u32 mtu)
+{
+	struct dst_entry *dst = skb_dst(skb);
+
+	if (dst && dst->ops->update_pmtu)
+		dst->ops->update_pmtu(dst, NULL, skb, mtu);
+}
+
 #endif /* _NET_DST_H */
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -521,8 +521,7 @@ static int tnl_update_pmtu(struct net_de
 	else
 		mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
 
-	if (skb_dst(skb))
-		skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
+	skb_dst_update_pmtu(skb, mtu);
 
 	if (skb->protocol == htons(ETH_P_IP)) {
 		if (!skb_is_gso(skb) &&
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -209,7 +209,7 @@ static netdev_tx_t vti_xmit(struct sk_bu
 
 	mtu = dst_mtu(dst);
 	if (skb->len > mtu) {
-		skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
+		skb_dst_update_pmtu(skb, mtu);
 		if (skb->protocol == htons(ETH_P_IP)) {
 			icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
 				  htonl(mtu));
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -652,7 +652,7 @@ ip4ip6_err(struct sk_buff *skb, struct i
 		if (rel_info > dst_mtu(skb_dst(skb2)))
 			goto out;
 
-		skb_dst(skb2)->ops->update_pmtu(skb_dst(skb2), NULL, skb2, rel_info);
+		skb_dst_update_pmtu(skb2, rel_info);
 	}
 	if (rel_type == ICMP_REDIRECT)
 		skb_dst(skb2)->ops->redirect(skb_dst(skb2), NULL, skb2);
@@ -1141,8 +1141,7 @@ route_lookup:
 		mtu = 576;
 	}
 
-	if (skb_dst(skb) && !t->parms.collect_md)
-		skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
+	skb_dst_update_pmtu(skb, mtu);
 	if (skb->len - t->tun_hlen - eth_hlen > mtu && !skb_is_gso(skb)) {
 		*pmtu = mtu;
 		err = -EMSGSIZE;
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -486,7 +486,7 @@ vti6_xmit(struct sk_buff *skb, struct ne
 
 	mtu = dst_mtu(dst);
 	if (!skb->ignore_df && skb->len > mtu) {
-		skb_dst(skb)->ops->update_pmtu(dst, NULL, skb, mtu);
+		skb_dst_update_pmtu(skb, mtu);
 
 		if (skb->protocol == htons(ETH_P_IPV6)) {
 			if (mtu < IPV6_MIN_MTU)
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -925,8 +925,8 @@ static netdev_tx_t ipip6_tunnel_xmit(str
 			df = 0;
 		}
 
-		if (tunnel->parms.iph.daddr && skb_dst(skb))
-			skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
+		if (tunnel->parms.iph.daddr)
+			skb_dst_update_pmtu(skb, mtu);
 
 		if (skb->len > mtu && !skb_is_gso(skb)) {
 			icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);

Re: [PATCH 4.14 00/91] 4.14.39-stable review

[Nathan Chancellor]

On Mon, Apr 30, 2018 at 12:23:42PM -0700, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.14.39 release.
> There are 91 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed May  2 18:39:37 UTC 2018.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.39-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

Merged, compiled, and installed onto my Raspberry Pi 3.

No initial issues in dmesg or general usage.

Thanks!
Nathan

Re: [PATCH 4.14 00/91] 4.14.39-stable review

[kernelci.org bot]

stable-rc/linux-4.14.y boot: 144 boots: 2 failed, 134 passed with 5 offline, 1 untried/unknown, 2 conflicts (v4.14.38-92-gee90ac924864)

Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.14.y/kernel/v4.14.38-92-gee90ac924864/
Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.14.y/kernel/v4.14.38-92-gee90ac924864/

Tree: stable-rc
Branch: linux-4.14.y
Git Describe: v4.14.38-92-gee90ac924864
Git Commit: ee90ac9248644db2ff37da8407d08e751813d532
Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
Tested: 77 unique boards, 23 SoC families, 17 builds out of 185

Boot Regressions Detected:

arm:

    at91_dt_defconfig:
        at91sam9x35ek:
            lab-free-electrons: new failure (last pass: v4.14.38)

    multi_v7_defconfig:
        at91-sama5d4_xplained:
            lab-free-electrons: new failure (last pass: v4.14.38)
        sun8i-a83t-allwinner-h8homlet-v2:
            lab-free-electrons: new failure (last pass: v4.14.38)

x86:

    x86_64_defconfig:
        qemu:
            lab-collabora: new failure (last pass: v4.14.38)

Boot Failures Detected:

arm:

    at91_dt_defconfig
        at91sam9x35ek: 1 failed lab

    multi_v7_defconfig
        sun8i-a83t-allwinner-h8homlet-v2: 1 failed lab

Offline Platforms:

arm:

    multi_v7_defconfig:
        qcom-apq8064-cm-qs600: 1 offline lab
        qcom-apq8064-ifc6410: 1 offline lab

    qcom_defconfig:
        qcom-apq8064-cm-qs600: 1 offline lab
        qcom-apq8064-ifc6410: 1 offline lab

arm64:

    defconfig:
        apq8016-sbc: 1 offline lab

Conflicting Boot Failures Detected: (These likely are not failures as other labs are reporting PASS. Needs review.)

arm:

    multi_v7_defconfig:
        at91-sama5d4_xplained:
            lab-free-electrons: FAIL
            lab-baylibre-seattle: PASS

x86:

    x86_64_defconfig:
        qemu:
            lab-collabora: FAIL
            lab-linaro-lkft: PASS
            lab-mhart: PASS

---
For more info write to <info@kernelci.org>

Re: [PATCH 4.14 00/91] 4.14.39-stable review

[Guenter Roeck]

On 04/30/2018 12:23 PM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.14.39 release.
> There are 91 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed May  2 18:39:37 UTC 2018.
> Anything received after that time might be too late.
> 
Build results:
	total: 146 pass: 146 fail: 0
Qemu test results:
	total: 141 pass: 141 fail: 0

Details are available at http://kerneltests.org/builders.

Guenter

Re: [PATCH 4.14 00/91] 4.14.39-stable review

[Dan Rue]

On Mon, Apr 30, 2018 at 12:23:42PM -0700, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.14.39 release.
> There are 91 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed May  2 18:39:37 UTC 2018.
> Anything received after that time might be too late.

Results from Linaro’s test farm.
No regressions on arm64, arm and x86_64.

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

kernel: 4.14.39-rc1
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git branch: linux-4.14.y
git commit: ee90ac9248644db2ff37da8407d08e751813d532
git describe: v4.14.38-92-gee90ac924864
Test details: https://qa-reports.linaro.org/lkft/linux-stable-rc-4.14-oe/build/v4.14.38-92-gee90ac924864


No regressions (compared to build v4.14.38)

Boards, architectures and test suites:
-------------------------------------

dragonboard-410c
* boot - pass: 20,
* kselftest - skip: 27, pass: 41,
* libhugetlbfs - skip: 1, pass: 90,
* ltp-cap_bounds-tests - pass: 2,
* ltp-containers-tests - skip: 17, pass: 64,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs-tests - skip: 6, pass: 57,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-fsx-tests - pass: 2,
* ltp-hugetlb-tests - skip: 1, pass: 21,
* ltp-io-tests - pass: 3,
* ltp-ipc-tests - pass: 9,
* ltp-math-tests - pass: 11,
* ltp-nptl-tests - pass: 2,
* ltp-pty-tests - pass: 4,
* ltp-sched-tests - pass: 14,
* ltp-securebits-tests - pass: 4,
* ltp-syscalls-tests - skip: 134, pass: 1016,
* ltp-timers-tests - pass: 13,

hi6220-hikey - arm64
* boot - pass: 20,
* kselftest - skip: 23, pass: 44,
* libhugetlbfs - skip: 1, pass: 90,
* ltp-cap_bounds-tests - pass: 2,
* ltp-containers-tests - skip: 17, pass: 64,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs-tests - skip: 6, pass: 57,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-fsx-tests - pass: 2,
* ltp-hugetlb-tests - skip: 1, pass: 21,
* ltp-io-tests - pass: 3,
* ltp-ipc-tests - pass: 9,
* ltp-math-tests - pass: 11,
* ltp-nptl-tests - pass: 2,
* ltp-pty-tests - pass: 4,
* ltp-sched-tests - skip: 4, pass: 10,
* ltp-securebits-tests - pass: 4,
* ltp-syscalls-tests - skip: 135, pass: 1015,
* ltp-timers-tests - pass: 13,

juno-r2 - arm64
* boot - pass: 20,
* kselftest - skip: 25, pass: 43,
* libhugetlbfs - skip: 1, pass: 90,
* ltp-cap_bounds-tests - pass: 2,
* ltp-containers-tests - skip: 17, pass: 64,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs-tests - skip: 6, pass: 57,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-hugetlb-tests - pass: 22,
* ltp-ipc-tests - pass: 9,
* ltp-math-tests - pass: 11,
* ltp-nptl-tests - pass: 2,
* ltp-sched-tests - skip: 4, pass: 10,
* ltp-securebits-tests - pass: 4,
* ltp-syscalls-tests - skip: 134, pass: 1016,
* ltp-timers-tests - pass: 13,

qemu_arm
* boot - pass: 14, fail: 6
* libhugetlbfs - pass: 1,
* ltp-cap_bounds-tests - pass: 2,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-hugetlb-tests - skip: 1, pass: 21,
* ltp-ipc-tests - pass: 9,
* ltp-pty-tests - pass: 4,
* ltp-sched-tests - skip: 7, pass: 7,
* ltp-securebits-tests - pass: 4,
* ltp-timers-tests - pass: 13,

qemu_arm64
* boot - pass: 19, fail: 1
* kselftest - skip: 29, pass: 41,
* libhugetlbfs - skip: 1, pass: 90,
* ltp-containers-tests - skip: 17, pass: 64,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs-tests - skip: 6, pass: 57,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-fsx-tests - pass: 2,
* ltp-hugetlb-tests - pass: 22,
* ltp-io-tests - pass: 3,
* ltp-ipc-tests - pass: 9,
* ltp-nptl-tests - pass: 2,
* ltp-pty-tests - pass: 4,
* ltp-sched-tests - skip: 6, pass: 8,
* ltp-securebits-tests - pass: 4,
* ltp-syscalls-tests - skip: 156, pass: 992, fail: 2
* ltp-timers-tests - pass: 13,

qemu_x86_64
* boot - pass: 22,
* kselftest - skip: 30, pass: 50,
* kselftest-vsyscall-mode-native - skip: 30, pass: 50,
* kselftest-vsyscall-mode-none - skip: 30, pass: 50,
* libhugetlbfs - skip: 1, pass: 90,
* ltp-cap_bounds-tests - pass: 2,
* ltp-containers-tests - skip: 17, pass: 64,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs-tests - skip: 6, pass: 57,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-fsx-tests - pass: 2,
* ltp-hugetlb-tests - pass: 22,
* ltp-io-tests - pass: 3,
* ltp-ipc-tests - pass: 9,
* ltp-math-tests - pass: 11,
* ltp-nptl-tests - pass: 2,
* ltp-pty-tests - pass: 4,
* ltp-sched-tests - skip: 1, pass: 13,
* ltp-securebits-tests - pass: 4,
* ltp-syscalls-tests - skip: 152, pass: 998,
* ltp-timers-tests - pass: 13,

x15 - arm
* boot - pass: 20,
* kselftest - skip: 26, pass: 37, fail: 2
* libhugetlbfs - skip: 1, pass: 87,
* ltp-cap_bounds-tests - pass: 2,
* ltp-containers-tests - skip: 18, pass: 63,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs-tests - skip: 5, pass: 58,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-fsx-tests - pass: 2,
* ltp-hugetlb-tests - skip: 2, pass: 20,
* ltp-io-tests - pass: 3,
* ltp-ipc-tests - pass: 9,
* ltp-math-tests - pass: 11,
* ltp-nptl-tests - pass: 2,
* ltp-pty-tests - pass: 4,
* ltp-sched-tests - skip: 1, pass: 13,
* ltp-securebits-tests - pass: 4,
* ltp-syscalls-tests - skip: 75, pass: 1075,
* ltp-timers-tests - pass: 13,

x86_64
* boot - pass: 22,
* kselftest - skip: 22, pass: 53,
* kselftest-vsyscall-mode-native - skip: 22, pass: 53, fail: 1
* kselftest-vsyscall-mode-none - skip: 22, pass: 54,
* libhugetlbfs - skip: 1, pass: 90,
* ltp-cap_bounds-tests - pass: 2,
* ltp-containers-tests - skip: 17, pass: 64,
* ltp-fcntl-locktests-tests - pass: 2,
* ltp-filecaps-tests - pass: 2,
* ltp-fs-tests - skip: 5, pass: 58,
* ltp-fs_bind-tests - pass: 2,
* ltp-fs_perms_simple-tests - pass: 19,
* ltp-fsx-tests - pass: 2,
* ltp-hugetlb-tests - pass: 22,
* ltp-io-tests - pass: 3,
* ltp-ipc-tests - pass: 9,
* ltp-math-tests - pass: 11,
* ltp-nptl-tests - pass: 2,
* ltp-pty-tests - pass: 4,
* ltp-sched-tests - skip: 5, pass: 9,
* ltp-securebits-tests - pass: 4,
* ltp-syscalls-tests - skip: 116, pass: 1034,
* ltp-timers-tests - pass: 13,

-- 
Linaro QA (BETA)
https://qa-reports.linaro.org

Re: [PATCH 4.14 00/91] 4.14.39-stable review

[Shuah Khan]

On 04/30/2018 01:23 PM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.14.39 release.
> There are 91 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed May  2 18:39:37 UTC 2018.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.39-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

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

thanks,
-- Shuah