723188 Commits

Author SHA1 Message Date
Arnd Bergmann
2e3f1f153b compat_ioctl: handle SIOCOUTQNSD
commit 9d7bf41fafa5b5ddd4c13eb39446b0045f0a8167 upstream.

Unlike the normal SIOCOUTQ, SIOCOUTQNSD was never handled in compat
mode. Add it to the common socket compat handler along with similar
ones.

Fixes: 2f4e1b397097 ("tcp: ioctl type SIOCOUTQNSD returns amount of data not sent")
Cc: Eric Dumazet <edumazet@google.com>
Cc: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:49 +01:00
Arnd Bergmann
6b24f8fa8f af_unix: add compat_ioctl support
commit 5f6beb9e0f633f3cc845cdd67973c506372931b4 upstream.

The af_unix protocol family has a custom ioctl command (inexplicibly
based on SIOCPROTOPRIVATE), but never had a compat_ioctl handler for
32-bit applications.

Since all commands are compatible here, add a trivial wrapper that
performs the compat_ptr() conversion for SIOCOUTQ/SIOCINQ.  SIOCUNIXFILE
does not use the argument, but it doesn't hurt to also use compat_ptr()
here.

Fixes: ba94f3088b79 ("unix: add ioctl to open a unix socket file with O_PATH")
Cc: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:49 +01:00
Loic Poulain
d76a733886 arm64: dts: apq8096-db820c: Increase load on l21 for SDCARD
commit e38161bd325ea541ef2f258d8e28281077dde524 upstream.

In the same way as for msm8974-hammerhead, l21 load, used for SDCARD
VMMC, needs to be increased in order to prevent any voltage drop issues
(due to limited current) happening with some SDCARDS or during specific
operations (e.g. write).

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Fixes: 660a9763c6a9 (arm64: dts: qcom: db820c: Add pm8994 regulator node)
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:49 +01:00
Arnd Bergmann
e35d296079 scsi: sd: enable compat ioctls for sed-opal
commit 142b2ac82e31c174936c5719fa12ae28f51a55b7 upstream.

The sed_ioctl() function is written to be compatible between
32-bit and 64-bit processes, however compat mode is only
wired up for nvme, not for sd.

Add the missing call to sed_ioctl() in sd_compat_ioctl().

Fixes: d80210f25ff0 ("sd: add support for TCG OPAL self encrypting disks")
Cc: linux-scsi@vger.kernel.org
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:49 +01:00
Andy Shevchenko
6cce9e0bae pinctrl: lewisburg: Update pin list according to v1.1v6
commit e66ff71fd0dba36a53f91f39e4da6c7b84764f2e upstream.

Version 1.1v6 of pin list has some changes in pin names for Intel Lewisburg.

Update the driver accordingly.

Note, it reveals the bug in the driver that misses two pins in GPP_L and
has rather two extra ones. That's why the ordering of some groups is changed.

Fixes: e480b745386e ("pinctrl: intel: Add Intel Lewisburg GPIO support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20191120133739.54332-1-andriy.shevchenko@linux.intel.com
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:49 +01:00
Colin Ian King
736af028ae pinctl: ti: iodelay: fix error checking on pinctrl_count_index_with_args call
commit 5ff8aca906f3a7a7db79fad92f2a4401107ef50d upstream.

The call to pinctrl_count_index_with_args checks for a -EINVAL return
however this function calls pinctrl_get_list_and_count and this can
return -ENOENT. Rather than check for a specific error, fix this by
checking for any error return to catch the -ENOENT case.

Addresses-Coverity: ("Improper use of negative")
Fixes: 003910ebc83b ("pinctrl: Introduce TI IOdelay configuration driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190920122030.14340-1-colin.king@canonical.com
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:48 +01:00
Marian Mihailescu
d0b8398468 clk: samsung: exynos5420: Preserve CPU clocks configuration during suspend/resume
commit e21be0d1d7bd7f78a77613f6bcb6965e72b22fc1 upstream.

Save and restore top PLL related configuration registers for big (APLL)
and LITTLE (KPLL) cores during suspend/resume cycle. So far, CPU clocks
were reset to default values after suspend/resume cycle and performance
after system resume was affected when performance governor has been selected.

Fixes: 773424326b51 ("clk: samsung: exynos5420: add more registers to restore list")
Signed-off-by: Marian Mihailescu <mihailescu2m@gmail.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:48 +01:00
Alexander Usyskin
7e1a1d6e41 mei: fix modalias documentation
commit 73668309215285366c433489de70d31362987be9 upstream.

mei client bus added the client protocol version to the device alias,
but ABI documentation was not updated.

Fixes: b26864cad1c9 (mei: bus: add client protocol version to the device alias)
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20191008005735.12707-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:48 +01:00
Alexandru Ardelean
9d9aee7be0 iio: imu: adis16480: assign bias value only if operation succeeded
commit 9b742763d9d4195e823ae6ece760c9ed0500c1dc upstream.

This was found only after the whole thing with the inline functions, but
the compiler actually found something. The value of the `bias` (in
adis16480_get_calibbias()) should only be set if the read operation was
successful.

No actual known problem occurs as users of this function all
ultimately check the return value.  Hence probably not stable material.

Fixes: 2f3abe6cbb6c9 ("iio:imu: Add support for the ADIS16480 and similar IMUs")
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:48 +01:00
Trond Myklebust
34ed0dfdd8 NFSv4.x: Drop the slot if nfs4_delegreturn_prepare waits for layoutreturn
commit 5326de9e94bedcf7366e7e7625d4deb8c1f1ca8a upstream.

If nfs4_delegreturn_prepare needs to wait for a layoutreturn to complete
then make sure we drop the sequence slot if we hold it.

Fixes: 1c5bd76d17cc ("pNFS: Enable layoutreturn operation for return-on-close")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:48 +01:00
Chuck Lever
760e1a2e4d xprtrdma: Fix completion wait during device removal
commit 13cb886c591f341a8759f175292ddf978ef903a1 upstream.

I've found that on occasion, "rmmod <dev>" will hang while if an NFS
is under load.

Ensure that ri_remove_done is initialized only just before the
transport is woken up to force a close. This avoids the completion
possibly getting initialized again while the CM event handler is
waiting for a wake-up.

Fixes: bebd031866ca ("xprtrdma: Support unplugging an HCA from under an NFS mount")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:47 +01:00
Jian-Hong Pan
c2d4a986f9 platform/x86: asus-wmi: Fix keyboard brightness cannot be set to 0
commit 176a7fca81c5090a7240664e3002c106d296bf31 upstream.

Some of ASUS laptops like UX431FL keyboard backlight cannot be set to
brightness 0. According to ASUS' information, the brightness should be
0x80 ~ 0x83. This patch fixes it by following the logic.

Fixes: e9809c0b9670 ("asus-wmi: add keyboard backlight support")
Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com>
Reviewed-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:47 +01:00
Xiang Chen
c301a4e965 scsi: sd: Clear sdkp->protection_type if disk is reformatted without PI
commit 465f4edaecc6c37f81349233e84d46246bcac11a upstream.

If an attached disk with protection information enabled is reformatted
to Type 0 the revalidation code does not clear the original protection
type and subsequent accesses will keep setting RDPROTECT/WRPROTECT.

Set the protection type to 0 if the disk reports PROT_EN=0 in READ
CAPACITY(16).

[mkp: commit desc]

Fixes: fe542396da73 ("[SCSI] sd: Ensure we correctly disable devices with unknown protection type")
Link: https://lore.kernel.org/r/1578532344-101668-1-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:47 +01:00
James Bottomley
e3258fc2fc scsi: enclosure: Fix stale device oops with hot replug
commit 529244bd1afc102ab164429d338d310d5d65e60d upstream.

Doing an add/remove/add on a SCSI device in an enclosure leads to an oops
caused by poisoned values in the enclosure device list pointers.  The
reason is because we are keeping the enclosure device across the enclosed
device add/remove/add but the current code is doing a
device_add/device_del/device_add on it.  This is the wrong thing to do in
sysfs, so fix it by not doing a device_del on the enclosure device simply
because of a hot remove of the drive in the slot.

[mkp: added missing email addresses]

Fixes: 43d8eb9cfd0a ("[SCSI] ses: add support for enclosure component hot removal")
Link: https://lore.kernel.org/r/1578532892.3852.10.camel@HansenPartnership.com
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reported-by: Luo Jiaxing <luojiaxing@huawei.com>
Tested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:47 +01:00
Dirk Mueller
87973b2855 arm64: Check for errata before evaluating cpu features
commit dc0e36581eb2da1aa3c63ceeff0f10ef1e899b2a upstream.

Since commit d3aec8a28be3b8 ("arm64: capabilities: Restrict KPTI
detection to boot-time CPUs") we rely on errata flags being already
populated during feature enumeration. The order of errata and
features was flipped as part of commit ed478b3f9e4a ("arm64:
capabilities: Group handling of features and errata workarounds").

Return to the orginal order of errata and feature evaluation to
ensure errata flags are present during feature evaluation.

Fixes: ed478b3f9e4a ("arm64: capabilities: Group handling of
    features and errata workarounds")
CC: Suzuki K Poulose <suzuki.poulose@arm.com>
CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Dirk Mueller <dmueller@suse.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:46 +01:00
Mark Rutland
a97fdbf0f2 arm64: add sentinel to kpti_safe_list
commit 71c751f2a43fa03fae3cf5f0067ed3001a397013 upstream.

We're missing a sentinel entry in kpti_safe_list. Thus is_midr_in_range_list()
can walk past the end of kpti_safe_list. Depending on the contents of memory,
this could erroneously match a CPU's MIDR, cause a data abort, or other bad
outcomes.

Add the sentinel entry to avoid this.

Fixes: be5b299830c63ed7 ("arm64: capabilities: Add support for checks based on a list of MIDRs")
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Tested-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:46 +01:00
Bart Van Assche
56614548ff RDMA/srpt: Report the SCSI residual to the initiator
commit e88982ad1bb12db699de96fbc07096359ef6176c upstream.

The code added by this patch is similar to the code that already exists in
ibmvscsis_determine_resid(). This patch has been tested by running the
following command:

strace sg_raw -r 1k /dev/sdb 12 00 00 00 60 00 -o inquiry.bin |&
    grep resid=

Link: https://lore.kernel.org/r/20191105214632.183302-1-bvanassche@acm.org
Fixes: a42d985bd5b2 ("ib_srpt: Initial SRP Target merge for v3.3-rc1")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Honggang Li <honli@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:46 +01:00
Leon Romanovsky
4dbdf3e7c2 RDMA/mlx5: Return proper error value
commit 546d30099ed204792083f043cd7e016de86016a3 upstream.

Returned value from mlx5_mr_cache_alloc() is checked to be error or real
pointer. Return proper error code instead of NULL which is not checked
later.

Fixes: 81713d3788d2 ("IB/mlx5: Add implicit MR support")
Link: https://lore.kernel.org/r/20191029055721.7192-1-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:46 +01:00
Goldwyn Rodrigues
f04fb20253 btrfs: simplify inode locking for RWF_NOWAIT
commit 9cf35f673583ccc9f3e2507498b3079d56614ad3 upstream.

This is similar to 942491c9e6d6 ("xfs: fix AIM7 regression"). Apparently
our current rwsem code doesn't like doing the trylock, then lock for
real scheme. This causes extra contention on the lock and can be
measured eg. by AIM7 benchmark.  So change our read/write methods to
just do the trylock for the RWF_NOWAIT case.

Fixes: edf064e7c6fe ("btrfs: nowait aio support")
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:46 +01:00
Nathan Chancellor
7ffb1ac23f cifs: Adjust indentation in smb2_open_file
commit 7935799e041ae10d380d04ea23868240f082bd11 upstream.

Clang warns:

../fs/cifs/smb2file.c:70:3: warning: misleading indentation; statement
is not part of the previous 'if' [-Wmisleading-indentation]
         if (oparms->tcon->use_resilient) {
         ^
../fs/cifs/smb2file.c:66:2: note: previous statement is here
        if (rc)
        ^
1 warning generated.

This warning occurs because there is a space after the tab on this line.
Remove it so that the indentation is consistent with the Linux kernel
coding style and clang no longer warns.

Fixes: 592fafe644bf ("Add resilienthandles mount parm")
Link: https://github.com/ClangBuiltLinux/linux/issues/826
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:45 +01:00
Taehee Yoo
8496401c9d hsr: reset network header when supervision frame is created
commit 3ed0a1d563903bdb4b4c36c58c4d9c1bcb23a6e6 upstream.

The supervision frame is L2 frame.
When supervision frame is created, hsr module doesn't set network header.
If tap routine is enabled, dev_queue_xmit_nit() is called and it checks
network_header. If network_header pointer wasn't set(or invalid),
it resets network_header and warns.
In order to avoid unnecessary warning message, resetting network_header
is needed.

Test commands:
    ip netns add nst
    ip link add veth0 type veth peer name veth1
    ip link add veth2 type veth peer name veth3
    ip link set veth1 netns nst
    ip link set veth3 netns nst
    ip link set veth0 up
    ip link set veth2 up
    ip link add hsr0 type hsr slave1 veth0 slave2 veth2
    ip a a 192.168.100.1/24 dev hsr0
    ip link set hsr0 up
    ip netns exec nst ip link set veth1 up
    ip netns exec nst ip link set veth3 up
    ip netns exec nst ip link add hsr1 type hsr slave1 veth1 slave2 veth3
    ip netns exec nst ip a a 192.168.100.2/24 dev hsr1
    ip netns exec nst ip link set hsr1 up
    tcpdump -nei veth0

Splat looks like:
[  175.852292][    C3] protocol 88fb is buggy, dev veth0

Fixes: f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:45 +01:00
Geert Uytterhoeven
5371360dd2 gpio: Fix error message on out-of-range GPIO in lookup table
commit d935bd50dd14a7714cbdba9a76435dbb56edb1ae upstream.

When a GPIO offset in a lookup table is out-of-range, the printed error
message (1) does not include the actual out-of-range value, and (2)
contains an off-by-one error in the upper bound.

Avoid user confusion by also printing the actual GPIO offset, and
correcting the upper bound of the range.
While at it, use "%u" for unsigned int.

Sample impact:

    -requested GPIO 0 is out of range [0..32] for chip e6052000.gpio
    +requested GPIO 0 (45) is out of range [0..31] for chip e6052000.gpio

Fixes: 2a3cf6a3599e9015 ("gpiolib: return -ENOENT if no GPIO mapping exists")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20191127095919.4214-1-geert+renesas@glider.be
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:45 +01:00
Jon Derrick
1ef9c81097 iommu: Remove device link to group on failure
commit 7d4e6ccd1fb09dbfbc49746ca82bd5c25ad4bfe4 upstream.

This adds the missing teardown step that removes the device link from
the group when the device addition fails.

Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Fixes: 797a8b4d768c5 ("iommu: Handle default domain attach failure")
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:45 +01:00
Swapna Manupati
a5eedf4e6b gpio: zynq: Fix for bug in zynq_gpio_restore_context API
commit 36f2e7207f21a83ca0054116191f119ac64583ab upstream.

This patch writes the inverse value of Interrupt Mask Status
register into the Interrupt Enable register in
zynq_gpio_restore_context API to fix the bug.

Fixes: e11de4de28c0 ("gpio: zynq: Add support for suspend resume")
Signed-off-by: Swapna Manupati <swapna.manupati@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Link: https://lore.kernel.org/r/1577362338-28744-2-git-send-email-srinivas.neeli@xilinx.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:45 +01:00
Olivier Moysan
3b3c9bfa06 ASoC: stm32: spdifrx: fix race condition in irq handler
commit 86e1956af4c863d653136fd6e5694adf2054dbaa upstream.

When snd_pcm_stop() is called in interrupt routine,
substream context may have already been released.
Add protection on substream context.

Fixes: 03e4d5d56fa5 ("ASoC: stm32: Add SPDIFRX support")

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Link: https://lore.kernel.org/r/20191204154333.7152-3-olivier.moysan@st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:44 +01:00
Olivier Moysan
42182bcccd ASoC: stm32: spdifrx: fix inconsistent lock state
commit 2859b1784031b5709446af8f6039c467f136e67d upstream.

In current spdifrx driver locks may be requested as follows:
- request lock on iec capture control, when starting synchronization.
- request lock in interrupt context, when spdifrx stop is called
from IRQ handler.

Take lock with IRQs disabled, to avoid the possible deadlock.

Lockdep report:
[   74.278059] ================================
[   74.282306] WARNING: inconsistent lock state
[   74.290120] --------------------------------
...
[   74.314373]        CPU0
[   74.314377]        ----
[   74.314381]   lock(&(&spdifrx->lock)->rlock);
[   74.314396]   <Interrupt>
[   74.314400]     lock(&(&spdifrx->lock)->rlock);

Fixes: 03e4d5d56fa5 ("ASoC: stm32: Add SPDIFRX support")

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Link: https://lore.kernel.org/r/20191204154333.7152-2-olivier.moysan@st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:44 +01:00
Selvin Xavier
d070b8d570 RDMA/bnxt_re: Fix Send Work Entry state check while polling completions
commit c5275723580922e5f3264f96751337661a153c7d upstream.

Some adapters need a fence Work Entry to handle retransmission.  Currently
the driver checks for this condition, only if the Send queue entry is
signalled. Implement the condition check, irrespective of the signalled
state of the Work queue entries

Failure to add the fence can result in access to memory that is already
marked as completed, triggering data corruption, transmission failure,
IOMMU failures, etc.

Fixes: 9152e0b722b2 ("RDMA/bnxt_re: HW workarounds for handling specific conditions")
Link: https://lore.kernel.org/r/1574671174-5064-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:44 +01:00
Ran Bi
f1545409a5 rtc: mt6397: fix alarm register overwrite
commit 653997eeecef95c3ead4fba1b2d27e6a5854d6cd upstream.

Alarm registers high byte was reserved for other functions.
This add mask in alarm registers operation functions.
This also fix error condition in interrupt handler.

Fixes: fc2979118f3f ("rtc: mediatek: Add MT6397 RTC driver")

Signed-off-by: Ran Bi <ran.bi@mediatek.com>
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Link: https://lore.kernel.org/r/1576057435-3561-6-git-send-email-hsin-hsiung.wang@mediatek.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:44 +01:00
Tyler Hicks
573e1fe003 drm/i915: Fix use-after-free when destroying GEM context
This patch is a simplified fix to address a use-after-free in 4.14.x and
4.19.x stable kernels. The flaw is already fixed upstream, starting in
5.2, by commit 7dc40713618c ("drm/i915: Introduce a mutex for
file_priv->context_idr") as part of a more complex patch series that
isn't appropriate for backporting to stable kernels.

Expand mutex coverage, while destroying the GEM context, to include the
GEM context lookup step. This fixes a use-after-free detected by KASAN:

 ==================================================================
 BUG: KASAN: use-after-free in i915_ppgtt_close+0x2ca/0x2f0
 Write of size 1 at addr ffff8881368a8368 by task i915-poc/3124

 CPU: 0 PID: 3124 Comm: i915-poc Not tainted 4.14.164 #1
 Hardware name: HP HP Elite x2 1012 G1 /80FC, BIOS N85 Ver. 01.20 04/05/2017
 Call Trace:
  dump_stack+0xcd/0x12e
  ? _atomic_dec_and_lock+0x1b2/0x1b2
  ? i915_ppgtt_close+0x2ca/0x2f0
  ? printk+0x8f/0xab
  ? show_regs_print_info+0x53/0x53
  ? i915_ppgtt_close+0x2ca/0x2f0
  print_address_description+0x65/0x270
  ? i915_ppgtt_close+0x2ca/0x2f0
  kasan_report+0x251/0x340
  i915_ppgtt_close+0x2ca/0x2f0
  ? __radix_tree_insert+0x3f0/0x3f0
  ? i915_ppgtt_init_hw+0x7c0/0x7c0
  context_close+0x42e/0x680
  ? i915_gem_context_release+0x230/0x230
  ? kasan_kmalloc+0xa0/0xd0
  ? radix_tree_delete_item+0x1d4/0x250
  ? radix_tree_lookup+0x10/0x10
  ? inet_recvmsg+0x4b0/0x4b0
  ? kasan_slab_free+0x88/0xc0
  i915_gem_context_destroy_ioctl+0x236/0x300
  ? i915_gem_context_create_ioctl+0x360/0x360
  ? drm_dev_printk+0x1d0/0x1d0
  ? memcpy+0x34/0x50
  ? i915_gem_context_create_ioctl+0x360/0x360
  drm_ioctl_kernel+0x1b0/0x2b0
  ? drm_ioctl_permit+0x2a0/0x2a0
  ? avc_ss_reset+0xd0/0xd0
  drm_ioctl+0x6fe/0xa20
  ? i915_gem_context_create_ioctl+0x360/0x360
  ? drm_getstats+0x20/0x20
  ? put_unused_fd+0x260/0x260
  do_vfs_ioctl+0x189/0x12d0
  ? ioctl_preallocate+0x280/0x280
  ? selinux_file_ioctl+0x3a7/0x680
  ? selinux_bprm_set_creds+0xe30/0xe30
  ? security_file_ioctl+0x69/0xa0
  ? selinux_bprm_set_creds+0xe30/0xe30
  SyS_ioctl+0x6f/0x80
  ? __sys_sendmmsg+0x4a0/0x4a0
  ? do_vfs_ioctl+0x12d0/0x12d0
  do_syscall_64+0x214/0x5f0
  ? __switch_to_asm+0x31/0x60
  ? __switch_to_asm+0x25/0x60
  ? __switch_to_asm+0x31/0x60
  ? syscall_return_slowpath+0x2c0/0x2c0
  ? copy_overflow+0x20/0x20
  ? __switch_to_asm+0x25/0x60
  ? syscall_return_via_sysret+0x2a/0x7a
  ? prepare_exit_to_usermode+0x200/0x200
  ? __switch_to_asm+0x31/0x60
  ? __switch_to_asm+0x31/0x60
  ? __switch_to_asm+0x25/0x60
  ? __switch_to_asm+0x25/0x60
  ? __switch_to_asm+0x31/0x60
  ? __switch_to_asm+0x25/0x60
  ? __switch_to_asm+0x31/0x60
  ? __switch_to_asm+0x31/0x60
  ? __switch_to_asm+0x25/0x60
  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
 RIP: 0033:0x7f7fda5115d7
 RSP: 002b:00007f7eec317ec8 EFLAGS: 00000286 ORIG_RAX: 0000000000000010
 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7fda5115d7
 RDX: 000055b306db9188 RSI: 000000004008646e RDI: 0000000000000003
 RBP: 00007f7eec317ef0 R08: 00007f7eec318700 R09: 0000000000000000
 R10: 0000000000000000 R11: 0000000000000286 R12: 00007f7eec317fc0
 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffd8007ade0

 Allocated by task 2898:
  save_stack+0x32/0xb0
  kasan_kmalloc+0xa0/0xd0
  kmem_cache_alloc_trace+0x5e/0x180
  i915_ppgtt_create+0xab/0x2510
  i915_gem_create_context+0x981/0xf90
  i915_gem_context_create_ioctl+0x1d7/0x360
  drm_ioctl_kernel+0x1b0/0x2b0
  drm_ioctl+0x6fe/0xa20
  do_vfs_ioctl+0x189/0x12d0
  SyS_ioctl+0x6f/0x80
  do_syscall_64+0x214/0x5f0
  entry_SYSCALL_64_after_hwframe+0x3d/0xa2

 Freed by task 104:
  save_stack+0x32/0xb0
  kasan_slab_free+0x72/0xc0
  kfree+0x88/0x190
  i915_ppgtt_release+0x24e/0x460
  i915_gem_context_free+0x90/0x480
  contexts_free_worker+0x54/0x80
  process_one_work+0x876/0x14e0
  worker_thread+0x1b8/0xfd0
  kthread+0x2f8/0x3c0
  ret_from_fork+0x35/0x40

 The buggy address belongs to the object at ffff8881368a8000
  which belongs to the cache kmalloc-8192 of size 8192
 The buggy address is located 872 bytes inside of
  8192-byte region [ffff8881368a8000, ffff8881368aa000)
 The buggy address belongs to the page:
 page:ffffea0004da2a00 count:1 mapcount:0 mapping:          (null) index:0x0 compound_mapcount: 0
 flags: 0x200000000008100(slab|head)
 raw: 0200000000008100 0000000000000000 0000000000000000 0000000100030003
 raw: dead000000000100 dead000000000200 ffff88822a002280 0000000000000000
 page dumped because: kasan: bad access detected

 Memory state around the buggy address:
  ffff8881368a8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ffff8881368a8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 >ffff8881368a8300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                           ^
  ffff8881368a8380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ffff8881368a8400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ==================================================================

Fixes: 1acfc104cdf8 ("drm/i915: Enable rcu-only context lookups")
Reported-by: 罗权 <luoquan@qianxin.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jon Bloomfield <jon.bloomfield@intel.com>
Cc: stable@vger.kernel.org # 4.14.x
Cc: stable@vger.kernel.org # 4.19.x
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:43 +01:00
YueHaibing
d0c15c1e8f dccp: Fix memleak in __feat_register_sp
commit 1d3ff0950e2b40dc861b1739029649d03f591820 upstream.

If dccp_feat_push_change fails, we forget free the mem
which is alloced by kmemdup in dccp_feat_clone_sp_val.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: e8ef967a54f4 ("dccp: Registration routines for changing feature values")
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:43 +01:00
Navid Emamdoost
db1fb5a397 iwlwifi: dbg_ini: fix memory leak in alloc_sgtable
commit b4b814fec1a5a849383f7b3886b654a13abbda7d upstream.

In alloc_sgtable if alloc_page fails, the alocated table should be
released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:43 +01:00
Navid Emamdoost
67a8c1b6bc wimax: i2400: Fix memory leak in i2400m_op_rfkill_sw_toggle
commit 6f3ef5c25cc762687a7341c18cbea5af54461407 upstream.

In the implementation of i2400m_op_rfkill_sw_toggle() the allocated
buffer for cmd should be released before returning. The
documentation for i2400m_msg_to_dev() says when it returns the buffer
can be reused. Meaning cmd should be released in either case. Move
kfree(cmd) before return to be reached by all execution paths.

Fixes: 2507e6ab7a9a ("wimax: i2400: fix memory leak")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:43 +01:00
Navid Emamdoost
cae904fa00 wimax: i2400: fix memory leak
commit 2507e6ab7a9a440773be476141a255934468c5ef upstream.

In i2400m_op_rfkill_sw_toggle cmd buffer should be released along with
skb response.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:43 +01:00
ZhangXiaoxu
1059b758b6 cifs: Fix lease buffer length error
commit b57a55e2200ede754e4dc9cce4ba9402544b9365 upstream.

There is a KASAN slab-out-of-bounds:
BUG: KASAN: slab-out-of-bounds in _copy_from_iter_full+0x783/0xaa0
Read of size 80 at addr ffff88810c35e180 by task mount.cifs/539

CPU: 1 PID: 539 Comm: mount.cifs Not tainted 4.19 #10
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
            rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014
Call Trace:
 dump_stack+0xdd/0x12a
 print_address_description+0xa7/0x540
 kasan_report+0x1ff/0x550
 check_memory_region+0x2f1/0x310
 memcpy+0x2f/0x80
 _copy_from_iter_full+0x783/0xaa0
 tcp_sendmsg_locked+0x1840/0x4140
 tcp_sendmsg+0x37/0x60
 inet_sendmsg+0x18c/0x490
 sock_sendmsg+0xae/0x130
 smb_send_kvec+0x29c/0x520
 __smb_send_rqst+0x3ef/0xc60
 smb_send_rqst+0x25a/0x2e0
 compound_send_recv+0x9e8/0x2af0
 cifs_send_recv+0x24/0x30
 SMB2_open+0x35e/0x1620
 open_shroot+0x27b/0x490
 smb2_open_op_close+0x4e1/0x590
 smb2_query_path_info+0x2ac/0x650
 cifs_get_inode_info+0x1058/0x28f0
 cifs_root_iget+0x3bb/0xf80
 cifs_smb3_do_mount+0xe00/0x14c0
 cifs_do_mount+0x15/0x20
 mount_fs+0x5e/0x290
 vfs_kern_mount+0x88/0x460
 do_mount+0x398/0x31e0
 ksys_mount+0xc6/0x150
 __x64_sys_mount+0xea/0x190
 do_syscall_64+0x122/0x590
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

It can be reproduced by the following step:
  1. samba configured with: server max protocol = SMB2_10
  2. mount -o vers=default

When parse the mount version parameter, the 'ops' and 'vals'
was setted to smb30,  if negotiate result is smb21, just
update the 'ops' to smb21, but the 'vals' is still smb30.
When add lease context, the iov_base is allocated with smb21
ops, but the iov_len is initiallited with the smb30. Because
the iov_len is longer than iov_base, when send the message,
copy array out of bounds.

we need to keep the 'ops' and 'vals' consistent.

Fixes: 9764c02fcbad ("SMB3: Add support for multidialect negotiate (SMB2.1 and later)")
Fixes: d5c7076b772a ("smb3: add smb3.1.1 to default dialect list")

Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
[bwh: Backported to 4.14: We never switch to SMB3.1.1 here]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:42 +01:00
Vandana BN
ffe76c896f media: usb:zr364xx:Fix KASAN:null-ptr-deref Read in zr364xx_vidioc_querycap
commit 5d2e73a5f80a5b5aff3caf1ec6d39b5b3f54b26e upstream.

SyzKaller hit the null pointer deref while reading from uninitialized
udev->product in zr364xx_vidioc_querycap().

==================================================================
BUG: KASAN: null-ptr-deref in read_word_at_a_time+0xe/0x20
include/linux/compiler.h:274
Read of size 1 at addr 0000000000000000 by task v4l_id/5287

CPU: 1 PID: 5287 Comm: v4l_id Not tainted 5.1.0-rc3-319004-g43151d6 #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0xe8/0x16e lib/dump_stack.c:113
  kasan_report.cold+0x5/0x3c mm/kasan/report.c:321
  read_word_at_a_time+0xe/0x20 include/linux/compiler.h:274
  strscpy+0x8a/0x280 lib/string.c:207
  zr364xx_vidioc_querycap+0xb5/0x210 drivers/media/usb/zr364xx/zr364xx.c:706
  v4l_querycap+0x12b/0x340 drivers/media/v4l2-core/v4l2-ioctl.c:1062
  __video_do_ioctl+0x5bb/0xb40 drivers/media/v4l2-core/v4l2-ioctl.c:2874
  video_usercopy+0x44e/0xf00 drivers/media/v4l2-core/v4l2-ioctl.c:3056
  v4l2_ioctl+0x14e/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:364
  vfs_ioctl fs/ioctl.c:46 [inline]
  file_ioctl fs/ioctl.c:509 [inline]
  do_vfs_ioctl+0xced/0x12f0 fs/ioctl.c:696
  ksys_ioctl+0xa0/0xc0 fs/ioctl.c:713
  __do_sys_ioctl fs/ioctl.c:720 [inline]
  __se_sys_ioctl fs/ioctl.c:718 [inline]
  __x64_sys_ioctl+0x74/0xb0 fs/ioctl.c:718
  do_syscall_64+0xcf/0x4f0 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3b56d8b347
Code: 90 90 90 48 8b 05 f1 fa 2a 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff
ff c3 90 90 90 90 90 90 90 90 90 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 73 01 c3 48 8b 0d c1 fa 2a 00 31 d2 48 29 c2 64
RSP: 002b:00007ffe005d5d68 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3b56d8b347
RDX: 00007ffe005d5d70 RSI: 0000000080685600 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000400884
R13: 00007ffe005d5ec0 R14: 0000000000000000 R15: 0000000000000000
==================================================================

For this device udev->product is not initialized and accessing it causes a NULL pointer deref.

The fix is to check for NULL before strscpy() and copy empty string, if
product is NULL

Reported-by: syzbot+66010012fd4c531a1a96@syzkaller.appspotmail.com
Signed-off-by: Vandana BN <bnvandana@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
[bwh: Backported to 4.14: This function uses strlcpy() instead of strscpy()]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:42 +01:00
Jouni Malinen
57e1b5f6b5 mac80211: Do not send Layer 2 Update frame before authorization
commit 3e493173b7841259a08c5c8e5cbe90adb349da7e upstream.

The Layer 2 Update frame is used to update bridges when a station roams
to another AP even if that STA does not transmit any frames after the
reassociation. This behavior was described in IEEE Std 802.11F-2003 as
something that would happen based on MLME-ASSOCIATE.indication, i.e.,
before completing 4-way handshake. However, this IEEE trial-use
recommended practice document was published before RSN (IEEE Std
802.11i-2004) and as such, did not consider RSN use cases. Furthermore,
IEEE Std 802.11F-2003 was withdrawn in 2006 and as such, has not been
maintained amd should not be used anymore.

Sending out the Layer 2 Update frame immediately after association is
fine for open networks (and also when using SAE, FT protocol, or FILS
authentication when the station is actually authenticated by the time
association completes). However, it is not appropriate for cases where
RSN is used with PSK or EAP authentication since the station is actually
fully authenticated only once the 4-way handshake completes after
authentication and attackers might be able to use the unauthenticated
triggering of Layer 2 Update frame transmission to disrupt bridge
behavior.

Fix this by postponing transmission of the Layer 2 Update frame from
station entry addition to the point when the station entry is marked
authorized. Similarly, send out the VLAN binding update only if the STA
entry has already been authorized.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:42 +01:00
Dedy Lansky
b06e6e5c37 cfg80211/mac80211: make ieee80211_send_layer2_update a public function
commit 30ca1aa536211f5ac3de0173513a7a99a98a97f3 upstream.

Make ieee80211_send_layer2_update() a common function so other drivers
can re-use it.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
[bwh: Backported to 4.14 as dependency of commit 3e493173b784
 "mac80211: Do not send Layer 2 Update frame before authorization"]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:42 +01:00
Laura Abbott
4ded4a2cf5 arm64: Make sure permission updates happen for pmd/pud
commit 82034c23fcbc2389c73d97737f61fa2dd6526413 upstream.

Commit 15122ee2c515 ("arm64: Enforce BBM for huge IO/VMAP mappings")
disallowed block mappings for ioremap since that code does not honor
break-before-make. The same APIs are also used for permission updating
though and the extra checks prevent the permission updates from happening,
even though this should be permitted. This results in read-only permissions
not being fully applied. Visibly, this can occasionaly be seen as a failure
on the built in rodata test when the test data ends up in a section or
as an odd RW gap on the page table dump. Fix this by using
pgattr_change_is_safe instead of p*d_present for determining if the
change is permitted.

Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Reported-by: Peter Robinson <pbrobinson@gmail.com>
Fixes: 15122ee2c515 ("arm64: Enforce BBM for huge IO/VMAP mappings")
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:42 +01:00
Will Deacon
68a066f6ff arm64: Enforce BBM for huge IO/VMAP mappings
commit 15122ee2c515a253b0c66a3e618bc7ebe35105eb upstream.

ioremap_page_range doesn't honour break-before-make and attempts to put
down huge mappings (using p*d_set_huge) over the top of pre-existing
table entries. This leads to us leaking page table memory and also gives
rise to TLB conflicts and spurious aborts, which have been seen in
practice on Cortex-A75.

Until this has been resolved, refuse to put block mappings when the
existing entry is found to be present.

Fixes: 324420bf91f60 ("arm64: add support for ioremap() block mappings")
Reported-by: Hanjun Guo <hanjun.guo@linaro.org>
Reported-by: Lei Li <lious.lilei@hisilicon.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:41 +01:00
Ben Hutchings
9a6baa402e arm64: mm: Change page table pointer name in p[md]_set_huge()
This is preparation for the following backported fixes.  It was done
upstream as part of commit 20a004e7b017 "arm64: mm: Use
READ_ONCE/WRITE_ONCE when accessing page tables", the rest of which
does not seem suitable for stable.

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:41 +01:00
Kristina Martsenko
8cf89b9506 arm64: don't open code page table entry creation
commit 193383043f14a398393dc18bae8380f7fe665ec3 upstream.

Instead of open coding the generation of page table entries, use the
macros/functions that exist for this - pfn_p*d and p*d_populate. Most
code in the kernel already uses these macros, this patch tries to fix
up the few places that don't. This is useful for the next patch in this
series, which needs to change the page table entry logic, and it's
better to have that logic in one place.

The KVM extended ID map is special, since we're creating a level above
CONFIG_PGTABLE_LEVELS and the required function isn't available. Leave
it as is and add a comment to explain it. (The normal kernel ID map code
doesn't need this change because its page tables are created in assembly
(__create_page_tables)).

Tested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Bob Picco <bob.picco@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:41 +01:00
Sanjay Konduri
ba8bbddaa1 rsi: add fix for crash during assertions
commit abd39c6ded9db53aa44c2540092bdd5fb6590fa8 upstream.

Observed crash in some scenarios when assertion has occurred,
this is because hw structure is freed and is tried to get
accessed in some functions where null check is already
present. So, avoided the crash by making the hw to NULL after
freeing.

Signed-off-by: Sanjay Konduri <sanjay.konduri@redpinesignals.com>
Signed-off-by: Sushant Kumar Mishra <sushant.mishra@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:41 +01:00
Arnd Bergmann
f3848952e0 fs/select: avoid clang stack usage warning
commit ad312f95d41c9de19313c51e388c4984451c010f upstream.

The select() implementation is carefully tuned to put a sensible amount
of data on the stack for holding a copy of the user space fd_set, but
not too large to risk overflowing the kernel stack.

When building a 32-bit kernel with clang, we need a little more space
than with gcc, which often triggers a warning:

  fs/select.c:619:5: error: stack frame size of 1048 bytes in function 'core_sys_select' [-Werror,-Wframe-larger-than=]
  int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,

I experimentally found that for 32-bit ARM, reducing the maximum stack
usage by 64 bytes keeps us reliably under the warning limit again.

Link: http://lkml.kernel.org/r/20190307090146.1874906-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:41 +01:00
Arnd Bergmann
10dbcf14b8 ethtool: reduce stack usage with clang
commit 3499e87ea0413ee5b2cc028f4c8ed4d424bc7f98 upstream.

clang inlines the dev_ethtool() more aggressively than gcc does, leading
to a larger amount of used stack space:

net/core/ethtool.c:2536:24: error: stack frame size of 1216 bytes in function 'dev_ethtool' [-Werror,-Wframe-larger-than=]

Marking the sub-functions that require the most stack space as
noinline_for_stack gives us reasonable behavior on all compilers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17 19:45:40 +01:00
Jiri Kosina
2aaed8c188 HID: hidraw, uhid: Always report EPOLLOUT
[ Upstream commit 9e635c2851df6caee651e589fbf937b637973c91 ]

hidraw and uhid device nodes are always available for writing so we should
always report EPOLLOUT and EPOLLWRNORM bits, not only in the cases when
there is nothing to read.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: be54e7461ffdc ("HID: uhid: Fix returning EPOLLOUT from uhid_char_poll")
Fixes: 9f3b61dc1dd7b ("HID: hidraw: Fix returning EPOLLOUT from hidraw_poll")
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-17 19:45:40 +01:00
Marcel Holtmann
fa8b1126ca HID: hidraw: Fix returning EPOLLOUT from hidraw_poll
[ Upstream commit 9f3b61dc1dd7b81e99e7ed23776bb64a35f39e1a ]

When polling a connected /dev/hidrawX device, it is useful to get the
EPOLLOUT when writing is possible. Since writing is possible as soon as
the device is connected, always return it.

Right now EPOLLOUT is only returned when there are also input reports
are available. This works if devices start sending reports when
connected, but some HID devices might need an output report first before
sending any input reports. This change will allow using EPOLLOUT here as
well.

Fixes: 378b80370aa1 ("hidraw: Return EPOLLOUT from hidraw_poll")
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-17 19:45:39 +01:00
Fabian Henneke
4f9ec9a986 hidraw: Return EPOLLOUT from hidraw_poll
[ Upstream commit 378b80370aa1fe50f9c48a3ac8af3e416e73b89f ]

Always return EPOLLOUT from hidraw_poll when a device is connected.
This is safe since writes are always possible (but will always block).

hidraw does not support non-blocking writes and instead always calls
blocking backend functions on write requests. Hence, so far, a call to
poll never returned EPOLLOUT, which confuses tools like socat.

Signed-off-by: Fabian Henneke <fabian.henneke@gmail.com>
In-reply-to: <CA+hv5qkyis03CgYTWeWX9cr0my-d2Oe+aZo+mjmWRXgjrGqyrw@mail.gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-17 19:45:39 +01:00
Greg Kroah-Hartman
c04fc6fa5c Linux 4.14.165 2020-01-14 20:05:49 +01:00
Akeem G Abodunrin
39465647ed drm/i915/gen9: Clear residual context state on context switch
commit bc8a76a152c5f9ef3b48104154a65a68a8b76946 upstream.

Intel ID: PSIRT-TA-201910-001
CVEID: CVE-2019-14615

Intel GPU Hardware prior to Gen11 does not clear EU state
during a context switch. This can result in information
leakage between contexts.

For Gen8 and Gen9, hardware provides a mechanism for
fast cleardown of the EU state, by issuing a PIPE_CONTROL
with bit 27 set. We can use this in a context batch buffer
to explicitly cleardown the state on every context switch.

As this workaround is already in place for gen8, we can borrow
the code verbatim for Gen9.

Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Cc: Kumar Valsan Prathap <prathap.kumar.valsan@intel.com>
Cc: Chris Wilson <chris.p.wilson@intel.com>
Cc: Balestrieri Francesco <francesco.balestrieri@intel.com>
Cc: Bloomfield Jon <jon.bloomfield@intel.com>
Cc: Dutt Sudeep <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-14 20:05:49 +01:00
Florian Westphal
bd6d13a15a netfilter: ipset: avoid null deref when IPSET_ATTR_LINENO is present
commit 22dad713b8a5ff488e07b821195270672f486eb2 upstream.

The set uadt functions assume lineno is never NULL, but it is in
case of ip_set_utest().

syzkaller managed to generate a netlink message that calls this with
LINENO attr present:

general protection fault: 0000 [#1] PREEMPT SMP KASAN
RIP: 0010:hash_mac4_uadt+0x1bc/0x470 net/netfilter/ipset/ip_set_hash_mac.c:104
Call Trace:
 ip_set_utest+0x55b/0x890 net/netfilter/ipset/ip_set_core.c:1867
 nfnetlink_rcv_msg+0xcf2/0xfb0 net/netfilter/nfnetlink.c:229
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
 nfnetlink_rcv+0x1ba/0x460 net/netfilter/nfnetlink.c:563

pass a dummy lineno storage, its easier than patching all set
implementations.

This seems to be a day-0 bug.

Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Reported-by: syzbot+34bd2369d38707f3f4a7@syzkaller.appspotmail.com
Fixes: a7b4f989a6294 ("netfilter: ipset: IP set core support")
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-14 20:05:48 +01:00