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Jessica Zhang 47e3930610 drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected 
[ Upstream commit ca75f6f7c6 ]

There is a possibility for mdp5_get_global_state to return
-EDEADLK when acquiring the modeset lock, but currently global_state in
mdp5_mixer_release doesn't check for if an error is returned.

To avoid a NULL dereference error, let's have mdp5_mixer_release
check if an error is returned and propagate that error.

Reported-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Fixes: 7907a0d77c ("drm/msm/mdp5: Use the new private_obj state")
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/485181/
Link: https://lore.kernel.org/r/20220505214051.155-2-quic_jesszhan@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-09 10:25:48 +02:00
arch arm64: fix types in copy_highpage() 2022-06-09 10:25:47 +02:00
block blk-throttle: Set BIO_THROTTLED when bio has been throttled 2022-06-09 10:25:29 +02:00
certs certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty 2022-01-23 00:08:44 +09:00
crypto crypto: ecrdsa - Fix incorrect use of vli_cmp 2022-06-06 08:47:53 +02:00
Documentation sched/psi: report zeroes for CPU full at the system level 2022-06-09 10:25:41 +02:00
drivers drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected 2022-06-09 10:25:48 +02:00
fs fsnotify: fix wrong lockdep annotations 2022-06-09 10:25:43 +02:00
include x86/speculation: Add missing prototype for unpriv_ebpf_notify() 2022-06-09 10:25:44 +02:00
init kthread: Don't allocate kthread_struct for init and umh 2022-06-09 10:25:16 +02:00
ipc ipc/sem: do not sleep with a spin lock held 2022-02-04 09:25:05 -08:00
kernel printk: wake waiters for safe and NMI contexts 2022-06-09 10:25:42 +02:00
lib kunit: fix debugfs code to use enum kunit_status, not bool 2022-06-09 10:25:46 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm zsmalloc: fix races between asynchronous zspage free and page migration 2022-06-06 08:47:53 +02:00
net nl80211: don't hold RTNL in color change request 2022-06-09 10:25:46 +02:00
samples samples/bpf, xdpsock: Fix race when running for fix duration of time 2022-04-08 13:58:18 +02:00
scripts kconfig: add fflush() before ferror() check 2022-05-25 09:58:59 +02:00
security lockdown: also lock down previous kgdb use 2022-05-25 09:59:10 +02:00
sound ASoC: rk3328: fix disabling mclk on pclk probe failure 2022-06-09 10:25:45 +02:00
tools perf tools: Use Python devtools for version autodetection rather than runtime 2022-06-09 10:25:46 +02:00
usr kbuild: remove include/linux/cyclades.h from header file check 2022-01-27 08:51:08 +01:00
virt KVM: Free new dirty bitmap if creating a new memslot fails 2022-05-25 09:59:03 +02:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap MAINTAINERS: Update Jisheng's email address 2022-03-08 17:30:32 +01:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS net: dsa: realtek-smi: move to subdirectory 2022-04-08 13:58:12 +02:00
Makefile Linux 5.17.13 2022-06-06 08:47:57 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.