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fc14eebfc2
linux/kernel/power
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Tetsuo Handa fc14eebfc2 PM / hibernate: Fix oops at snapshot_write() 
syzbot is reporting NULL pointer dereference at snapshot_write() [1].
This is because data->handle is zero-cleared by ioctl(SNAPSHOT_FREE).
Fix this by checking data_of(data->handle) != NULL before using it.

[1] https://syzkaller.appspot.com/bug?id=828a3c71bd344a6de8b6a31233d51a72099f27fd

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+ae590932da6e45d6564d@syzkaller.appspotmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-27 12:00:02 +02:00
..
autosleep.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
console.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hibernate.c PM / suspend: Prevent might sleep splats 2018-05-27 11:55:02 +02:00
Kconfig PM / OPP: Move the OPP directory out of power/ 2017-10-03 02:45:12 +02:00
main.c PM / sleep: Make lock/unlock_system_sleep() available to kernel modules 2018-01-10 01:07:46 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
power.h x86/power: Fix swsusp_arch_resume prototype 2018-02-02 23:33:50 +01:00
poweroff.c
process.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qos.c PM / QoS: mark expected switch fall-throughs 2018-04-09 13:49:40 +02:00
snapshot.c PM: hibernate: Do not subtract NR_FILE_MAPPED in minimum_image_size() 2018-01-05 14:46:25 +01:00
suspend_test.c PM / s2idle: Rename PM_SUSPEND_FREEZE to PM_SUSPEND_TO_IDLE 2017-08-11 01:29:55 +02:00
suspend.c PM / wakeup: Make s2idle_lock a RAW_SPINLOCK 2018-05-27 11:55:02 +02:00
swap.c Merge branch 'for-4.16/block' of git://git.kernel.dk/linux-block 2018-01-29 11:51:49 -08:00
user.c PM / hibernate: Fix oops at snapshot_write() 2018-05-27 12:00:02 +02:00
wakelock.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00