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linux/kernel/power
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Thomas Garnier 62822e2ec4 PM / hibernate: Restore processor state before using per-CPU variables 
Restore the processor state before calling any other functions to
ensure per-CPU variables can be used with KASLR memory randomization.

Tracing functions use per-CPU variables (GS based on x86) and one was
called just before restoring the processor state fully. It resulted
in a double fault when both the tracing & the exception handler
functions tried to use a per-CPU variable.

Fixes: bb3632c610 (PM / sleep: trace events for suspend/resume)
Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Reported-by: Jiri Kosina <jikos@kernel.org>
Tested-by: Rafael J. Wysocki <rafael@kernel.org>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Garnier <thgarnie@google.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-12 22:50:42 +02:00
..
autosleep.c
console.c PM / sleep: Make pm_prepare_console() return void 2016-06-15 01:26:04 +02:00
hibernate.c PM / hibernate: Restore processor state before using per-CPU variables 2016-08-12 22:50:42 +02:00
Kconfig PM: APM_EMULATION does not depend on PM 2016-01-27 23:20:14 +01:00
main.c PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
Makefile PM / Hibernate: Don't let kasan instrument snapshot.c 2016-06-14 00:38:56 +02:00
power.h x86 / hibernate: Use hlt_play_dead() when resuming from hibernation 2016-07-15 22:42:48 +02:00
poweroff.c
process.c Merge back earlier suspend/hibernation changes for v4.8. 2016-07-08 23:14:17 +02:00
qos.c
snapshot.c PM / hibernate: Image data protection during restoration 2016-07-10 02:12:10 +02:00
suspend.c PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
suspend_test.c
swap.c PM / hibernate: Introduce test_resume mode for hibernation 2016-07-22 13:57:23 +02:00
user.c PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
wakelock.c PM / autosleep: Use workqueue for user space wakeup sources garbage collector 2015-07-14 21:04:48 +02:00