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linux/kernel/power
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Alexander Potapenko 18451f9f9e PM: hibernate: fix crashes with init_on_free=1 
Upon resuming from hibernation, free pages may contain stale data from
the kernel that initiated the resume. This breaks the invariant
inflicted by init_on_free=1 that freed pages must be zeroed.

To deal with this problem, make clear_free_pages() also clear the free
pages when init_on_free is enabled.

Fixes: 6471384af2 ("mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options")
Reported-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: 5.3+ <stable@vger.kernel.org> # 5.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-01-16 23:51:45 +01:00
..
autosleep.c PM / wakeup: Show wakeup sources stats in sysfs 2019-08-21 00:20:40 +02:00
console.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
energy_model.c sched/topology: Remove unused 'sd' parameter from arch_scale_cpu_capacity() 2019-06-24 19:23:39 +02:00
hibernate.c hibernate: Disable when the kernel is locked down 2019-08-19 21:54:15 -07:00
Kconfig pci-v5.3-changes 2019-07-15 20:44:49 -07:00
main.c PM: sleep: include <linux/pm_runtime.h> for pm_wq 2019-10-10 11:11:56 +02:00
Makefile PM: Introduce an Energy Model management framework 2018-12-11 15:16:58 +01:00
power.h y2038: syscalls: change remaining timeval to __kernel_old_timeval 2019-11-15 14:38:29 +01:00
poweroff.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248 2019-06-19 17:09:08 +02:00
process.c PM / sleep: Show freezing tasks that caused a suspend abort 2018-09-10 12:09:10 +02:00
qos.c PM / QoS: Restore DEV_PM_QOS_MIN/MAX_FREQUENCY 2019-11-29 12:04:50 +01:00
snapshot.c PM: hibernate: fix crashes with init_on_free=1 2020-01-16 23:51:45 +01:00
suspend_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
suspend.c PM: suspend: Fix platform_suspend_prepare_noirq() 2019-08-10 13:18:06 +02:00
swap.c kernel: power: swap: use kzalloc() instead of kmalloc() followed by memset() 2019-06-28 10:20:39 +02:00
user.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
wakelock.c PM / wakeup: Show wakeup sources stats in sysfs 2019-08-21 00:20:40 +02:00