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android_kernel_sony_msm8994/kernel/power
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Rafael J. Wysocki 4a3b98a422 [PATCH] swsusp: prevent possible image corruption on resume 
The function free_pagedir() used by swsusp for freeing its internal data
structures clears the PG_nosave and PG_nosave_free flags for each page
being freed.

However, during resume PG_nosave_free set means that the page in
question is "unsafe" (ie.  it will be overwritten in the process of
restoring the saved system state from the image), so it should not be
used for the image data.

Therefore free_pagedir() should not clear PG_nosave_free if it's called
during resume (otherwise "unsafe" pages freed by it may be used for
storing the image data and the data may get corrupted later on).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-19 09:13:49 -07:00
..
console.c [PATCH] Fix build failure in recent pm_prepare_* changes. 2006-02-07 16:12:33 -08:00
disk.c [PATCH] swsusp: freeze user space processes first 2006-03-23 07:38:08 -08:00
Kconfig help text: SOFTWARE_SUSPEND doesn't need ACPI 2006-04-01 01:03:08 +02:00
main.c [PATCH] swsusp: add s2ram ioctl to userland interface 2006-03-23 07:38:08 -08:00
Makefile [PATCH] swsusp: userland interface 2006-03-23 07:38:07 -08:00
pm.c [PATCH] remove kernel/power/pm.c:pm_unregister() 2006-04-14 12:25:26 -07:00
power.h [PATCH] swsusp: add s2ram ioctl to userland interface 2006-03-23 07:38:08 -08:00
poweroff.c [PATCH] Use kernel_power_off in sysrq-o 2005-07-26 14:35:43 -07:00
process.c [PATCH] Fix suspend with traced tasks 2006-03-31 12:18:50 -08:00
smp.c [PATCH] Check if cpu can be onlined before calling smp_prepare_cpu() 2006-03-25 08:23:01 -08:00
snapshot.c [PATCH] swsusp: prevent possible image corruption on resume 2006-04-19 09:13:49 -07:00
swap.c [PATCH] swswsup: return correct load_image error 2006-03-26 08:56:55 -08:00
swsusp.c [PATCH] swsusp: separate swap-writing/reading code 2006-03-23 07:38:07 -08:00
user.c [PATCH] swsusp: add s2ram ioctl to userland interface 2006-03-23 07:38:08 -08:00