This patch series increase security of suspend and hibernate actions. It allows user to safely wipe crypto keys before suspend and hibernate actions starts without race conditions on userspace process with heavy I/O.
To automatically wipe cryto key for <device> before hibernate action call: $ dmsetup message <device> 0 key wipe_on_hibernation 1 To automatically wipe cryto key for <device> before suspend action call: $ dmsetup message <device> 0 key wipe_on_suspend 1 (Value 0 after wipe_* string reverts original behaviour - to not wipe key) Pali Rohár (3): PM suspend/hibernate: Call notifier after freezing processes dm: Export function dm_suspend_md() dm-crypt: Adds support for wiping key when doing suspend/hibernation drivers/md/dm-crypt.c | 109 +++++++++++++++++++++++++++++++++++++++++++--- drivers/md/dm.c | 6 +++ drivers/md/dm.h | 5 +++ include/linux/suspend.h | 2 + kernel/power/hibernate.c | 2 + kernel/power/suspend.c | 4 +- 6 files changed, 120 insertions(+), 8 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
