Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | Re: Fwd: [v3.12-rc1] [regression] PM / hibernate: Create memory bitmaps after freezing user space | Date | Sun, 29 Sep 2013 03:16:40 +0200 |
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On Saturday, September 28, 2013 08:18:18 PM Ronald wrote: > [ resend, forgot to disable HTML (sorry!) ] > > Dear kernel developers, > > Commit 8fd37a4c9 (PM / hibernate: Create memory bitmaps after freezing > user space) causes resume to fail. > > Only, when using the s2disk utility (through pm-hibernate). > > Not when I do: > > echo -n "disk" > /sys/power/state > > Reverting the commit did not work. > > I am using a encrypted LUKS partition with a temporary key that is > functioning as the swap device used for the suspend image. > > Awaiting further orders....
I'm traveling now, so I can't really test things, but I think I know what the problem is.
Can you please check if the appended patch makes any difference for you?
Rafael
--- kernel/power/snapshot.c | 5 ++++- kernel/power/user.c | 5 +++++ 2 files changed, 9 insertions(+), 1 deletion(-)
Index: linux-pm/kernel/power/snapshot.c =================================================================== --- linux-pm.orig/kernel/power/snapshot.c +++ linux-pm/kernel/power/snapshot.c @@ -743,7 +743,10 @@ int create_basic_memory_bitmaps(void) struct memory_bitmap *bm1, *bm2; int error = 0; - BUG_ON(forbidden_pages_map || free_pages_map); + if (forbidden_pages_map && free_pages_map) + return 0; + else + BUG_ON(forbidden_pages_map || free_pages_map); bm1 = kzalloc(sizeof(struct memory_bitmap), GFP_KERNEL); if (!bm1) Index: linux-pm/kernel/power/user.c =================================================================== --- linux-pm.orig/kernel/power/user.c +++ linux-pm/kernel/power/user.c @@ -82,6 +82,9 @@ static int snapshot_open(struct inode *i data->swap = -1; data->mode = O_WRONLY; error = pm_notifier_call_chain(PM_RESTORE_PREPARE); + if (!error) + error = create_basic_memory_bitmaps(); + if (error) pm_notifier_call_chain(PM_POST_RESTORE); }
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