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);
 	}