From 695cb013a3332b6c773c8a75be97aa6f91bc227f Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Wed, 1 Feb 2012 22:16:36 +0100 Subject: [PATCH] PM / Hibernate: Thaw kernel threads in SNAPSHOT_CREATE_IMAGE ioctl path commit fe9161db2e6053da21e4649d77bbefaf3030b11d upstream. In the SNAPSHOT_CREATE_IMAGE ioctl, if the call to hibernation_snapshot() fails, the frozen tasks are not thawed. And in the case of success, if we happen to exit due to a successful freezer test, all tasks (including those of userspace) are thawed, whereas actually we should have thawed only the kernel threads at that point. Fix both these issues. Signed-off-by: Srivatsa S. Bhat Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- kernel/power/user.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/power/user.c b/kernel/power/user.c index f08bbfb..f08d227 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -283,13 +283,15 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, } pm_restore_gfp_mask(); error = hibernation_snapshot(data->platform_support); - if (!error) { + if (error) { + thaw_kernel_threads(); + } else { error = put_user(in_suspend, (int __user *)arg); if (!error && !freezer_test_done) data->ready = 1; if (freezer_test_done) { freezer_test_done = false; - thaw_processes(); + thaw_kernel_threads(); } } break; -- 2.7.4