[PATCH] suspend to disk fails if gdb is suspended with a traced child

Fix http://bugzilla.kernel.org/show_bug.cgi?id=7534

Fix the freezing of processes so that it won't fail if there is a traced
process the parent of which has been stopped.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: maurice barnum <pixi+kbug@burble.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/power/process.c b/kernel/power/process.c
index cba8a58..1badb9a 100644 (file)
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -97,7 +97,9 @@ int freeze_processes(void)
                                continue;
                        if (frozen(p))
                                continue;
-                       if (p->state == TASK_TRACED && frozen(p->parent)) {
+                       if (p->state == TASK_TRACED &&
+                           (frozen(p->parent) ||
+                            p->parent->state == TASK_STOPPED)) {
                                cancel_freezing(p);
                                continue;
                        }