After spotting a stuck process, and having decided not to panic, give the task a kick to see if that helps it to recover (e.g. to paper over a missed wake up).
References: https://bugs.freedesktop.org/show_bug.cgi?id=104009 References: https://bugs.freedesktop.org/show_bug.cgi?id=104682 Signed-off-by: Chris Wilson <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Tetsuo Handa <[email protected]> Cc: Andrew Morton <[email protected]> --- kernel/hung_task.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/hung_task.c b/kernel/hung_task.c index 751593ed7c0b..b32acb6bcc63 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -132,6 +132,8 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) trigger_all_cpu_backtrace(); panic("hung_task: blocked tasks"); } + + wake_up_process(t); } /* -- 2.16.1
