Messages in this thread Patch in this message | | | From | robert.foss@collabor ... | Subject | [PACTH v1] kernel/hung_task.c: Dump all UNINTERUPTIBLE tasks | Date | Tue, 2 Aug 2016 11:23:11 -0400 |
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From: Aaron Durbin <adurbin@chromium.org>
When the panic path is taken for khungtaskd dump all tasks with the UNINTERUPTIBLE state. That way, any inter-dependent tasks that caused one another to hang will be saved in the crash output.
Signed-off-by: Aaron Durbin <adurbin@chromium.org> Tested-by: Robert Foss <robert.foss@collabora.com> Signed-off-by: Robert Foss <robert.foss@collabora.com> --- kernel/hung_task.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/hung_task.c b/kernel/hung_task.c index d234022..946caf9 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -122,6 +122,8 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) touch_nmi_watchdog(); if (sysctl_hung_task_panic) { + /* Dump all tasks. */ + show_state_filter(TASK_UNINTERRUPTIBLE); trigger_all_cpu_backtrace(); panic("hung_task: blocked tasks"); } -- 2.7.4
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