Re: [PATCH] softlock: fix false panic which can occur ifsoftlockup_thresh is reduced

[Ingo Molnar]

* Mandeep Singh Baines <msb@xxxxxxxxxx> wrote:

> At run-time, if softlockup_thresh is changed to a much lower value,
> touch_timestamp is likely to be much older than the new softlock_thresh.
> 
> This will cause a false softlockup to be detected. If softlockup_panic
> is enabled, the system will panic.
> 
> The fix is to touch all watchdogs before changing softlockup_thresh.
> 
> Signed-off-by: Mandeep Singh Baines <msb@xxxxxxxxxx>
> ---
>  include/linux/sched.h |    3 +++
>  kernel/softlockup.c   |    9 +++++++++
>  kernel/sysctl.c       |    2 +-
>  3 files changed, 13 insertions(+), 1 deletions(-)

applied to tip/core/urgent, thanks!

	Ingo
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