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SubjectRe: [PATCH] softlock: fix false panic which can occur if softlockup_thresh is reduced

* Mandeep Singh Baines <msb@google.com> 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@google.com>
> ---
> 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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