diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-05-02 21:42:08 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2023-12-18 14:23:56 +0200 |
| commit | 88701af1c9d9bdfd0781a947e304dde20de3721e (patch) | |
| tree | 28a9c7cedc1aa9472fad8bd13ca46bd5cc3a93e2 | |
| parent | 223ce9000fadb651f57b32151a41a7c044ec80c1 (diff) | |
RFC: soft/hardlookup: taint kernel
There's the soft/hardlookup_panic sysctls, but that's a bit an extreme
measure. As a fallback taint at least the machine.
Our CI uses this to decide when a reboot is necessary, plus to figure
out whether the kernel is still happy.
References: https://gitlab.freedesktop.org/drm/intel/-/issues/8035
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Laurence Oberman <loberman@redhat.com>
Cc: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Sinan Kaya <okaya@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk> (for core-for-CI)
Link: https://patchwork.freedesktop.org/patch/msgid/20190502194208.3535-2-daniel.vetter@ffwll.ch
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
| -rw-r--r-- | kernel/watchdog.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 5cd6d4e26915..a721a21cc781 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -178,6 +178,8 @@ void watchdog_hardlockup_check(unsigned int cpu, struct pt_regs *regs) if (hardlockup_panic) nmi_panic(regs, "Hard LOCKUP"); + else + add_taint(TAINT_WARN, LOCKDEP_STILL_OK); per_cpu(watchdog_hardlockup_warned, cpu) = true; } else { @@ -532,6 +534,8 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer) add_taint(TAINT_SOFTLOCKUP, LOCKDEP_STILL_OK); if (softlockup_panic) panic("softlockup: hung tasks"); + else + add_taint(TAINT_WARN, LOCKDEP_STILL_OK); } return HRTIMER_RESTART; |