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| author | Mandeep Singh Baines <msb@google.com> | 2009-01-12 21:15:17 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-14 11:48:07 +0100 |
| commit | baf48f6577e581a9adb8fe849dc80e24b21d171d (patch) | |
| tree | 279e54b7374a9c52025ded4f9bb718e5382b0340 /kernel/sysctl.c | |
| parent | e4fa4c97016037620f9dc8bafe03e1086b665b4c (diff) | |
| download | lwn-baf48f6577e581a9adb8fe849dc80e24b21d171d.tar.gz lwn-baf48f6577e581a9adb8fe849dc80e24b21d171d.zip | |
softlock: fix false panic which can occur if softlockup_thresh is reduced
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>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 89d74436318c..596dc31a7116 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -800,7 +800,7 @@ static struct ctl_table kern_table[] = { .data = &softlockup_thresh, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = &proc_dointvec_minmax, + .proc_handler = &proc_dosoftlockup_thresh, .strategy = &sysctl_intvec, .extra1 = &neg_one, .extra2 = &sixty, |