diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-05-17 10:31:04 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-05-28 11:28:18 +0200 |
| commit | a6572f84c5b135d9b6df279ed3c8de028bd1edd9 (patch) | |
| tree | 8555a23db262d55512bf1fc365c5be8ede427f10 /kernel/sysctl.c | |
| parent | 1b45adcd9a503428e6de6b39bc6892d86c9c1d41 (diff) | |
watchdog: Disallow setting watchdog_thresh to -1
In old kernels, it's allowed to set softlockup_thresh to -1 or 0
to disable softlockup detection. However watchdog_thresh only
uses 0 to disable detection, and setting it to -1 just froze my
box and nothing I can do but reboot.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Link: http://lkml.kernel.org/r/51959668.9040106@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 9edcf456e0f..b0a1f99907f 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -120,7 +120,6 @@ extern int blk_iopoll_enabled; /* Constants used for minimum and maximum */ #ifdef CONFIG_LOCKUP_DETECTOR static int sixty = 60; -static int neg_one = -1; #endif static int zero; @@ -814,7 +813,7 @@ static struct ctl_table kern_table[] = { .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dowatchdog, - .extra1 = &neg_one, + .extra1 = &zero, .extra2 = &sixty, }, { |