Commit-ID: a6572f84c5b135d9b6df279ed3c8de028bd1edd9
Gitweb: http://git.kernel.org/tip/a6572f84c5b135d9b6df279ed3c8de028bd1edd9
Author: Li Zefan <lizefan@xxxxxxxxxx>
AuthorDate: Fri, 17 May 2013 10:31:04 +0800
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 28 May 2013 11:28:18 +0200
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@xxxxxxxxxx>
Acked-by: Don Zickus <dzickus@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/51959668.9040106@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
kernel/sysctl.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 9edcf45..b0a1f99 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,
},
{
--
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