diff options
| author | Patrick McHardy <kaber@trash.net> | 2007-07-18 02:48:43 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-08-09 14:27:27 -0700 |
| commit | 2e9d3cf88b10374bc7a863f4ad9906245d29d2b3 (patch) | |
| tree | fd95651bb40c3808d61a75b02b2a6383beef64c0 /net | |
| parent | 360737d98a12b98d95aa3ebc2c4fbbf68a6a9280 (diff) | |
gen estimator timer unload race
[NET]: Fix gen_estimator timer removal race
As noticed by Jarek Poplawski <jarkao2@o2.pl>, the timer removal in
gen_kill_estimator races with the timer function rearming the timer.
Check whether the timer list is empty before rearming the timer
in the timer function to fix this.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jarek Poplawski <jarkao2@o2.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/gen_estimator.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c index 17daf4c9f793..cc84d8d8a3c7 100644 --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -128,7 +128,8 @@ static void est_timer(unsigned long arg) spin_unlock(e->stats_lock); } - mod_timer(&elist[idx].timer, jiffies + ((HZ<<idx)/4)); + if (elist[idx].list != NULL) + mod_timer(&elist[idx].timer, jiffies + ((HZ<<idx)/4)); read_unlock(&est_lock); } |