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| author | Patrick McHardy <kaber@trash.net> | 2007-07-09 15:30:19 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-10 22:19:03 -0700 |
| commit | 6b25d30bf112370a12d05c3c0fd43732985dab01 (patch) | |
| tree | 9739e7085a36283e3755ba33887457e4dd25206a /net/core | |
| parent | 1498b3f1952ae539a7d5c356acf942d5f4c1aece (diff) | |
| download | linux-6b25d30bf112370a12d05c3c0fd43732985dab01.tar.gz linux-6b25d30bf112370a12d05c3c0fd43732985dab01.tar.bz2 linux-6b25d30bf112370a12d05c3c0fd43732985dab01.zip | |
[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>
Diffstat (limited to 'net/core')
| -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); } |