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| author | Vitaliy Gusev <vgusev@openvz.org> | 2010-03-16 01:07:51 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-16 21:15:47 (GMT) |
| commit | 858a18a6a2f74e8f0e5b2e9671d4b74694aba708 (patch) | |
| tree | ccdb6cff136e02b47803b1fe5cec77821f6c7c9f | |
| parent | 8440853bb70010f2f8edc26cb0f7af60da8b2c5a (diff) | |
| download | linux-858a18a6a2f74e8f0e5b2e9671d4b74694aba708.tar.xz | |
route: Fix caught BUG_ON during rt_secret_rebuild_oneshot()
route: Fix caught BUG_ON during rt_secret_rebuild_oneshot()
Call rt_secret_rebuild can cause BUG_ON(timer_pending(&net->ipv4.rt_secret_timer)) in
add_timer as there is not any synchronization for call rt_secret_rebuild_oneshot()
for the same net namespace.
Also this issue affects to rt_secret_reschedule().
Thus use mod_timer enstead.
Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/route.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index d9b4024..a770df24 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -932,10 +932,8 @@ static void rt_secret_rebuild_oneshot(struct net *net) { del_timer_sync(&net->ipv4.rt_secret_timer); rt_cache_invalidate(net); - if (ip_rt_secret_interval) { - net->ipv4.rt_secret_timer.expires += ip_rt_secret_interval; - add_timer(&net->ipv4.rt_secret_timer); - } + if (ip_rt_secret_interval) + mod_timer(&net->ipv4.rt_secret_timer, jiffies + ip_rt_secret_interval); } static void rt_emergency_hash_rebuild(struct net *net) @@ -3103,22 +3101,20 @@ static void rt_secret_reschedule(int old) rtnl_lock(); for_each_net(net) { int deleted = del_timer_sync(&net->ipv4.rt_secret_timer); + long time; if (!new) continue; if (deleted) { - long time = net->ipv4.rt_secret_timer.expires - jiffies; + time = net->ipv4.rt_secret_timer.expires - jiffies; if (time <= 0 || (time += diff) <= 0) time = 0; - - net->ipv4.rt_secret_timer.expires = time; } else - net->ipv4.rt_secret_timer.expires = new; + time = new; - net->ipv4.rt_secret_timer.expires += jiffies; - add_timer(&net->ipv4.rt_secret_timer); + mod_timer(&net->ipv4.rt_secret_timer, jiffies + time); } rtnl_unlock(); } |