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| author | Eric Dumazet <edumazet@google.com> | 2014-09-03 22:21:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-05 17:15:50 -0700 |
| commit | caa415270c732505240bb60171c44a7838c555e8 (patch) | |
| tree | cd44cd81f85c3904340f5cef1a359e2ae97a0c20 /include/net/ip_fib.h | |
| parent | 29abe2fda54f8e16ecff5d76d96325f31508d5ba (diff) | |
| download | talos-op-linux-caa415270c732505240bb60171c44a7838c555e8.tar.gz talos-op-linux-caa415270c732505240bb60171c44a7838c555e8.zip | |
ipv4: fix a race in update_or_create_fnhe()
nh_exceptions is effectively used under rcu, but lacks proper
barriers. Between kzalloc() and setting of nh->nh_exceptions(),
we need a proper memory barrier.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 4895c771c7f00 ("ipv4: Add FIB nexthop exceptions.")
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ip_fib.h')
| -rw-r--r-- | include/net/ip_fib.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index 9922093f575e..f30fd554127e 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -87,7 +87,7 @@ struct fib_nh { int nh_saddr_genid; struct rtable __rcu * __percpu *nh_pcpu_rth_output; struct rtable __rcu *nh_rth_input; - struct fnhe_hash_bucket *nh_exceptions; + struct fnhe_hash_bucket __rcu *nh_exceptions; }; /* |
