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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-11-02 12:42:56 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-11-03 18:06:18 -0400 |
| commit | 918eb39962dfff9490a43cd08176b962cacc7978 (patch) | |
| tree | 53275f3622cf13f57296481a556c47dd5d92f16f /net/dccp | |
| parent | e2e210c0238eb7073e07af503ae743fa53977120 (diff) | |
| download | lwn-918eb39962dfff9490a43cd08176b962cacc7978.tar.gz lwn-918eb39962dfff9490a43cd08176b962cacc7978.zip | |
net: add missing bh_unlock_sock() calls
Simon Kirby reported lockdep warnings and following messages :
[104661.897577] huh, entered softirq 3 NET_RX ffffffff81613740
preempt_count 00000101, exited with 00000102?
[104661.923653] huh, entered softirq 3 NET_RX ffffffff81613740
preempt_count 00000101, exited with 00000102?
Problem comes from commit 0e734419
(ipv4: Use inet_csk_route_child_sock() in DCCP and TCP.)
If inet_csk_route_child_sock() returns NULL, we should release socket
lock before freeing it.
Another lock imbalance exists if __inet_inherit_port() returns an error
since commit 093d282321da ( tproxy: fix hash locking issue when using
port redirection in __inet_inherit_port()) a backport is also needed for
>= 2.6.37 kernels.
Reported-by: Simon Kirby <sim@hostway.ca>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Balazs Scheidler <bazsi@balabit.hu>
CC: KOVACS Krisztian <hidden@balabit.hu>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Simon Kirby <sim@hostway.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp')
| -rw-r--r-- | net/dccp/ipv4.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 332639b56f4d..90a919afbed7 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -433,6 +433,7 @@ exit: NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS); return NULL; put_and_exit: + bh_unlock_sock(newsk); sock_put(newsk); goto exit; } |