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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-02-18 22:35:56 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-02-19 18:59:04 -0800 |
| commit | 91035f0b7d89291af728b6f3e370c3be58fcbe1b (patch) | |
| tree | e15aeadf32b4e4c2874c72be0100dbe0f222f84a /net/ipv4/inet_timewait_sock.c | |
| parent | ece639caa33c85c8805fa4a0a5955b8de9c95346 (diff) | |
| download | linux-91035f0b7d89291af728b6f3e370c3be58fcbe1b.tar.bz2 | |
tcp: fix inet_twsk_deschedule()
Eric W. Biederman reported a lockdep splat in inet_twsk_deschedule()
This is caused by inet_twsk_purge(), run from process context,
and commit 575f4cd5a5b6394577 (net: Use rcu lookups in inet_twsk_purge.)
removed the BH disabling that was necessary.
Add the BH disabling but fine grained, right before calling
inet_twsk_deschedule(), instead of whole function.
With help from Linus Torvalds and Eric W. Biederman
Reported-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Daniel Lezcano <daniel.lezcano@free.fr>
CC: Pavel Emelyanov <xemul@openvz.org>
CC: Arnaldo Carvalho de Melo <acme@redhat.com>
CC: stable <stable@kernel.org> (# 2.6.33+)
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_timewait_sock.c')
| -rw-r--r-- | net/ipv4/inet_timewait_sock.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c index c5af909cf701..3c8dfa16614d 100644 --- a/net/ipv4/inet_timewait_sock.c +++ b/net/ipv4/inet_timewait_sock.c @@ -505,7 +505,9 @@ restart: } rcu_read_unlock(); + local_bh_disable(); inet_twsk_deschedule(tw, twdr); + local_bh_enable(); inet_twsk_put(tw); goto restart_rcu; } |