ipv6: fix possible seqlock deadlock in ip6_finish_output2

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IPv6 stats are 64 bits and thus are protected with a seqlock. By not
disabling bottom-half we could deadlock here if we don't disable bh and
a softirq reentrantly updates the same mib.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Hannes Frederic Sowa 2013-11-29 06:39:44 +01:00 • committed by David S. Miller

parent 696701b89d

commit 7f88c6b23a

1 changed files with 2 additions and 2 deletions

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net/ipv6/ip6_output.c

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