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| author | Eric Dumazet <edumazet@google.com> | 2013-02-22 07:43:35 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-22 15:10:19 -0500 |
| commit | 4cfb04854d053e4d6391d7f84495f48082342362 (patch) | |
| tree | c95cf3b428f797e0ee75defbe31dfabf6c6957bb /net | |
| parent | e2f8d555ec04a0beb965ea76e3a150993e8f0436 (diff) | |
| download | linux-4cfb04854d053e4d6391d7f84495f48082342362.tar.gz linux-4cfb04854d053e4d6391d7f84495f48082342362.tar.bz2 linux-4cfb04854d053e4d6391d7f84495f48082342362.zip | |
net: fix possible deadlock in sum_frag_mem_limit
Dave Jones reported a lockdep splat occurring in IP defrag code.
commit 6d7b857d541ecd1d (net: use lib/percpu_counter API for
fragmentation mem accounting) added a possible deadlock.
Because percpu_counter_sum_positive() needs to acquire
a lock that can be used from softirq, we need to disable BH
in sum_frag_mem_limit()
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions