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| author | Veaceslav Falico <vfalico@redhat.com> | 2013-11-29 08:53:23 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 15:29:14 (GMT) |
| commit | f517950d9c64e4c75d054b3268b43c60b5ab0849 (patch) | |
| tree | 559692bf544f85741730c3a547bff11ec9510e86 /net/core | |
| parent | efc27dbe987ac25688b3c4ef8c4792209644306b (diff) | |
| download | linux-fsl-qoriq-f517950d9c64e4c75d054b3268b43c60b5ab0849.tar.xz | |
af_packet: block BH in prb_shutdown_retire_blk_timer()
[ Upstream commit ec6f809ff6f19fafba3212f6aff0dda71dfac8e8 ]
Currently we're using plain spin_lock() in prb_shutdown_retire_blk_timer(),
however the timer might fire right in the middle and thus try to re-aquire
the same spinlock, leaving us in a endless loop.
To fix that, use the spin_lock_bh() to block it.
Fixes: f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation.")
CC: "David S. Miller" <davem@davemloft.net>
CC: Daniel Borkmann <dborkman@redhat.com>
CC: Willem de Bruijn <willemb@google.com>
CC: Phil Sutter <phil@nwl.cc>
CC: Eric Dumazet <edumazet@google.com>
Reported-by: Jan Stancek <jstancek@redhat.com>
Tested-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions