diff options
| author | Veaceslav Falico <vfalico@redhat.com> | 2013-11-29 09:53:23 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-01-03 04:33:34 +0000 |
| commit | 05340764e797226e1d9e91a76a0489ed72b3c355 (patch) | |
| tree | fe6d5d1607b454afc02ee2768bc3406f0d7ea4c2 /net/lapb/lapb_timer.c | |
| parent | ea15a900813efe07bf1cb210fa6388659b264e33 (diff) | |
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: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions