diff options
| author | Veaceslav Falico <vfalico@redhat.com> | 2013-11-29 09:53:23 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 07:29:26 -0800 |
| commit | 5b9e9be7756854ddd525fb9882f1feddd9435831 (patch) | |
| tree | c5cdb7f55285f01548a2ff2377dd82da8b7cfd23 /include/linux/stackprotector.h | |
| parent | 026bb4057a0473132bdfa910bd2089de1a7af3f6 (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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/stackprotector.h')
0 files changed, 0 insertions, 0 deletions