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Veaceslav Falico ec6f809ff6 af_packet: block BH in prb_shutdown_retire_blk_timer() 
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: f6fb8f100b ("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>
 		2013-11-29 16:11:08 -05:00
..
Kconfig packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00
Makefile packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00
af_packet.c af_packet: block BH in prb_shutdown_retire_blk_timer() 2013-11-29 16:11:08 -05:00
diag.c sock_diag: allow to dump bpf filters 2013-04-29 13:21:30 -04:00
internal.h packet: fix use after free race in send path when dev is released 2013-11-21 13:09:43 -05:00