Willem de Bruijn a829ff7c8e net/packet: rx_owner_map depends on pg_vec ... [ Upstream commit ec6af094ea ] Packet sockets may switch ring versions. Avoid misinterpreting state between versions, whose fields share a union. rx_owner_map is only allocated with a packet ring (pg_vec) and both are swapped together. If pg_vec is NULL, meaning no packet ring was allocated, then neither was rx_owner_map. And the field may be old state from a tpacket_v3. Fixes: 61fad6816f ("net/packet: tpacket_rcv: avoid a producer race condition") Reported-by: Syzbot <syzbot+1ac0994a0a0c55151121@syzkaller.appspotmail.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20211215143937.106178-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-12-22 09:18:00 +01:00
..
af_packet.c	net/packet: rx_owner_map depends on pg_vec	2021-12-22 09:18:00 +01:00
diag.c	packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3	2017-01-10 21:02:42 -05:00
internal.h	net/packet: tpacket_rcv: avoid a producer race condition	2020-04-02 16:34:24 +02:00
Kconfig
Makefile