Willem de Bruijn ec6af094ea net/packet: rx_owner_map depends on pg_vec ... 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>		2021-12-15 17:49:36 -08:00
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af_packet.c	net/packet: rx_owner_map depends on pg_vec	2021-12-15 17:49:36 -08:00
diag.c	treewide: Add SPDX license identifier for more missed files	2019-05-21 10:50:45 +02:00
internal.h	net/packet: remove data races in fanout operations	2021-04-14 14:34:38 -07:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00