diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-09-12 09:17:24 +0000 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-09-14 16:16:36 +0200 |
| commit | e1dc0615c6b08ef36414f08c011965b8fb56198b (patch) | |
| tree | 146013171a93e03ec8d322c189bd82fc615922ab /net/ipv6/udp.c | |
| parent | bcbc1b1de884647aa0318bf74eb7f293d72a1e40 (diff) | |
udp: move udp->gro_enabled to udp->udp_flags
syzbot reported that udp->gro_enabled can be read locklessly.
Use one atomic bit from udp->udp_flags.
Fixes: e20cf8d3f1f7 ("udp: implement GRO for plain UDP sockets.")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/ipv6/udp.c')
| -rw-r--r-- | net/ipv6/udp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 6e1ea3029260..2c3281879b6d 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -413,7 +413,7 @@ try_again: (struct sockaddr *)sin6); } - if (udp_sk(sk)->gro_enabled) + if (udp_test_bit(GRO_ENABLED, sk)) udp_cmsg_recv(msg, sk, skb); if (np->rxopt.all) |