inet: read sk->sk_family once in inet_recv_error()

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[ Upstream commit eef00a82c5 ]

inet_recv_error() is called without holding the socket lock.

IPv6 socket could mutate to IPv4 with IPV6_ADDRFORM
socket option and trigger a KCSAN warning.

Fixes: f4713a3dfa ("net-timestamp: make tcp_recvmsg call ipv6_recv_error for AF_INET6 socks")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eric Dumazet 2024-02-02 09:54:04 +00:00 • committed by Greg Kroah-Hartman

parent 3fa78ee0e3

commit 5453875221

1 changed files with 4 additions and 2 deletions

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net/ipv4/af_inet.c

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