tree ae2e3a27cdfbc515a8929585344221fc1575891d
parent ea66fcb296058e0d41afa770f6900b335f8738a5
author Eric Dumazet <edumazet@google.com> 1625256543 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1627216581 +0200

tcp: annotate data races around tp->mtu_info

commit 561022acb1ce62e50f7a8258687a21b84282a4cb upstream.

While tp->mtu_info is read while socket is owned, the write
sides happen from err handlers (tcp_v[46]_mtu_reduced)
which only own the socket spinlock.

Fixes: 563d34d05786 ("tcp: dont drop MTU reduction indications")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>