macsec: use DEV_STATS_INC()
authorEric Dumazet <edumazet@google.com>
Fri, 4 Aug 2023 17:26:52 +0000 (17:26 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Aug 2023 16:27:26 +0000 (18:27 +0200)
commitfc0b41ac11069c77723bffd4c9c5adb4dcee635f
treed8418b6b53250411e12845e748db2d1602e7feca
parentebceef298c56bb5c898ab497051e99671bc268d8
macsec: use DEV_STATS_INC()

commit 32d0a49d36a2a306c2e47fe5659361e424f0ed3f upstream.

syzbot/KCSAN reported data-races in macsec whenever dev->stats fields
are updated.

It appears all of these updates can happen from multiple cpus.

Adopt SMP safe DEV_STATS_INC() to update dev->stats fields.

Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/macsec.c