stable inclusion
from stable-v5.10.138
commit 05b9b0a7a7cdc297b63534474bf5ec5976949abf
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I60QFD

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=05b9b0a7a7cdc297b63534474bf5ec5976949abf

--------------------------------

commit 8ef49f7f upstream.

We should warn user-space that it is doing something wrong when trying
to activate sessions with identical parameters but WARN_ON_ONCE macro
can not be used here as it serves a different purpose.

So it would be good to replace it with netdev_warn_once() message.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol")
Signed-off-by: NFedor Pchelkin <pchelkin@ispras.ru>
Signed-off-by: NAlexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: NOleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/all/20220729143655.1108297-1-pchelkin@ispras.ru
[mkl: fix indention]
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>