can: af_can: can_rcv(): replace WARN_ONCE by pr_warn_once

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commit 8cb68751c1 upstream.

If an invalid CAN frame is received, from a driver or from a tun
interface, a Kernel warning is generated.

This patch replaces the WARN_ONCE by a simple pr_warn_once, so that a
kernel, bootet with panic_on_warn, does not panic. A printk seems to be
more appropriate here.

Reported-by: syzbot+4386709c0c1284dca827@syzkaller.appspotmail.com
Suggested-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Marc Kleine-Budde 2018-01-16 19:30:14 +01:00 • committed by Greg Kroah-Hartman

parent 659af12a27

commit 91c5fbf1e2

1 changed files with 7 additions and 11 deletions

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18

net/can/af_can.c

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