On 01/16/2018 06:58 PM, syzbot wrote: > Hello, > > syzkaller hit the following crash on > a8750ddca918032d6349adbf9a4b6555e7db20da > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > C reproducer is attached > syzkaller reproducer is attached. See https://goo.gl/kgGztJ > for information about syzkaller reproducers > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+4386709c0c1284dca...@syzkaller.appspotmail.com > It will help syzbot understand when the bug is fixed. See footer for > details. > If you forward the report, please keep this part and the footer. > > device eql entered promiscuous mode > ------------[ cut here ]------------ > PF_CAN: dropped non conform CAN skbuf: dev type 65534, len 42, datalen 0 > WARNING: CPU: 0 PID: 3650 at net/can/af_can.c:729 can_rcv+0x1c5/0x200 > net/can/af_can.c:724 > Kernel panic - not syncing: panic_on_warn set ...
Invalid packages generate a warning (WARN_ONCE()), and you have panic_on_warn active. Should we better silently drop these CAN packages? Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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