bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 340ea5301c27db4a3678f13acc430e04706a0cc6
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: eaf87eba07e172d525e4d9efd9771ed77cea2421e0a6ea972b19af5450803123
all runs: crashed: divide error in fbcon_switch
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7bd2f85feec7b7bbb975ffe34b6fd24eec55204beab4cf99003ffc14958fbb8a
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m52.396756982s (build: 20m11.802719794s, test: 6m11.246591718s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1