bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 340ea5301c27db4a3678f13acc430e04706a0cc6
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a with gcc (GCC) 8.4.1 20210217
kernel signature: 2338f8bca42f808d315456495f61ad7268f5e465391995070119298f119ffe4c
all runs: crashed: divide error in fbcon_switch
testing current HEAD cfb41ef9deb1e6572ac218ddfcec9567e5d1c101
testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217
kernel signature: c52cb92fce627d51ef8d514574be51f2cd9a533cb75a84a67abe7c0f149c4c73
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m24.626449166s (build: 16m5.586029237s, test: 5m56.333109361s)
the crash still happens on HEAD
commit msg: Linux 4.14.237
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1