bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 340ea5301c27db4a3678f13acc430e04706a0cc6
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f1a229c4d4e07ae24248148a98aa0bcd0e9bd9e63bad237a903378b82f37779d
all runs: crashed: divide error in fbcon_switch
testing current HEAD f051383ef03bde49ca992f297ec80757a702e774
testing commit f051383ef03bde49ca992f297ec80757a702e774
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 711b1286d30538e8bba82a281b492142e0deb00794f0bcdc3fe01f9159112b39
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m15.770201275s (build: 15m14.685412175s, test: 6m25.735803295s)
the crash still happens on HEAD
commit msg: Linux 4.14.285
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1