bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 340ea5301c27db4a3678f13acc430e04706a0cc6
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 881f2cc811d3fe6201ad9bde951d7a6fad1be1ed59cbd339c0486802b86eb12a
all runs: crashed: divide error in fbcon_switch
testing current HEAD 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
testing commit 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 940bf38b34da42d5dbe115b91d20444eae12d692e0f05e15f0afc7763b4e51f9
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m35.106635573s (build: 16m54.580693736s, test: 6m10.768676907s)
the crash still happens on HEAD
commit msg: Linux 4.14.276
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1