bisecting fixing commit since af1af6ebca0e28a97e5f802b9da695678fcd226a
building syzkaller on 89bc860804252dbacb8c2bea60b9204859f4afd7
testing commit af1af6ebca0e28a97e5f802b9da695678fcd226a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0bbce9622c1cb173c0200c76271621c30cdf76ab0af6e75d5b872d2ae7c8017d
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD dffb5c6ff09c51ed585e3e7665143df103867fc8
testing commit dffb5c6ff09c51ed585e3e7665143df103867fc8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 766d16a4b88a37cf7008903ff403dad58db30702696f65e97e58c4842d629b8a
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m3.748190617s (build: 22m1.065137251s, test: 6m20.2645735s)
the crash still happens on HEAD
commit msg: Linux 4.14.280
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout