bisecting fixing commit since 004bfaafc45ccc95366b37c9b9e7844cd5156368
building syzkaller on 89bc860804252dbacb8c2bea60b9204859f4afd7
testing commit 004bfaafc45ccc95366b37c9b9e7844cd5156368
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4945d2fd2e1daf0e57f86c557656a91cd4934ec710b21a1ad78c3db0689b927d
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: 3200779b427aaa5320038465d49175db77fb827c42f71874a52e3dabdc3bd20a
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m48.264145427s (build: 17m44.043211s, test: 6m31.611152369s)
the crash still happens on HEAD
commit msg: Linux 4.14.280
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout