bisecting fixing commit since 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
building syzkaller on 131df97d431404458e805009bda794abfb00f45f
testing commit 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: cd2111be0ded93310b11b6c0ee680a5fe138ebc74192bf062c90a1342816c450
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
testing commit 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c1d05b96c7b742b2b1295200258189ebbc0b620fd4123269e2acad2ab43ed2c7
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m52.53380786s (build: 21m27.73001385s, test: 6m41.426296925s)
the crash still happens on HEAD
commit msg: Linux 4.14.284
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