bisecting fixing commit since 21ad423fe5210f5aa50bd43f9ae99b655090a227
building syzkaller on 0b33604d8e2793b82ec89abecf82d92b82e3d410
testing commit 21ad423fe5210f5aa50bd43f9ae99b655090a227
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ff886894c8d7fff5c05f7bac23e72f37515000a80f7c7eea6bec8356ab9f14e4
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 569d1abf9402e943bf00821a6e0b8e13bffde699
testing commit 569d1abf9402e943bf00821a6e0b8e13bffde699
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b3bc430a4fb94efcb1f7ba6664f448dc9953a06c4006f3d276c38952832fea49
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m36.038324516s (build: 17m26.317628372s, test: 6m34.279583093s)
the crash still happens on HEAD
commit msg: Linux 4.14.278
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