bisecting fixing commit since 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
building syzkaller on f752fb536b579822da36383d50f78ff6f912a637
testing commit 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 85edc48e8705ed9984dadf51fcc201063db4265f9278110be8668f1d7fa8437b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD f051383ef03bde49ca992f297ec80757a702e774
testing commit f051383ef03bde49ca992f297ec80757a702e774
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 153c096c34f44246347dd38690acc56ff3f07ac10550da6b78eb0d25fa38c526
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 19m3.554796251s (build: 12m11.751719341s, test: 6m3.127605525s)
the crash still happens on HEAD
commit msg: Linux 4.14.285
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