bisecting fixing commit since 4ba8e26127c393c32776dff6d79c5b82de6dc542
building syzkaller on 214351e168def9426c79e1f65a93ddb112cee906
testing commit 4ba8e26127c393c32776dff6d79c5b82de6dc542
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 809100bd795020a6b16bf62ee7f92a6e714954fd8aee1c20b2d2220a30a94b3a
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: 83fc7ed0ab41a864e0150648eff3b03d224f7276288c4e5cce6847c90b73803b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 20m53.525892596s (build: 13m41.889642592s, test: 6m33.33340685s)
the crash still happens on HEAD
commit msg: Linux 4.14.285
crash: unregister_netdevice: waiting for DEV to become free
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
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