bisecting fixing commit since a6ca7c65b1376f7bb14979cb745d3da73c8de948
building syzkaller on e1768e9c12f6025bdcfe8a957808608d499692b8
testing commit a6ca7c65b1376f7bb14979cb745d3da73c8de948
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 34f21da379e19cc486180e61bae29a3ec660bb29e7a97217949d40f49f51d420
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: 19f85fa154f9a80c86d951dd63686006da08533511dcc69661add9cc7ecf8754
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m54.396317817s (build: 23m39.328011806s, test: 6m15.920948689s)
the crash still happens on HEAD
commit msg: Linux 4.14.280
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