bisecting fixing commit since dffb5c6ff09c51ed585e3e7665143df103867fc8
building syzkaller on cb1ac2e75516d296f0ed6884292eeb72916a6271
testing commit dffb5c6ff09c51ed585e3e7665143df103867fc8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b9821781adc93cc560accee1a9eb7de73536ba48ea76dc12e6f2fdbfc8ced62e
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: b608250e898d9875b998e0eee8f19376f8a039db269ba5ba2fd207c5e80e007c
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m3.588562016s (build: 14m14.32965286s, test: 6m26.683131695s)
the crash still happens on HEAD
commit msg: Linux 4.14.284
crash: unregister_netdevice: waiting for DEV to become free
IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
syz-executor.0 (7982) used greatest stack depth: 24304 bytes left
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