bisecting fixing commit since ad8397a84e1e425e3f8221638cee2bfa237d9b2c
building syzkaller on 858ea628800647d5e5b68b11441e42b8ef5652c1
testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 82a7c552bc7c4e58e021b49b89f69bcdcd4358d037fbf3287d87058f376a5723
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 690285a9380d183e6d286d90e458fa7c3f97eca2
testing commit 690285a9380d183e6d286d90e458fa7c3f97eca2
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 87fca10759c3aaf8e47ddf80bb4863d58fd99cc8073cfef97d613cad98491cb4
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m11.501187116s (build: 17m22.376493875s, test: 6m29.342869939s)
the crash still happens on HEAD
commit msg: Linux 4.14.279
crash: unregister_netdevice: waiting for DEV to become free
syz-executor.0 (7975) used greatest stack depth: 23784 bytes left
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