bisecting fixing commit since 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
building syzkaller on 44068e196185e2f5a7c94629b6245cdde008b140
testing commit 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7b678505fb86d02f5728eac8589c1a59f29015036a4326285478b9eb1e722118
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 8034e99d1a010a795b979582c0b2370584d8abf4
testing commit 8034e99d1a010a795b979582c0b2370584d8abf4
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 13fbc219183b66d5ea4ee8c18118d770309b95f72c173de47ff199cb45918c5e
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m40.451076777s (build: 16m14.828661948s, test: 6m45.766782066s)
the crash still happens on HEAD
commit msg: Linux 4.14.266
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
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1