bisecting fixing commit since 964f3712e6a7447d9d3203f2be3f6c50e78ea179
building syzkaller on 4d1b57d4d1aa7f8938163f8debd9293c062482b0
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b06443a58a67c3d95a1d389297f32483256678210550b21b0cd753544bdbcde9
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
testing commit 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 754e27cc101ef6b6797e65f5d3b7888f95eba4fb5c1f8a1b39eec53735c5b153
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m12.358185166s (build: 18m16.280679901s, test: 6m16.191522711s)
the crash still happens on HEAD
commit msg: Linux 4.14.281
crash: unregister_netdevice: waiting for DEV to become free
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