bisecting fixing commit since 74766a973637a02c32c04c1c6496e114e4855239
building syzkaller on 53c67432e69b0df4ff64448b944cbffaecec20f4
testing commit 74766a973637a02c32c04c1c6496e114e4855239
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b786b3eb3c13c76d2aaaf4d0f28a5eb5a1d532e6cd94bf8c5573346796634b91
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26
testing commit 424a46ea058e160ae6fdd0693092ba79da533f26
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4befd2cfdfd5b46bc3700b074d28f99268a01fe87a3347aaeccad3aea2ba7c94
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m56.119756569s (build: 19m3.214171933s, test: 6m25.875722541s)
the crash still happens on HEAD
commit msg: Linux 4.14.288
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