bisecting fixing commit since cd529693461026636f76d0395a42cb2439bbd368
building syzkaller on 098b5d530648147c744a7c2eb8b78c1307f9d3ce
testing commit cd529693461026636f76d0395a42cb2439bbd368
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7fb995eaab39c6b27dd9d2cf09598e5eaef14b7558d60ad52d38da2c8b644cb8
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD f051383ef03bde49ca992f297ec80757a702e774
testing commit f051383ef03bde49ca992f297ec80757a702e774
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f80c66b4151051d4497af986a785e5b3a4e4feb892f91cd14ed2899d780ddcd8
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m14.385082061s (build: 19m53.447959845s, test: 6m16.680948213s)
the crash still happens on HEAD
commit msg: Linux 4.14.285
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