bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636
building syzkaller on 94942294277bf7550b12322d282159551521258b
testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b80ecc7b9124b3a323e1be52ba6d68fcbfada8e320d5645c7bd4c80aa929510f
all runs: crashed: INFO: task hung in rtnl_lock
testing current HEAD 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
testing commit 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a9d70ba9fb27b33a3b6e1761fd25784a87959eff2bcfc8ee546af4867d487d2c
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m29.118203251s (build: 15m7.577058649s, test: 9m56.143546442s)
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