bisecting fixing commit since ad8397a84e1e425e3f8221638cee2bfa237d9b2c
building syzkaller on 858ea628800647d5e5b68b11441e42b8ef5652c1
testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 215a45f879f1f6ba94b9b6395ab5ebc4b3745537e237e40fbf9ef79ae7aa516b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 8ea4f73cfa7e0555dc03aedde52db54a6587ab43
testing commit 8ea4f73cfa7e0555dc03aedde52db54a6587ab43
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 09830fc565c2ed4d6a953f747abab5644ca58b296d5cfffbcfac6e4da86c4f8b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m36.544812665s (build: 19m47.361678987s, test: 6m19.972995474s)
the crash still happens on HEAD
commit msg: Linux 4.14.247
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout