bisecting fixing commit since f96eb53cbd76415edfba99c2cfa88567a885a428
building syzkaller on d236a457274375e5273ac4e958722659929c469f
testing commit f96eb53cbd76415edfba99c2cfa88567a885a428
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: eb1ac99dc7f118226c3282d52e28af9e7b08520b961d8f6700c0cbb745cb8151
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD e853993d29aa42ac4b3c2912db975a0a66d7a5b0
testing commit e853993d29aa42ac4b3c2912db975a0a66d7a5b0
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3810c9054546e3fe71bdb6e57f50ee8f1ae7d7a42fd9c6aafabf75a6fd1c13ad
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m44.569956355s (build: 14m46.457263377s, test: 6m26.45438771s)
the crash still happens on HEAD
commit msg: Linux 4.14.269
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout