bisecting fixing commit since 964f3712e6a7447d9d3203f2be3f6c50e78ea179
building syzkaller on 4d1b57d4d1aa7f8938163f8debd9293c062482b0
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: acf1a9c272c50e72e26af4f4456b78ad4b249d2f4fc22c3fc49397d167ceaf81
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD fa33f9094f36943ea32f7fbe323293b62e96151d
testing commit fa33f9094f36943ea32f7fbe323293b62e96151d
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f75e69bd4482c565f0e0398d340111b6d32b548a5000274e86f570714d8136f4
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m54.344526872s (build: 15m51.135574371s, test: 6m35.195944122s)
the crash still happens on HEAD
commit msg: Linux 4.14.268
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout