bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 18e33098d58c8738cc3b678346141b74d34d4e30
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8 with gcc (GCC) 8.4.1 20210217
kernel signature: 902b59de58dc8bbdbcb4699134ed9b63330a9912660681b38002e1e840979c27
all runs: crashed: kernel BUG in dnotify_free_mark
testing current HEAD ad8397a84e1e425e3f8221638cee2bfa237d9b2c
testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c with gcc (GCC) 8.4.1 20210217
kernel signature: 62a52d5589b3b9d3b998872a531b512810c585295941add90bd93789e0a6cd60
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m4.417151809s (build: 17m22.45906447s, test: 6m20.24738603s)
the crash still happens on HEAD
commit msg: Linux 4.14.234
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout