bisecting fixing commit since 29c52025152bab4c557d8174da58f1a4c8e70438 building syzkaller on fcc6d71be2c3ce7d9305c04fc2e87af554571bac testing commit 29c52025152bab4c557d8174da58f1a4c8e70438 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 1edb3110a0151341fa9a19d649146a20db2ac2e189b4dba0eec7c5ac04ec0f99 all runs: crashed: SYZFAIL: clone failed testing current HEAD cd529693461026636f76d0395a42cb2439bbd368 testing commit cd529693461026636f76d0395a42cb2439bbd368 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f8cfe9b328c19f340adf6fcb2eb3bdf2302960a852e7ccde8d53b51540579e34 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 28m35.84067347s (build: 21m5.911515281s, test: 6m57.858288169s) the crash still happens on HEAD commit msg: Linux 4.14.253 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: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci2 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 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 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: hci2 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout