bisecting fixing commit since 29c52025152bab4c557d8174da58f1a4c8e70438 building syzkaller on fcc6d71be2c3ce7d9305c04fc2e87af554571bac testing commit 29c52025152bab4c557d8174da58f1a4c8e70438 with gcc (GCC) 8.4.1 20210217 kernel signature: 434a18a6da2c63ae4313b9543ac464ca228e755a63556200e59165017c93988f all runs: crashed: SYZFAIL: clone failed testing current HEAD a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd testing commit a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd with gcc (GCC) 8.4.1 20210217 kernel signature: 1bad59ba1890cb8ac429e7af9a3bbaebf2bd174b700c849bdcf1f71765ab54a2 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 25m54.145659992s (build: 18m37.166917394s, test: 6m48.379325616s) the crash still happens on HEAD commit msg: Linux 4.14.235 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: hci3 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout