bisecting fixing commit since 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79 building syzkaller on 4c37c133e4bf703d023995535f1e264d8658e08e testing commit 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d60d21bcf103d5c2a1ecca2802c5194e0de5128367752bdff0d9f17f9d54c402 all runs: crashed: SYZFAIL: command refers to bad result testing current HEAD a6ca7c65b1376f7bb14979cb745d3da73c8de948 testing commit a6ca7c65b1376f7bb14979cb745d3da73c8de948 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 57939f9a69ef1dfe02c275608a7f3273ecbad2a3a960b954710cc80a0aca5e8e all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 30m18.625346693s (build: 22m55.014163511s, test: 6m37.541362854s) the crash still happens on HEAD commit msg: Linux 4.14.260 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout