bisecting fixing commit since 397a88b2cc869c823bf40bc403d36a62afec1edd building syzkaller on d7e4e6046884630f013a35de0d7d8a4e780aa6cc testing commit 397a88b2cc869c823bf40bc403d36a62afec1edd compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d36ef7bece4160c5c4afe36218ca1e777e652d2699e40d3046485687302bdd2d all runs: crashed: SYZFAIL: clone failed testing current HEAD af1af6ebca0e28a97e5f802b9da695678fcd226a testing commit af1af6ebca0e28a97e5f802b9da695678fcd226a compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f29f3c13e34f814cedfd461b2dde56fba3ed9e406f666fdeabe9d96d5cf9108c all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 30m58.169745378s (build: 23m29.509741675s, test: 6m49.917373799s) the crash still happens on HEAD commit msg: Linux 4.14.274 crash: unregister_netdevice: waiting for DEV to become free can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 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: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci0 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: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout