bisecting fixing commit since 46914f96189be290174e378c6bf9ccadfdb9ca1e building syzkaller on 6972b10616d785401dea17cec890cca8916424a7 testing commit 46914f96189be290174e378c6bf9ccadfdb9ca1e compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 8f1dd98e0c3da03c48b0e623dc9024b61a38165c801f3be804190e101cc2e7b5 all runs: crashed: unregister_netdevice: waiting for DEV to become free testing current HEAD b8f3be299d5176348b15cc59d55b85faa3dece68 testing commit b8f3be299d5176348b15cc59d55b85faa3dece68 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 949a1e2639a5e078f958b7e76de678239f83c0d3a17f6880facaecf038735fef all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 29m18.84457908s (build: 22m19.287181789s, test: 6m17.914363716s) the crash still happens on HEAD commit msg: Linux 4.14.282 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout