bisecting fixing commit since d7e78d08fa77acdea351c8f628f49ca9a0e1029a building syzkaller on abf9ba4fc75d9b29af15625d44dcfc1360fad3b7 testing commit d7e78d08fa77acdea351c8f628f49ca9a0e1029a compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 97ad2935cac5faed1c939ca5a012bab2bdae792ee30730aae934404dd8f2243e all runs: crashed: possible deadlock in rtnl_lock testing current HEAD b8f3be299d5176348b15cc59d55b85faa3dece68 testing commit b8f3be299d5176348b15cc59d55b85faa3dece68 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 0778df90cdb703f2613f6aa3e18f174b36d336c4c442b6f13148a18b4548ec46 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 24m25.27984562s (build: 17m21.72993106s, test: 6m32.736753382s) 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