bisecting fixing commit since 2f166cdcf8a92fcf85524f2b5526cb28e16f0a60 building syzkaller on abf9ba4fc75d9b29af15625d44dcfc1360fad3b7 testing commit 2f166cdcf8a92fcf85524f2b5526cb28e16f0a60 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 89d61defc732fad1558a73499abe66f3180d413f1bc474322e56ac07561be958 all runs: crashed: general protection fault in skb_release_data testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26 testing commit 424a46ea058e160ae6fdd0693092ba79da533f26 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 39e2ab555c38429e5e7b4e2eb3dd568a9c3b9070dd447eba6d11fb68ddbee6fe all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 25m25.537808096s (build: 17m57.810054273s, test: 6m44.352441655s) the crash still happens on HEAD commit msg: Linux 4.14.288 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