bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67 building syzkaller on 062c9832a6cdb39bf38ad7a6dad51300a2e9a734 testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 0808acc86bddfa18777b23ee4856b996895b034c4c865d37127e4a5565e6bd43 all runs: crashed: BUG: unable to handle kernel paging request in diFree testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26 testing commit 424a46ea058e160ae6fdd0693092ba79da533f26 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: c614ee8053cecf0f20dcb85cb2ec633049bf643f577e7d11aa3afac71aa6adae all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 21m42.965098679s (build: 15m2.303096895s, test: 6m16.402946332s) 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