bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67 building syzkaller on 062c9832a6cdb39bf38ad7a6dad51300a2e9a734 testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6d41753fabe287eb0143acec2532c682fcee6b37ce27d3eb5d87c69aa89e6233 all runs: crashed: BUG: unable to handle kernel paging request in diFree testing current HEAD 690285a9380d183e6d286d90e458fa7c3f97eca2 testing commit 690285a9380d183e6d286d90e458fa7c3f97eca2 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3f64cecf467da60e3ca448baa0d75be3ddcebcf01bcb31c8a80875f6e258a857 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 27m20.928030066s (build: 20m19.56967866s, test: 6m14.998582021s) the crash still happens on HEAD commit msg: Linux 4.14.279 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