bisecting fixing commit since 958e517f4e16952e9a2e2d58fd32d28ae4e23dda building syzkaller on c59079a693ad1d89c782f7db14b9f1c5629e2abc testing commit 958e517f4e16952e9a2e2d58fd32d28ae4e23dda compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: a3ecfea8c50202663c358c0dd56eb60b9b9e39607d8b4c68c7326e0daad91a7b all runs: crashed: KASAN: use-after-free Read in search_by_entry_key testing current HEAD 4ba8e26127c393c32776dff6d79c5b82de6dc542 testing commit 4ba8e26127c393c32776dff6d79c5b82de6dc542 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 262c3dac7af271db29e79763562ffcd29b2d89552d5178703bd9fcf9d6eba88c all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 31m13.090964888s (build: 23m35.813080607s, test: 6m55.778815095s) the crash still happens on HEAD commit msg: Linux 4.14.262 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1