bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636 building syzkaller on 96e03c1c31a7f2e7f80b2d8b9f3df117df5030d1 testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 1986649e6e80d3e24c116f5fd173db2a0515850d03db2f111454e6965d609261 all runs: crashed: WARNING in sta_info_alloc testing current HEAD 2760370b164918bd9311e6bf445cf4c118d3463c testing commit 2760370b164918bd9311e6bf445cf4c118d3463c compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 2f2fae31f2a3240d23c02fbf1c860ee4fca5abd10825df6796c3944091d43936 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 23m24.303606908s (build: 16m21.431417874s, test: 6m40.642015619s) the crash still happens on HEAD commit msg: Linux 4.14.252 crash: unregister_netdevice: waiting for DEV to become free can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout