bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636 building syzkaller on 8b3eaf58f88f0e0a776866110d9baf8367dde8f0 testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d4beb498398a92fc3e464b19cbd848b22448a7325cb0f29df79f7035e905d005 all runs: crashed: WARNING in ieee80211_check_rate_mask testing current HEAD f051383ef03bde49ca992f297ec80757a702e774 testing commit f051383ef03bde49ca992f297ec80757a702e774 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: bd433e4ebc59dfa9442c6fc627a1cb1b6b3d372c79076b36898bf13c0ffb6340 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 21m49.109433945s (build: 14m41.429406878s, test: 6m39.278402943s) the crash still happens on HEAD commit msg: Linux 4.14.285 crash: unregister_netdevice: waiting for DEV to become free IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready can: request_module (can-proto-0) failed. 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: 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