bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67 building syzkaller on 5ef9c29141f85f210b326ce68718498ae0c1fd35 testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6f48f2582edf62c44840202374167d84c58bf001e437a93f6773804369390930 all runs: crashed: KASAN: slab-out-of-bounds Read in build_segment_manager testing current HEAD 84bae26850e3b384a45f0f9a5f8b3b5983afacd8 testing commit 84bae26850e3b384a45f0f9a5f8b3b5983afacd8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3bd69364981578fff186cdd574171a37f945267c15fe10007602c88aeff7962e all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 28m32.099177282s (build: 20m45.931197205s, test: 7m0.979897744s) the crash still happens on HEAD commit msg: Linux 4.14.284 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