bisecting fixing commit since 2f166cdcf8a92fcf85524f2b5526cb28e16f0a60 building syzkaller on 0ea7a8875d3f20d3bdf6323495521b62ef71878c testing commit 2f166cdcf8a92fcf85524f2b5526cb28e16f0a60 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d7eea5bc5b3306751d8d095ae3c4989184a1579860b5cf64455b3150fb3a3928 run #0: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #1: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #2: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #3: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #4: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #5: crashed: WARNING: ODEBUG bug in tipc_subscrb_subscrp_delete run #6: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #7: crashed: WARNING: ODEBUG bug in tipc_subscrb_subscrp_delete run #8: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #9: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #10: crashed: WARNING: ODEBUG bug in tipc_subscrb_subscrp_delete run #11: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #12: crashed: WARNING: ODEBUG bug in tipc_subscrb_subscrp_delete run #13: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #14: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #15: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #16: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #17: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #18: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb run #19: crashed: KASAN: use-after-free Read in tipc_subscrb_rcv_cb testing current HEAD eb045674aab31aa55a4f9aec27cce36e3d946a21 testing commit eb045674aab31aa55a4f9aec27cce36e3d946a21 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 88135b6b55c150fef2a884b74bff00e39f09641595d89169f0251cc6fcc1c720 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 22m52.19528401s (build: 15m41.230485042s, test: 6m36.979666931s) the crash still happens on HEAD commit msg: Linux 4.14.272 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout