bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636
building syzkaller on f24824d3d54060a7d878eeb35c47f85dab84966a
testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ca24ee8883785a1f898e687f06c0b597a6b57a304dc2efa07fbec557c755dc66
run #0: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #1: crashed: general protection fault in __tcf_idr_release
run #2: crashed: general protection fault in __tcf_idr_release
run #3: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #4: crashed: general protection fault in __tcf_idr_release
run #5: crashed: general protection fault in __tcf_idr_release
run #6: crashed: general protection fault in __tcf_idr_release
run #7: crashed: general protection fault in __tcf_idr_release
run #8: crashed: general protection fault in __tcf_idr_release
run #9: crashed: general protection fault in __tcf_idr_release
run #10: crashed: general protection fault in __tcf_idr_release
run #11: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #12: crashed: general protection fault in __tcf_idr_release
run #13: crashed: general protection fault in __tcf_idr_release
run #14: crashed: general protection fault in __tcf_idr_release
run #15: crashed: general protection fault in __tcf_idr_release
run #16: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #17: crashed: general protection fault in __tcf_idr_release
run #18: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #19: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
testing current HEAD 4ba8e26127c393c32776dff6d79c5b82de6dc542
testing commit 4ba8e26127c393c32776dff6d79c5b82de6dc542
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 28c3e2a494f007cf15a6d43c070cc2f0f67221f62540d6ab4a4f3554a06485c6
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m29.814897014s (build: 16m57.851190755s, test: 7m8.875651564s)
the crash still happens on HEAD
commit msg: Linux 4.14.262
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout