bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636
building syzkaller on f24824d3d54060a7d878eeb35c47f85dab84966a
testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0143201992e4d1f7ee1d1950679f0ab8681ab9f57bdfbef19934c4947fe3bc16
run #0: crashed: general protection fault in __tcf_idr_release
run #1: crashed: general protection fault in __tcf_idr_release
run #2: crashed: general protection fault in __tcf_idr_release
run #3: crashed: general protection fault in __tcf_idr_release
run #4: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #5: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #6: crashed: general protection fault in __tcf_idr_release
run #7: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #8: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #9: crashed: general protection fault in __tcf_idr_release
run #10: crashed: general protection fault in __tcf_idr_release
run #11: crashed: general protection fault in __tcf_idr_release
run #12: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #13: crashed: general protection fault in __tcf_idr_release
run #14: crashed: general protection fault in __tcf_idr_release
run #15: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #16: crashed: general protection fault in __tcf_idr_release
run #17: crashed: KASAN: out-of-bounds Read in tcf_action_destroy
run #18: crashed: general protection fault in __tcf_idr_release
run #19: crashed: general protection fault in __tcf_idr_release
testing current HEAD 964f3712e6a7447d9d3203f2be3f6c50e78ea179
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 544b69d5a66df8238e416e80c52630ed9844c204d55f8a1278bccd4e1213d130
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m42.883427962s (build: 14m55.776622041s, test: 8m21.37126589s)
the crash still happens on HEAD
commit msg: Linux 4.14.240
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout