bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636
building syzkaller on f24824d3d54060a7d878eeb35c47f85dab84966a
testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 99ecaf848c3ba48cac805fbe5ade82539e9e67de7d7ae14ec82aee024ec8abc9
run #0: crashed: KASAN: stack-out-of-bounds Read 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: general protection fault in __tcf_idr_release
run #4: crashed: general protection fault in __tcf_idr_release
run #5: crashed: KASAN: use-after-free Read in tcf_action_destroy
run #6: crashed: general protection fault in __tcf_idr_release
run #7: crashed: general protection fault in __tcf_idr_release
run #8: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #9: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #10: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #11: crashed: general protection fault in __tcf_idr_release
run #12: crashed: general protection fault in __tcf_idr_release
run #13: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #14: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #15: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #16: crashed: general protection fault in __tcf_idr_release
run #17: crashed: general protection fault in __tcf_idr_release
run #18: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #19: crashed: general protection fault in __tcf_idr_release
testing current HEAD 8ea4f73cfa7e0555dc03aedde52db54a6587ab43
testing commit 8ea4f73cfa7e0555dc03aedde52db54a6587ab43
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 142006a48d6c245c7444c3dea3643deb974f6065dbadc49e3438825596eca254
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m39.907018232s (build: 20m24.097481385s, test: 6m50.724489256s)
the crash still happens on HEAD
commit msg: Linux 4.14.247
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 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: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout