bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636
building syzkaller on f24824d3d54060a7d878eeb35c47f85dab84966a
testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d78a51ceba78ba4ec67f87523adf1e137f3b2f0bcd3285af0939f3fbbb67d0bb
run #0: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #1: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
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: BUG: unable to handle kernel paging request in tcf_action_destroy
run #8: crashed: KASAN: out-of-bounds Read 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: BUG: unable to handle kernel paging request in tcf_action_destroy
run #13: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #14: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #15: crashed: KASAN: slab-out-of-bounds Read 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: BUG: unable to handle kernel paging request in tcf_action_destroy
testing current HEAD 66722c42ec916e92cadda46316f8f6e3fdcaedc6
testing commit 66722c42ec916e92cadda46316f8f6e3fdcaedc6
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2d67fc6c228d2a42f8ae1c1c16fe9a86b9cb163b1920e6c3c5cf731b6f0c963f
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m51.682030917s (build: 14m41.856934859s, test: 6m43.677567394s)
the crash still happens on HEAD
commit msg: Linux 4.14.256
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout