bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e846f5c4783118cc7f67389ec8bc1929d2a24b98fa1bcd8fae5881f5e8fd57b9
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: 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: KASAN: out-of-bounds Read in tcf_action_destroy
run #7: crashed: general protection fault in __tcf_idr_release
run #8: crashed: KASAN: slab-out-of-bounds Read in tcf_action_destroy
run #9: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #10: crashed: general protection fault in __tcf_idr_release
run #11: crashed: general protection fault in __tcf_idr_release
run #12: crashed: general protection fault in __tcf_idr_release
run #13: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #14: crashed: general protection fault in __tcf_idr_release
run #15: crashed: general protection fault in __tcf_idr_release
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: KASAN: use-after-free Read in tcf_action_destroy
run #19: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
testing current HEAD 964f3712e6a7447d9d3203f2be3f6c50e78ea179
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 389f5d0b479b71e4dcb09a113a5f9814779bbb6eaf00061d6c436cd3cf5c6bee
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m2.086323824s (build: 20m48.209339656s, test: 6m40.278793164s)
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: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout