bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6c38daf6f23902766e931249e4d9b02c14be51b71f0fbcdc5b21eb9fd662f40e
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: KASAN: stack-out-of-bounds Read in tcf_action_destroy
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: 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: KASAN: out-of-bounds Read in tcf_action_destroy
run #10: crashed: general protection fault in __tcf_idr_release
run #11: crashed: KASAN: stack-out-of-bounds Read 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: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #16: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #17: crashed: BUG: unable to handle kernel NULL pointer dereference in tcf_action_destroy
run #18: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #19: crashed: general protection fault in __tcf_idr_release
testing current HEAD 74766a973637a02c32c04c1c6496e114e4855239
testing commit 74766a973637a02c32c04c1c6496e114e4855239
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 35c9bd22721629728a56e91c777cc7d689eeb4a1f0e2ed2fd8e8221c0b58a2a1
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m9.110949468s (build: 14m35.30628001s, test: 6m9.900664761s)
the crash still happens on HEAD
commit msg: Linux 4.14.275
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout