bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0607c5afa75dff86a2cbf83838ee8f94ea8bf6ae0e3b6bd73f1b66c18bf43052
run #0: crashed: general protection fault in __tcf_idr_release
run #1: crashed: general protection fault in __tcf_idr_release
run #2: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
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: general protection fault in __tcf_idr_release
run #8: crashed: general protection fault in __tcf_idr_release
run #9: crashed: general protection fault in __tcf_idr_release
run #10: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
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: 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: general protection fault in __tcf_idr_release
run #17: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #18: crashed: KASAN: out-of-bounds Read in tcf_action_destroy
run #19: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: daf2b2a91382b6e819093d8ecf472c48b29485fce96d9e268507c323297253a4
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m35.25737199s (build: 15m43.358532762s, test: 6m28.666269103s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
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: hci5 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: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout