bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6c99eb629636942d557c8338976683591d78c184c3408ff13a3eebeaa0af8950
run #0: crashed: general protection fault in __tcf_idr_release
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: 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: BUG: unable to handle kernel paging request in tcf_action_destroy
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: 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: 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: general protection fault in __tcf_idr_release
run #16: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #17: crashed: BUG: unable to handle kernel paging request 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 eb045674aab31aa55a4f9aec27cce36e3d946a21
testing commit eb045674aab31aa55a4f9aec27cce36e3d946a21
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0b93776f04c04a6324b2d76ad34ae1951155649e39fccdc1b24e5da3bc745cde
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m27.606296164s (build: 17m22.923592625s, test: 6m29.722881001s)
the crash still happens on HEAD
commit msg: Linux 4.14.272
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
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: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout