bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8 with gcc (GCC) 8.4.1 20210217
kernel signature: ca1169eee2f1e7792aacca38a10841d2234f1e3378f29cbee6afd81d6bb18497
run #0: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #1: crashed: BUG: spinlock bad magic 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: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #5: crashed: general protection fault in __tcf_idr_release
run #6: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
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: 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: out-of-bounds Read in tcf_action_destroy
run #14: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #15: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #16: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
run #17: crashed: general protection fault in __tcf_idr_release
run #18: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #19: crashed: general protection fault in __tcf_idr_release
testing current HEAD cfb41ef9deb1e6572ac218ddfcec9567e5d1c101
testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217
kernel signature: cc926424228ddcda8b086ded495d7ec4a8640806e5a904e1fb332e9566ececbf
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m23.717049448s (build: 19m42.981573143s, test: 6m13.640803833s)
the crash still happens on HEAD
commit msg: Linux 4.14.237
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 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: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout