bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d66de1c46758fc0bd4608eaba8d41736c9af4bcecfb2eaf29913ea4d969976ca
run #0: crashed: general protection fault in __tcf_idr_release
run #1: crashed: general protection fault in __tcf_idr_release
run #2: crashed: general protection fault in __tcf_idr_release
run #3: crashed: KASAN: stack-out-of-bounds Read 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: general protection fault in __tcf_idr_release
run #11: crashed: BUG: unable to handle kernel paging request 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: general protection fault in __tcf_idr_release
run #16: crashed: KASAN: stack-out-of-bounds Read in tcf_action_destroy
run #17: crashed: general protection fault in __tcf_idr_release
run #18: crashed: KASAN: use-after-free Read in tcf_action_destroy
run #19: crashed: BUG: unable to handle kernel paging request in tcf_action_destroy
testing current HEAD 5f9f3b0057d5c5782985784ba0159b05b4083055
testing commit 5f9f3b0057d5c5782985784ba0159b05b4083055
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fc9dc1db6df1e8bc65bcaff6d23f7837a0299828d444d54af4a2c260ec22d325
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m6.403476118s (build: 14m57.243960607s, test: 8m43.076650527s)
the crash still happens on HEAD
commit msg: Linux 4.14.255
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 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: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout