bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67
building syzkaller on 5abc3f1ab298244473b613c289f1536e366fcf04
testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3bc8b8b68bdbe75d15f4da89eafc2658a860ec492425bd46f808a2d56f93b571
run #0: crashed: KASAN: use-after-free Read in diFree
run #1: crashed: KASAN: use-after-free Read in diFree
run #2: crashed: general protection fault in diFree
run #3: crashed: general protection fault in diFree
run #4: crashed: general protection fault in diFree
run #5: crashed: KASAN: use-after-free Read in diFree
run #6: crashed: general protection fault in diFree
run #7: crashed: KASAN: use-after-free Read in diFree
run #8: crashed: KASAN: use-after-free Read in diFree
run #9: crashed: KASAN: use-after-free Read in diFree
run #10: crashed: general protection fault in diFree
run #11: crashed: general protection fault in diFree
run #12: crashed: KASAN: use-after-free Read in diFree
run #13: crashed: KASAN: use-after-free Read in diFree
run #14: crashed: KASAN: use-after-free Read in diFree
run #15: crashed: general protection fault in diFree
run #16: crashed: KASAN: use-after-free Read in diFree
run #17: crashed: KASAN: use-after-free Read in diFree
run #18: crashed: general protection fault in diFree
run #19: crashed: general protection fault in diFree
testing current HEAD fa33f9094f36943ea32f7fbe323293b62e96151d
testing commit fa33f9094f36943ea32f7fbe323293b62e96151d
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6037b434b49d447b11715d89f6244e0424cfd8cab2101337194c96b4ba52910c
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m59.447911066s (build: 21m59.134482427s, test: 6m34.097765529s)
the crash still happens on HEAD
commit msg: Linux 4.14.268
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout