bisecting fixing commit since 958e517f4e16952e9a2e2d58fd32d28ae4e23dda
building syzkaller on 6a81331a1d4c744da9204d02ec88d558f7eea9c9
testing commit 958e517f4e16952e9a2e2d58fd32d28ae4e23dda with gcc (GCC) 8.4.1 20210217
kernel signature: 012526ff9e6d0b4617ee515c736c6a7a003315df3473b8be04dcd95f82d7558f
run #0: crashed: KASAN: use-after-free Read in __queue_work
run #1: crashed: KASAN: use-after-free Read in __queue_work
run #2: crashed: KASAN: use-after-free Read in __queue_work
run #3: crashed: WARNING: ODEBUG bug in bt_host_release
run #4: crashed: WARNING: ODEBUG bug in bt_host_release
run #5: crashed: general protection fault in __queue_work
run #6: crashed: WARNING: ODEBUG bug in bt_host_release
run #7: crashed: KASAN: use-after-free Read in __queue_work
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
reproducer seems to be flaky
testing current HEAD 3d3abdc8ebd3c3082e4398fc73ceb4c852b66e85
testing commit 3d3abdc8ebd3c3082e4398fc73ceb4c852b66e85 with gcc (GCC) 8.4.1 20210217
kernel signature: 4dde2067a179d98344ff25c65cd5475ed3589353387237e4ad1c09f5b14f269b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
Reproducer flagged being flaky
revisions tested: 2, total time: 33m11.54917092s (build: 19m59.518404564s, test: 12m40.608528148s)
the crash still happens on HEAD
commit msg: Linux 4.14.236
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout