bisecting fixing commit since 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae
building syzkaller on bca53db974f570410921f59b8c2c59a3d263cb44
testing commit 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7ef64d27d420c1ebda0891b33881d08cdcb08f5ecdf6ededd6f75d86c9de6ee1
run #0: crashed: WARNING in md_ioctl
run #1: crashed: WARNING in md_ioctl
run #2: crashed: WARNING in md_ioctl
run #3: crashed: WARNING in md_ioctl
run #4: crashed: WARNING in md_ioctl
run #5: crashed: WARNING in md_ioctl
run #6: crashed: WARNING in md_ioctl
run #7: crashed: KASAN: use-after-free Read in disk_unblock_events
run #8: crashed: WARNING in md_ioctl
run #9: crashed: KASAN: use-after-free Read in disk_unblock_events
run #10: crashed: WARNING in md_ioctl
run #11: crashed: WARNING in md_ioctl
run #12: crashed: WARNING in md_ioctl
run #13: crashed: WARNING in md_ioctl
run #14: crashed: WARNING in md_ioctl
run #15: crashed: KASAN: use-after-free Read in disk_unblock_events
run #16: crashed: WARNING in md_ioctl
run #17: crashed: WARNING in md_ioctl
run #18: crashed: WARNING in md_ioctl
run #19: crashed: WARNING in md_ioctl
testing current HEAD 2760370b164918bd9311e6bf445cf4c118d3463c
testing commit 2760370b164918bd9311e6bf445cf4c118d3463c
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3239239383519f71b75acab31523228e17b478c0e9c3ea8f03e1d93032efdbae
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m41.205629061s (build: 14m35.804489241s, test: 6m40.652613449s)
the crash still happens on HEAD
commit msg: Linux 4.14.252
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f 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 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout