bisecting fixing commit since 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae
building syzkaller on bca53db974f570410921f59b8c2c59a3d263cb44
testing commit 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae with gcc (GCC) 8.4.1 20210217
kernel signature: 88b2cb249d4548358427a5dae1b488cd674bb4dfaa7d659880311066d822f3fa
run #0: crashed: WARNING in md_ioctl
run #1: crashed: WARNING in md_ioctl
run #2: crashed: KASAN: use-after-free Read in disk_unblock_events
run #3: crashed: WARNING in md_ioctl
run #4: crashed: WARNING in md_ioctl
run #5: crashed: KASAN: use-after-free Read in disk_unblock_events
run #6: crashed: KASAN: use-after-free Read in disk_unblock_events
run #7: crashed: WARNING in md_ioctl
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: KASAN: use-after-free Read in disk_unblock_events
run #12: crashed: WARNING in md_ioctl
run #13: crashed: WARNING in md_ioctl
run #14: crashed: WARNING in md_ioctl
run #15: crashed: WARNING in md_ioctl
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 cfb41ef9deb1e6572ac218ddfcec9567e5d1c101
testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217
kernel signature: 442adeaad08ec67978bb83fd88dff9d61e920740ae12aa107d332ae87a07ad7d
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m5.605258065s (build: 14m50.946040291s, test: 5m53.190930632s)
the crash still happens on HEAD
commit msg: Linux 4.14.237
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: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout