bisecting fixing commit since 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae
building syzkaller on bca53db974f570410921f59b8c2c59a3d263cb44
testing commit 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae with gcc (GCC) 8.4.1 20210217
kernel signature: 27ec99f3a7d129973d572506a965869c831a6835a33ec5a0a370a97b6e25e1c8
run #0: crashed: WARNING in corrupted
run #1: crashed: WARNING in md_ioctl
run #2: crashed: KASAN: use-after-free Read in disk_unblock_events
run #3: crashed: KASAN: use-after-free Read in disk_unblock_events
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: KASAN: use-after-free Read in disk_unblock_events
run #9: crashed: KASAN: use-after-free Read in disk_unblock_events
run #10: crashed: KASAN: use-after-free Read in disk_unblock_events
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: 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 96afcb20f36f07683aaa342e592ea8ec76fd1fa6
testing commit 96afcb20f36f07683aaa342e592ea8ec76fd1fa6 with gcc (GCC) 8.4.1 20210217
kernel signature: c9c9aac6301c27eceb5dffddba340174f08b0d8bfd94b995484fa0ac3b76ac36
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m12.6435021s (build: 16m17.241857694s, test: 6m32.931022233s)
the crash still happens on HEAD
commit msg: Linux 4.14.233
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout