bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on 77e2b66864e69c17416614228723a1ebd3581ddc
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 with gcc (GCC) 8.4.1 20210217
kernel signature: c9d0ebda1ebe0496e83b8f4da54055e91f10044f436669a63acef352a8189542
run #0: crashed: kernel BUG in corrupted
run #1: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #2: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #3: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #4: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #5: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #6: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #7: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #8: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #9: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #10: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #11: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #12: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #13: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #14: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #15: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #16: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #17: crashed: kernel BUG in corrupted
run #18: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #19: crashed: kernel BUG in ext4_mb_load_buddy_gfp
testing current HEAD 313e82bbefb3d1d926858b58092f5d50f41d924d
testing commit 313e82bbefb3d1d926858b58092f5d50f41d924d with gcc (GCC) 8.4.1 20210217
kernel signature: 8af86b2705633e4ad2d2d477a068ee4d8130450a8c294dda04ec4bf6f1c2901b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m40.482426783s (build: 15m12.815802447s, test: 6m4.050563681s)
the crash still happens on HEAD
commit msg: Linux 4.14.238
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout