bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on 77e2b66864e69c17416614228723a1ebd3581ddc
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d51e4824934b0c5c7d57f081084371290312604b9f5d2fec88649a456cc188f0
run #0: crashed: kernel BUG in ext4_mb_load_buddy_gfp
run #1: crashed: kernel BUG in corrupted
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 corrupted
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 ext4_mb_load_buddy_gfp
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 a6ca7c65b1376f7bb14979cb745d3da73c8de948
testing commit a6ca7c65b1376f7bb14979cb745d3da73c8de948
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a669919d20663bd56c398719a816173231a0028fc60bca3aa6337bb987c35c34
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m57.659907282s (build: 22m34.972350454s, test: 6m41.691774135s)
the crash still happens on HEAD
commit msg: Linux 4.14.260
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout