EXT4-fs: Ignoring removed bh option
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5962 at fs/ext4/mballoc.c:2531 ext4_mb_complex_scan_group+0xd64/0xf30 fs/ext4/mballoc.c:2531
Modules linked in:
CPU: 1 UID: 0 PID: 5962 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ext4_mb_complex_scan_group+0xd64/0xf30 fs/ext4/mballoc.c:2531
Code: 81 c4 c8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 01 f8 cc 08 cc e8 1b 97 43 ff 90 0f 0b 90 e9 3d fe ff ff e8 0d 97 43 ff 90 <0f> 0b 65 48 8b 05 62 e3 f1 0f 48 3b 84 24 c0 00 00 00 75 20 90 eb
RSP: 0018:ffffc90003c069c8 EFLAGS: 00010293
RAX: ffffffff827c6cb3 RBX: 00000000fffffff8 RCX: ffff888114d61d00
RDX: 0000000000000000 RSI: 00000000fffffff8 RDI: 0000000000000001
RBP: ffff88816ef5b000 R08: ffff888114d61d00 R09: 0000000000000005
R10: 0000000000000004 R11: 0000000000000000 R12: ffff888166fec000
R13: ffff888166fec638 R14: ffff8881b7ac0000 R15: dffffc0000000000
FS:  0000555585e78500(0000) GS:ffff8882a9f3b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ec63fff CR3: 000000011407a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __ext4_mb_scan_group fs/ext4/mballoc.c:2664 [inline]
 ext4_mb_scan_group+0x116e/0x18e0 fs/ext4/mballoc.c:2955
 ext4_mb_scan_groups_linear+0xe8/0x360 fs/ext4/mballoc.c:1146
 ext4_mb_scan_groups fs/ext4/mballoc.c:1180 [inline]
 ext4_mb_regular_allocator+0x90e/0x2970 fs/ext4/mballoc.c:3026
 ext4_mb_new_blocks+0xd11/0x4720 fs/ext4/mballoc.c:6320
 ext4_ext_map_blocks+0x161a/0x6ac0 fs/ext4/extents.c:4383
 ext4_map_create_blocks fs/ext4/inode.c:609 [inline]
 ext4_map_blocks+0x860/0x1740 fs/ext4/inode.c:811
 _ext4_get_block+0x200/0x4c0 fs/ext4/inode.c:910
 ext4_get_block_unwritten+0x2e/0x100 fs/ext4/inode.c:943
 ext4_block_write_begin+0x993/0x1710 fs/ext4/inode.c:1198
 ext4_write_begin+0xc04/0x19a0 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x445/0xda0 fs/ext4/inode.c:3129
 generic_perform_write+0x2c5/0x900 mm/filemap.c:4254
 ext4_buffered_write_iter+0xce/0x3a0 fs/ext4/file.c:299
 ext4_file_write_iter+0x298/0x1bc0 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3f93f8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff83277a88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3f941e5fa0 RCX: 00007f3f93f8f749
RDX: 0000000000001006 RSI: 0000200000000940 RDI: 0000000000000005
RBP: 00007f3f94013f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3f941e5fa0 R14: 00007f3f941e5fa0 R15: 0000000000000003
 </TASK>