EXT4-fs error (device loop0): ext4_mb_generate_buddy:1315: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters
EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28
EXT4-fs (loop0): This should not happen!! Data will be lost

EXT4-fs (loop0): Total free blocks count 0
EXT4-fs (loop0): Free/Dirty block details
EXT4-fs (loop0): free_blocks=4096
EXT4-fs (loop0): dirty_blocks=64
EXT4-fs (loop0): Block reservation details
EXT4-fs (loop0): i_reserved_data_blocks=4
------------[ cut here ]------------
!folio_buffers(folio)
WARNING: fs/ext4/inode.c:4556 at ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:4556, CPU#0: syz.0.0/5343
Modules linked in:
CPU: 0 UID: 0 PID: 5343 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:4556
Code: 7f a3 a3 ff 49 83 3f 00 74 1a e8 44 00 2b ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 3f 16 cc ff e8 2a 00 2b ff 90 <0f> 0b 90 eb e0 e8 1f 00 2b ff 90 0f 0b 90 eb a7 e8 14 00 2b ff 48
RSP: 0018:ffffc9000e447508 EFLAGS: 00010283
RAX: ffffffff829e2176 RBX: ffffea0000304880 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 000000000000570c RDI: 000000000000570d
RBP: 1ffffd4000060910 R08: ffffea0000304887 R09: 1ffffd4000060910
R10: dffffc0000000000 R11: fffff94000060911 R12: ffff88804587a898
R13: 1ffffd4000060911 R14: 0000000000000001 R15: ffffea00003048a8
FS:  00007f01c2bef6c0(0000) GS:ffff88808aa01000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f41739b1720 CR3: 00000000144ec000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 bio_set_pages_dirty+0x36d/0xa70 block/bio.c:1713
 __blkdev_direct_IO+0x92d/0x1100 block/fops.c:266
 blkdev_direct_IO+0x770/0x1840 block/fops.c:447
 blkdev_read_iter+0x249/0x590 block/fops.c:867
 aio_read+0x33a/0x4d0 fs/aio.c:1666
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x774/0x13d0 fs/aio.c:2121
 __do_sys_io_submit fs/aio.c:2180 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2150
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01c1d9fb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f01c2beefe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f01c2026090 RCX: 00007f01c1d9fb19
RDX: 0000200000001180 RSI: 00000000000000ca RDI: 00007f01c2bad000
RBP: 00007f01c1e37af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01c2026128 R14: 00007f01c2026090 R15: 00007ffe01a6bac8
 </TASK>