EXT4-fs (loop0): re-mounted 00000000-0000-0000-0000-000000000000.
loop0: detected capacity change from 512 to 0
EXT4-fs error (device loop0): ext4_get_inode_loc:5054: inode #18: block 9: comm syz.0.0: unable to read itable block
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0) in ext4_reserve_inode_write:6519: IO failure
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0): ext4_dirty_inode:6733: inode #18: comm syz.0.0: mark_inode_dirty error
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0): ext4_get_inode_loc:5054: inode #18: block 9: comm syz.0.0: unable to read itable block
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0) in ext4_reserve_inode_write:6519: IO failure
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0): ext4_dirty_inode:6733: inode #18: comm syz.0.0: mark_inode_dirty error
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0): ext4_get_inode_loc:5054: inode #18: block 9: comm syz.0.0: unable to read itable block
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0) in ext4_reserve_inode_write:6519: IO failure
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs (loop0): I/O error while writing superblock
EXT4-fs error (device loop0): ext4_dirty_inode:6733: inode #18: comm syz.0.0: mark_inode_dirty error
Buffer I/O error on dev loop0, logical block 1, lost sync page write
EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 216 vs 220 free clusters
------------[ cut here ]------------
!folio_buffers(folio)
WARNING: fs/ext4/inode.c:3937 at ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3937, CPU#0: syz.0.0/5331
Modules linked in:
CPU: 0 UID: 0 PID: 5331 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:3937
Code: 4f 71 a4 ff 49 83 3f 00 74 1a e8 b4 d7 31 ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 9f c3 cc ff e8 9a d7 31 ff 90 <0f> 0b 90 eb e0 e8 8f d7 31 ff 90 0f 0b 90 eb a7 e8 84 d7 31 ff 48
RSP: 0000:ffffc9000f897528 EFLAGS: 00010283
RAX: ffffffff829641d6 RBX: ffffea0001513a00 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 000000000000e7df RDI: 000000000000e7e0
RBP: 1ffffd40002a2740 R08: ffffea0001513a07 R09: 1ffffd40002a2740
R10: dffffc0000000000 R11: fffff940002a2741 R12: ffff888044b79678
R13: 1ffffd40002a2741 R14: 0000000000000001 R15: ffffea0001513a28
FS:  00007fc993b956c0(0000) GS:ffff88808b0a5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000080 CR3: 000000001fbfa000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 bio_set_pages_dirty+0x36d/0xa70 block/bio.c:1659
 __blkdev_direct_IO+0x827/0xf70 block/fops.c:250
 blkdev_direct_IO+0x122b/0x17d0 block/fops.c:441
 blkdev_read_iter+0x223/0x420 block/fops.c:822
 aio_read+0x33a/0x4d0 fs/aio.c:1656
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x774/0x13d0 fs/aio.c:2111
 __do_sys_io_submit fs/aio.c:2170 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2140
 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: 0033:0x7fc992d9f559
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:00007fc993b94fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007fc993026090 RCX: 00007fc992d9f559
RDX: 0000200000003c40 RSI: 00000000000000ca RDI: 00007fc993b74000
RBP: 00007fc992e36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc993026128 R14: 00007fc993026090 R15: 00007ffec9e2f018
 </TASK>