loop0: detected capacity change from 0 to 1024
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
EXT4-fs (loop0): mounted filesystem 00000000-0000-0006-0000-000000000000 r/w without journal. Quota mode: none.
ext4 filesystem being mounted at /0/file1 supports timestamps until 2038-01-19 (0x7fffffff)
EXT4-fs error (device loop0): ext4_map_blocks:832: inode #15: block 3: comm syz.0.0: lblock 3 mapped to illegal pblock 3 (length 3)
EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 3 with max blocks 3 with error 117
EXT4-fs (loop0): This should not happen!! Data will be lost

EXT4-fs error (device loop0): ext4_map_blocks:832: inode #15: block 8: comm syz.0.0: lblock 8 mapped to illegal pblock 8 (length 5)
EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 8 with max blocks 5 with error 117
EXT4-fs (loop0): This should not happen!! Data will be lost

------------[ 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.0.0/5316
Modules linked in:
CPU: 0 UID: 0 PID: 5316 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: 1f 34 a5 ff 49 83 3f 00 74 1a e8 d4 94 33 ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ff 33 cd ff e8 ba 94 33 ff 90 <0f> 0b 90 eb e0 e8 af 94 33 ff 90 0f 0b 90 eb a7 e8 a4 94 33 ff 48
RSP: 0018:ffffc9000e1af528 EFLAGS: 00010246
RAX: ffffffff829449a6 RBX: ffffea000141ce40 RCX: 0000000000100000
RDX: ffffc9000ea72000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: 1ffffd40002839c8 R08: ffffea000141ce47 R09: 1ffffd40002839c8
R10: dffffc0000000000 R11: fffff940002839c9 R12: ffff88801d0f1678
R13: 1ffffd40002839c9 R14: 0000000000000001 R15: ffffea000141ce68
FS:  00007f39a94da6c0(0000) GS:ffff88808c2c6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f39a94b8ff8 CR3: 000000003fbe9000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 bio_set_pages_dirty+0x372/0xa70 block/bio.c:1734
 __blkdev_direct_IO+0x821/0xf60 block/fops.c:249
 blkdev_direct_IO+0x121d/0x17b0 block/fops.c:435
 blkdev_read_iter+0x223/0x420 block/fops.c:816
 aio_read+0x33a/0x4d0 fs/aio.c:1656
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x774/0x13d0 fs/aio.c:2106
 __do_sys_io_submit fs/aio.c:2165 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2135
 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: 0033:0x7f39a859e159
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:00007f39a94d9fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f39a8825fa0 RCX: 00007f39a859e159
RDX: 00002000000000c0 RSI: 00000000000000ca RDI: 00007f39a9498000
RBP: 00007f39a863503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f39a8826038 R14: 00007f39a8825fa0 R15: 00007ffcf7da9018
 </TASK>