------------[ cut here ]------------
!folio_buffers(folio)
WARNING: fs/ext4/inode.c:3938 at ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3938, CPU#0: syz.0.0/5330
Modules linked in:
CPU: 0 UID: 0 PID: 5330 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:3938
Code: 3f fa a7 ff 49 83 3f 00 74 1a e8 84 2e 3b ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 0f 9f cd ff e8 6a 2e 3b ff 90 <0f> 0b 90 eb e0 e8 5f 2e 3b ff 90 0f 0b 90 eb a7 e8 54 2e 3b ff 48
RSP: 0018:ffffc9000ed87600 EFLAGS: 00010293
RAX: ffffffff828aa2d6 RBX: ffffea00004678c0 RCX: ffff8880312ca500
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffffd400008cf18 R08: ffffea00004678c7 R09: 1ffffd400008cf18
R10: dffffc0000000000 R11: fffff9400008cf19 R12: ffff8880475c1710
R13: 1ffffd400008cf19 R14: 0000000000000001 R15: ffffea00004678e8
FS:  00007f911607c6c0(0000) GS:ffff88808c881000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91154170a0 CR3: 000000001f424000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 bio_set_pages_dirty+0x38e/0xaa0 block/bio.c:1655
 __blkdev_direct_IO+0x859/0xfa0 block/fops.c:248
 blkdev_direct_IO+0x121a/0x1790 block/fops.c:436
 blkdev_read_iter+0x23d/0x440 block/fops.c:839
 do_iter_readv_writev+0x619/0x8c0 fs/read_write.c:-1
 vfs_readv+0x288/0x840 fs/read_write.c:1020
 do_preadv fs/read_write.c:1134 [inline]
 __do_sys_preadv2 fs/read_write.c:1193 [inline]
 __se_sys_preadv2+0x184/0x2a0 fs/read_write.c:1184
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f911519ce59
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:00007f911607bfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007f9115416180 RCX: 00007f911519ce59
RDX: 0000000000000002 RSI: 0000200000000080 RDI: 000000000000000d
RBP: 00007f9115232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9115416218 R14: 00007f9115416180 R15: 00007ffee6ffd658
 </TASK>