------------[ cut here ]------------
!folio_buffers(folio)
WARNING: fs/ext4/inode.c:3913 at ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3913, CPU#0: kworker/0:0/9
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/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
Workqueue: events bio_dirty_fn
RIP: 0010:ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3913
Code: ff a8 a7 ff 49 83 3f 00 74 1a e8 34 e0 3b ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 3f ad cd ff e8 1a e0 3b ff 90 <0f> 0b 90 eb e0 e8 0f e0 3b ff 90 0f 0b 90 eb a7 e8 04 e0 3b ff 48
RSP: 0018:ffffc9000022fa28 EFLAGS: 00010293
RAX: ffffffff8289cd36 RBX: ffffea00007bd040 RCX: ffff88801cafc980
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffffd40000f7a08 R08: ffffea00007bd047 R09: 1ffffd40000f7a08
R10: dffffc0000000000 R11: fffff940000f7a09 R12: ffff888047ddf7d8
R13: 1ffffd40000f7a09 R14: 0000000000000001 R15: ffffea00007bd068
FS:  0000000000000000(0000) GS:ffff88808ca55000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000fca000 CR3: 0000000011871000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __bio_release_pages+0x103/0x1a0 block/bio.c:1188
 bio_release_pages include/linux/bio.h:495 [inline]
 bio_dirty_fn+0xac/0x100 block/bio.c:1690
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>