------------[ cut here ]------------
WARNING: CPU: 0 PID: 5318 at mm/page-writeback.c:2716 __folio_mark_dirty+0x202/0xe30 mm/page-writeback.c:2716
Modules linked in:
CPU: 0 UID: 0 PID: 5318 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~bpo12+1 04/01/2014
RIP: 0010:__folio_mark_dirty+0x202/0xe30 mm/page-writeback.c:2716
Code: 3c 20 00 74 08 48 89 df e8 ab c8 2a 00 4c 8b 33 4c 89 f6 48 83 e6 08 31 ff e8 fa 81 c3 ff 49 83 e6 08 75 20 e8 0f 7d c3 ff 90 <0f> 0b 90 eb 1a e8 04 7d c3 ff 48 8b 2c 24 e9 74 07 00 00 e8 f6 7c
RSP: 0000:ffffc9000d39f7d0 EFLAGS: 00010093
RAX: ffffffff81fc9651 RBX: ffffea000036e700 RCX: ffff888000dda480
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888012033e18 R08: ffffea000036e707 R09: 1ffffd400006dce0
R10: dffffc0000000000 R11: fffff9400006dce1 R12: dffffc0000000000
R13: ffff888012033e20 R14: 0000000000000000 R15: 0000000000000001
FS:  0000555590ebe500(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 0000000011f25000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 block_dirty_folio+0x17a/0x1d0 fs/buffer.c:754
 ext4_block_page_mkwrite fs/ext4/inode.c:6649 [inline]
 ext4_page_mkwrite+0xf07/0x1190 fs/ext4/inode.c:6746
 do_page_mkwrite+0x14d/0x310 mm/memory.c:3489
 wp_page_shared mm/memory.c:3890 [inline]
 do_wp_page+0x268d/0x5800 mm/memory.c:4109
 handle_pte_fault mm/memory.c:6211 [inline]
 __handle_mm_fault+0x1033/0x5400 mm/memory.c:6336
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6505
 do_user_addr_fault+0xa7c/0x1380 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f7e110556b1
Code: 48 8b 54 24 08 48 85 d2 74 17 8b 44 24 18 0f c8 89 c0 48 89 44 24 18 48 83 fa 01 0f 85 b3 01 00 00 48 8b 44 24 10 8b 54 24 18 <89> 10 e9 15 fd ff ff 48 8b 44 24 10 8b 10 48 8b 44 24 08 48 85 c0
RSP: 002b:00007ffe57a08910 EFLAGS: 00010246
RAX: 00002000000000c0 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000555590ebe3c8
RBP: 00007ffe57a08a18 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00007f7e113e609c
R13: 00007ffe57a08a40 R14: fffffffffffffffe R15: 00007ffe57a08a60
 </TASK>