------------[ cut here ]------------
WARNING: mm/page-writeback.c:2710 at __folio_mark_dirty+0x202/0xe10 mm/page-writeback.c:2710, CPU#0: syz.0.0/5339
Modules linked in:
CPU: 0 UID: 0 PID: 5339 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+0x202/0xe10 mm/page-writeback.c:2710
Code: 3c 20 00 74 08 48 89 df e8 fb ce 2a 00 4c 8b 33 4c 89 f6 48 83 e6 08 31 ff e8 2a 29 c3 ff 49 83 e6 08 75 20 e8 3f 24 c3 ff 90 <0f> 0b 90 eb 1a e8 34 24 c3 ff 48 8b 2c 24 e9 5d 07 00 00 e8 26 24
RSP: 0000:ffffc9000a567968 EFLAGS: 00010093
RAX: ffffffff81fde321 RBX: ffffea00008c5080 RCX: ffff88801fa224c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880121b8e58 R08: ffffea00008c5087 R09: 1ffffd4000118a10
R10: dffffc0000000000 R11: fffff94000118a11 R12: dffffc0000000000
R13: ffff8880121b8e60 R14: 0000000000000000 R15: 0000000000000001
FS:  0000555590859500(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000002c0 CR3: 00000000410ef000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 block_dirty_folio+0x17a/0x1d0 fs/buffer.c:754
 fault_dirty_shared_page+0x103/0x550 mm/memory.c:3558
 wp_page_shared mm/memory.c:3945 [inline]
 do_wp_page+0x26ec/0x5810 mm/memory.c:4148
 handle_pte_fault mm/memory.c:6289 [inline]
 __handle_mm_fault mm/memory.c:6411 [inline]
 handle_mm_fault+0x14c5/0x32b0 mm/memory.c:6580
 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+0x71/0xd0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f958f465619
Code: ff ff ff 01 64 48 8b 04 25 00 00 00 00 48 8d b8 c8 fe ff ff e8 f8 5f 0c 00 85 c0 75 10 48 8b 44 24 68 48 8b b4 24 98 00 00 00 <48> 89 30 64 f0 83 2c 25 90 ff ff ff 01 48 8b 84 24 80 00 00 00 48
RSP: 002b:00007ffdc84d9800 EFLAGS: 00010246
RAX: 00002000000002c0 RBX: 0000000000000002 RCX: ffffe00000000000
RDX: 2d1624217c061348 RSI: 0000000000000000 RDI: 00005555908593c8
RBP: 00007f958f7e7da0 R08: 00007f958f3ff02c R09: 000000000000000f
R10: 0000000000000001 R11: 0000000000000006 R12: 00007f958f7e5fac
R13: 00007ffdc84d98f0 R14: fffffffffffffffe R15: 00007ffdc84d9910
 </TASK>