------------[ cut here ]------------
warn && !folio_test_uptodate(folio)
WARNING: mm/page-writeback.c:2687 at __folio_mark_dirty+0x202/0xe40 mm/page-writeback.c:2687, CPU#0: syz.0.0/5324
Modules linked in:
CPU: 0 UID: 0 PID: 5324 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:__folio_mark_dirty+0x202/0xe40 mm/page-writeback.c:2687
Code: 3c 20 00 74 08 48 89 df e8 8b 49 2c 00 4c 8b 33 4c 89 f6 48 83 e6 08 31 ff e8 0a 6e c0 ff 49 83 e6 08 75 20 e8 1f 69 c0 ff 90 <0f> 0b 90 eb 1a e8 14 69 c0 ff 48 8b 2c 24 e9 56 07 00 00 e8 06 69
RSP: 0000:ffffc9000dda7970 EFLAGS: 00010093
RAX: ffffffff82056671 RBX: ffffea000046a440 RCX: ffff8880363b8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888038665178 R08: ffffea000046a447 R09: 1ffffd400008d488
R10: dffffc0000000000 R11: fffff9400008d489 R12: dffffc0000000000
R13: ffff888038665180 R14: 0000000000000000 R15: 0000000000000001
FS:  00005555565ab540(0000) GS:ffff88808ca49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000140 CR3: 000000001fdc1000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 block_dirty_folio+0x17a/0x1d0 fs/buffer.c:751
 fault_dirty_shared_page+0x103/0x540 mm/memory.c:3619
 wp_page_shared mm/memory.c:4006 [inline]
 do_wp_page+0x1abe/0x5a00 mm/memory.c:4209
 handle_pte_fault mm/memory.c:6333 [inline]
 __handle_mm_fault mm/memory.c:6455 [inline]
 handle_mm_fault+0x1520/0x3310 mm/memory.c:6624
 do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fb25216ce23
Code: 17 c3 0f 1f 44 00 00 83 fa 10 73 21 83 fa 08 73 36 48 83 ea 04 73 e0 83 fa fd 7c 10 8a 0e 74 0a 0f b7 74 16 02 66 89 74 17 02 <88> 0f c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 fa 7f 4c 17
RSP: 002b:00007ffe808cf0c8 EFLAGS: 00010246
RAX: 0000200000000140 RBX: 0000000000000004 RCX: 0000000000000032
RDX: fffffffffffffffd RSI: 00007fb251bffdb7 RDI: 0000200000000140
RBP: fffffffffffffffe R08: 00007fb251fff03c R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffe808cf1f0
R13: 00007fb252415fac R14: 0000000000014750 R15: 00007fb252415fa0
 </TASK>