------------[ cut here ]------------
warn && !folio_test_uptodate(folio)
WARNING: mm/page-writeback.c:2710 at __folio_mark_dirty+0x202/0xe00 mm/page-writeback.c:2710, CPU#0: syz.0.0/5321
Modules linked in:
CPU: 0 UID: 0 PID: 5321 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+0x202/0xe00 mm/page-writeback.c:2710
Code: 3c 20 00 74 08 48 89 df e8 7b 29 2b 00 4c 8b 33 4c 89 f6 48 83 e6 08 31 ff e8 4a 9a c2 ff 49 83 e6 08 75 20 e8 5f 95 c2 ff 90 <0f> 0b 90 eb 1a e8 54 95 c2 ff 48 8b 2c 24 e9 56 07 00 00 e8 46 95
RSP: 0000:ffffc9000e3ff970 EFLAGS: 00010093
RAX: ffffffff82001351 RBX: ffffea00004b3c80 RCX: ffff8880352924c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880122917f8 R08: ffffea00004b3c87 R09: 1ffffd4000096790
R10: dffffc0000000000 R11: fffff94000096791 R12: dffffc0000000000
R13: ffff888012291800 R14: 0000000000000000 R15: 0000000000000001
FS:  00005555826d5500(0000) GS:ffff88808cf1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000001a0 CR3: 0000000012a14000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 block_dirty_folio+0x17a/0x1d0 fs/buffer.c:754
 fault_dirty_shared_page+0x103/0x550 mm/memory.c:3561
 wp_page_shared mm/memory.c:3948 [inline]
 do_wp_page+0x270c/0x57b0 mm/memory.c:4151
 handle_pte_fault mm/memory.c:6292 [inline]
 __handle_mm_fault mm/memory.c:6414 [inline]
 handle_mm_fault+0x1520/0x32a0 mm/memory.c:6583
 do_user_addr_fault+0xa73/0x1360 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: 0033:0x7f167ab6b4df
Code: fe 48 8d 54 11 80 0f 1f 44 00 00 62 e1 fe 28 6f 0e 62 e1 fe 28 6f 56 01 62 e1 fe 28 6f 5e 02 62 e1 fe 28 6f 66 03 48 83 ee 80 <62> e1 fd 28 7f 0f 62 e1 fd 28 7f 57 01 62 e1 fd 28 7f 5f 02 62 e1
RSP: 002b:00007ffe228e72b8 EFLAGS: 00010207
RAX: 0000200000000180 RBX: 0000000000000004 RCX: 0000200000000180
RDX: 00002000000003d4 RSI: 00007f167a5ffa7b RDI: 00002000000001a0
RBP: fffffffffffffffe R08: 0000000000000000 R09: 000000000000000b
R10: 00000000000002d4 R11: 0000000000000001 R12: 00007ffe228e73e0
R13: 00007f167ae15fac R14: 0000000000014f8d R15: 00007ffe228e73c0
 </TASK>