------------[ cut here ]------------
warn && !folio_test_uptodate(folio)
WARNING: mm/page-writeback.c:2666 at __folio_mark_dirty+0x1fb/0xe30 mm/page-writeback.c:2666, CPU#0: syz.0.182/7214
Modules linked in:
CPU: 0 UID: 0 PID: 7214 Comm: syz.0.182 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__folio_mark_dirty+0x1fb/0xe30 mm/page-writeback.c:2666
Code: 3c 38 00 74 08 48 89 df e8 12 1b 28 00 4c 8b 33 4c 89 f6 48 83 e6 08 31 ff e8 41 fe c1 ff 49 83 e6 08 75 1c e8 d6 f8 c1 ff 90 <0f> 0b 90 eb 16 e8 cb f8 c1 ff e9 60 07 00 00 e8 c1 f8 c1 ff eb 05
RSP: 0000:ffffc9000dc6fa18 EFLAGS: 00010293
RAX: ffffffff8202879a RBX: ffffea000190a640 RCX: ffff8880332d0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff940003214c9 R12: ffff88804fadb510
R13: ffff88804fadb508 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000555565b0e500(0000) GS:ffff888126336000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000600 CR3: 0000000035e86000 CR4: 00000000003526f0
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+0x20b5/0x49d0 mm/memory.c:4209
 handle_pte_fault mm/memory.c:6333 [inline]
 __handle_mm_fault mm/memory.c:6455 [inline]
 handle_mm_fault+0x9f5/0x13c0 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: 0033:0x7fe13968b756
Code: 81 fa 80 00 00 00 76 ad c5 fe 6f 56 40 c5 fe 6f 5e 60 c5 fe 6f 64 16 e0 c5 fe 6f 6c 16 c0 c5 fe 6f 74 16 a0 c5 fe 6f 7c 16 80 <c5> fe 7f 07 c5 fe 7f 4f 20 c5 fe 7f 57 40 c5 fe 7f 5f 60 c5 fe 7f
RSP: 002b:00007ffef83a8488 EFLAGS: 00010202
RAX: 0000200000000600 RBX: 0000000000000004 RCX: 000000000000003f
RDX: 00000000000000fa RSI: 0000001b2db3661c RDI: 0000200000000600
RBP: fffffffffffffffe R08: 0000001b2df20000 R09: 0000000000000001
R10: 7fffffffffffff05 R11: 0000000000000009 R12: 00007ffef83a85b0
R13: 00007fe139935fac R14: 000000000002e373 R15: 00007fe139935fa0
 </TASK>