------------[ cut here ]------------
WARNING: mm/page-writeback.c:2666 at __folio_mark_dirty+0x202/0xe00, CPU#1: syz.4.1477/17237
Modules linked in:
CPU: 1 UID: 0 PID: 17237 Comm: syz.4.1477 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__folio_mark_dirty+0x202/0xe00
Code: 3c 20 00 74 08 48 89 df e8 5b 33 2b 00 4c 8b 33 4c 89 f6 48 83 e6 08 31 ff e8 aa 25 c4 ff 49 83 e6 08 75 20 e8 bf 20 c4 ff 90 <0f> 0b 90 eb 1a e8 b4 20 c4 ff 48 8b 2c 24 e9 56 07 00 00 e8 a6 20
RSP: 0018:ffffc90004ef73d0 EFLAGS: 00010083
RAX: ffffffff81fe6621 RBX: ffffea0006cf9180 RCX: 0000000000080000
RDX: ffffc900248f4000 RSI: 000000000000335c RDI: 000000000000335d
RBP: ffff8881179e6e98 R08: ffffea0006cf9187 R09: 1ffffd4000d9f230
R10: dffffc0000000000 R11: fffff94000d9f231 R12: dffffc0000000000
R13: ffff8881179e6ea0 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f1f23b886c0(0000) GS:ffff8882a9a08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 00000001a404a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 block_dirty_folio+0x17a/0x1d0
 fault_dirty_shared_page+0x103/0x550
 do_wp_page+0x270c/0x57c0
 handle_mm_fault+0x1520/0x32a0
 do_user_addr_fault+0x75b/0x1360
 exc_page_fault+0x6a/0xc0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:__put_user_4+0xd/0x20
Code: 66 89 01 31 c9 0f 1f 00 e9 c0 74 03 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 cb 48 c1 fb 3f 48 09 d9 0f 1f 00 <89> 01 31 c9 0f 1f 00 e9 97 74 03 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90004ef7a58 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000200000000000
RDX: 0000000000000000 RSI: ffffffff8dc1c57c RDI: ffffffff8be092e0
RBP: ffffc90004ef7c10 R08: ffffffff8210c55f R09: ffff8881bb657180
R10: dffffc0000000000 R11: ffffed1022f3cdab R12: 0000000000000000
R13: 1ffff920009def50 R14: 0000200000000000 R15: 0000000000000000
 file_ioctl+0x754/0x860
 do_vfs_ioctl+0xc26/0x1530
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f22d9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1f23b88028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1f23015fa0 RCX: 00007f1f22d9acb9
RDX: 0000200000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: 00007f1f22e08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1f23016038 R14: 00007f1f23015fa0 R15: 00007fff714e1428
 </TASK>
