------------[ cut here ]------------
WARNING: fs/ext4/inode.c:3969 at ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3969, CPU#0: syz.6.3914/22034
Modules linked in:
CPU: 0 UID: 0 PID: 22034 Comm: syz.6.3914 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3969
Code: af 9d ab ff 49 83 3f 00 74 1a e8 a4 01 45 ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 cf d5 cf ff e8 8a 01 45 ff 90 <0f> 0b 90 eb e0 e8 7f 01 45 ff 90 0f 0b 90 eb a7 e8 74 01 45 ff 48
RSP: 0018:ffffc90004b9f930 EFLAGS: 00010287
RAX: ffffffff827cd7e6 RBX: ffffea00025a8680 RCX: 0000000000080000
RDX: ffffc90014134000 RSI: 00000000000000b6 RDI: 00000000000000b7
RBP: 1ffffd40004b50d0 R08: ffffea00025a8687 R09: 1ffffd40004b50d0
R10: dffffc0000000000 R11: fffff940004b50d1 R12: ffff888041dcbe78
R13: 1ffffd40004b50d1 R14: 0000000000000001 R15: ffffea00025a86a8
FS:  00007fef845cd6c0(0000) GS:ffff888125eba000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c38426a CR3: 000000007b57c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 folio_mark_dirty_lock+0xa8/0xe0 mm/page-writeback.c:2841
 set_page_dirty_lock+0x5e/0x140 mm/folio-compat.c:51
 fuse_copy_finish+0x109/0x200 fs/fuse/dev.c:860
 fuse_dev_do_read+0xccc/0x1240 fs/fuse/dev.c:1500
 fuse_dev_read+0x14c/0x1d0 fs/fuse/dev.c:1585
 new_sync_read fs/read_write.c:491 [inline]
 vfs_read+0x55a/0xa30 fs/read_write.c:572
 ksys_read+0x145/0x250 fs/read_write.c:715
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fef8378f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fef845cd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fef839e6180 RCX: 00007fef8378f749
RDX: 0000000000002020 RSI: 0000200000000c00 RDI: 0000000000000007
RBP: 00007fef83813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef839e6218 R14: 00007fef839e6180 R15: 00007ffde78876d8
 </TASK>