------------[ cut here ]------------
WARNING: fs/ext4/inode.c:4000 at ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:4000, CPU#0: syz.4.1610/12529
Modules linked in:
CPU: 0 UID: 0 PID: 12529 Comm: syz.4.1610 Not tainted 6.17.0-rc1-next-20250814-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:4000
Code: 6f d0 ad ff 49 83 3f 00 74 1a e8 74 52 4a ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 af 8e d0 ff e8 5a 52 4a ff 90 <0f> 0b 90 eb e0 e8 4f 52 4a ff 90 0f 0b 90 eb a7 e8 44 52 4a ff 48
RSP: 0018:ffffc9000ae77930 EFLAGS: 00010287
RAX: ffffffff827553b6 RBX: ffffea000130e580 RCX: 0000000000080000
RDX: ffffc9000e32e000 RSI: 00000000000000dd RDI: 00000000000000de
RBP: 1ffffd4000261cb0 R08: ffffea000130e587 R09: 1ffffd4000261cb0
R10: dffffc0000000000 R11: fffff94000261cb1 R12: ffff88804d4304b8
R13: 1ffffd4000261cb1 R14: 0000000000000001 R15: ffffea000130e5a8
FS:  00007f8064fe66c0(0000) GS:ffff888125c0f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000a7b000 CR3: 000000005377a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 folio_mark_dirty_lock+0xa8/0xe0 mm/page-writeback.c:2871
 set_page_dirty_lock+0x5e/0x140 mm/folio-compat.c:51
 fuse_copy_finish+0x105/0x200 fs/fuse/dev.c:841
 fuse_dev_do_read+0xcc9/0x1240 fs/fuse/dev.c:1481
 fuse_dev_read+0x159/0x1f0 fs/fuse/dev.c:1546
 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/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f806418d5fc
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 93 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 ef 93 02 00 48
RSP: 002b:00007f8064fe5fb0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00002000000042c0 RCX: 00007f806418d5fc
RDX: 0000000000002000 RSI: 00002000000042c0 RDI: 0000000000000008
RBP: 00007f8064211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000008
R13: 0000200000000bc0 R14: 00007f80643b6180 R15: 00007fff4eda1e78
 </TASK>