------------[ cut here ]------------
WARNING: CPU: 0 PID: 6901 at fs/ext4/inode.c:3598 ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3598
Modules linked in:
CPU: 0 UID: 0 PID: 6901 Comm: syz.7.98 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3598
Code: 7f 17 af ff 49 83 3f 00 74 1a e8 b4 42 4f ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8f 0a d1 ff e8 9a 42 4f ff 90 <0f> 0b 90 eb e0 e8 8f 42 4f ff 90 0f 0b 90 eb a7 e8 84 42 4f ff 48
RSP: 0018:ffffc90003b97950 EFLAGS: 00010283
RAX: ffffffff8270ae46 RBX: ffffea000140da00 RCX: 0000000000080000
RDX: ffffc9001c002000 RSI: 00000000000000d5 RDI: 00000000000000d6
RBP: 1ffffd4000281b40 R08: ffffea000140da07 R09: 1ffffd4000281b40
R10: dffffc0000000000 R11: fffff94000281b41 R12: ffff88805b55b698
R13: 1ffffd4000281b41 R14: 0000000000000001 R15: ffffea000140da28
FS:  00007ffa54de96c0(0000) GS:ffff8881260f6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa54de8f98 CR3: 000000006332e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 folio_mark_dirty_lock+0xa8/0xe0 mm/page-writeback.c:2896
 set_page_dirty_lock+0x5e/0x140 mm/folio-compat.c:51
 fuse_copy_finish+0x104/0x200 fs/fuse/dev.c:839
 fuse_dev_do_read+0xcd1/0x1240 fs/fuse/dev.c:1478
 fuse_dev_read+0x153/0x1e0 fs/fuse/dev.c:1543
 new_sync_read fs/read_write.c:489 [inline]
 vfs_read+0x4d0/0x980 fs/read_write.c:570
 ksys_read+0x145/0x250 fs/read_write.c:713
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffa53f8e969
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:00007ffa54de9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007ffa541b6080 RCX: 00007ffa53f8e969
RDX: 0000000000002020 RSI: 0000200000000600 RDI: 0000000000000003
RBP: 00007ffa54010ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ffa541b6080 R15: 00007ffd53e7a078
 </TASK>