------------[ cut here ]------------
WARNING: CPU: 0 PID: 5350 at fs/ext4/inode.c:3931 ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3931
Modules linked in:
CPU: 0 UID: 0 PID: 5350 Comm: syz.0.0 Not tainted 6.16.0-rc4-syzkaller-00308-ga79a588fc176 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3931
Code: 3f 90 ae ff 49 83 3f 00 74 1a e8 64 0d 4b ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 bf dd d0 ff e8 4a 0d 4b ff 90 <0f> 0b 90 eb e0 e8 3f 0d 4b ff 90 0f 0b 90 eb a7 e8 34 0d 4b ff 48
RSP: 0018:ffffc9000d4c7aa0 EFLAGS: 00010283
RAX: ffffffff82755146 RBX: ffffea0001342080 RCX: 0000000000100000
RDX: ffffc9000ea43000 RSI: 000000000002e0de RDI: 000000000002e0df
RBP: 1ffffd4000268410 R08: ffffea0001342087 R09: 1ffffd4000268410
R10: dffffc0000000000 R11: fffff94000268411 R12: ffff888043ea97d8
R13: 1ffffd4000268411 R14: 0000000000000001 R15: ffffea00013420a8
FS:  00007fbcc98c26c0(0000) GS:ffff88808d21c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000034afa4 CR3: 00000000437d3000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 unpin_user_pages_dirty_lock+0x37d/0x510 mm/gup.c:326
 process_vm_rw_single_vec mm/process_vm_access.c:127 [inline]
 process_vm_rw_core mm/process_vm_access.c:216 [inline]
 process_vm_rw+0x85a/0xb40 mm/process_vm_access.c:284
 __do_sys_process_vm_writev mm/process_vm_access.c:304 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:299 [inline]
 __x64_sys_process_vm_writev+0xe0/0x100 mm/process_vm_access.c:299
 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: 0033:0x7fbcc898e929
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:00007fbcc98c2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 00007fbcc8bb6080 RCX: 00007fbcc898e929
RDX: 0000000000000001 RSI: 0000200000c22000 RDI: 0000000000000004
RBP: 00007fbcc8a10b39 R08: 0000000000000001 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbcc8bb6080 R15: 00007fffdc2d9738
 </TASK>