------------[ cut here ]------------
WARNING: CPU: 1 PID: 4366 at fs/ext4/inode.c:3661 ext4_dirty_folio+0x155/0x320 fs/ext4/inode.c:3661
Modules linked in:
CPU: 1 PID: 4366 Comm: syz.2.3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:ext4_dirty_folio+0x155/0x320 fs/ext4/inode.c:3661
Code: 49 83 3f 00 74 1f e8 fa e1 5a ff 48 8b 3c 24 48 89 de 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 80 9a c9 ff e8 db e1 5a ff <0f> 0b eb dd e8 d2 e1 5a ff 0f 0b eb af e8 c9 e1 5a ff 48 89 df 48
RSP: 0018:ffffc900046c7ae0 EFLAGS: 00010287
RAX: ffffffff82273fc5 RBX: ffffea000149ebc0 RCX: 0000000000080000
RDX: ffffc9000cbb1000 RSI: 000000000000164d RDI: 000000000000164e
RBP: 1ffffd4000293d78 R08: ffffea000149ebc7 R09: 1ffffd4000293d78
R10: dffffc0000000000 R11: fffff94000293d79 R12: dffffc0000000000
R13: 1ffffd4000293d79 R14: 0000000000000001 R15: ffffea000149ebe8
FS:  00007f77993286c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b5ce262024 CR3: 000000007d83d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unpin_user_pages_dirty_lock+0x2f3/0x550 mm/gup.c:360
 process_vm_rw_single_vec mm/process_vm_access.c:126 [inline]
 process_vm_rw_core mm/process_vm_access.c:215 [inline]
 process_vm_rw+0x946/0xbe0 mm/process_vm_access.c:283
 __do_sys_process_vm_writev mm/process_vm_access.c:303 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:298 [inline]
 __x64_sys_process_vm_writev+0xdc/0xf0 mm/process_vm_access.c:298
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f779839de99
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:00007f7799328028 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 00007f7798625fa0 RCX: 00007f779839de99
RDX: 00000000000001d0 RSI: 0000200000c22000 RDI: 0000000000000004
RBP: 00007f7798433eaf R08: 0000000000000001 R09: 0000000000000000
R10: 0000200000c22fa0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7798626038 R14: 00007f7798625fa0 R15: 00007ffd57e4bbc8
 </TASK>