------------[ cut here ]------------ WARNING: CPU: 1 PID: 3957 at fs/ext4/inode.c:3659 ext4_dirty_folio+0x155/0x310 fs/ext4/inode.c:3659 Modules linked in: CPU: 1 PID: 3957 Comm: syz-executor.0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ext4_dirty_folio+0x155/0x310 fs/ext4/inode.c:3659 Code: 49 83 3f 00 74 1f e8 ea 73 5b ff 48 8b 3c 24 48 89 de 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 e0 1d ca ff e8 cb 73 5b ff <0f> 0b eb dd e8 c2 73 5b ff 0f 0b eb af e8 b9 73 5b ff 48 89 df 48 RSP: 0018:ffffc900049f7ae0 EFLAGS: 00010293 RAX: ffffffff82253b25 RBX: ffffea0001b785c0 RCX: ffff8880285c9dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffffd400036f0b8 R08: dffffc0000000000 R09: fffff9400036f0b9 R10: fffff9400036f0b9 R11: 1ffffd400036f0b8 R12: dffffc0000000000 R13: 1ffffd400036f0b9 R14: 0000000000000001 R15: ffffea0001b785e8 FS: 00007fb85e5ca6c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002034afa4 CR3: 000000007b245000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0x870/0xb00 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:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb85d87dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb85e5ca0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000137 RAX: ffffffffffffffda RBX: 00007fb85d9ac050 RCX: 00007fb85d87dda9 RDX: 0000000000000070 RSI: 0000000020c22000 RDI: 0000000000000005 RBP: 00007fb85d8ca47a R08: 0000000000000001 R09: 0000000000000000 R10: 0000000020c22fa0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fb85d9ac050 R15: 00007ffe05dc8058