7f5a661b8000-7ffc1bfa1fff: 0000000000000000
    7ffc1bfa2000-7ffc1bfc2fff: ffff88802a1c5140
    7ffc1bfc3000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6870 at mm/vma.c:759 vma_merge_existing_range+0x1390/0x16c0 mm/vma.c:759
Modules linked in:
CPU: 0 UID: 0 PID: 6870 Comm: syz.4.203 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:vma_merge_existing_range+0x1390/0x16c0 mm/vma.c:759
Code: e9 ff ef ff ff e8 30 ed a4 ff 90 0f 0b 90 e9 f3 ee ff ff e8 22 ed a4 ff 48 8b 7c 24 08 48 c7 c6 60 66 56 8c e8 a1 4d f1 ff 90 <0f> 0b 90 e9 68 ef ff ff e8 03 ed a4 ff e9 cc f0 ff ff e8 f9 ec a4
RSP: 0018:ffffc90002ec7a60 EFLAGS: 00010286
RAX: ffffffff8c28aff5 RBX: 0000200000130000 RCX: ffff888028095a00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: ffffc90002ec7b90 R08: ffffffff8c28aef0 R09: 1ffff920005d8eb4
R10: dffffc0000000000 R11: fffff520005d8eb5 R12: 00002000002ab000
R13: ffffc90002ec7c40 R14: ffffc90002ec7c60 R15: 0000200000130000
FS:  00007f5a661af6c0(0000) GS:ffff888124f96000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f76a561f108 CR3: 00000000287d4000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 vma_modify+0x76/0x390 mm/vma.c:1531
 vma_modify_flags+0x3b2/0x430 mm/vma.c:1565
 mlock_fixup+0x21a/0x350 mm/mlock.c:483
 apply_mlockall_flags+0x309/0x410 mm/mlock.c:736
 __do_sys_munlockall+0x10a/0x220 mm/mlock.c:782
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5a6538d169
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:00007f5a661af038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007f5a655a5fa0 RCX: 00007f5a6538d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f5a661af090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f5a655a5fa0 R15: 00007ffc1bfc2518
 </TASK>