7f4b55d5a000-7fffa2bfdfff: 0000000000000000
    7fffa2bfe000-7fffa2c1efff: ffff88807ab2b4d8
    7fffa2c1f000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10918 at mm/vma.c:734 vma_merge_existing_range+0x11c8/0x1770 mm/vma.c:734
Modules linked in:
CPU: 0 UID: 0 PID: 10918 Comm: syz.7.1208 Not tainted 6.14.0-rc6-syzkaller-00253-gcb82ca153949 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:vma_merge_existing_range+0x11c8/0x1770 mm/vma.c:734
Code: 48 c7 c6 00 24 36 8c e8 06 5e f2 ff 90 0f 0b 90 e9 fd f0 ff ff e8 88 b1 a7 ff 4c 89 f7 48 c7 c6 80 24 36 8c e8 e9 5d f2 ff 90 <0f> 0b 90 e9 61 f1 ff ff e8 6b b1 a7 ff e9 7b f2 ff ff e8 61 b1 a7
RSP: 0018:ffffc900038b7a40 EFLAGS: 00010282
RAX: ffffffff8c010505 RBX: 00004000009fd000 RCX: ffff88802d6b5a00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: ffffc900038b7b90 R08: ffffffff8c010400 R09: 1ffff92000716eb0
R10: dffffc0000000000 R11: fffff52000716eb1 R12: 0000400000eb0000
R13: 00004000009fd000 R14: ffffc900038b7c40 R15: ffff888029daa5d0
FS:  00007f4b55d536c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000121000 CR3: 0000000058bb8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vma_modify+0x76/0x390 mm/vma.c:1517
 vma_modify_flags+0x3a5/0x430 mm/vma.c:1551
 mlock_fixup+0x21d/0x350 mm/mlock.c:481
 apply_mlockall_flags+0x307/0x410 mm/mlock.c:734
 __do_sys_munlockall+0x10a/0x220 mm/mlock.c:780
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b54f8d169
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:00007f4b55d53038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007f4b551a5fa0 RCX: 00007f4b54f8d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f4b55d53090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f4b551a5fa0 R15: 00007f4b552cfa28
 </TASK>