7f3c2bafe000-7f3c2bafffff: ffff88802fdd1640
    7f3c2bb00000-7ffe77b66fff: 0000000000000000
    7ffe77b67000-7ffe77b87fff: ffff88802fdd1a00
    7ffe77b88000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7552 at mm/vma.c:768 vma_merge_existing_range+0x13c6/0x1750 mm/vma.c:768
Modules linked in:
CPU: 1 UID: 0 PID: 7552 Comm: syz.0.446 Not tainted 6.15.0-rc3-syzkaller-00001-g9d7a0577c9db #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:vma_merge_existing_range+0x13c6/0x1750 mm/vma.c:768
Code: 90 e9 e0 ef ff ff e8 79 6c a7 ff 90 0f 0b 90 e9 c8 ee ff ff e8 6b 6c a7 ff 48 8b 3c 24 48 c7 c6 60 52 56 8c e8 5b 94 f1 ff 90 <0f> 0b 90 e9 4d ef ff ff e8 4d 6c a7 ff e9 a8 f0 ff ff e8 43 6c a7
RSP: 0018:ffffc9001b1d7a60 EFLAGS: 00010286
RAX: ffffffff8c1fdff5 RBX: 000020000046d000 RCX: ffff88802504da00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: ffffc9001b1d7b90 R08: ffffffff8c1fdef0 R09: 1ffff9200363aeb4
R10: dffffc0000000000 R11: fffff5200363aeb5 R12: 000020000046d000
R13: ffffffff93651020 R14: 1ffff9200363af8c R15: 0000200000800000
FS:  00007f3c28bf66c0(0000) GS:ffff8881250cf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f782cd8f440 CR3: 0000000022f44000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vma_modify+0x76/0x450 mm/vma.c:1564
 vma_modify_flags+0x3b2/0x430 mm/vma.c:1605
 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+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3c2ad8e169
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:00007f3c28bf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007f3c2afb5fa0 RCX: 00007f3c2ad8e169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f3c28bf6090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f3c2afb5fa0 R15: 00007ffe77b86438
 </TASK>