7fc6024b5000-7fc6024b6fff: ffff8880790cb500
    7fc6024b7000-7ffc9cfacfff: 0000000000000000
    7ffc9cfad000-7ffc9cfcdfff: ffff8880790cb640
    7ffc9cfce000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6744 at mm/vma.c:759 vma_merge_existing_range+0x1390/0x16c0 mm/vma.c:759
Modules linked in:
CPU: 0 UID: 0 PID: 6744 Comm: syz.1.215 Not tainted 6.15.0-rc1-syzkaller-00025-gbec7dcbc242c #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 40 7e a7 ff 90 0f 0b 90 e9 f3 ee ff ff e8 32 7e a7 ff 48 8b 7c 24 08 48 c7 c6 00 54 56 8c e8 f1 94 f1 ff 90 <0f> 0b 90 e9 68 ef ff ff e8 13 7e a7 ff e9 cc f0 ff ff e8 09 7e a7
RSP: 0018:ffffc9001b607a60 EFLAGS: 00010286
RAX: ffffffff8c20bff5 RBX: 0000200000ced000 RCX: ffff88807e020000
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: ffffc9001b607b90 R08: ffffffff8c20bef0 R09: 1ffff920036c0eb4
R10: dffffc0000000000 R11: fffff520036c0eb5 R12: 0000200000eb0000
R13: ffffc9001b607c40 R14: ffffc9001b607c60 R15: 0000200000ced000
FS:  00007fc60248d6c0(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c352cb8 CR3: 0000000030c74000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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: 0033:0x7fc60158d169
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:00007fc60248d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007fc6017a6080 RCX: 00007fc60158d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc60248d090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007fc6017a6080 R15: 00007ffc9cfcb6d8
 </TASK>