7fff8249e000-7fff824befff: ffff8880334a6280
    7fff824bf000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9748 at mm/vma.c:821 vma_merge_existing_range mm/vma.c:821 [inline]
WARNING: CPU: 1 PID: 9748 at mm/vma.c:821 vma_modify+0x153d/0x1970 mm/vma.c:1617
Modules linked in:
CPU: 1 UID: 0 PID: 9748 Comm: syz.0.980 Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:vma_merge_existing_range mm/vma.c:821 [inline]
RIP: 0010:vma_modify+0x153d/0x1970 mm/vma.c:1617
Code: 0b 90 e9 9d ed ff ff e8 d1 8a ad ff 90 0f 0b 90 e9 a6 ec ff ff e8 c3 8a ad ff 4c 89 f7 48 c7 c6 e0 7f 96 8b e8 f4 26 f3 ff 90 <0f> 0b 90 e9 4f ed ff ff e8 a6 8a ad ff e9 52 ee ff ff e8 9c 8a ad
RSP: 0018:ffffc9000b05fb38 EFLAGS: 00010286
RAX: ffffffff8b57a8cd RBX: ffff8880793dc8c0 RCX: ffff88802b321e00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: 0000200000ffc000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa9ec R12: 0000200000ffc000
R13: ffffc9000b05fc60 R14: ffffc9000b05fc40 R15: 1ffff9200160bf8c
FS:  00007f8cde6bd6c0(0000) GS:ffff888125d86000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f391d84db82 CR3: 000000006ea62000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vma_modify_flags+0x1e8/0x230 mm/vma.c:1658
 mlock_fixup+0x22a/0x360 mm/mlock.c:483
 apply_mlockall_flags+0x2f0/0x3c0 mm/mlock.c:736
 __ia32_sys_munlockall+0x10a/0x220 mm/mlock.c:782
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8cdd78e929
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:00007f8cde6bd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007f8cdd9b6080 RCX: 00007f8cdd78e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8cde6bd090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f8cdd9b6080 R15: 00007fff824bcdb8
 </TASK>