7fc265b8c000-7fc265b8dfff: ffff888025abd640
    7fc265b8e000-7fc265b8ffff: ffff888025abddc0
    7fc265b90000-7fc2666edfff: ffff888025abdb40
    7fc2666ee000-7fffde636fff: 0000000000000000
    7fffde637000-7fffde657fff: ffff8880585fac80
    7fffde658000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 1 PID: 14630 at mm/vma.c:821 vma_merge_existing_range mm/vma.c:821 [inline]
WARNING: CPU: 1 PID: 14630 at mm/vma.c:821 vma_modify+0x153d/0x1970 mm/vma.c:1617
Modules linked in:
CPU: 1 UID: 0 PID: 14630 Comm: syz.0.2278 Not tainted 6.16.0-rc1-syzkaller #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 a0 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:ffffc9000216fb38 EFLAGS: 00010286
RAX: ffffffff8b5778cd RBX: ffff88807a636140 RCX: ffff88801c765a00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: 0000200000130000 R08: ffffc9000216f6a7 R09: 1ffff9200042ded4
R10: dffffc0000000000 R11: fffff5200042ded5 R12: 0000200000130000
R13: ffffc9000216fc60 R14: ffffc9000216fc40 R15: 1ffff9200042df8c
FS:  00007fc2637f66c0(0000) GS:ffff888125d86000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe230e56c0 CR3: 000000007fa18000 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: 0033:0x7fc26598e929
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:00007fc2637f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007fc265bb5fa0 RCX: 00007fc26598e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc2637f6090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007fc265bb5fa0 R15: 00007fffde656908
 </TASK>