7fc13bab7000-7fc13bad6fff: ffff888064b543c0
    7fc13bad7000-7fc13badafff: ffff88802f23a500
    7fc13badb000-7fc13badcfff: ffff888026e75c80
    7fc13badd000-7fc13badefff: ffff888026e75000
    7fc13badf000-7ffda74b8fff: 0000000000000000
    7ffda74b9000-7ffda74d9fff: ffff888026e75500
    7ffda74da000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6965 at mm/vma.c:768 vma_merge_existing_range+0x1257/0x15b0 mm/vma.c:768
Modules linked in:
CPU: 1 UID: 0 PID: 6965 Comm: syz.2.215 Not tainted 6.15.0-syzkaller-08297-ge0797d3b91de #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:vma_merge_existing_range+0x1257/0x15b0 mm/vma.c:768
Code: 0b 90 e9 52 f0 ff ff e8 87 12 ad ff 90 0f 0b 90 e9 87 ef ff ff e8 79 12 ad ff 48 89 df 48 c7 c6 40 74 96 8b e8 fa a7 f2 ff 90 <0f> 0b 90 e9 ff ef ff ff e8 5c 12 ad ff e9 04 f1 ff ff e8 52 12 ad
RSP: 0018:ffffc90003a0faf8 EFLAGS: 00010286
RAX: ffffffff8b5567cd RBX: ffffc90003a0fc40 RCX: ffff8880248b9e00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: 0000200000800000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa66c R12: ffff88807ab51280
R13: 1ffff92000741f8c R14: 0000200000000000 R15: 0000200000000000
FS:  00007fc13ba946c0(0000) GS:ffff888125d98000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0fdfda6b60 CR3: 0000000061d7a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vma_modify+0x76/0x460 mm/vma.c:1564
 vma_modify_flags+0x1e8/0x230 mm/vma.c:1605
 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: 0033:0x7fc13ab8e969
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:00007fc13ba94038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007fc13adb6160 RCX: 00007fc13ab8e969
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc13ba94090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 00007fc13adb6160 R15: 00007ffda74d8158
 </TASK>