7f96fa7c0000-7f96fa7c1fff: ffff8880784d6500
    7f96fa7c2000-7f96fa7c3fff: ffff8880784d63c0
    7f96fa7c4000-7ffd0deb3fff: 0000000000000000
    7ffd0deb4000-7ffd0ded4fff: ffff8880784d6280
    7ffd0ded5000-ffffffffffffffff: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6050 at mm/vma.c:821 vma_merge_existing_range mm/vma.c:821 [inline]
WARNING: CPU: 1 PID: 6050 at mm/vma.c:821 vma_modify+0x153d/0x1970 mm/vma.c:1617
Modules linked in:
CPU: 1 UID: 0 PID: 6050 Comm: syz.0.27 Not tainted 6.15.0-next-20250606-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 a1 5f ab ff 90 0f 0b 90 e9 a6 ec ff ff e8 93 5f ab ff 4c 89 f7 48 c7 c6 40 92 96 8b e8 54 06 f3 ff 90 <0f> 0b 90 e9 4f ed ff ff e8 76 5f ab ff e9 52 ee ff ff e8 6c 5f ab
RSP: 0018:ffffc90005377b38 EFLAGS: 00010286
RAX: ffffffff8b5f68cd RBX: ffff888033204500 RCX: ffff888025c85a00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: 0000200000000000 R08: ffffc900053776a7 R09: 1ffff92000a6eed4
R10: dffffc0000000000 R11: fffff52000a6eed5 R12: 0000200000000000
R13: ffffc90005377c60 R14: ffffc90005377c40 R15: 1ffff92000a6ef8c
FS:  00007f96fa79a6c0(0000) GS:ffff888125d4d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7bc7bffe00 CR3: 0000000024816000 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: 0033:0x7f96f998e929
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:00007f96fa79a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000098
RAX: ffffffffffffffda RBX: 00007f96f9bb6080 RCX: 00007f96f998e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f96fa79a090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 00007f96f9bb6080 R15: 00007ffd0ded4018
 </TASK>