------------[ cut here ]------------
WARNING: mm/hugetlb.c:368 at hugetlb_vma_assert_locked+0x1dd/0x250 mm/hugetlb.c:368, CPU#1: syz.1.153/6714
Modules linked in:
CPU: 1 UID: 0 PID: 6714 Comm: syz.1.153 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:hugetlb_vma_assert_locked+0x1dd/0x250 mm/hugetlb.c:368
Code: 2e e8 e7 42 a1 ff eb 0c e8 e0 42 a1 ff eb 05 e8 d9 42 a1 ff 5b 41 5c 41 5d 41 5e 41 5f 5d e9 9a 10 62 09 cc e8 c4 42 a1 ff 90 <0f> 0b 90 eb e5 e8 b9 42 a1 ff 90 0f 0b 90 eb da 48 c7 c1 70 70 c3
RSP: 0018:ffffc9000d8bf7e8 EFLAGS: 00010287
RAX: ffffffff821f140c RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000f791000 RSI: 0000000000000b43 RDI: 0000000000000b44
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001b17f00 R12: ffff8880328d2200
R13: 1ffff1100aa4400c R14: dffffc0000000000 R15: 0000000000000080
FS:  00007fd2f33d56c0(0000) GS:ffff888125b03000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdd89bb8000 CR3: 0000000077c96000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 huge_pmd_unshare+0x2c8/0x540 mm/hugetlb.c:7622
 __unmap_hugepage_range+0x6e3/0x1aa0 mm/hugetlb.c:5901
 unmap_hugepage_range+0x32e/0x410 mm/hugetlb.c:6089
 hugetlb_vmdelete_list+0x171/0x1c0 fs/hugetlbfs/inode.c:494
 hugetlb_vmtruncate fs/hugetlbfs/inode.c:641 [inline]
 hugetlbfs_setattr+0x4d1/0x6d0 fs/hugetlbfs/inode.c:879
 notify_change+0xc1a/0xf40 fs/attr.c:546
 do_truncate+0x1a4/0x220 fs/open.c:68
 do_ftruncate+0x489/0x540 fs/open.c:195
 do_sys_ftruncate fs/open.c:210 [inline]
 __do_sys_ftruncate fs/open.c:215 [inline]
 __se_sys_ftruncate fs/open.c:213 [inline]
 __x64_sys_ftruncate+0x92/0xf0 fs/open.c:213
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd2f518eec9
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:00007fd2f33d5038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007fd2f53e6180 RCX: 00007fd2f518eec9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000d
RBP: 00007fd2f5211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd2f53e6218 R14: 00007fd2f53e6180 R15: 00007ffdf0b023f8
 </TASK>