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kernel BUG at mm/page_table_check.c:87!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5115 Comm: syz.0.0 Not tainted 6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:page_table_check_clear+0x3a5/0x550 mm/page_table_check.c:87
Code: 4a fd ff ff e8 2c 5e 89 ff 90 0f 0b e8 24 5e 89 ff 90 0f 0b e8 1c 5e 89 ff 90 0f 0b e8 14 5e 89 ff 90 0f 0b e8 0c 5e 89 ff 90 <0f> 0b f3 0f 1e fa 4c 89 fe 48 81 e6 c0 0f 00 00 31 ff e8 d4 62 89
RSP: 0018:ffffc9000de0f1a0 EFLAGS: 00010283
RAX: ffffffff820b79d4 RBX: ffff88801b8c8098 RCX: 0000000000040000
RDX: ffffc9000b5ca000 RSI: 00000000000011ca RDI: 00000000000011cb
RBP: 00000000ffffffff R08: ffffffff820b78a5 R09: 1ffff11003719013
R10: dffffc0000000000 R11: ffffed1003719014 R12: ffff88801b8c809c
R13: ffff88801b8c8050 R14: 1ffffffff34881b4 R15: 0000000000000001
FS:  00007f13bb2c56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000004052e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 page_table_check_pmd_clear include/linux/page_table_check.h:57 [inline]
 pmdp_huge_get_and_clear arch/x86/include/asm/pgtable.h:1390 [inline]
 pmdp_huge_get_and_clear_full include/linux/pgtable.h:636 [inline]
 zap_huge_pmd+0x940/0xc40 mm/huge_memory.c:2060
 zap_pmd_range mm/memory.c:1719 [inline]
 zap_pud_range mm/memory.c:1768 [inline]
 zap_p4d_range mm/memory.c:1789 [inline]
 unmap_page_range+0x762/0x40e0 mm/memory.c:1810
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1900
 unmap_region+0x214/0x380 mm/vma.c:354
 mmap_region+0x23fa/0x2a30 mm/mmap.c:1583
 do_mmap+0x8f0/0x1000 mm/mmap.c:496
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13ba57dff9
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:00007f13bb2c5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f13ba735f80 RCX: 00007f13ba57dff9
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f13ba5f0296 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f13ba735f80 R15: 00007ffdd4fac598
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:page_table_check_clear+0x3a5/0x550 mm/page_table_check.c:87
Code: 4a fd ff ff e8 2c 5e 89 ff 90 0f 0b e8 24 5e 89 ff 90 0f 0b e8 1c 5e 89 ff 90 0f 0b e8 14 5e 89 ff 90 0f 0b e8 0c 5e 89 ff 90 <0f> 0b f3 0f 1e fa 4c 89 fe 48 81 e6 c0 0f 00 00 31 ff e8 d4 62 89
RSP: 0018:ffffc9000de0f1a0 EFLAGS: 00010283
RAX: ffffffff820b79d4 RBX: ffff88801b8c8098 RCX: 0000000000040000
RDX: ffffc9000b5ca000 RSI: 00000000000011ca RDI: 00000000000011cb
RBP: 00000000ffffffff R08: ffffffff820b78a5 R09: 1ffff11003719013
R10: dffffc0000000000 R11: ffffed1003719014 R12: ffff88801b8c809c
R13: ffff88801b8c8050 R14: 1ffffffff34881b4 R15: 0000000000000001
FS:  00007f13bb2c56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000004052e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400