------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:80! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7634 Comm: syz-executor.2 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:page_table_check_clear.part.0+0x31c/0x380 mm/page_table_check.c:80 Code: c1 43 04 8d 58 ff 31 ff 89 de e8 bf 2b a2 ff 85 db 0f 89 7c fe ff ff e8 92 2f a2 ff 0f 0b e8 8b 2f a2 ff 0f 0b e8 84 2f a2 ff <0f> 0b e8 7d 2f a2 ff 0f 0b e8 76 2f a2 ff 0f 0b 48 c7 c7 40 e7 e7 RSP: 0018:ffffc900058b7620 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880169bdb10 RCX: 0000000000000000 RDX: ffff888022308000 RSI: ffffffff81e1f42c RDI: 0000000000000005 RBP: ffff8880169bdad0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557215888 CR3: 0000000018b68000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: page_table_check_clear include/linux/mmzone.h:2003 [inline] __page_table_check_pte_clear+0x265/0x2b0 mm/page_table_check.c:155 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline] ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1086 [inline] zap_pte_range mm/memory.c:1413 [inline] zap_pmd_range mm/memory.c:1563 [inline] zap_pud_range mm/memory.c:1592 [inline] zap_p4d_range mm/memory.c:1613 [inline] unmap_page_range+0x2aa6/0x38e0 mm/memory.c:1634 unmap_single_vma+0x19a/0x2b0 mm/memory.c:1680 unmap_vmas+0x234/0x380 mm/memory.c:1719 exit_mmap+0x190/0x930 mm/mmap.c:3134 __mmput+0x128/0x4c0 kernel/fork.c:1347 mmput+0x60/0x70 kernel/fork.c:1369 exit_mm kernel/exit.c:564 [inline] do_exit+0x9d7/0x29f0 kernel/exit.c:858 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021 get_signal+0x2315/0x25b0 kernel/signal.c:2874 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f900d88c169 Code: Unable to access opcode bytes at 0x7f900d88c13f. RSP: 002b:00007f900e5d6218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f900d9abf88 RCX: 00007f900d88c169 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f900d9abf88 RBP: 00007f900d9abf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f900d9abf8c R13: 00007ffe191998bf R14: 00007f900e5d6300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:page_table_check_clear.part.0+0x31c/0x380 mm/page_table_check.c:80 Code: c1 43 04 8d 58 ff 31 ff 89 de e8 bf 2b a2 ff 85 db 0f 89 7c fe ff ff e8 92 2f a2 ff 0f 0b e8 8b 2f a2 ff 0f 0b e8 84 2f a2 ff <0f> 0b e8 7d 2f a2 ff 0f 0b e8 76 2f a2 ff 0f 0b 48 c7 c7 40 e7 e7 RSP: 0018:ffffc900058b7620 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880169bdb10 RCX: 0000000000000000 RDX: ffff888022308000 RSI: ffffffff81e1f42c RDI: 0000000000000005 RBP: ffff8880169bdad0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557215888 CR3: 0000000018b68000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400