R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:90! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 9039 Comm: syz.3.1114 Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #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.part.0+0x389/0x540 mm/page_table_check.c:90 Code: 00 e8 cb 1a f4 ff b8 ff ff ff ff f0 0f c1 43 04 8d 58 ff 31 ff 89 de e8 55 cc 92 ff 85 db 0f 89 7d fe ff ff e8 08 ca 92 ff 90 <0f> 0b e8 00 ca 92 ff 48 89 ef e8 b8 f1 ff ff 48 83 c4 10 5b 5d 41 RSP: 0018:ffffc90002c8f408 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffffffff81f9eeab RDX: ffff88801ef8c880 RSI: ffffffff81f9eeb8 RDI: 0000000000000005 RBP: ffff888041c1e050 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000200 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f5746b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7fb9ef4 CR3: 0000000074d40000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000fe0 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: page_table_check_clear arch/x86/include/asm/pgtable.h:274 [inline] __page_table_check_pmd_clear+0x3a9/0x600 mm/page_table_check.c:180 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+0x264/0x1380 mm/huge_memory.c:2071 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+0x15ef/0x3ce0 mm/memory.c:1810 unmap_single_vma+0x194/0x2b0 mm/memory.c:1856 unmap_vmas+0x22f/0x490 mm/memory.c:1900 unmap_region+0x201/0x480 mm/vma.c:354 mmap_region+0x1c00/0x2a50 mm/mmap.c:1573 do_mmap+0xc00/0xfc0 mm/mmap.c:496 vm_mmap_pgoff+0x1ba/0x360 mm/util.c:588 ksys_mmap_pgoff+0x7d/0x5c0 mm/mmap.c:542 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fc0579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f574656c EFLAGS: 00000296 ORIG_RAX: 00000000000000c0 RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000b36000 RDX: 0000000006ebbeee RSI: 0000000000008031 RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:page_table_check_clear.part.0+0x389/0x540 mm/page_table_check.c:90 Code: 00 e8 cb 1a f4 ff b8 ff ff ff ff f0 0f c1 43 04 8d 58 ff 31 ff 89 de e8 55 cc 92 ff 85 db 0f 89 7d fe ff ff e8 08 ca 92 ff 90 <0f> 0b e8 00 ca 92 ff 48 89 ef e8 b8 f1 ff ff 48 83 c4 10 5b 5d 41 RSP: 0018:ffffc90002c8f408 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffffffff81f9eeab RDX: ffff88801ef8c880 RSI: ffffffff81f9eeb8 RDI: 0000000000000005 RBP: ffff888041c1e050 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000200 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f5746b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7fb9ef4 CR3: 0000000074d40000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000fe0 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi