------------[ cut here ]------------ WARNING: CPU: 3 PID: 8811 at mm/page_table_check.c:209 page_table_check_pte_flags mm/page_table_check.c:209 [inline] WARNING: CPU: 3 PID: 8811 at mm/page_table_check.c:209 __page_table_check_ptes_set+0x28d/0x3e0 mm/page_table_check.c:220 Modules linked in: CPU: 3 UID: 0 PID: 8811 Comm: syz.1.929 Not tainted 6.11.0-rc3-syzkaller-00007-gd74da846046a #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_pte_flags mm/page_table_check.c:209 [inline] RIP: 0010:__page_table_check_ptes_set+0x28d/0x3e0 mm/page_table_check.c:220 Code: ff 48 83 fd 1d 74 1d e8 b1 3a 97 ff 83 ed 1a bf 01 00 00 00 89 ee e8 e2 3c 97 ff 83 fd 01 0f 87 64 fe ff ff e8 94 3a 97 ff 90 <0f> 0b 90 e9 56 fe ff ff e8 86 3a 97 ff 48 8b 1c 24 31 ff bd 01 00 RSP: 0018:ffffc90002a96c10 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff888000df4000 RCX: ffffc90034718000 RDX: 0000000000040000 RSI: ffffffff81f3e82c RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888027a25f00 R14: 0000000000000004 R15: 1ffff92000552d84 FS: 0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f56f5b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000fff7c30c CR3: 000000005179c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: page_table_check_ptes_set include/linux/page_table_check.h:74 [inline] set_ptes include/linux/pgtable.h:267 [inline] try_to_migrate_one+0x1c4e/0x35d0 mm/rmap.c:2287 rmap_walk_anon+0x2c8/0x700 mm/rmap.c:2625 rmap_walk mm/rmap.c:2703 [inline] rmap_walk mm/rmap.c:2698 [inline] try_to_migrate+0x2ba/0x300 mm/rmap.c:2353 migrate_folio_unmap mm/migrate.c:1248 [inline] migrate_pages_batch+0xa16/0x2fe0 mm/migrate.c:1712 migrate_pages_sync mm/migrate.c:1878 [inline] migrate_pages+0x1b66/0x27a0 mm/migrate.c:1987 compact_zone+0x1f68/0x4280 mm/compaction.c:2671 compact_node+0x1a2/0x2d0 mm/compaction.c:2935 compact_nodes mm/compaction.c:2957 [inline] sysctl_compaction_handler mm/compaction.c:3008 [inline] sysctl_compaction_handler+0x145/0x220 mm/compaction.c:2995 proc_sys_call_handler+0x4cc/0x6f0 fs/proc/proc_sysctl.c:590 iter_file_splice_write+0x906/0x10b0 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x19b/0x6d0 fs/splice.c:1164 splice_direct_to_actor+0x346/0xa40 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0x17e/0x250 fs/splice.c:1233 do_sendfile+0xb1e/0xe50 fs/read_write.c:1295 __do_compat_sys_sendfile fs/read_write.c:1377 [inline] __se_compat_sys_sendfile fs/read_write.c:1366 [inline] __ia32_compat_sys_sendfile+0x163/0x230 fs/read_write.c:1366 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: 0023:0xf740e579 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:00000000f56f556c EFLAGS: 00000296 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000000000006 RDX: 00000000200000c0 RSI: 0000000000000005 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- 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