do_open fs/namei.c:3641 [inline] path_openat+0x1df6/0x2990 fs/namei.c:3798 do_filp_open+0x1de/0x430 fs/namei.c:3825 ------------[ cut here ]------------ kernel BUG at include/linux/page-flags.h:314! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 13929 Comm: syz-executor.1 Not tainted 6.8.0-rc1-syzkaller-00385-g4854cf9c61d0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:folio_flags+0x1b9/0x1f0 include/linux/page-flags.h:314 Code: 41 83 e4 01 44 89 e6 e8 a5 4a ae ff 45 84 e4 0f 85 c8 fe ff ff e8 67 4f ae ff 48 c7 c6 c0 a2 da 8a 48 89 ef e8 d8 c5 ed ff 90 <0f> 0b e8 00 22 06 00 e9 6a fe ff ff 48 89 ef e8 f3 21 06 00 eb b6 RSP: 0018:ffffc90014797320 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc900056c1000 RDX: 0000000000040000 RSI: ffffffff81d9d748 RDI: ffffffff8b2fd500 RBP: ffffea000101aa00 R08: 0000000000000000 R09: fffffbfff1e75f72 R10: ffffffff8f3afb97 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea000101aa00 R14: 00000000000406a8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0063) knlGS:00000000f7fbfb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020770000 CR3: 000000007a030000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: folio_test_hugetlb include/linux/page-flags.h:849 [inline] PageHuge+0x215/0x2b0 mm/hugetlb.c:2173 isolate_migratepages_block+0x645/0x4cb0 mm/compaction.c:950 isolate_migratepages mm/compaction.c:2074 [inline] compact_zone+0x18ef/0x3f80 mm/compaction.c:2530 compact_node+0x13e/0x1e0 mm/compaction.c:2851 compact_nodes mm/compaction.c:2864 [inline] sysctl_compaction_handler mm/compaction.c:2910 [inline] sysctl_compaction_handler+0x11b/0x1c0 mm/compaction.c:2897 proc_sys_call_handler+0x4c6/0x6f0 fs/proc/proc_sysctl.c:595 call_write_iter include/linux/fs.h:2085 [inline] iter_file_splice_write+0x8fe/0x10a0 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x19b/0x6c0 fs/splice.c:1164 splice_direct_to_actor+0x347/0xa30 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0x17e/0x250 fs/splice.c:1233 do_sendfile+0xaa8/0xdb0 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+0x163/0x220 fs/read_write.c:1366 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x79/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x70/0x7a RIP: 0023:0xf7fe5579 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:00000000f7fbf5ac EFLAGS: 00000292 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000003 RDX: 0000000020002080 RSI: 0000000000000005 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_flags+0x1b9/0x1f0 include/linux/page-flags.h:314 Code: 41 83 e4 01 44 89 e6 e8 a5 4a ae ff 45 84 e4 0f 85 c8 fe ff ff e8 67 4f ae ff 48 c7 c6 c0 a2 da 8a 48 89 ef e8 d8 c5 ed ff 90 <0f> 0b e8 00 22 06 00 e9 6a fe ff ff 48 89 ef e8 f3 21 06 00 eb b6 RSP: 0018:ffffc90014797320 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc900056c1000 RDX: 0000000000040000 RSI: ffffffff81d9d748 RDI: ffffffff8b2fd500 RBP: ffffea000101aa00 R08: 0000000000000000 R09: fffffbfff1e75f72 R10: ffffffff8f3afb97 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea000101aa00 R14: 00000000000406a8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0063) knlGS:00000000f7fbfb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f65ffda4 CR3: 000000007a030000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 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