user_path_at_empty+0x2c/0x60 fs/namei.c:2910
 do_readlinkat+0xdd/0x310 fs/stat.c:490
 __do_sys_readlink fs/stat.c:523 [inline]
 __se_sys_readlink fs/stat.c:520 [inline]
 __x64_sys_readlink+0x78/0xb0 fs/stat.c:520
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
------------[ cut here ]------------
kernel BUG at include/linux/page-flags.h:314!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10399 Comm: syz-executor.1 Not tainted 6.6.0-syzkaller-16039-gac347a0655db #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:folio_flags+0x1b7/0x1f0 include/linux/page-flags.h:314
Code: 06 41 83 e4 01 44 89 e6 e8 46 59 b0 ff 45 84 e4 0f 85 c9 fe ff ff e8 08 5e b0 ff 48 c7 c6 60 5b da 8a 48 89 ef e8 79 e3 ee ff <0f> 0b e8 b2 8f 06 00 e9 6c fe ff ff 48 89 ef e8 a5 8f 06 00 eb b7
RSP: 0018:ffffc9000417f208 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000a7f1000
RDX: 0000000000040000 RSI: ffffffff81d73cf7 RDI: ffffffff8b2ee9c0
RBP: ffffea0000deff80 R08: 0000000000000000 R09: fffffbfff1e32462
R10: ffffffff8f192317 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea0000deefc0 R14: ffffea0000deff80 R15: 0000000000037bfe
FS:  00007f4a779776c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3d0978038 CR3: 000000002190b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 folio_test_hugetlb include/linux/page-flags.h:854 [inline]
 PageHuge+0x215/0x2b0 mm/hugetlb.c:2166
 isolate_migratepages_block+0x61b/0x4a40 mm/compaction.c:949
 isolate_migratepages mm/compaction.c:2052 [inline]
 compact_zone+0x18ef/0x3f70 mm/compaction.c:2508
 compact_node+0x13e/0x1e0 mm/compaction.c:2829
 compact_nodes mm/compaction.c:2842 [inline]
 sysctl_compaction_handler mm/compaction.c:2888 [inline]
 sysctl_compaction_handler+0x11b/0x1c0 mm/compaction.c:2875
 proc_sys_call_handler+0x4c6/0x6e0 fs/proc/proc_sysctl.c:600
 call_write_iter include/linux/fs.h:2020 [inline]
 do_iter_readv_writev+0x21e/0x3c0 fs/read_write.c:735
 do_iter_write+0x17f/0x7f0 fs/read_write.c:860
 vfs_iter_write+0x7a/0xb0 fs/read_write.c:901
 iter_file_splice_write+0x698/0xc00 fs/splice.c:736
 do_splice_from fs/splice.c:933 [inline]
 direct_splice_actor+0x118/0x180 fs/splice.c:1142
 splice_direct_to_actor+0x347/0xa30 fs/splice.c:1088
 do_splice_direct+0x1af/0x280 fs/splice.c:1194
 do_sendfile+0xb3e/0x1310 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1316 [inline]
 __se_sys_sendfile64 fs/read_write.c:1308 [inline]
 __x64_sys_sendfile64+0x155/0x220 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4a76c7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4a779770c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f4a76d9bf80 RCX: 00007f4a76c7cae9
RDX: 00000000200000c0 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 00007f4a76cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4a76d9bf80 R15: 00007ffc6cf1b0b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_flags+0x1b7/0x1f0 include/linux/page-flags.h:314
Code: 06 41 83 e4 01 44 89 e6 e8 46 59 b0 ff 45 84 e4 0f 85 c9 fe ff ff e8 08 5e b0 ff 48 c7 c6 60 5b da 8a 48 89 ef e8 79 e3 ee ff <0f> 0b e8 b2 8f 06 00 e9 6c fe ff ff 48 89 ef e8 a5 8f 06 00 eb b7
RSP: 0018:ffffc9000417f208 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000a7f1000
RDX: 0000000000040000 RSI: ffffffff81d73cf7 RDI: ffffffff8b2ee9c0
RBP: ffffea0000deff80 R08: 0000000000000000 R09: fffffbfff1e32462
R10: ffffffff8f192317 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea0000deefc0 R14: ffffea0000deff80 R15: 0000000000037bfe
FS:  00007f4a779776c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ae6b78038 CR3: 000000002190b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400