------------[ cut here ]------------
WARNING: CPU: 0 PID: 5517 at fs/crypto/fname.c:567 fscrypt_fname_siphash+0xe3/0x130 fs/crypto/fname.c:567
Modules linked in:
CPU: 0 PID: 5517 Comm: syz-executor.0 Not tainted 6.10.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:fscrypt_fname_siphash+0xe3/0x130 fs/crypto/fname.c:567
Code: 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 75 3f 48 8b 7b 08 48 83 c4 10 5b 5d 41 5c e9 a3 82 b7 08 e8 7e a8 78 ff 90 <0f> 0b 90 eb 93 48 89 14 24 e8 ff da d5 ff 48 8b 14 24 eb b7 e8 94
RSP: 0018:ffffc900077b76d0 EFLAGS: 00010287
RAX: 00000000000008b1 RBX: ffffc900077b7760 RCX: ffffc90002f82000
RDX: 0000000000040000 RSI: ffffffff8215d6f2 RDI: 0000000000000001
RBP: ffff888051ac7000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000000
R13: ffff88802936f0b0 R14: dffffc0000000000 R15: ffff88805d6220c4
FS:  0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000f5e4cb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7369aa8 CR3: 00000000005ba000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ext4fs_dirhash+0x3ab/0xb30 fs/ext4/hash.c:268
 ext4fs_dirhash+0x241/0x2d0 fs/ext4/hash.c:322
 htree_dirblock_to_tree+0x743/0xd20 fs/ext4/namei.c:1124
 ext4_htree_fill_tree+0x398/0xcb0 fs/ext4/namei.c:1219
 ext4_dx_readdir fs/ext4/dir.c:597 [inline]
 ext4_readdir+0x1ffa/0x3700 fs/ext4/dir.c:142
 iterate_dir+0x53e/0xb60 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __ia32_sys_getdents64+0x14f/0x2e0 fs/readdir.c:394
 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: 0023:0xf725a579
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:00000000f5e4c5ac EFLAGS: 00000292 ORIG_RAX: 00000000000000dc
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
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