------------[ cut here ]------------
WARNING: CPU: 0 PID: 13503 at fs/crypto/fname.c:543 fscrypt_fname_siphash+0xa4/0xe0 fs/crypto/fname.c:543
Modules linked in:
CPU: 0 PID: 13503 Comm: syz.0.1888 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:fscrypt_fname_siphash+0xa4/0xe0 fs/crypto/fname.c:543
Code: 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 75 32 8b 33 49 83 c6 40 4c 89 f2 5b 41 5c 41 5e 41 5f e9 f1 a6 1f 02 e8 5c bc 99 ff <0f> 0b eb b3 44 89 f9 80 e1 07 38 c1 7c 9e 4c 89 ff e8 a6 29 df ff
RSP: 0018:ffffc9000304f578 EFLAGS: 00010283
RAX: ffffffff81de0114 RBX: ffffc9000304f660 RCX: 0000000000080000
RDX: ffffc900154d7000 RSI: 00000000000000ca RDI: 00000000000000cb
RBP: ffffc9000304f6d0 R08: ffff888065698000 R09: 0000000000000007
R10: 0000000000000006 R11: 0000000000000002 R12: dffffc0000000000
R13: 000000008d4c4d91 R14: ffff88804f214000 R15: ffff88804f214050
FS:  00007f112ec5f6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f24840fb178 CR3: 000000001df0f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ext4fs_dirhash+0x8bc/0xf40 fs/ext4/hash.c:268
 ext4fs_dirhash+0x150/0x2d0 fs/ext4/hash.c:322
 htree_dirblock_to_tree+0x6c9/0xe70 fs/ext4/namei.c:1125
 ext4_htree_fill_tree+0x5d4/0x10e0 fs/ext4/namei.c:1220
 ext4_dx_readdir fs/ext4/dir.c:609 [inline]
 ext4_readdir+0x2c16/0x3a60 fs/ext4/dir.c:145
 iterate_dir+0x218/0x560 fs/readdir.c:-1
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64+0xe5/0x260 fs/readdir.c:354
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1130df7969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f112ec5f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007f113101efa0 RCX: 00007f1130df7969
RDX: 0000000000001000 RSI: 0000200000000f80 RDI: 0000000000000004
RBP: 00007f1130e79ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f113101efa0 R15: 00007ffd6b5a12d8
 </TASK>