EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs warning (device loop4): __ext4fs_dirhash:270: inode #20: comm syz-executor.4: Siphash requires key
=====================================================
BUG: KMSAN: uninit-value in ext4_inlinedir_to_tree+0xde2/0x15a0 fs/ext4/inline.c:1415
 ext4_inlinedir_to_tree+0xde2/0x15a0 fs/ext4/inline.c:1415
 ext4_htree_fill_tree+0x1941/0x1cd0 fs/ext4/namei.c:1210
 ext4_dx_readdir fs/ext4/dir.c:597 [inline]
 ext4_readdir+0x4bbf/0x5b00 fs/ext4/dir.c:142
 iterate_dir+0x688/0x870 fs/readdir.c:110
 ovl_dir_read+0x14d/0x840 fs/overlayfs/readdir.c:313
 ovl_check_d_type_supported+0x6a/0x110 fs/overlayfs/readdir.c:1079
 ovl_make_workdir fs/overlayfs/super.c:673 [inline]
 ovl_get_workdir+0x9c8/0x2780 fs/overlayfs/super.c:814
 ovl_fill_super+0x153c/0x62a0 fs/overlayfs/super.c:1382
 vfs_get_super fs/super.c:1268 [inline]
 get_tree_nodev+0x180/0x340 fs/super.c:1287
 ovl_get_tree+0x34/0x40 fs/overlayfs/params.c:637
 vfs_get_tree+0xa7/0x570 fs/super.c:1779
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352
 path_mount+0x742/0x1f20 fs/namespace.c:3679
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x725/0x810 fs/namespace.c:3875
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875
 x64_sys_call+0x2bf4/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable hinfo created at:
 ext4_htree_fill_tree+0x52/0x1cd0 fs/ext4/namei.c:1185
 ext4_dx_readdir fs/ext4/dir.c:597 [inline]
 ext4_readdir+0x4bbf/0x5b00 fs/ext4/dir.c:142

CPU: 0 PID: 6968 Comm: syz-executor.4 Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
=====================================================