tree b5d48511119f5041137bc60b961a3829845c60c2
parent 10b6dbab709bf16f3a5f497b273819cafc9286bf
author Pierre-Clément Tosi <ptosi@google.com> 1696930102 +0100
committer Pierre-Clément Tosi <ptosi@google.com> 1697040140 +0100

FROMGIT: libfdt: fdt_path_offset_namelen: Reject empty path

Reject empty paths and negative lengths, according to the DT spec v0.4:

    The convention for specifying a device path is:
        /node-name-1/node-name-2/node-name-N

    The path to the root node is /.

This prevents the access to path[0] from ever being out-of-bounds.

Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
Message-ID: <20231010092822.qo2nxc3g47t26dqs@google.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Test: N/A
Change-Id: I8efee39a06fa62f1f057a975e8133a295be0a656