From mboxrd@z Thu Jan 1 00:00:00 1970 From: matthias.bgg at kernel.org Date: Tue, 6 Apr 2021 11:04:35 +0200 Subject: [PATCH v2] smbios: Fix table when no string is present Message-ID: <20210406090435.19357-1-matthias.bgg@kernel.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Matthias Brugger When no string is present in a table, next_ptr points to the same location as eos. When calculating the string table length, we would only reserve one \0. By spec a SMBIOS table has to end with two \0\0 when no strings a present. Signed-off-by: Matthias Brugger --- Changes in v2: - check in smbios_string_table_len if no string present and return value accordingly lib/smbios.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/smbios.c b/lib/smbios.c index 9eb226ec9f..fd57d8694f 100644 --- a/lib/smbios.c +++ b/lib/smbios.c @@ -191,6 +191,10 @@ int smbios_update_version(const char *version) */ static int smbios_string_table_len(const struct smbios_ctx *ctx) { + /* In case no string is defined we have to return two \0 */ + if (ctx->next_ptr == ctx->eos) + return 2; + /* Allow for the final \0 after all strings */ return (ctx->next_ptr + 1) - ctx->eos; } -- 2.30.2