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zipl: Add missing check for a nullpointer.

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Fixes a bug that leads to a segmentation fault when no parmline is
provided.

Fixes: 11b401b5 ("zipl: move and make check for maximum command line length dynamic")
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Steffen Eiden
2022-07-25 12:57:53 +02:00
committed by Jan Höppner
parent acf30de415
commit 6ff8202fa9
1 changed files with 1 additions and 1 deletions
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2
zipl/src/job.c
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@@ -790,7 +790,7 @@ check_common_ipl_data(struct job_common_ipl_data *common, const char *section,
if (!max_parm_size)
max_parm_size = LEGACY_MAXIMUM_PARMLINE_SIZE;
len = strlen(common->parmline);
len = common->parmline ? strlen(common->parmline) : 0;
if (len > max_parm_size) {
error_text("The length of the parameters line "
"(%d bytes) exceeds the allowed maximum "