33 lines
1.1 KiB
Diff
33 lines
1.1 KiB
Diff
From 2844d07e4bba2301fef66f56574c92054bac7cac Mon Sep 17 00:00:00 2001
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From: Steffen Eiden <seiden@linux.ibm.com>
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Date: Mon, 25 Jul 2022 12:57:53 +0200
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Subject: [PATCH] zipl: Add missing check for a nullpointer.
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Fixes a bug that leads to a segmentation fault when no parmline is
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provided.
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Fixes: 11b401b5 ("zipl: move and make check for maximum command line length dynamic")
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Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
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Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
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Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
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---
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zipl/src/job.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/zipl/src/job.c b/zipl/src/job.c
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index ffdc297..b5bf5b2 100644
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--- a/zipl/src/job.c
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+++ b/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,
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if (!max_parm_size)
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max_parm_size = LEGACY_MAXIMUM_PARMLINE_SIZE;
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- len = strlen(common->parmline);
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+ len = common->parmline ? strlen(common->parmline) : 0;
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if (len > max_parm_size) {
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error_text("The length of the parameters line "
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"(%d bytes) exceeds the allowed maximum "
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--
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2.37.1
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