63 lines
2.0 KiB
Diff
63 lines
2.0 KiB
Diff
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From 6e5d16a012e1845774da106846b87090d39ea8f3 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
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Date: Mon, 3 May 2021 17:11:09 +0200
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Subject: [PATCH] libselinux: store_stem(): do not free possible non-heap
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object
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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GCC 11 complains:
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In file included from label_file.c:24:
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In function ‘store_stem’,
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inlined from ‘load_mmap’ at label_file.c:277:12,
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inlined from ‘process_file’ at label_file.c:551:5:
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label_file.h:289:25: error: ‘free’ called on pointer ‘*mmap_area.next_addr’ with nonzero offset 4 [-Werror=free-nonheap-object]
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289 | free(buf);
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| ^~~~~~~~~
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Free the pointer on failure at the caller instead of inside `store_stem()`.
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Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
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---
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libselinux/src/label_file.h | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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diff --git a/libselinux/src/label_file.h b/libselinux/src/label_file.h
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index baed3341b6b3..9f6337012216 100644
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--- a/libselinux/src/label_file.h
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+++ b/libselinux/src/label_file.h
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@@ -286,7 +286,6 @@ static inline int store_stem(struct saved_data *data, char *buf, int stem_len)
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tmp_arr = realloc(data->stem_arr,
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sizeof(*tmp_arr) * alloc_stems);
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if (!tmp_arr) {
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- free(buf);
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return -1;
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}
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data->alloc_stems = alloc_stems;
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@@ -308,6 +307,7 @@ static inline int find_stem_from_spec(struct saved_data *data, const char *buf)
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int stem_len = get_stem_from_spec(buf);
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int stemid;
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char *stem;
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+ int r;
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if (!stem_len)
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return -1;
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@@ -321,7 +321,11 @@ static inline int find_stem_from_spec(struct saved_data *data, const char *buf)
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if (!stem)
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return -1;
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- return store_stem(data, stem, stem_len);
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+ r = store_stem(data, stem, stem_len);
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+ if (r < 0)
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+ free(stem);
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+
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+ return r;
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}
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/* This will always check for buffer over-runs and either read the next entry
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--
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2.32.0
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