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From 7fa914a178bbda39e3ed75326e18b183784fd57e Mon Sep 17 00:00:00 2001
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From: Wu Guanghao <wuguanghao3@huawei.com>
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Date: Wed, 28 Jul 2021 09:56:45 +0800
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Subject: [PATCH 35/46] ss_add_info_dir: fix error handling when memory
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allocation fails
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Content-Type: text/plain
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If the realloc() and malloc() calls fail, avoid a memory leak as well
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as a potential seg fault.
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[ Fix error code setting to avoid depending on malloc() and realloc()
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setting errno. -- TYT ]
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Signed-off-by: Wu Guanghao <wuguanghao3@huawei.com>
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Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
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Reviewed-by: Wu Bo <wubo40@huawei.com>
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Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Signed-off-by: Lukas Czerner <lczerner@redhat.com>
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---
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lib/ss/help.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/lib/ss/help.c b/lib/ss/help.c
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index 5204401b..96eb1092 100644
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--- a/lib/ss/help.c
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+++ b/lib/ss/help.c
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@@ -148,13 +148,16 @@ void ss_add_info_dir(int sci_idx, char *info_dir, int *code_ptr)
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dirs = (char **)realloc((char *)dirs,
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(unsigned)(n_dirs + 2)*sizeof(char *));
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if (dirs == (char **)NULL) {
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- info->info_dirs = (char **)NULL;
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- *code_ptr = errno;
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+ *code_ptr = ENOMEM;
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return;
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}
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info->info_dirs = dirs;
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dirs[n_dirs + 1] = (char *)NULL;
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dirs[n_dirs] = malloc((unsigned)strlen(info_dir)+1);
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+ if (dirs[n_dirs] == (char *)NULL) {
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+ *code_ptr = ENOMEM;
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+ return;
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+ }
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strcpy(dirs[n_dirs], info_dir);
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*code_ptr = 0;
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}
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--
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2.35.1
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