* [PATCH] mailmap: xcalloc mailmap_info
@ 2011-11-16 23:51 Marc-André Lureau
2011-11-17 1:10 ` Junio C Hamano
0 siblings, 1 reply; 3+ messages in thread
From: Marc-André Lureau @ 2011-11-16 23:51 UTC (permalink / raw)
To: git; +Cc: Marc-André Lureau
This is to avoid reaching free of uninitialized members.
With an invalid .mailmap (and perhaps in other cases), it can reach
free(mi->name) with garbage for example.
---
mailmap.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mailmap.c b/mailmap.c
index 02fcfde..fbf7764 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -88,7 +88,7 @@ static void add_mapping(struct string_list *map,
me->email = xstrdup(new_email);
}
} else {
- struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info));
+ struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info));
debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index);
if (new_name)
mi->name = xstrdup(new_name);
--
1.7.7
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] mailmap: xcalloc mailmap_info
2011-11-16 23:51 [PATCH] mailmap: xcalloc mailmap_info Marc-André Lureau
@ 2011-11-17 1:10 ` Junio C Hamano
2011-11-17 1:25 ` Marc-André Lureau
0 siblings, 1 reply; 3+ messages in thread
From: Junio C Hamano @ 2011-11-17 1:10 UTC (permalink / raw)
To: Marc-André Lureau; +Cc: git
Marc-André Lureau <marcandre.lureau@gmail.com> writes:
> This is to avoid reaching free of uninitialized members.
>
> With an invalid .mailmap (and perhaps in other cases), it can reach
> free(mi->name) with garbage for example.
> ---
Sign-off?
Thanks. We might want to turn xmalloc() followed by memset(,0,) for the
allocation of the mailmap entry itself in the same function, but that is a
minor issue.
> mailmap.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/mailmap.c b/mailmap.c
> index 02fcfde..fbf7764 100644
> --- a/mailmap.c
> +++ b/mailmap.c
> @@ -88,7 +88,7 @@ static void add_mapping(struct string_list *map,
> me->email = xstrdup(new_email);
> }
> } else {
> - struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info));
> + struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info));
> debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index);
> if (new_name)
> mi->name = xstrdup(new_name);
^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH] mailmap: xcalloc mailmap_info
2011-11-17 1:10 ` Junio C Hamano
@ 2011-11-17 1:25 ` Marc-André Lureau
0 siblings, 0 replies; 3+ messages in thread
From: Marc-André Lureau @ 2011-11-17 1:25 UTC (permalink / raw)
To: git; +Cc: Marc-André Lureau
This is to avoid reaching free of uninitialized members.
With an invalid .mailmap (and perhaps in other cases), it can reach
free(mi->name) with garbage for example.
Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
---
mailmap.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/mailmap.c b/mailmap.c
index 02fcfde..8c3196c 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -70,8 +70,7 @@ static void add_mapping(struct string_list *map,
} else {
/* create mailmap entry */
struct string_list_item *item = string_list_insert_at_index(map, index, old_email);
- item->util = xmalloc(sizeof(struct mailmap_entry));
- memset(item->util, 0, sizeof(struct mailmap_entry));
+ item->util = xcalloc(1, sizeof(struct mailmap_entry));
((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1;
}
me = (struct mailmap_entry *)map->items[index].util;
@@ -88,7 +87,7 @@ static void add_mapping(struct string_list *map,
me->email = xstrdup(new_email);
}
} else {
- struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info));
+ struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info));
debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index);
if (new_name)
mi->name = xstrdup(new_name);
--
1.7.7
^ permalink raw reply related [flat|nested] 3+ messages in thread
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2011-11-16 23:51 [PATCH] mailmap: xcalloc mailmap_info Marc-André Lureau
2011-11-17 1:10 ` Junio C Hamano
2011-11-17 1:25 ` Marc-André Lureau
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