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gfio: prevent multitext crash on invalid update
author
Jens Axboe
<axboe@kernel.dk>
Mon, 12 Mar 2012 10:05:46 +0000
(11:05 +0100)
committer
Jens Axboe
<axboe@kernel.dk>
Mon, 12 Mar 2012 10:05:46 +0000
(11:05 +0100)
Signed-off-by: Jens Axboe <axboe@kernel.dk>
gfio.c
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diff --git
a/gfio.c
b/gfio.c
index 6a227772800aeda32647b82d034747f9422bddca..7f4782821dedb6c20e22479b019229aad1e5691f 100644
(file)
--- a/
gfio.c
+++ b/
gfio.c
@@
-263,7
+263,7
@@
static void multitext_set_entry(struct multitext_widget *mt, unsigned int index)
{
if (index >= mt->max_text)
return;
- if (!mt->text[index])
+ if (!mt->text
|| !mt->text
[index])
return;
mt->cur_text = index;
@@
-273,6
+273,9
@@
static void multitext_set_entry(struct multitext_widget *mt, unsigned int index)
static void multitext_update_entry(struct multitext_widget *mt,
unsigned int index, const char *text)
{
+ if (!mt->text)
+ return;
+
if (mt->text[index])
free(mt->text[index]);