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authorMark Pearson <mpearson-lenovo@squebb.ca>2023-04-03 04:31:19 +0300
committerHans de Goede <hdegoede@redhat.com>2023-04-03 12:36:23 +0300
commite7d796fccdc8d17c2d21817ebe4c7bf5bbfe5433 (patch)
tree0f602a55dce8e7bb81b60a98a122a8702fd8fe8e /drivers/platform
parenta3c4c053014585dcf20f4df954791b74d8a8afcd (diff)
downloadlinux-e7d796fccdc8d17c2d21817ebe4c7bf5bbfe5433.tar.xz
platform/x86: think-lmi: Fix memory leaks when parsing ThinkStation WMI strings
My previous commit introduced a memory leak where the item allocated from tlmi_setting was not freed. This commit also renames it to avoid confusion with the similarly name variable in the same function. Fixes: 8a02d70679fc ("platform/x86: think-lmi: Add possible_values for ThinkStation") Reported-by: Mirsad Todorovac <mirsad.todorovac@alu.unizg.hr> Link: https://lore.kernel.org/lkml/df26ff45-8933-f2b3-25f4-6ee51ccda7d8@gmx.de/T/ Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20230403013120.2105-1-mpearson-lenovo@squebb.ca Tested-by: Mario Limonciello <mario.limonciello@amd.com> Tested-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/think-lmi.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
index 6034df6d577d..87f832142d8d 100644
--- a/drivers/platform/x86/think-lmi.c
+++ b/drivers/platform/x86/think-lmi.c
@@ -1459,10 +1459,10 @@ static int tlmi_analyze(void)
* name string.
* Try and pull that out if it's available.
*/
- char *item, *optstart, *optend;
+ char *optitem, *optstart, *optend;
- if (!tlmi_setting(setting->index, &item, LENOVO_BIOS_SETTING_GUID)) {
- optstart = strstr(item, "[Optional:");
+ if (!tlmi_setting(setting->index, &optitem, LENOVO_BIOS_SETTING_GUID)) {
+ optstart = strstr(optitem, "[Optional:");
if (optstart) {
optstart += strlen("[Optional:");
optend = strstr(optstart, "]");
@@ -1471,6 +1471,7 @@ static int tlmi_analyze(void)
kstrndup(optstart, optend - optstart,
GFP_KERNEL);
}
+ kfree(optitem);
}
}
/*