From f7e506ec4a9966be8b2a87d3324302f0f5dd5a29 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 17 Jul 2021 16:36:07 +0200 Subject: platform/x86: think-lmi: Fix possible mem-leaks on tlmi_analyze() error-exit Fix 2 possible memleaks on error-exits from tlmi_analyze(): 1. If the kzalloc of pwd_power fails, then not only free the atributes, but also the allocated pwd_admin struct. 2. Freeing the attributes should also free the possible_values strings. Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20210717143607.3580-3-hdegoede@redhat.com --- drivers/platform/x86/think-lmi.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index c22edcf26aaa..6cfed4427fb0 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -866,7 +866,7 @@ static int tlmi_analyze(void) tlmi_priv.pwd_power = kzalloc(sizeof(struct tlmi_pwd_setting), GFP_KERNEL); if (!tlmi_priv.pwd_power) { ret = -ENOMEM; - goto fail_clear_attr; + goto fail_free_pwd_admin; } strscpy(tlmi_priv.pwd_power->kbdlang, "us", TLMI_LANG_MAXLEN); tlmi_priv.pwd_power->encoding = TLMI_ENCODING_ASCII; @@ -882,9 +882,15 @@ static int tlmi_analyze(void) return 0; +fail_free_pwd_admin: + kfree(tlmi_priv.pwd_admin); fail_clear_attr: - for (i = 0; i < TLMI_SETTINGS_COUNT; ++i) - kfree(tlmi_priv.setting[i]); + for (i = 0; i < TLMI_SETTINGS_COUNT; ++i) { + if (tlmi_priv.setting[i]) { + kfree(tlmi_priv.setting[i]->possible_values); + kfree(tlmi_priv.setting[i]); + } + } return ret; } -- cgit v1.2.3