From e2ef147686751f1a08143bb7b3bda629cceb9369 Mon Sep 17 00:00:00 2001 From: Sharon Dvir Date: Tue, 21 Feb 2017 11:12:12 +0200 Subject: [PATCH] iwlwifi: mvm: handle possible BIOS bug In iwl_mvm_sar_get_ewrd_table() In case of a BIOS bug, n_profiles might be 0 thus we need to return an error value. Found by Klocwork. Signed-off-by: Sharon Dvir Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index b5c7dff..e6c9528 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -1201,6 +1201,12 @@ static int iwl_mvm_sar_get_ewrd_table(struct iwl_mvm *mvm) enabled = !!(wifi_pkg->package.elements[1].integer.value); n_profiles = wifi_pkg->package.elements[2].integer.value; + /* in case of BIOS bug */ + if (n_profiles <= 0) { + ret = -EINVAL; + goto out_free; + } + for (i = 0; i < n_profiles; i++) { /* the tables start at element 3 */ static int pos = 3; -- 2.7.4