linux-kernel - [PATCH] iwlwifi: actually check allocated conf

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Message-Id: <20200402050219.4842-1-chris@rorvick.com>
Date:   Thu,  2 Apr 2020 00:02:19 -0500
From:   Chris Rorvick <chris@...vick.com>
To:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Chris Rorvick <chris@...vick.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH] iwlwifi: actually check allocated conf_tlv pointer

Commit 71bc0334a637 ("iwlwifi: check allocated pointer when allocating
conf_tlvs") attempted to fix a typoe introduced by commit 17b809c9b22e
("iwlwifi: dbg: move debug data to a struct") but does not implement the
check correctly.

Tweeted-by: @grsecurity
Signed-off-by: Chris Rorvick <chris@...vick.com>
---
In this wasn't picked up?

 drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
index ff52e69c1c80..a37f330e7bd4 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -1465,11 +1465,11 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 		if (pieces->dbg_conf_tlv[i]) {
 			drv->fw.dbg.conf_tlv[i] =
 				kmemdup(pieces->dbg_conf_tlv[i],
 					pieces->dbg_conf_tlv_len[i],
 					GFP_KERNEL);
-			if (!pieces->dbg_conf_tlv[i])
+			if (!drv->fw.dbg_conf_tlv[i])
 				goto out_free_fw;
 		}
 	}
 
 	memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
-- 
2.24.1