linux-kernel - [PATCH wireless-drivers v3] iwlwifi: actually check allocated conf

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Message-Id: <20200417074558.12316-1-sedat.dilek@gmail.com>
Date:   Fri, 17 Apr 2020 09:45:58 +0200
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     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>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Chris Rorvick <chris@...vick.com>,
        Sedat Dilek <sedat.dilek@...il.com>
Subject: [PATCH wireless-drivers v3] iwlwifi: actually check allocated conf_tlv pointer

From: Chris Rorvick <chris@...vick.com>

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.

Fixes: 71bc0334a637 ("iwlwifi: check allocated pointer when allocating conf_tlvs")
Tweeted-by: @grsecurity
Message-Id: <20200402050219.4842-1-chris@...vick.com>
Signed-off-by: Chris Rorvick <chris@...vick.com>
Signed-off-by: Sedat Dilek <sedat.dilek@...il.com>
---
Changes v1->v2:
- Fix typo s/fw.dbg_conf_tlv/fw.dbg.conf_tlv
- Add Fixes tag as suggested by Kalle
- v2 on top of wireless-drivers.git as suggested by Kalle
Changes v2->v3:
- Add Changelog

 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..eeb750bdbda1 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -1467,7 +1467,7 @@ static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
 				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;
 		}
 	}
-- 
2.26.1