From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eliad Peller , Emmanuel Grumbach , Johannes Berg Subject: [PATCH 3.10 03/27] cfg80211: fix mic_failure tracing Date: Tue, 5 Aug 2014 11:13:55 -0700 Message-Id: <20140805181344.374763871@linuxfoundation.org> In-Reply-To: <20140805181344.268039690@linuxfoundation.org> References: <20140805181344.268039690@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eliad Peller commit 8c26d458394be44e135d1c6bd4557e1c4e1a0535 upstream. tsc can be NULL (mac80211 currently always passes NULL), resulting in NULL-dereference. check before copying it. Signed-off-by: Eliad Peller Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman --- net/wireless/trace.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/wireless/trace.h +++ b/net/wireless/trace.h @@ -1972,7 +1972,8 @@ TRACE_EVENT(cfg80211_michael_mic_failure MAC_ASSIGN(addr, addr); __entry->key_type = key_type; __entry->key_id = key_id; - memcpy(__entry->tsc, tsc, 6); + if (tsc) + memcpy(__entry->tsc, tsc, 6); ), TP_printk(NETDEV_PR_FMT ", " MAC_PR_FMT ", key type: %d, key id: %d, tsc: %pm", NETDEV_PR_ARG, MAC_PR_ARG(addr), __entry->key_type,