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Miller" Cc: Martin Sebor , Arnd Bergmann , stable@vger.kernel.org, Luca Coelho , =?UTF-8?q?Peter=20Gro=C3=9Fe?= , Simon Wunderlich , Benjamin Berg , Mohammed Shafi Shajakhan , Andrew Zaborowski , Arend Van Spriel , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] cfg80211: fix cfg80211_beacon_dup Date: Fri, 2 Feb 2018 16:31:23 +0100 Message-Id: <20180202153142.1142229-1-arnd@arndb.de> X-Mailer: git-send-email 2.9.0 X-Provags-ID: V03:K0:tnic2nJf0NeoKdNqdegbp7zo8c4ktPewtt6EsbfX1YlNj1gA8/4 PCg2eI9ItUE/gEuy6CELuTPuH/b58kuXJ2Qo7R6goliPkwACqaQk+JgE9633DS5/wRjY9dz BKyedxaetNuUE9OP1OpvlW7n7+0b0AP7A+WjwZji+2EmE4fT2sT/6+XamWYj8QBhw4GtXa0 55YaERMqigVaf9bHMYIUg== X-UI-Out-Filterresults: notjunk:1;V01:K0:uQyaJNquCPM=:ndWLOFh3M+6xCn6X7G+RGd tWqRFRQNRZoZLJPPu156up6pj9s32qM7vlg6WxiFE0HM/h71cZqyUIJduXoXkLljB7uuoAKNT i9gTqu9kQw/R3PyaYToeNjOYiMLkAhwIAkYUanqItqpJHB//lB0k7R6hp4LrvOt+TzTQBPWYz KIGMVAv4kbacliH8JXFMRbBB/Pvtb1RAM3bSf9RHOtykhWR9CNHusDJ/xMn89kNNPGPwFcaEk /44fDe7ZUUTw5bNOOaKEMkXg40oKjSPE1CBAeO3yIs0C1d3w1ib5JICeya4A3Zaw4j0Ry4O/l Bep8mJ6XkJEEuCvX+4crDanPDv7GhIQSJusjuIfH1NfQPoIS4Z9RXOpE9s9oXeMRzsGOx+Jam Jk7yUemMLQ4fs+zGR9U288kxaXcp25jKh8KM368aiYQgKDARCTDdMGhYmzQ31ne3VgcYkIjoB 3spTnJP+uccwiSChxhzaADP90836Dvh0fBBT+FxUDxj3rzy0WTc/ynypiE3CqMw3u7X7NTTv0 0FQ+9kNetr2MaUWNXzGsmhxBJKArS3gv11Ag93Ibbt5lYfqJnHKx3SmaLJ/zO8zAJ2yQuYpF7 gl5EWUrssBfKoE8vBBjTcoqbhugIhJY/EtRisdTBx2d8ZA2ypf8mgjdlmnkV9YXVH/BXtzAEF j98aujK6ll9JcLLqGZkOyn5pkxWMDO4c5o1fy2h4Bo0Qu9uDAbQopKuNnXiv7Z49oKo8Xp8on EAcuEBn9GW2i3Me5APGjekLSyGaCB4YR7nCgEw== Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: gcc-8 warns about some obviously incorrect code: net/mac80211/cfg.c: In function 'cfg80211_beacon_dup': net/mac80211/cfg.c:2896:3: error: 'memcpy' source argument is the same as destination [-Werror=restrict] >>From the context, I conclude that we want to copy from beacon into new_beacon, as we do in the rest of the function. Cc: stable@vger.kernel.org Fixes: 73da7d5bab79 ("mac80211: add channel switch command and beacon callbacks") Signed-off-by: Arnd Bergmann --- net/mac80211/cfg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 46028e12e216..f4195a0f0279 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2892,7 +2892,7 @@ cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) } if (beacon->probe_resp_len) { new_beacon->probe_resp_len = beacon->probe_resp_len; - beacon->probe_resp = pos; + new_beacon->probe_resp = pos; memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); pos += beacon->probe_resp_len; } -- 2.9.0