From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1182439-1521807423-2-4064748929010803375 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521807422; b=h8iWJ8XGbwffTMXsfSfyFd+5ZchukGnatGfmfNrz6rN2rOy V02IZXIm62CBl5DcCsUO3Otgq0AutFDS6TT94Wvt+EHfj3w34FrvVaTdgloXbYGe SA2J5FjxhVlAazvGrD+NwLUxHfyU8UMaMhuRWrwdlWDEB4zkTcDRQFANPQsdHZ+M w5/hGzEtyGRs2uyaFRAocrO6ALJXSb0fPzbF+IlZPwofmhl59Ltw+5EBN7TsxAJL V9NodwkJj9qsutL7gsnD4MiXXyhKdSsikWGh5/ugjCHDPfbFO4YyQ+ZLE+ys5sEg BEw1Dxzm5HQs70QvyqErcy8mgmoYuJ6wC2eLNaQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521807422; bh=wBmI7nt8gpYUqewPBWYm9DnUli R2tVdPjw7MA+dx+o4=; b=MVeNnvgdH4Rn5Y0JBmJmU2uDF96WbQAQbIUAhZebk8 RrAh2M6CgoQzPYBiDdF6FMRTh6ctZgzLlKZ7SVTj/xDaEOtXXIgHL8C5M/UsLKmm Jaw7T/M9eGWDX7oQjM26zK5rhUwLpjagQ0ZcrzTLCj2SO3nLbUS48x54wKADGy/k ypSaRxDey/QGaKPMgYMdsKOC8mdRnGwm6ie4/6ermevosk+TfHTw4j251IM4W4Bc EY5g9UhmtwbxqmCYhyOhWiyeOHYygs7nEgSory8lncBy2HCB8Tr2AmYs2s6Wpz1D SDFYh6QaYYUzZc7OJBgZsYSoTVYPdRuJGgoV423DttZA== ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752305AbeCWJ42 (ORCPT ); Fri, 23 Mar 2018 05:56:28 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:33968 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752232AbeCWJ40 (ORCPT ); Fri, 23 Mar 2018 05:56:26 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Loic Poulain , Marcel Holtmann , Sasha Levin Subject: [PATCH 4.15 05/84] Bluetooth: btqcomsmd: Fix skb double free corruption Date: Fri, 23 Mar 2018 10:53:19 +0100 Message-Id: <20180323095412.729878479@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323095411.913234798@linuxfoundation.org> References: <20180323095411.913234798@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Loic Poulain [ Upstream commit 67b8fbead4685b36d290a0ef91c6ddffc4920ec9 ] In case of hci send frame failure, skb is still owned by the caller (hci_core) and then should not be freed. This fixes crash on dragonboard-410c when sending SCO packet. skb is freed by both btqcomsmd and hci_core. Fixes: 1511cc750c3d ("Bluetooth: Introduce Qualcomm WCNSS SMD based HCI driver") Signed-off-by: Loic Poulain Signed-off-by: Marcel Holtmann Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btqcomsmd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/bluetooth/btqcomsmd.c +++ b/drivers/bluetooth/btqcomsmd.c @@ -88,7 +88,8 @@ static int btqcomsmd_send(struct hci_dev break; } - kfree_skb(skb); + if (!ret) + kfree_skb(skb); return ret; }