From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 364E24B0481; Mon, 17 Aug 2026 14:42:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786977740; cv=none; b=NG3Q0FXls5o1q+uNi96Y7hJVYyoRe/K8egUA8L3SbKz/xMr9Q0QQwvp0yK/ULe7As7XsZQUd3lApLFHceW9KrKJ6NxIpfg8aoaUfnPyrzaduYsCWWelJZW9UO5TZHtA8rZKRr38d4CAHvt0FbF0Ccmh/0iznDFYnm4taslSP46U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786977740; c=relaxed/simple; bh=MwjIxzePuZEfuemybLhQcAOm6/qPi2ZZYzc6b4HIBfA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pQE/y1/QGwAXZVYg8XniWNYDpmWIEQHdlti56HmHaMeRGoVtg6uHd34pZvID9kt8Yhr8lVAHcBv5YGOazhpIaBR3PMv9LvuTNHQw+MoWz8PyZp42s2F6blsyPSW9fAPoq3Bq99SJtU6E1ZCiAX5fJ7kP8qc8bvWzoL7NTcti/n0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QHgo7XiE; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="QHgo7XiE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F4BB1F000E9; Mon, 17 Aug 2026 14:42:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786977739; bh=mfyZQzdI6+QJ1/Z7DXNiMVdl3CYdMjCVRMuO5htHT50=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=QHgo7XiEiCOp9CyuahSsgJfLuTbUjyTe6oMqNoE5RNS8yMUpTkzUuK9xH4uvdiShA t+AvhhQI87RN0CtPlM96JiIs+JIxuHRcWisFt11xuA/p8DH322KjYeBroW+LDqLfGx cVuSLdabM9QLmfVDAk3u3X7ZnHvWfz0nG0TXdu3k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable@kernel.org, Anandu Krishnan E , Dmitry Baryshkov , Srinivas Kandagatla Subject: [PATCH 5.15 432/456] misc: fastrpc: fix channel ctx ref leak when session alloc fails Date: Mon, 17 Aug 2026 15:33:42 +0200 Message-ID: <20260817132556.030676937@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132539.792407575@linuxfoundation.org> References: <20260817132539.792407575@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Anandu Krishnan E commit 310f7868399668c6d99d88acc9c4cf3462e69d5b upstream. fastrpc_channel_ctx_get() is called in fastrpc_device_open() before fastrpc_session_alloc(). If session alloc fails, the error path returns -EBUSY without calling fastrpc_channel_ctx_put(), leaking the reference. Fix by adding the missing put. Fixes: 278d56f970ae ("misc: fastrpc: Reference count channel context") Cc: stable@kernel.org Signed-off-by: Anandu Krishnan E Reviewed-by: Dmitry Baryshkov Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260724223342.629168-5-srini@kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman --- drivers/misc/fastrpc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -1275,7 +1275,7 @@ static int fastrpc_device_open(struct in dev_err(&cctx->rpdev->dev, "No session available\n"); mutex_destroy(&fl->mutex); kfree(fl); - + fastrpc_channel_ctx_put(cctx); return -EBUSY; }