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 4F1CB3E63B0; Mon, 17 Aug 2026 15:29:10 +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=1786980551; cv=none; b=JDkgUKnU7DdaBzv7rudcOxJMujQGnfT5vyuETjBM5vxsC+azHfvtarhCwnT6LNZLGOYPBoGuLr3NPaBZz0dc5831Sgve9hLalZUaKkbQG3qtdlfzM8zECzkRMgEzNX8BLuG5bOA6tyaYq9Lh+tvZAtnN0xCsCnVGqaRGPfQ+Gcc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786980551; c=relaxed/simple; bh=NCGeiGXH137Crf4QHGR510V1phjnzL/V7feS0ZnwkHo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=twYC3sYn2EFAGA1yz0x0Ixm2IlNEk0/tMvP/81XDhEgc2nvz56VH2bl1MyStOX/BmCBH2T5owQ2OSMIHBeYNVi+JlimJc8mMOlldQzsNkRk1FcsHoNP6IcVoLgxDhooH0BazJbZcAdjkAjyEYoQ+d3BxuGvjwcmrzJEE5RQmAP8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=uIuk7ffy; 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="uIuk7ffy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AAAFB1F00A3A; Mon, 17 Aug 2026 15:29:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786980550; bh=0AyZeKmpMsRNXR3l6aFwfSYoPSv9o/aqn2HA8ht63t4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=uIuk7ffywC5oOBh0Tx0TEnU0w9WZ9179hJI0wUxq2nZKN6FDz0YJRLRFjKXPsnrS6 fgDQ/asW1tsbOdNSfx2bPSNqYAQDGYMui6LwSWmj0Fq7miB8V2ACZDf2um23gtKkwF IAGaW1DVsouVR+wNnuvIOMBodB9kBFHW0EsBLAUw= 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 6.1 574/609] misc: fastrpc: fix channel ctx ref leak when session alloc fails Date: Mon, 17 Aug 2026 15:34:30 +0200 Message-ID: <20260817132602.928276153@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132543.039278408@linuxfoundation.org> References: <20260817132543.039278408@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 6.1-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 @@ -1448,7 +1448,7 @@ 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; }