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 511F84418CB; Mon, 17 Aug 2026 14:49:40 +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=1786978182; cv=none; b=VX3APYBGKu3XvFghLe1Z+QSCPnVu4hysLKzjpsxNI6DfjqQ/PttZpLf9iQRDIV2JZSqZcIXmDQg0ux9gyxUhyWiu3gLowyiIa4IPsJB1geUBP4tpcerrRCIPtrScQxGLhuFiibr5wRy7I+q97F665y+ZWyObpWcgDOCb81ODKOg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786978182; c=relaxed/simple; bh=SWxh6xw2GSmnbcVROP6DxE4WZmuIJvdQBqk1QlnF4KY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W4gRDA8WLnZmf1ibJz49XCjLMakuTPEukM2dsKK45APQ9rnrVNm1+Fs+ut8cbYsBUGoXRN6Th+wFyT8HjZ8kAdIjlMLPgGFyIToFM4uQ7lS4VCqALdrhzTjAO8O2PFk7hIm3aW4nCS82V7XL3VIoIIVSuNgVSm7L8fVuLgJrz28= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2Xk4mlwA; 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="2Xk4mlwA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D3E91F000E9; Mon, 17 Aug 2026 14:49:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786978179; bh=twJqOalebkNoGZTP+NMw2xR4S8ixCNv4DSCkxbDHyG4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=2Xk4mlwAdGXhNQOECXj5QV7BB6/DkFbtTVMeZFzQJnTmrlw30eOu3/JYgRktkYTXQ JgiTumrG78+WL+EagdfiWhgr51beHoaqdIKs/0fNK4yDW3/m1mR/x0+imVsq0VSaJp BK9j5AJYwQwOyNoSiJCnQP3enp72BHISIIpA/K+w= 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 6.12 130/181] misc: fastrpc: fix channel ctx ref leak when session alloc fails Date: Mon, 17 Aug 2026 15:33:44 +0200 Message-ID: <20260817132540.715961707@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132535.394764707@linuxfoundation.org> References: <20260817132535.394764707@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-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 @@ -1643,7 +1643,7 @@ 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; }