From patchwork Wed Dec 16 13:26:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Dasmohapatra X-Patchwork-Id: 41447 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 29B93383E802; Wed, 16 Dec 2020 13:27:53 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 29B93383E802 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1608125273; bh=/lARSfm/TLLkmmQFJbn2WgFiMNrrsDgWQLVd0Il0WwY=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=GACAxF712gGYWj0AUgwq/syG+A9G+CE3MQIUhLBtrw1HTAtQnKlEqy0jzqiMq3TGB dnlvVH/VzotdyAJB0ByuMphqs7TrROIh0angfDmNuIR42a5n+SESkOD/IMdZ0+Ub3t z+jBbLVGEspXCmwLRzCEMN/Y721rzr75+Pa3BY/Y= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by sourceware.org (Postfix) with ESMTPS id 5A51E3840C21 for ; Wed, 16 Dec 2020 13:27:48 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 5A51E3840C21 Received: from noise.cbg.collabora.co.uk (unknown [IPv6:2001:4d48:ad5c:ef00:8e70:5aff:fe59:c29c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vivek) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id B96C81F45680 for ; Wed, 16 Dec 2020 13:27:42 +0000 (GMT) To: libc-alpha Subject: [RFC][PATCH v7 08/20] elf/dl-open.c: when creating a proxy check the libc_map in NS 0 Date: Wed, 16 Dec 2020 13:26:38 +0000 Message-Id: <20201216132650.22949-9-vivek@collabora.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201216132650.22949-1-vivek@collabora.com> References: <20201216132650.22949-1-vivek@collabora.com> MIME-Version: 1.0 X-Spam-Status: No, score=-13.2 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, KAM_NUMSUBJECT, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: =?utf-8?q?Vivek_Das=C2=A0Mohapatra_via_Libc-alpha?= From: Vivek Dasmohapatra Reply-To: =?utf-8?q?Vivek_Das=C2=A0Mohapatra?= Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" The libc_already_loaded check normally considers the libc_map entry in GL(dl_ns)[args->nsid].libc_map. This is not correct for proxies, which use the libc_map from the default namespace (as proxies are dummy entries that point to the base namespace via their l_real members). --- elf/dl-open.c | 1 + 1 file changed, 1 insertion(+) diff --git a/elf/dl-open.c b/elf/dl-open.c index a995e9086f..02e094a867 100644 --- a/elf/dl-open.c +++ b/elf/dl-open.c @@ -568,6 +568,7 @@ dl_open_worker (void *a) { proxy_ns = args->nsid; args->nsid = LM_ID_BASE; + args->libc_already_loaded = GL(dl_ns)[LM_ID_BASE].libc_map != NULL; } /* It was already open. */