From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BD8BDC433FF for ; Tue, 6 Aug 2019 21:43:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8B2812189E for ; Tue, 6 Aug 2019 21:43:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565127807; bh=BA+UGscKPxuHl3GcdkS7m3JOxOxCmTFTvrCrso1YyF4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=YEHHEvXISMh9YPF9HGW2mCId1JhpeJwxUJchvlQZ7AH7AOc7JYVHhMuQyhaTpVs6R s4GQllnw1Q/RUuvmrtPNG+K5sWSeqhzwLVG54psLQUI9AdYPHWWGlwwCHGK8GT6jnG d+NFcF5HtXe5ByPDJPhunGPtQ6Fk36WKg09RslFQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727793AbfHFVeh (ORCPT ); Tue, 6 Aug 2019 17:34:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:52394 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727779AbfHFVee (ORCPT ); Tue, 6 Aug 2019 17:34:34 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E00472186A; Tue, 6 Aug 2019 21:34:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565127273; bh=BA+UGscKPxuHl3GcdkS7m3JOxOxCmTFTvrCrso1YyF4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WOH2o4JDkeT5aoSs9KFR8S9XHuUmM3HGCoHFjFeTGf1f8GD8ehcu6/7qxEZN8LcL8 IKXF9VdGmhZCFzGcY4/wNiCATSTIQXflaCji6G0TPhAGXWrhuBiV0TdyV9VQbEkEgL RDrC3fXcqTAzU+l8Ai6p48opgkk2bTEUkTlaxuU0= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mao Han , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sasha Levin , linux-riscv@lists.infradead.org Subject: [PATCH AUTOSEL 5.2 38/59] riscv: Fix perf record without libelf support Date: Tue, 6 Aug 2019 17:32:58 -0400 Message-Id: <20190806213319.19203-38-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190806213319.19203-1-sashal@kernel.org> References: <20190806213319.19203-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mao Han [ Upstream commit b399abe7c21e248dc6224cadc9a378a2beb10cfd ] This patch fix following perf record error by linking vdso.so with build id. perf.data perf.data.old [ perf record: Woken up 1 times to write data ] free(): double free detected in tcache 2 Aborted perf record use filename__read_build_id(util/symbol-minimal.c) to get build id when libelf is not supported. When vdso.so is linked without build id, the section size of PT_NOTE will be zero, buf size will realloc to zero and cause memory corruption. Signed-off-by: Mao Han Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Signed-off-by: Paul Walmsley Signed-off-by: Sasha Levin --- arch/riscv/kernel/vdso/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile index f1d6ffe43e428..49a5852fd07dd 100644 --- a/arch/riscv/kernel/vdso/Makefile +++ b/arch/riscv/kernel/vdso/Makefile @@ -37,7 +37,7 @@ $(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE # these symbols in the kernel code rather than hand-coded addresses. SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \ - -Wl,--hash-style=both + -Wl,--build-id -Wl,--hash-style=both $(obj)/vdso-dummy.o: $(src)/vdso.lds $(obj)/rt_sigreturn.o FORCE $(call if_changed,vdsold) -- 2.20.1