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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0039EC7619A for ; Thu, 23 Mar 2023 01:34:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230366AbjCWBeQ (ORCPT ); Wed, 22 Mar 2023 21:34:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35360 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230373AbjCWBdk (ORCPT ); Wed, 22 Mar 2023 21:33:40 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB1DCF96A; Wed, 22 Mar 2023 18:33:23 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id EF9EB6237A; Thu, 23 Mar 2023 01:32:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 526F3C4339B; Thu, 23 Mar 2023 01:32:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1679535146; bh=Pd1C5xaY7UY7S22n5vfJNMV9rxIvltzK9P/7AyH0PYQ=; h=Date:To:From:Subject:From; b=m4eW9EuQijhbOFxWpRp0CYkqjEJQehSn+gkHqdr6pY/qjCBmn19tb2Hx+6y4Ckzoa vNF2v67D4I665g6djMPDlTpS+HRJW0e0/dw7cjVcjGnVBVf8pBkqNTzpj3plqklgRV 1fB+4RxXoJbnfaTQzr6k5fxG9g8nBb+MIG+cTzSc= Date: Wed, 22 Mar 2023 18:32:25 -0700 To: mm-commits@vger.kernel.org, stable@vger.kernel.org, nathan@kernel.org, glider@google.com, dvyukov@google.com, elver@google.com, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-hotfixes-stable] kfence-avoid-passing-g-for-test.patch removed from -mm tree Message-Id: <20230323013226.526F3C4339B@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: kfence: avoid passing -g for test has been removed from the -mm tree. Its filename was kfence-avoid-passing-g-for-test.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Marco Elver Subject: kfence: avoid passing -g for test Date: Thu, 16 Mar 2023 23:47:04 +0100 Nathan reported that when building with GNU as and a version of clang that defaults to DWARF5: $ make -skj"$(nproc)" ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- \ LLVM=1 LLVM_IAS=0 O=build \ mrproper allmodconfig mm/kfence/kfence_test.o /tmp/kfence_test-08a0a0.s: Assembler messages: /tmp/kfence_test-08a0a0.s:14627: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14628: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14632: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14633: Error: non-constant .uleb128 is not supported /tmp/kfence_test-08a0a0.s:14639: Error: non-constant .uleb128 is not supported ... This is because `-g` defaults to the compiler debug info default. If the assembler does not support some of the directives used, the above errors occur. To fix, remove the explicit passing of `-g`. All the test wants is that stack traces print valid function names, and debug info is not required for that. (I currently cannot recall why I added the explicit `-g`.) Link: https://lkml.kernel.org/r/20230316224705.709984-1-elver@google.com Fixes: bc8fbc5f305a ("kfence: add test suite") Signed-off-by: Marco Elver Reported-by: Nathan Chancellor Cc: Alexander Potapenko Cc: Dmitry Vyukov Cc: Signed-off-by: Andrew Morton --- --- a/mm/kfence/Makefile~kfence-avoid-passing-g-for-test +++ a/mm/kfence/Makefile @@ -2,5 +2,5 @@ obj-y := core.o report.o -CFLAGS_kfence_test.o := -g -fno-omit-frame-pointer -fno-optimize-sibling-calls +CFLAGS_kfence_test.o := -fno-omit-frame-pointer -fno-optimize-sibling-calls obj-$(CONFIG_KFENCE_KUNIT_TEST) += kfence_test.o _ Patches currently in -mm which might be from elver@google.com are