From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2E2F436084 for ; Fri, 5 Jan 2024 19:33:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="m4BKwmiU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F49CC433C7; Fri, 5 Jan 2024 19:33:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1704483205; bh=h8JZfTOvJXYFjB212d6Sl3dlIEwLqh/QPppKUUOi5E0=; h=Date:To:From:Subject:From; b=m4BKwmiUskcrwEZiwT52gOn9ai+PneZs9mB5ZctmCKtekjluxhBLYCnS1lUtnrvqV XHSwEdMXqzJDxriE/SnxzPXrZQ30Lppk+t0ndmqs7yVJ6Y9g7r/hEmEAPRecSrVe3z VW2KGMpkAx72XRzlEpA8kZtigdetEMuLlHTjXMJM= Date: Fri, 05 Jan 2024 11:33:24 -0800 To: mm-commits@vger.kernel.org,ndesaulniers@google.com,lkp@intel.com,bcain@quicinc.com,acme@kernel.org,nathan@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + lib-kconfigdebug-disable-config_debug_info_btf-for-hexagon.patch added to mm-nonmm-unstable branch Message-Id: <20240105193325.7F49CC433C7@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: lib/Kconfig.debug: disable CONFIG_DEBUG_INFO_BTF for Hexagon has been added to the -mm mm-nonmm-unstable branch. Its filename is lib-kconfigdebug-disable-config_debug_info_btf-for-hexagon.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-kconfigdebug-disable-config_debug_info_btf-for-hexagon.patch This patch will later appear in the mm-nonmm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Nathan Chancellor Subject: lib/Kconfig.debug: disable CONFIG_DEBUG_INFO_BTF for Hexagon Date: Fri, 05 Jan 2024 12:13:04 -0700 pahole, which generates BTF, relies on elfutils to process DWARF debug info. Because kernel modules are relocatable files, elfutils needs to resolve relocations when processing the DWARF .debug sections. Hexagon is not supported in binutils or elfutils, so elfutils is unable to process relocations in kernel modules, causing pahole to crash during BTF generation. Do not allow CONFIG_DEBUG_INFO_BTF to be selected for Hexagon until it is supported in elfutils, so that there are no more cryptic build failures during BTF generation. Link: https://lkml.kernel.org/r/20240105-hexagon-disable-btf-v1-1-ddab073e7f74@kernel.org Signed-off-by: Nathan Chancellor Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202312192107.wMIKiZWw-lkp@intel.com/ Suggested-by: Nick Desaulniers Acked-by: Brian Cain Cc: Arnaldo Carvalho de Melo Signed-off-by: Andrew Morton --- lib/Kconfig.debug | 2 ++ 1 file changed, 2 insertions(+) --- a/lib/Kconfig.debug~lib-kconfigdebug-disable-config_debug_info_btf-for-hexagon +++ a/lib/Kconfig.debug @@ -378,6 +378,8 @@ config DEBUG_INFO_BTF depends on !GCC_PLUGIN_RANDSTRUCT || COMPILE_TEST depends on BPF_SYSCALL depends on !DEBUG_INFO_DWARF5 || PAHOLE_VERSION >= 121 + # pahole uses elfutils, which does not have support for Hexagon relocations + depends on !HEXAGON help Generate deduplicated BTF type information from DWARF debug info. Turning this on expects presence of pahole tool, which will convert _ Patches currently in -mm which might be from nathan@kernel.org are lib-kconfigdebug-disable-config_debug_info_btf-for-hexagon.patch