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 6CC29C0015E for ; Fri, 21 Jul 2023 19:26:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232285AbjGUT0B (ORCPT ); Fri, 21 Jul 2023 15:26:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232251AbjGUTZ4 (ORCPT ); Fri, 21 Jul 2023 15:25:56 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD2392D47 for ; Fri, 21 Jul 2023 12:25:55 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4CA5E61D54 for ; Fri, 21 Jul 2023 19:25:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D793C433D9; Fri, 21 Jul 2023 19:25:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689967554; bh=SLVMyE0WW45pIT1xpGg8NavF7sD3ELJS4bM28l8AHhs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t4bdxgxliffyyXaAxXmzOmfkHzgSJhBP14t86LMRXXzun1uN8JrkynmFFLeBlCEjg o6U08LJFaqr9DVsAGC+HS+Ciw+mxhoTXb/TINtYwIn2CI9vy9kerD4QVlWn0znX3Cx DouYa22H+Evd7EjE+IxqLDo2o3K9JBk98nvW4EHc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nathan Chancellor , CKI , Ulrich Weigand , Heiko Carstens , Alexander Gordeev Subject: [PATCH 6.1 174/223] s390/decompressor: fix misaligned symbol build error Date: Fri, 21 Jul 2023 18:07:07 +0200 Message-ID: <20230721160528.295780494@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230721160520.865493356@linuxfoundation.org> References: <20230721160520.865493356@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Heiko Carstens commit 938f0c35d7d93a822ab9c9728e3205e8e57409d0 upstream. Nathan Chancellor reported a kernel build error on Fedora 39: $ clang --version | head -1 clang version 16.0.5 (Fedora 16.0.5-1.fc39) $ s390x-linux-gnu-ld --version | head -1 GNU ld version 2.40-1.fc39 $ make -skj"$(nproc)" ARCH=s390 CC=clang CROSS_COMPILE=s390x-linux-gnu- olddefconfig all s390x-linux-gnu-ld: arch/s390/boot/startup.o(.text+0x5b4): misaligned symbol `_decompressor_end' (0x35b0f) for relocation R_390_PC32DBL make[3]: *** [.../arch/s390/boot/Makefile:78: arch/s390/boot/vmlinux] Error 1 It turned out that the problem with misaligned symbols on s390 was fixed with commit 80ddf5ce1c92 ("s390: always build relocatable kernel") for the kernel image, but did not take into account that the decompressor uses its own set of CFLAGS, which come without -fPIE. Add the -fPIE flag also to the decompresser CFLAGS to fix this. Reported-by: Nathan Chancellor Tested-by: Nathan Chancellor Reported-by: CKI Suggested-by: Ulrich Weigand Link: https://github.com/ClangBuiltLinux/linux/issues/1747 Link: https://lore.kernel.org/32935.123062114500601371@us-mta-9.us.mimecast.lan/ Link: https://lore.kernel.org/r/20230622125508.1068457-1-hca@linux.ibm.com Cc: Signed-off-by: Heiko Carstens Signed-off-by: Alexander Gordeev Signed-off-by: Greg Kroah-Hartman --- arch/s390/Makefile | 1 + 1 file changed, 1 insertion(+) --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -27,6 +27,7 @@ KBUILD_CFLAGS_DECOMPRESSOR += -fno-delet KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector +KBUILD_CFLAGS_DECOMPRESSOR += -fPIE KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,))