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 DA1E5C74A44 for ; Fri, 10 Mar 2023 14:22:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232251AbjCJOWM (ORCPT ); Fri, 10 Mar 2023 09:22:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232146AbjCJOVz (ORCPT ); Fri, 10 Mar 2023 09:21:55 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DD2A7DF95 for ; Fri, 10 Mar 2023 06:20:40 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id 38167B822BA for ; Fri, 10 Mar 2023 14:20:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 808C2C433EF; Fri, 10 Mar 2023 14:20:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678458037; bh=7er0dUp6f2qUVvBIVDM9ra233QsI6nY3wyGM8TYPjHA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jxp2Fbza5BFGvFsAWYhqvLXp1uJeR9AOjLkaoOVjPi71GcTYymPgDLz65FWdZPpyj L5diDUeic1sF5Po0AqUnUC2C2SCbRy0SspGOZZCXNYquBSIVtNPgd229sMvySqi1sX DXkjxvXMEOAKY8zl1spzI9Pia8/ta/TU1BuUVeEU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ilya Leoshkevich , Heiko Carstens Subject: [PATCH 4.19 142/252] s390: discard .interp section Date: Fri, 10 Mar 2023 14:38:32 +0100 Message-Id: <20230310133723.093502108@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310133718.803482157@linuxfoundation.org> References: <20230310133718.803482157@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: Ilya Leoshkevich commit e9c9cb90e76ffaabcc7ca8f275d9e82195fd6367 upstream. When debugging vmlinux with QEMU + GDB, the following GDB error may occur: (gdb) c Continuing. Warning: Cannot insert breakpoint -1. Cannot access memory at address 0xffffffffffff95c0 Command aborted. (gdb) The reason is that, when .interp section is present, GDB tries to locate the file specified in it in memory and put a number of breakpoints there (see enable_break() function in gdb/solib-svr4.c). Sometimes GDB finds a bogus location that matches its heuristics, fails to set a breakpoint and stops. This makes further debugging impossible. The .interp section contains misleading information anyway (vmlinux does not need ld.so), so fix by discarding it. Signed-off-by: Ilya Leoshkevich Cc: Signed-off-by: Heiko Carstens Signed-off-by: Greg Kroah-Hartman --- arch/s390/kernel/vmlinux.lds.S | 1 + 1 file changed, 1 insertion(+) --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -153,5 +153,6 @@ SECTIONS DISCARDS /DISCARD/ : { *(.eh_frame) + *(.interp) } }