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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 45D61CCD185 for ; Mon, 13 Oct 2025 07:27:30 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4clTSw5dfNz2yrT; Mon, 13 Oct 2025 18:27:28 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=148.163.156.1 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1760340448; cv=none; b=VWp1JcXG5shVojQOqRAebi+lBOTBdC9o1Xfzj3ZMKTyQGE2qBbSXCWkWKzXmIJpNJHHqH5L0hcZZVazlDs3UNbqUJ74e29cpjweVnen5H3/AZ/mfwBuZ34zpDjUcci8yOOTM9gED6UTjpWKIaPByJZFPlsS+Z5BD/DqL4BZ7zDT6P19ixd9L1ytaj5WKCFMB2SVnHPu1ptl1NIlfs0yG5/oaVLlmn41AxGhiQoXT9Irua+GrTPTMLN0jRGWR8pUAYGmPfLQ4sLWLs0d8CRC2exQ4TsFv8LTIMxn+ObL+ruedJLG+UjowZV3Ezy9Gd58H6XWAxognmoczAV+u0UAHKA== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1760340448; c=relaxed/relaxed; bh=bTiF+BWsP+sAuwRYEFqVZgkw/cidH8/ZLJVrg0nDFQo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=gLqRuwR18OA7NZHqk+Yi5G7E3KUnlsDjPNFcrTTOtHlKdHrWjwdVVJusCxDHkiulBfYC45T/lQG+hBX/zPYS+sDhsRS70vzyigH15dUu5rgX130D99oZvLKPvimGgPrmFeMAzJEqbbJ6Lu1PeyXXH4ruSaSqFFcD9Cl/Jj7FcxJK0LO+R35gz6ofN1IwpMj80FmSdgHXroN+EeQZtwuI2W7xRB6ee2Uc06teHvxgCmlEOg9UYtFAI17tnEkoVFLd/bOyJ1BPL+q+m3CG/noOn9KU13jjgT5B+aJkAhxpmKzp0njDk8vzH5QZxELcfODpfMeEFtUzHrt0J3+zgqaFgA== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=CktaWn0j; dkim-atps=neutral; spf=pass (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=vishalc@linux.ibm.com; receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=CktaWn0j; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=vishalc@linux.ibm.com; receiver=lists.ozlabs.org) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4clTSv5khtz2xQ0 for ; Mon, 13 Oct 2025 18:27:27 +1100 (AEDT) Received: from pps.filterd (m0356517.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 59D1H0mg016744; Mon, 13 Oct 2025 07:27:11 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=bTiF+B WsP+sAuwRYEFqVZgkw/cidH8/ZLJVrg0nDFQo=; b=CktaWn0jx6la+uEI8TTx9e MUjU+gy66aapApShNo6+p+tXGn4lsfqNzFUOAtmHwwYViQVM5rCL72TrJu6xP9bs duiFsnKeAu4FqkyaHZPD/KZqGeBJSm+T6F5y6WFXQ4kNLDdDvPGMiozkKp2uKupg x4E0efOkoabB2a7SxL2oBNfmFSAT/RaSRVvfVHk7EFS03Ms4BeFXlw5kvgIQ/3V0 GJVQ2dVrkkNgVDfHhu8pDw0kKmsjJmEJzIHf8EVuazTXVR8fN0vAndBrlb+N/a4G PgktbKeEAAV5EAs+GF7IMWquMg5fd1rSKUOsa8nhYaf8td2pk4u3TifCn+IekODw == Received: from ppma23.wdc07v.mail.ibm.com (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 49qey8fjkx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 13 Oct 2025 07:27:11 +0000 (GMT) Received: from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1]) by ppma23.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 59D6R46d016705; Mon, 13 Oct 2025 07:27:10 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 49r32jmk0h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 13 Oct 2025 07:27:10 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 59D7R8ZP54723032 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 13 Oct 2025 07:27:08 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6005620074; Mon, 13 Oct 2025 07:27:07 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6A9662006E; Mon, 13 Oct 2025 07:27:05 +0000 (GMT) Received: from linux.ibm.com (unknown [9.39.21.93]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 13 Oct 2025 07:27:05 +0000 (GMT) Date: Mon, 13 Oct 2025 12:57:00 +0530 From: Vishal Chourasia To: Christophe Leroy Cc: maddy@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, "llvm@lists.linux.dev" , Nathan Chancellor Subject: Re: [PATCH] arch/powerpc: Remove .interp section in vmlinux Message-ID: References: <20251013040148.560439-1-vishalc@linux.ibm.com> <2b4a3215-1620-40c9-a00c-ca833ebbb7b6@csgroup.eu> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <2b4a3215-1620-40c9-a00c-ca833ebbb7b6@csgroup.eu> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: Bp2bZu6f2BQTPTG9kZ1gxrm11KIT41L7 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMDExMDAxMSBTYWx0ZWRfX8vblzQT9rLVU 7mdtFcJ4Dx4yJkBKI564BPd1idWly6W/VdNzzylF/RLy1OPPrLggdD+vVaxC4H9625dUJonK41d BWkUAjmNV1pm9kTXzMx+sHYKWg5gWtljrDeVCHtKRg+Yy+h19gOfVf5jsOOr5I2qSCwcvFzEszk 61w/aV4MPaugCS923hzffW9Dpvt3itGElkHKWzvvzOfzF1pAUBOnTXePJo8WlM4QoE8TnwbB7nx Q6OW/w12EjKWUdlGWi4lk2XLKxNDUiO5d09HKfNWKr3AMsmPYYoNg6y+qXq2DV4BySKCL7qGmMz /AxJpddzhwIKP60h4nivBJUPdLUmS600+WogX2ZEljWi7ID8GaTnNAkafYw+FKDL41vEd2pPzso 7AcI6uK6kkMRplOhngvceTIaWu25pg== X-Proofpoint-GUID: Bp2bZu6f2BQTPTG9kZ1gxrm11KIT41L7 X-Authority-Analysis: v=2.4 cv=QZ5rf8bv c=1 sm=1 tr=0 ts=68eca9cf cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=x6icFKpwvdMA:10 a=NEAV23lmAAAA:8 a=CCpqsmhAAAAA:8 a=-ktxzAwryNFT6qpDX-UA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=ul9cdbp4aOFLsgKbc677:22 a=cPQSjfK2_nFv0Q5t_7PE:22 a=HhbK4dLum7pmb74im6QT:22 a=pHzHmUro8NiASowvMSCR:22 a=Ew2E2A-JSTLzCXPT_086:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-10-13_03,2025-10-06_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 bulkscore=0 suspectscore=0 spamscore=0 malwarescore=0 impostorscore=0 clxscore=1011 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510020000 definitions=main-2510110011 On Mon, Oct 13, 2025 at 08:46:48AM +0200, Christophe Leroy wrote: > +CLANG ppl > > Hi, > > Le 13/10/2025 à 06:01, Vishal Chourasia a écrit : > > While debugging a ppc64le QEMU guest on an x86_64 host, I observed GDB crashes > > when attempting to attach to the remote target: > > > > (gdb) target remote :1234 > > > > Investigation revealed that cross-compiling the Linux kernel for ppc64le on an > > x86_64 host using Clang produces a vmlinux binary containing an empty .interp > > section. This empty .interp section is responsible for the GDB crashes. > > Which version of CLANG is it ? (i) ❯ clang --version clang version 21.0.0git (https://github.com/llvm/llvm-project.git a80bccc6847be104948f46d313f03ac6b9ccb292) > > > > > This issue does not occur when: > > - Building for ppc64le target using GCC on x86_64 host > > - Building for ppc64le target using Clang on ppc64le host > > Is it the same CLANG version ? # clang --version clang version 22.0.0git (https://github.com/llvm/llvm-project.git 2f755c543ab357bd83235592fcee37fa391cdd9d) > > > - Building for ppc64le target using GCC on ppc64le host > > > > For details refer [1] > > > > [1] https://sourceware.org/bugzilla/show_bug.cgi?id=33481 > vishalc