linux-kernel - Re: [PATCH] arch/powerpc: Remove .interp section in vmlinux

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Message-ID: <aOypxKMzsLR5tAtv@linux.ibm.com>
Date: Mon, 13 Oct 2025 12:57:00 +0530
From: Vishal Chourasia <vishalc@...ux.ibm.com>
To: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: maddy@...ux.ibm.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        "llvm@...ts.linux.dev" <llvm@...ts.linux.dev>,
        Nathan Chancellor <nathan@...nel.org>
Subject: Re: [PATCH] arch/powerpc: Remove .interp section in vmlinux

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