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

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Message-ID: <20251013040148.560439-1-vishalc@linux.ibm.com>
Date: Mon, 13 Oct 2025 09:31:48 +0530
From: Vishal Chourasia <vishalc@...ux.ibm.com>
To: christophe.leroy@...roup.eu, maddy@...ux.ibm.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arch/powerpc: Remove .interp section in vmlinux

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.

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  
- Building for ppc64le target using GCC on ppc64le host

For details refer [1]

[1] https://sourceware.org/bugzilla/show_bug.cgi?id=33481

vishalc