linux-kernel - Re: [RFC RESEND v3] binfmt_elf: preserve original ELF e

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Message-Id: <175695795639.3712216.15743949549231818751.b4-ty@kernel.org>
Date: Wed,  3 Sep 2025 20:52:40 -0700
From: Kees Cook <kees@...nel.org>
To: linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	Svetlana Parfenova <svetlana.parfenova@...tacore.com>
Cc: Kees Cook <kees@...nel.org>,
	paul.walmsley@...ive.com,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	alex@...ti.f,
	viro@...iv.linux.org.uk,
	brauner@...nel.org,
	jack@...e.cz,
	akpm@...ux-foundation.org,
	david@...hat.com,
	lorenzo.stoakes@...cle.com,
	Liam.Howlett@...cle.com,
	vbabka@...e.cz,
	rppt@...nel.org,
	surenb@...gle.com,
	mhocko@...e.com
Subject: Re: [RFC RESEND v3] binfmt_elf: preserve original ELF e_flags for core dumps

On Mon, 01 Sep 2025 20:53:50 +0700, Svetlana Parfenova wrote:
> Some architectures, such as RISC-V, use the ELF e_flags field to encode
> ABI-specific information (e.g., ISA extensions, fpu support). Debuggers
> like GDB rely on these flags in core dumps to correctly interpret
> optional register sets. If the flags are missing or incorrect, GDB may
> warn and ignore valid data, for example:
> 
>     warning: Unexpected size of section '.reg2/213' in core file.
> 
> [...]

Applied to for-next/execve, thanks!

[1/1] binfmt_elf: preserve original ELF e_flags for core dumps
      https://git.kernel.org/kees/c/8c94db0ae97c

Take care,

-- 
Kees Cook