From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A4600F9CB; Thu, 4 Sep 2025 03:52:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756957964; cv=none; b=n5NUioE1NICm559bIycGCYy3dt72b/2VeaBXe0lSQuRHio7s5w0KY/qhFMQA3yHbo4NtpOEdFUzT37niwsez9Q5Ba+Q6NfLFMG7OfmAS5IHz2rTKDxnE87q2V+dqs0cKS9U98/K+Sziyo/yo+Re84ryylA383wIWTqQ/MoNsY4Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756957964; c=relaxed/simple; bh=dW3DY0tGbJhPve03HuDNPrD6QxC9sjo3oWoZbh4z3oI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=dK/A+20NHJ/cJHlnqW96+kRo3IjJzpcVDDSmb9L62kuVPdmmjIBVmK9wrZk6dV8lKhD9Z76s25ppv/Qf5RrzyY+9f1OdnfwHR47TE9MhxSnPPVug+s6neRucni3CSFvcVAlMMfFNynNOiRCPAR2rZF/3fJgv7I1YIJScsdf4G2M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k4SggvOd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="k4SggvOd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7225AC4CEF0; Thu, 4 Sep 2025 03:52:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756957964; bh=dW3DY0tGbJhPve03HuDNPrD6QxC9sjo3oWoZbh4z3oI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k4SggvOd4BbUbbGwaWFPdPRseaOkhRGGpexIV08g70d9iEWifpyMcHKg1LDKhagxb X73aX3cyNra2YQJQYXiUrPpRXEjmEImKKuMFsLhD62OU6yN1wmci+wvDeF3PkMUota NnzUIVAAyJ5GmDDpNPiAQvA2UKguSTveJwuqMti483XoZH4JtePjPcbk0fG8QozNWM rfYDgshAh+BKzbWevQChmBmw8nuwjdklhR0lGWT53q7FGw3IjDG/pKVPiIzKATwmxI WtyuT5A0cPe2iwRRD+02ucfirVq48nuR2WihTkaDccXlV3ixklm/IyUa94iEQo6mur NMLqBhZPXxLMA== From: Kees Cook To: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Svetlana Parfenova Cc: Kees Cook , paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.f, viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, akpm@linux-foundation.org, david@redhat.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com Subject: Re: [RFC RESEND v3] binfmt_elf: preserve original ELF e_flags for core dumps Date: Wed, 3 Sep 2025 20:52:40 -0700 Message-Id: <175695795639.3712216.15743949549231818751.b4-ty@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250901135350.619485-1-svetlana.parfenova@syntacore.com> References: <20250806161814.607668-1-svetlana.parfenova@syntacore.com> <20250901135350.619485-1-svetlana.parfenova@syntacore.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit 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