linux-kernel - Re: [PATCH v1 RFC Zisslpcfi 15/20] sslp prctl: arch-agnostic prctl for shadow stack and landing pad instr

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 7 Jun 2023 21:22:32 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Deepak Gupta <debug@...osinc.com>
Cc:     linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Subject: Re: [PATCH v1 RFC Zisslpcfi 15/20] sslp prctl: arch-agnostic prctl
 for shadow stack and landing pad instr

On Sun, Feb 12, 2023 at 08:53:44PM -0800, Deepak Gupta wrote:

> +int __weak arch_get_shadow_stack_status(struct task_struct *t, unsigned long __user *status)
> +{
> +	return -EINVAL;
> +}

Having looked at this further is there any great reason why the status
is passed as a pointer?  It seems needless effort.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)