linux-kernel - Re: [PATCH] riscv/entry: get correct syscall number from syscall_get

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] [day] [month] [year] [list]

Message-ID: <bded8cfb-c881-4c78-a8a8-1e0c8abe327f@coelacanthus.name>
Date: Sun, 1 Dec 2024 06:39:45 +0800
From: Celeste Liu <uwu@...lacanthus.name>
To: Björn Töpel <bjorn@...nel.org>,
 Celeste Liu <coelacanthushex@...il.com>
Cc: Ron Economos <re@...z.net>, Thomas Gleixner <tglx@...utronix.de>,
 Celeste Liu via B4 Relay <devnull+CoelacanthusHex.gmail.com@...nel.org>,
 Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
 <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Björn Töpel <bjorn@...osinc.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Palmer Dabbelt <palmer@...osinc.com>, Alexandre Ghiti <alex@...ti.fr>,
 "Dmitry V. Levin" <ldv@...ace.io>, Andrea Bolognani <abologna@...hat.com>,
 Felix Yan <felixonmars@...hlinux.org>, Ruizhe Pan <c141028@...il.com>,
 Shiqi Zhang <shiqi@...c.iscas.ac.cn>, Guo Ren <guoren@...nel.org>,
 Yao Zi <ziyao@...root.org>, Han Gao <gaohan@...as.ac.cn>,
 linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH] riscv/entry: get correct syscall number from
 syscall_get_nr()

On 2024-10-29 03:33, Björn Töpel wrote:
> On Mon, 28 Oct 2024 at 17:26, Celeste Liu <coelacanthushex@...il.com> wrote:
>>
>>
>> On 2024-10-28 08:17, Ron Economos wrote:
>>> On 10/27/24 2:52 PM, Thomas Gleixner wrote:
>>>> On Mon, Oct 28 2024 at 01:01, Celeste Liu wrote:
>>>>> On 2024-10-27 23:56, Thomas Gleixner wrote:
>>>>>> Equivalently you need to be able to modify orig_a0 for changing arg0,
>>>>>> no?
>>>>> Ok.
>>>>>
>>>>> Greg, could you accept a backport a new API parameter for
>>>>> PTRACE_GETREGSET/PTRACE_SETREGSET to 4.19 LTS branch?
>>>> Fix the problem properly and put a proper Fixes tag on it and worry
>>>> about the backport later.
>>>>
>>>> Thanks,
>>>>
>>>>          tglx
>>>>
>>> I wouldn't worry about backporting to the 4.19 kernel. It's essentially prehistoric for RISC-V. There's no device tree support for any hardware. Also, 4.19 will be going EOL very soon (December 2024).
>>
>> Ok, I will work on preparing a new patch to add a new set in
>> PTRACE_GETREGSET/PTRACE_SETREGSET.
> 
> Thanks for working/finding working on this! Looking forward to the patch!

The patch to add new regset has been sent.
See https://lore.kernel.org/lkml/20241201-riscv-new-regset-v1-1-c83c58abcc7b@coelacanthus.name/T/