linux-kernel - Re: [PATCH RFCv3 00/23] uprobes: Add support to optimize usdt probes on x86

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: <Z9wdXPtElYOpObld@krava>
Date: Thu, 20 Mar 2025 14:51:24 +0100
From: Jiri Olsa <olsajiri@...il.com>
To: Oleg Nesterov <oleg@...hat.com>
Cc: David Hildenbrand <david@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrii Nakryiko <andrii@...nel.org>,
	Eyal Birger <eyal.birger@...il.com>, kees@...nel.org,
	bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org, x86@...nel.org,
	Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
	John Fastabend <john.fastabend@...il.com>,
	Hao Luo <haoluo@...gle.com>, Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Alan Maguire <alan.maguire@...cle.com>,
	David Laight <David.Laight@...lab.com>,
	Thomas Weißschuh <thomas@...ch.de>
Subject: Re: [PATCH RFCv3 00/23] uprobes: Add support to optimize usdt probes
 on x86_64

On Thu, Mar 20, 2025 at 01:23:44PM +0100, Oleg Nesterov wrote:
> On 03/20, Jiri Olsa wrote:
> >
> > hi,
> > this patchset adds support to optimize usdt probes on top of 5-byte
> > nop instruction.
> 
> Just in case... This series conflicts with (imo very important) changes
> from David,
> 
> 	[PATCH v2 0/3] kernel/events/uprobes: uprobe_write_opcode() rewrite
> 	https://lore.kernel.org/all/20250318221457.3055598-1-david@redhat.com/
> 
> I think they should be merged first.

ok, I'll check on those

thanks,
jirka

> 
> (and I am not sure yet, but it seems that we should cleanup (fix?) the
>  update_ref_ctr() logic before other changes).
> 
> Oleg.
>