linux-kernel - Re: [PATCH v2 00/11] perf/uprobe: Optimize uprobes

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]

Message-ID: <20240712091323.GB19796@noisy.programming.kicks-ass.net>
Date: Fri, 12 Jul 2024 11:13:23 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc: oleg@...hat.com, mingo@...nel.org, andrii@...nel.org,
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
	rostedt@...dmis.org, mhiramat@...nel.org, jolsa@...nel.org,
	clm@...a.com, paulmck@...nel.org
Subject: Re: [PATCH v2 00/11] perf/uprobe: Optimize uprobes

On Thu, Jul 11, 2024 at 09:57:44PM -0700, Andrii Nakryiko wrote:

> You should only need not-too-old Clang to build everything (Clang 12+
> should work, I believe). But do let me know if you run into troubles.

A quick look at the thing shows me it's full of BPF gunk :/

Which means, I probably also need a kernel with BPF and BTF and all that
other gunk on -- which I don't have on any of my machines.

Esp. the BTF stuff is a force kill on all my builds as it completely
destroys build times.

> But then I also ran it on Linux built from perf/uprobes branch (these
> patches), and after a few seconds I see that there is no more
> attachment/detachment happening. Eventually I got splats, which you
> can see in [1]. I used `sudo ./uprobe-stress -a10 -t5 -m5 -f3` command
> to run it inside my QEMU image.

OK, I'll see if I can make it work.