linux-kernel - Re: [PATCH 0/2] selftests/verification: Add initial RV tests

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: <c6b17fa02a82c61a64abaf6c0abb5154f79c4fbf.camel@redhat.com>
Date: Fri, 17 Oct 2025 10:50:06 +0200
From: Gabriele Monaco <gmonaco@...hat.com>
To: Nam Cao <namcao@...utronix.de>, linux-kernel@...r.kernel.org, Steven
 Rostedt <rostedt@...dmis.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, John Kacur <jkacur@...hat.com>, 
 Waylon Cude <wcude@...hat.com>, linux-trace-kernel@...r.kernel.org,
 linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 0/2] selftests/verification: Add initial RV tests

On Fri, 2025-10-17 at 09:38 +0200, Nam Cao wrote:
> Gabriele Monaco <gmonaco@...hat.com> writes:
> > Add a series of tests to validate the RV tracefs API and basic
> > functionality.
> 
> Thanks for the writing this test. My bash knowledge is not great, and
> I'm not familiar with the existing ftrace test, so I am not able to
> review all the details. But looks good as far as I can tell:
> 
> Acked-by: Nam Cao <namcao@...utronix.de>

Thanks for the ack!
I think that's good for now as it's going to go to Steve as a next step anyway.

I'm going to send a V2 with the following change just to increase the likelihood
of a wwnr reaction and prepare a PR.
I'll keep your ack there unless you explicitly mean otherwise.

Thanks,
Gabriele

diff --git a/tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc
b/tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc
index bc0b2668bf7c..5a59432b1d93 100644
--- a/tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc
+++ b/tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc
@@ -4,9 +4,10 @@
 # requires: available_reactors wwnr:monitor printk:reactor stress-ng:program
 
 load() { # returns true if there was a reaction
-       local lines_before
+       local lines_before num
+       num=$((($(nproc) + 1) / 2))
        lines_before=$(dmesg | wc -l)
-       stress-ng --cpu-sched 2 --timer 2 -t 5 -q
+       stress-ng --cpu-sched "$num" --timer "$num" -t 5 -q
        dmesg | tail -n $((lines_before + 1)) | grep -q "rv: monitor wwnr does
not allow event"
 }