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Message-ID: <0a06a54e-0348-4964-ab90-48c648712ed6@sirena.org.uk>
Date: Mon, 21 Aug 2023 14:11:30 +0100
From: Mark Brown <broonie@...nel.org>
To: Robin Murphy <robin.murphy@....com>
Cc: Shreeya Patel <shreeya.patel@...labora.com>,
Saravana Kannan <saravanak@...gle.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, John Stultz <jstultz@...gle.com>,
"David S. Miller" <davem@...emloft.net>,
Alexey Kuznetsov <kuznet@....inr.ac.ru>,
Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
Jakub Kicinski <kuba@...nel.org>,
Rob Herring <robh@...nel.org>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
Andy Shevchenko <andy.shevchenko@...il.com>,
Sudeep Holla <sudeep.holla@....com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
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Anders Roxell <anders.roxell@...aro.org>,
linux-pm@...r.kernel.org, Nathan Chancellor <nathan@...nel.org>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
"gustavo.padovan@...labora.com" <gustavo.padovan@...labora.com>,
Ricardo CaƱuelo Navarro
<ricardo.canuelo@...labora.com>,
Guillaume Charles Tucker <guillaume.tucker@...labora.com>,
usama.anjum@...labora.com, kernelci@...ts.linux.dev
Subject: Re: [PATCH 5.17 127/298] driver core: Fix wait_for_device_probe() &
deferred_probe_timeout interaction
On Mon, Aug 21, 2023 at 01:39:11PM +0100, Robin Murphy wrote:
> On 2023-08-21 12:35, Shreeya Patel wrote:
> > AFAIK, script for running the tests is immediately ran after the boot
> > process is complete so there is no wait time.
> Regardless of what the kernel is doing, it seems like a fundamentally dumb
> test to specifically ask deferred probe to wait for up to a minute then
> complain that it hasn't finished after 11 seconds :/
IIRC that stuff is expecting the modules to be loaded from the initramfs
and checking from the main system which is a bit more sensible (at least
in the case where there is a main filesystem). It's vulnerable to races
but less so, especially given the time a Debian rootfs typically takes
to boot over NFS.
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