linux-kernel - Re: [PATCH 0/3] remoteproc: xlnx: remote crash recovery

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: <aRIo2MUol09Onu9B@p14s>
Date: Mon, 10 Nov 2025 11:03:04 -0700
From: Mathieu Poirier <mathieu.poirier@...aro.org>
To: Peng Fan <peng.fan@....nxp.com>
Cc: Tanmay Shah <tanmay.shah@....com>, andersson@...nel.org,
	linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] remoteproc: xlnx: remote crash recovery

On Thu, Oct 30, 2025 at 12:21:24PM +0800, Peng Fan wrote:
> Hi Tanmay,
> 
> On Wed, Oct 29, 2025 at 06:51:51PM -0500, Tanmay Shah wrote:
> ...
> >> > 
> >> 
> >> Hi Peng,
> >> 
> >> I don't understand why it should fail. The patch simply implements
> >> rproc_detach() -> rproc_attach() sequence.
> >> 
> >
> >Hi Peng,
> >
> >Thanks for testing the patch. I appreciate your quick response. I think
> >rproc_boot() should be used instead of rproc_attach(). That should probably
> >solve the issue you are facing. I will send v2 with this change for you to
> >try.
> >
> >Thanks,
> >Tanmay
> >
> >> In your case, when you do detach -> attach via sysfs that sequence works?
> >> If that works, then crash recovery should work as well.
> 
> sysfs does not have attach option, only start/stop/detach are there.
> 
> >> 
> >> Could you give steps how do you generate the crash?
> 
> I have not look into the details on why it fails at my side for the 2nd time.
> 
> On my board, the M4 core use watchdog to reset itself and notify Linux, then
> linux side imx_rproc driver will do
> "rproc_report_crash(priv->rproc, RPROC_WATCHDOG);"
> 
> I will give a debug on the failures in a few days.
>

So what is happening here - Peng, do you plan on providing more debugging
information? Tanmay - are you planning on sending a second revision?
 
> Thanks,
> Peng
> 
> >> 
> >> Thanks,
> >> Tanmay
> >> 
> >> > Thanks,
> >> > Peng
> >> 
> >