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Message-ID: <777991bb72f8842e3e730f9b600b2086478f5d36.camel@suse.com>
Date:   Mon, 22 Feb 2021 10:36:01 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     Bruno Thomsen <bruno.thomsen@...il.com>, linux-usb@...r.kernel.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Cc:     Bruno Thomsen <bth@...strup.com>,
        Lars Alex Pedersen <laa@...strup.com>
Subject: Re: usb: cdc-acm: BUG kmalloc-128 Poison overwritten

Am Donnerstag, den 18.02.2021, 16:52 +0100 schrieb Bruno Thomsen:
> Den fre. 12. feb. 2021 kl. 16.33 skrev Bruno Thomsen <bruno.thomsen@...il.com>:
> > Hi,
> > 
> > I have been experience random kernel oops in the cdc-acm driver on
> > imx7 (arm arch). Normally it happens during the first 1-3min runtime
> > after power-on. Below oops is from 5.8.17 mainline kernel with an
> > extra patch back-ported in an attempt to fix it:
> > 38203b8385 ("usb: cdc-acm: fix cooldown mechanism")
> 
> I can now boot board with 5.11 kernel without any extra patches and
> it produce similar issue. Hopefully that make the oops more useful.
> Issue has been seen on multiple devices, so I don't think it's a bad
> hardware issue.

Hi,

is this a regression from 5.10?

	Regards
		Oliver


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