linux-kernel - Re: v4.9 to v4.10 regression: oops when USB cable is plugged in.

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Message-ID: <20170123224454.GY7403@atomide.com>
Date:   Mon, 23 Jan 2017 14:44:54 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Pavel Machek <pavel@....cz>
Cc:     pali.rohar@...il.com, sre@...nel.org,
        kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, khilman@...nel.org,
        aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
        patrikbachan@...il.com, serge@...lyn.com, abcloriens@...il.com,
        b-liu@...com, linux-usb@...r.kernel.org
Subject: Re: v4.9 to v4.10 regression: oops when USB cable is plugged in.

* Pavel Machek <pavel@....cz> [170123 14:26]:
> [25392.239837] Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa0ab060
> [25392.239868] pgd = c0004000
> [25392.239898] [fa0ab060] *pgd=48011452(bad)
> [25392.239929] Internal error: : 1028 [#1] ARM
> [25392.239929] Modules linked in:
> [25392.239959] CPU: 0 PID: 24322 Comm: kworker/0:1 Not tainted 4.10.0-rc5-142127-g41f2839-dirty #222
> [25392.239990] Hardware name: Nokia RX-51 board
> [25392.240020] Workqueue: events musb_irq_work
> [25392.240051] task: cd44d5c0 task.stack: cd308000
> [25392.240051] PC is at musb_default_readb+0x0/0xc
> [25392.240081] LR is at musb_irq_work+0x1c/0x1b0

OK I'm pretty sure the patch I posted few days ago fixes
this. Can you please test patch "[PATCH] usb: musb: Fix
external abort on non-linefetch for musb_irq_work()"?

I was able to hit that only once so far, do you hit it
every time with your built-in g_ether .config?

Regards,

Tony