From: joshua.clayton@uniwest.com (Joshua Clayton)
To: linux-arm-kernel@lists.infradead.org
Subject: i.MX6: Oops when unplugging a USB key
Date: Fri, 06 Nov 2015 11:12:39 -0800 [thread overview]
Message-ID: <2393919.Res6zC5Fd5@jclayton-pc> (raw)
In-Reply-To: <CAH-u=81BFm1nquN5z7hFN9auV=9dPMPkRFX_PneK22UXgPbJnA@mail.gmail.com>
On Friday, November 06, 2015 05:32:30 PM Jean-Michel Hautbois wrote:
> Hi !
>
> I have an issue on my i.MX6 board I don't understand (kernel is a 4.2)...
> When I connect a USB key, and then disconnect it, it oopses and
> reboots (as I have panic on oops, and reboot on panic).
> Seems to be on the umount part...
> The USB is connected through a smsc95xx but I don't think this is related...
>
> Any idea is welcome :)
>
I have seen a similar issue intermitently on my imx6 based board.
I would also like to find a fix.
Specifically: unplugging usb storage occasionally causes an oops.
I'm guessing a race with use-after-free, but I haven't tracked it down.
In my environment it has been hard to reproduce, and I wasn't able to
grok anything useful in the trace.
Are you seeing this behavior consistently?
Perhaps the driver is freeing more than it should when a device is disconnected.
--
Joshua Clayton
Software Engineer
UniWest
122 S. 4th Avenue
Pasco, WA 99301
(509) 544-0720
WARNING: multiple messages have this Message-ID (diff)
From: Joshua Clayton <joshua.clayton@uniwest.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com>,
Fabio Estevam <fabio.estevam@freescale.com>,
Jon Nettleton <jon.nettleton@gmail.com>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: i.MX6: Oops when unplugging a USB key
Date: Fri, 06 Nov 2015 11:12:39 -0800 [thread overview]
Message-ID: <2393919.Res6zC5Fd5@jclayton-pc> (raw)
In-Reply-To: <CAH-u=81BFm1nquN5z7hFN9auV=9dPMPkRFX_PneK22UXgPbJnA@mail.gmail.com>
On Friday, November 06, 2015 05:32:30 PM Jean-Michel Hautbois wrote:
> Hi !
>
> I have an issue on my i.MX6 board I don't understand (kernel is a 4.2)...
> When I connect a USB key, and then disconnect it, it oopses and
> reboots (as I have panic on oops, and reboot on panic).
> Seems to be on the umount part...
> The USB is connected through a smsc95xx but I don't think this is related...
>
> Any idea is welcome :)
>
I have seen a similar issue intermitently on my imx6 based board.
I would also like to find a fix.
Specifically: unplugging usb storage occasionally causes an oops.
I'm guessing a race with use-after-free, but I haven't tracked it down.
In my environment it has been hard to reproduce, and I wasn't able to
grok anything useful in the trace.
Are you seeing this behavior consistently?
Perhaps the driver is freeing more than it should when a device is disconnected.
--
Joshua Clayton
Software Engineer
UniWest
122 S. 4th Avenue
Pasco, WA 99301
(509) 544-0720
next prev parent reply other threads:[~2015-11-06 19:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-06 16:32 i.MX6: Oops when unplugging a USB key Jean-Michel Hautbois
2015-11-06 16:32 ` Jean-Michel Hautbois
2015-11-06 16:38 ` Arnd Bergmann
2015-11-06 16:38 ` Arnd Bergmann
2015-11-06 16:54 ` Jean-Michel Hautbois
2015-11-06 16:54 ` Jean-Michel Hautbois
2015-11-06 19:12 ` Joshua Clayton [this message]
2015-11-06 19:12 ` Joshua Clayton
2015-11-06 19:28 ` Jean-Michel Hautbois
2015-11-06 19:28 ` Jean-Michel Hautbois
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