Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1264255
| From | Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: i.MX6: Oops when unplugging a USB key |
| Date | 2015-11-06 20:30 +0100 |
| Message-ID | <qrURZ-d0-27@gated-at.bofh.it> (permalink) |
| References | <qrSdr-6Ta-7@gated-at.bofh.it> <qrUIj-9d-29@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
2015-11-06 20:12 GMT+01:00 Joshua Clayton <joshua.clayton@uniwest.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? I can see it every time I unplug my device. I must conduct some tests, but seems to be somehow related to cpufreq and maybe the PMIC too (I have cherry-picked the patches allowing anatop to use a vin-supply). I didn't have time to bisect, I am sure I didn't have it when cpufreq was not used at all... JM -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread
i.MX6: Oops when unplugging a USB key Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com> - 2015-11-06 17:40 +0100
Re: i.MX6: Oops when unplugging a USB key Arnd Bergmann <arnd@arndb.de> - 2015-11-06 17:40 +0100
Re: i.MX6: Oops when unplugging a USB key Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com> - 2015-11-06 18:00 +0100
Re: i.MX6: Oops when unplugging a USB key Joshua Clayton <joshua.clayton@uniwest.com> - 2015-11-06 20:20 +0100
Re: i.MX6: Oops when unplugging a USB key Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com> - 2015-11-06 20:30 +0100
csiph-web