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Re: crash by cdc_acm driver in kernels 4.8-rc1/5

From Oliver Neukum <oneukum@suse.com>
Newsgroups linux.kernel
Subject Re: crash by cdc_acm driver in kernels 4.8-rc1/5
Date 2016-09-22 16:50 +0200
Message-ID <skdu2-7CL-23@gated-at.bofh.it> (permalink)
References (4 earlier) <sgptM-5TD-5@gated-at.bofh.it> <sjt7P-3qP-19@gated-at.bofh.it> <sjvsZ-4Ti-1@gated-at.bofh.it> <sjOOZ-vu-1@gated-at.bofh.it> <sjSSC-2Xx-19@gated-at.bofh.it>
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On Wed, 2016-09-21 at 18:41 +0200, Wim Osterholt wrote:
> On Wed, Sep 21, 2016 at 02:21:17PM +0200, Oliver Neukum wrote:
> > in sysfs.
> 
> Google pointed me to /sys/bus/usb/drivers/usb/*
> where I find all kinds of 'bConfigurationValue'.
> Now is the problem to find which one you could mean.
> 
> Under /sys/bus/usb/drivers/usb/7-1  I find
> manufacturer  which reads 'Conexant'  and
> bConfigurationValue  which reads '1'

OK. Strange. Please do

dmesg -c
echo 9 > /proc/sysrq-trigger
modprobe cdc_acm
echo "module cdc_acm +mpf" > /sys/kernel/debug/dynamic_debug/control

[plug your device in]

and provide the full output of dmesg after that.

	Regards
		Oliver

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Thread

Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-12 04:50 +0200
  Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Oliver Neukum <oneukum@suse.com> - 2016-09-20 15:20 +0200
    Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-20 17:50 +0200
      Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Oliver Neukum <oneukum@suse.com> - 2016-09-21 14:30 +0200
        Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-21 18:30 +0200
        Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-21 18:50 +0200
          Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Oliver Neukum <oneukum@suse.com> - 2016-09-22 16:50 +0200
            Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-22 20:00 +0200
            Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-22 21:30 +0200
            Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-23 12:10 +0200

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