From: poma <pomidorabelisima@gmail.com>
To: wim@djo.tudelft.nl, Oliver Neukum <oneukum@suse.com>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: crash by cdc_acm driver in kernels 4.8-rc1/5
Date: Tue, 15 Nov 2016 12:26:00 +0100 [thread overview]
Message-ID: <cdba9e09-6550-a4b5-a3ed-86ce212d8a4a@gmail.com> (raw)
In-Reply-To: <20161115001619.GA21030@djo.tudelft.nl>
On 15.11.2016 01:16, Wim Osterholt wrote:
> On Tue, Oct 18, 2016 at 02:18:43PM +0200, Oliver Neukum wrote:
>
>> It definitely does not crash and is probed and your .config is not
>> extremely unusual.
>
> Hmmm.
>
>> ... Something odd is going on.
>
> Whell, yes.
> The only thing that appears you'll have to do is unset 'CONFIG_SMP'.
>
> My machines didn't have the luxury of multicore processors (until recently),
> so there never has been any reason to deliberately switch these options on!
>
> In the process of searching, many options may have changed. The crash/OOPS
> has now mitigated into just a WARNING with a call trace.
> (Or it could be a totally different bug?)
> After the call trace the device is working normally and a shutdown
> completes to the end now.
> That is with the config given here:
> http://webserver.djo.tudelft.nl/.config-4.9-rc4.OK (CONFIG_SMP=y)
> http://webserver.djo.tudelft.nl/WARNING-4.9-rc4 (call trace for C_S unset)
>
> Tests on other machines with (slightly) different configs all seem to
> confirm that the problems are gone when CONFIG_SMP is set.
>
> Regards, Wim.
>
>
Try retest with mainline 4.9-rc5,
CONFIG_SMP was not crucial[1].
$ grep CONFIG_SMP /boot/config-4.9.0-0.rc5.git0.1.fc26.x86_64*
/boot/config-4.9.0-0.rc5.git0.1.fc26.x86_64:CONFIG_SMP=y
/boot/config-4.9.0-0.rc5.git0.1.fc26.x86_64+debug:CONFIG_SMP=y
[1] https://www.spinics.net/lists/linux-usb/msg148852.html
next prev parent reply other threads:[~2016-11-15 11:26 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-08 11:58 crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt
2016-09-08 12:20 ` Oliver Neukum
2016-09-08 12:58 ` Wim Osterholt
2016-09-08 13:05 ` Oliver Neukum
2016-09-08 15:00 ` Wim Osterholt
2016-09-08 16:54 ` Wim Osterholt
2016-09-09 13:24 ` Wim Osterholt
2016-09-12 2:43 ` Wim Osterholt
2016-09-20 13:05 ` Oliver Neukum
2016-09-20 15:45 ` Wim Osterholt
2016-09-21 12:21 ` Oliver Neukum
2016-09-21 16:21 ` Wim Osterholt
2016-09-21 16:41 ` Wim Osterholt
2016-09-22 14:40 ` Oliver Neukum
2016-09-22 17:56 ` Wim Osterholt
2016-09-22 19:21 ` Wim Osterholt
2016-09-23 10:04 ` Wim Osterholt
2016-09-27 16:34 ` Wim Osterholt
2016-09-28 9:16 ` Oliver Neukum
2016-09-28 14:46 ` Wim Osterholt
2016-09-28 15:08 ` Wim Osterholt
2016-09-28 15:23 ` Oliver Neukum
2016-09-29 13:26 ` Wim Osterholt
2016-10-06 10:53 ` Oliver Neukum
2016-10-17 14:10 ` Oliver Neukum
2016-10-17 15:20 ` Wim Osterholt
2016-10-18 12:18 ` Oliver Neukum
2016-10-18 14:51 ` Wim Osterholt
2016-11-05 13:34 ` Wim Osterholt
2016-11-15 0:16 ` Wim Osterholt
2016-11-15 11:07 ` Oliver Neukum
2016-11-15 11:26 ` poma [this message]
2016-11-15 13:29 ` Wim Osterholt
2016-11-16 12:34 ` Oliver Neukum
2016-11-16 15:07 ` Wim Osterholt
2016-11-17 1:57 ` Wim Osterholt
2016-11-17 9:14 ` Wim Osterholt
2016-11-17 16:11 ` Wim Osterholt
2016-11-21 13:19 ` Oliver Neukum
2016-11-21 15:58 ` Wim Osterholt
2016-11-21 20:23 ` Wim Osterholt
2016-11-21 23:49 ` poma
2016-11-22 17:50 ` Bjørn Mork
2016-11-23 0:48 ` Wim Osterholt
2016-11-22 15:38 ` Wim Osterholt
2016-11-22 18:08 ` Bjørn Mork
2016-11-23 0:54 ` Wim Osterholt
2016-11-23 7:37 ` Bjørn Mork
2016-11-23 15:02 ` Alan Stern
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