Re: Crash in -next due to 'drivers/of: Fix depth when unflattening devicetree'

From	Guenter Roeck <linux@roeck-us.net>
Newsgroups	linux.kernel
Subject	Re: Crash in -next due to 'drivers/of: Fix depth when unflattening devicetree'
Date	2016-05-20 11:20 +0200
Message-ID	<rAOL8-3Eg-11@gated-at.bofh.it> (permalink)
References	<rAmFb-2ER-1@gated-at.bofh.it> <rAxqV-12J-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 05/19/2016 07:47 AM, Rob Herring wrote:
> On Wed, May 18, 2016 at 10:11 PM, Guenter Roeck <linux@roeck-us.net> wrote:
>> Hi,
>>
>> some of my ppc qemu tests crash with the following log message.
>>
>> VFS: Cannot open root device "hda" or unknown-block(0,0): error -6
>> Please append a correct "root=" boot option; here are the available partitions:
>> 0100            4096 ram0  (driver?)
>> 0101            4096 ram1  (driver?)
>> 0102            4096 ram2  (driver?)
>> 0103            4096 ram3  (driver?)
>> 0104            4096 ram4  (driver?)
>> 0105            4096 ram5  (driver?)
>> 0106            4096 ram6  (driver?)
>> 0107            4096 ram7  (driver?)
>> 0108            4096 ram8  (driver?)
>> 0109            4096 ram9  (driver?)
>> 010a            4096 ram10  (driver?)
>> 010b            4096 ram11  (driver?)
>> 010c            4096 ram12  (driver?)
>> 010d            4096 ram13  (driver?)
>> 010e            4096 ram14  (driver?)
>> 010f            4096 ram15  (driver?)
>> 1600            8383 hdc  driver: ide-gd
>> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
>>
>> A complete boot log is available at
>> http://kerneltests.org/builders/qemu-ppc-next/builds/408/steps/qemubuildcommand/logs/stdio
>>
>> Bisect points to commit 'drivers/of: Fix depth when unflattening devicetree'.
>> Reverting this commit fixes the problem. Bisect log is attached.
>
> I've pushed out a fix this morning with an updated version of that
> patch [1]. Please test.
>

The problem is no longer seen in next-20160520.

Thanks,
Guenter

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Crash in -next due to 'drivers/of: Fix depth when unflattening  devicetree' Guenter Roeck <linux@roeck-us.net> - 2016-05-19 05:20 +0200
  Re: Crash in -next due to 'drivers/of: Fix depth when unflattening  devicetree' Guenter Roeck <linux@roeck-us.net> - 2016-05-19 06:10 +0200
  Re: Crash in -next due to 'drivers/of: Fix depth when unflattening devicetree' Rob Herring <robh@kernel.org> - 2016-05-19 16:50 +0200
    Re: Crash in -next due to 'drivers/of: Fix depth when unflattening  devicetree' Guenter Roeck <linux@roeck-us.net> - 2016-05-20 11:20 +0200

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