Re: -stable commit 87cc4d1e (bisected) causes system freeze

Stratos Psomadakis
2011-07-13T19:51:37Z

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On 13/07/2011 09:55 μμ, Stratos Psomadakis wrote:
> On 13/07/2011 05:28 μμ, Marcus Becker wrote:
>> Hi,
>>
>> With the upgrade to 2.6.39.2, I cannot copy more than ~1GB of data
>> over the network before my input devices lock up.
>> Example:
>> use scp on tty1 to copy a folder or file larger than 3GB over my
>> gigabit network and after ~1min the keyboard stops responding.
>> use cp on tty1 with an nfs-3 share mounted over the same network and
>> try to copy the same file, same happens
>>
>> I can hit ctrl+c for about 20-30 sec and eventually get an interrupt
>> that stops the copying, then the input devices slowly gain control
>> again. If I do the same on X, there is no chance to get in between and
>> I have to use SysRq to reboot.
>>
>> In our bug report at https://bugs.gentoo.org/show_bug.cgi?id=373109
>> We did a bisect between 2.6.39.1 and 2.6.39.2 and found the following
>> patch is causing this problem:
>>
>> commit 87cc4d1e3e05af38c7c51323a3d86fe2572ab033
>> Author: Chris Wright <chrisw@sous-sol.org>
>> Date: Sat May 28 13:15:04 2011 -0500
>>
>> intel-iommu: Dont cache iova above 32bit
>>
>> I will also attach dmesg, current kernel config, and my bisect log (I
>> put a uname -a into the log after each bisect) plus git bisect log
>>
>> Please let me know if you need more information.
>>
>> Thanks,
>>
>> Marcus
> CC'ed the people who signed-off the patch.
>
Bug #39312 [1] at b.k.o

[1] https://bugzilla.kernel.org/show_bug.cgi?id=39312

--
Stratos Psomadakis
<psomas@gentoo.org>

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