linux-kernel - Re: 2.6.27-rc4: 90% system time because of khubd, unable to reboot

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Message-Id: <200808222109.55358.arvidjaar@mail.ru>
Date:	Fri, 22 Aug 2008 21:09:53 +0400
From:	Andrey Borzenkov <arvidjaar@...l.ru>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	linux-usb@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	"Greg Kroah-Hartman" <gregkh@...e.de>
Subject: Re: 2.6.27-rc4: 90% system time because of khubd, unable to reboot

On Friday 22 August 2008, Rafael J. Wysocki wrote:
> On Friday, 22 of August 2008, Andrey Borzenkov wrote:
> > On Friday 22 August 2008, Andrey Borzenkov wrote:
> > > 
> > > 2.6.26-rc3 is OK
> 
> Thanks for the report, but ...
>  
> > > top - 20:11:08 up 5 min,  1 user,  load average: 7.05, 4.50, 1.93
> > > Tasks: 103 total,   3 running, 100 sleeping,   0 stopped,   0 zombie
> > > Cpu(s):  8.3%us, 91.7%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> > > Mem:    494172k total,   278192k used,   215980k free,    18264k buffers
> > > Swap:   500432k total,        0k used,   500432k free,   159376k cached
> > > 
> > >   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> > >   851 root      15  -5     0    0    0 R 65.6  0.0   3:21.16 khubd
> > 
> > reverting 38b375d9610e2467cb793a84d17c6f65e44cdb39 fixed it
> > 
> 
> ... that is:
> 
> commit 38b375d9610e2467cb793a84d17c6f65e44cdb39
> Author: Alan Stern <stern@...land.harvard.edu>
> Date:   Mon Jul 21 09:56:26 2008 -0400
> 
>     USB: OHCI: fix system hang caused by earlier patch
> 
>     Signed-off-by: Alan Stern <stern@...land.harvard.edu>
>     Tested by: Andrey Borzenkov <arvidjaar@...l.ru>
>     Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
> 
> so it apparently used to work for you at that time.  What gives?
> 

Well, you should not commit a fix without commiting code that has been
fixed first :)

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