Re: CONFIG_MK6 = lsof hangs unkillable

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I had this happen earlier today, but at the moment I can't reproduce it.

The offending kernel was 2.6.16-rc3 with CONFIG_MK7=y

I'll post an oops and config if it happens again.

Brandon

On Mon, 01/16/06 at 16:58:55 -0600, Tony Mantler wrote:
> 
> On 15-Jan-06, at 10:43 PM, Tony Mantler wrote:
> 
> >I'm having trouble running lsof on 2.6.15.1 when the kernel is  
> >compiled with CONFIG_MK6. When run as root, lsof will segfault, and  
> >when run as a user lsof will hang unkillable.
> >
> >The same kernel, same machine, but compiled with CONFIG_MK7 runs  
> >just lsof just fine.
> 
> To follow up on this, it appears that things are getting stuck while  
> reading /proc/*/maps, specifically it hangs in fs/proc/task_mmu.c in  
> m_start() at down_read(&mm->mmap_sem). The same thing happens when  
> trying to readlink /proc/*/exe.
> 
> I'm really not sure why this lock is getting stuck. Can anyone  
> reproduce this?
> 
> --
> Tony 'Nicoya' Mantler -- Master of Code-fu -- [email protected]
> --  http://nicoya.feline.pp.se/  --  http://www.ubb.ca/  --
> 
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