Using NFS with HIGHMEM support

Using NFS with HIGHMEM support

[Jacky Lam]

Hi,

     I am using mips-linux-3.0.4 with HIGHMEM enabled. Everything is 
working fine, but I find something strange that when I execute a 
statically-linked binary through NFS mounted directory. It will gives me 
an illegal instruction error or  SIGSEGV. If I run it again, the binary 
can run without problem. I have to reboot or drop all the vm cache in 
order to reproduce the error again.

    Also, if I run the binary in harddisk or dynamically link the 
binary, no problem will be found.

     Any suggestion to debug this problem? Thanks.

Jacky

Re: Using NFS with HIGHMEM support

[Dennis.Yxun]

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HI:
 I'm encountered pretty much the same problem here
 I'm tracing with current 3.3-rc4 branch(from ralf's tree)
 If I put rootfs at nand flash + highmem enabled, then execute problem may
give
illegal instruction error, bus error, try it again may run success.
 but if I don't enable highmem, then problem is gone.
 any hints? thanks

Dennis

On Mon, Nov 28, 2011 at 4:37 PM, Jacky Lam <lamshuyin@gmail.com> wrote:

> Hi,
>
>    I am using mips-linux-3.0.4 with HIGHMEM enabled. Everything is working
> fine, but I find something strange that when I execute a statically-linked
> binary through NFS mounted directory. It will gives me an illegal
> instruction error or  SIGSEGV. If I run it again, the binary can run
> without problem. I have to reboot or drop all the vm cache in order to
> reproduce the error again.
>
>   Also, if I run the binary in harddisk or dynamically link the binary, no
> problem will be found.
>
>    Any suggestion to debug this problem? Thanks.
>
> Jacky
>
>

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Re: Using NFS with HIGHMEM support

[Ans_linu]

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Hi ,

I have faced similar issues before.

Not sure this will help. But please take a look at.

http://www.linux-mips.org/archives/linux-mips/2010-08/msg00075.html

Thanks
Ans

On Mon, Feb 27, 2012 at 3:34 PM, Dennis.Yxun <dennis.yxun@gmail.com> wrote:

> HI:
>  I'm encountered pretty much the same problem here
>  I'm tracing with current 3.3-rc4 branch(from ralf's tree)
>  If I put rootfs at nand flash + highmem enabled, then execute problem may
> give
> illegal instruction error, bus error, try it again may run success.
>  but if I don't enable highmem, then problem is gone.
>  any hints? thanks
>
> Dennis
>
>
> On Mon, Nov 28, 2011 at 4:37 PM, Jacky Lam <lamshuyin@gmail.com> wrote:
>
>> Hi,
>>
>>    I am using mips-linux-3.0.4 with HIGHMEM enabled. Everything is
>> working fine, but I find something strange that when I execute a
>> statically-linked binary through NFS mounted directory. It will gives me an
>> illegal instruction error or  SIGSEGV. If I run it again, the binary can
>> run without problem. I have to reboot or drop all the vm cache in order to
>> reproduce the error again.
>>
>>   Also, if I run the binary in harddisk or dynamically link the binary,
>> no problem will be found.
>>
>>    Any suggestion to debug this problem? Thanks.
>>
>> Jacky
>>
>>
>

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