RE: PAE causing failure to run various executables.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



>-----Original Message-----
>From: [email protected] 
>[mailto:[email protected]] On Behalf Of avi
>Sent: Wednesday, October 05, 2005 2:32 PM
>To: Dave Jones
>Cc: [email protected]
>Subject: Re: PAE causing failure to run various executables.
>
>Dave Jones wrote:
>
>>A fedora user recently filed a puzzling bug at
>>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169741
>>
>>The system being reported has exactly 4GB, and its E820
>>tables seem to concur that there is in fact 4GB.
>>
>>When run in non-PAE mode, it triggers the
>>"Warning only 4GB will be used. Use a PAE enabled kernel."
>>message, which is odd, but the system does actually run.
>>
>>When run in PAE mode, it seems to lose its mind, and it
>>fails to run various binaries.
>>
>>Booting with mem=4G causes the machine to boot fine
>>(though for some reason, it finds only 3042M of RAM).
>>
>>  
>>
>looks like a 1GB hole.

Yes. E820 map here indeed shows 1GB of memory at higher than 32 bits
range.


>
>>The reporter of this bug has tested on 2.6.14-rc3-git4, and found the
>>same issue exists as he saw on the original FC3 kernel, thus 
>ruling out
>>any Fedora-specific patches.
>>
>>Anyone have any ideas what's wrong here?
>>
>>		
>>
>maybe the last 1GB is bad. since it can only be accessed by pae, only 
>the pae kernel fails.
>

Another possible reason can be NX(Execute Disable) support, which is 
active only on a PAE kernel. Trying "noexec=off" on a PAE kernel can be
tried here.

Thanks,
Venki
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux