[makedumpfile PATCH v2] Wipe excluded pages that are written into ELF dump file

Eric DeVolder eric.devolder at oracle.com
Mon Jan 29 08:06:53 PST 2018


On 01/28/2018 10:51 PM, Atsushi Kumagai wrote:
> Hello Eric,
> 
>> On 08/07/2017 07:25 PM, Atsushi Kumagai wrote:
>>> Hello Eric,
>>>
>>> Thanks for your work, this version looks good to me.
>>> I'll merge this into v1.6.3.
>>>
>>> Regards,
>>> Atsushi Kumagai
>>
>> Thank you!
>> eric
> 
> I noticed that wiping zero pages seems to cause different behavior
> of crash like:
> 
> [kmem -i]
> -    SWAP USED        1         4 KB    0% of TOTAL SWAP
> -    SWAP FREE   489979       1.9 GB   99% of TOTAL SWAP
> +    SWAP USED   229886       898 MB   46% of TOTAL SWAP  // wiped page is counted as SWAP USED ?
> +    SWAP FREE   260094      1016 MB   53% of TOTAL SWAP
> 
> I don't investigate the details yet, but I decided to slip this
> feature to v1.6.4.
> 
> Thanks,
> Atsushi Kumagai

OK, I'll also look into it. Thanks for letting me know!
eric

> 
> 
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