Re: [PATCH v3 17/21] vmcore: check NT_VMCORE_PAD as a mark indicating the end of ELF note buffer
From: Eric W. Biederman
Date: Thu Mar 21 2013 - 20:42:07 EST
HATAYAMA Daisuke <d.hatayama@xxxxxxxxxxxxxx> writes:
> From: Vivek Goyal <vgoyal@xxxxxxxxxx>
> Subject: Re: [PATCH v3 17/21] vmcore: check NT_VMCORE_PAD as a mark indicating the end of ELF note buffer
> Date: Thu, 21 Mar 2013 10:36:56 -0400
>> And in our case we don't know the size of ELF note. Kernel is not
>> exporting the size. So kexec-tools is putting an upper limit of 1024
>> and putting that value in p_memsz and p_filesz fields.
>> Given the fact that we are reserving elf notes at boot. That means
>> we know the size of ELF notes. It should make sense to export it
>> to user space and let kexec-tools put right values.
> Anyway, I think of this issue as beyond the scope of what I'm working
Agreed. It is independent and can be fixed independently.
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