[PATCH v3 17/21] vmcore: check NT_VMCORE_PAD as a mark indicating the end of ELF note buffer

Eric W. Biederman ebiederm at xmission.com
Tue Mar 19 18:20:34 EDT 2013


HATAYAMA Daisuke <d.hatayama at jp.fujitsu.com> writes:

> Modern kernel marks the end of ELF note buffer with NT_VMCORE_PAD type
> note in order to make the buffer satisfy mmap()'s page-size boundary
> requirement. This patch makes finishing reading each buffer if the
> note type now being read is NT_VMCORE_PAD type.

There is absolutely no need for this ABI change.  If you need a wasteful
pad note taking up space (which I see no evicence for) you can still
terminate this with an empty note.

Eric




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