dump: clamp guest-provided mapping lengths to ramblock sizes
Even a trusted & clean-state guest can map more memory than what it was given. Since the vmcore contains RAMBlocks, mapping sizes should be clamped to RAMBlock sizes. Otherwise such oversized mappings can exceed the entire file size, and ELF parsers might refuse even the valid portion of the PT_LOAD entry. Related RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=981582Signed-off-by: NLaszlo Ersek <lersek@redhat.com> Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
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