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Add in a check to ensure mappings that ignore errors don't cause errors.

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This commit is contained in:
Mike Auty
2018-12-01 21:33:09 +00:00
parent 5b3a81de05
commit 4703f192e4
1 changed files with 6 additions and 1 deletions
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volatility/framework/layers/intel.py
+6 -1
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@@ -155,6 +155,9 @@ class Intel(interfaces.layers.TranslationLayerInterface):
if length == 0:
try:
mapped_offset, _, layer_name = self._translate(offset)
if not self._context.memory[layer_name].is_valid(mapped_offset):
raise exceptions.InvalidAddressException(layer_name = layer_name,
invalid_address = mapped_offset)
except exceptions.InvalidAddressException:
if not ignore_errors:
raise
@@ -164,6 +167,9 @@ class Intel(interfaces.layers.TranslationLayerInterface):
while length > 0:
try:
chunk_offset, page_size, layer_name = self._translate(offset)
chunk_size = min(page_size - (chunk_offset % page_size), length)
if not self._context.memory[layer_name].is_valid(chunk_offset, chunk_size):
raise exceptions.InvalidAddressException(layer_name = layer_name, invalid_address = chunk_offset)
except (exceptions.PagedInvalidAddressException, exceptions.InvalidAddressException) as excp:
if not ignore_errors:
raise
@@ -176,7 +182,6 @@ class Intel(interfaces.layers.TranslationLayerInterface):
length -= length_diff
offset += length_diff
else:
chunk_size = min(page_size - (chunk_offset % page_size), length)
yield (offset, chunk_offset, chunk_size, layer_name)
length -= chunk_size
offset += chunk_size