On 2015-06-23 18:44, Hanno Böck wrote:
The elfutils webpage says:
"To report bugs: please open a bugzilla report against the elfutils
However it seems the redhat bugzilla doesn't have an elfutils
component. Therefore I'm reporting it here, hope that's okay.
IIRC, to find elfutils, you have to choose Fedora as a product in bugzilla.
The attached file will cause a huge malloc allocation with
tool. This will crash if you try to run it with address sanitizer.
The reason is likely that nm will try to allocate space for something
based on the header value - no matter if that value makes any sense. A
sanity check that checks in such cases if the file itself is smaller
than the supposedly allocated memory could avoid that.
I've reported several similar issues before. Mark replied:
"I believe the "Argument 'size' of function malloc has a fishy (possibly
negative) value" in dwarf_begin_elf.c (check_section) is correct, but
harmless. We do check the value doesn't actually overflow, the
allocation will likely fail, but that is also checked."
Specifically about nm --