[Bug malloc/21754] New: malloc: Perform as little work as possible after heap consistency check failures

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21754

            Bug ID: 21754
           Summary: malloc: Perform as little work as possible after heap
                    consistency check failures
           Product: glibc
           Version: 2.26
            Status: NEW
          Severity: normal
          Priority: P2
         Component: malloc
          Assignee: unassigned at sourceware dot org
          Reporter: fweimer at redhat dot com
  Target Milestone: ---

We currently perform a backtrace, flush stdio buffers (via abort), do string
processing, and so on.  There appear to be exploitation techniques which abuse
the current behavior.

This will allow us to remove the corrupted arena handling code.  It is
reportedly buggy.

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