[Bug dynamic-link/21082] New: loader did not check result when allocating tlsblocks

["ma.jiang at zte dot com.cn" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21082

            Bug ID: 21082
           Summary: loader did not check result when allocating tlsblocks
           Product: glibc
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: dynamic-link
          Assignee: unassigned at sourceware dot org
          Reporter: ma.jiang at zte dot com.cn
  Target Milestone: ---

Created attachment 9771
  --> https://sourceware.org/bugzilla/attachment.cgi?id=9771&action=edit
patch to fix the bug

Hi all,
  I found the dynamic linker did not check the return value when allocating
tlsblocks(csu/libc-tls.c and elf/rtld.c). There are some explanations in
comments, but they failed to convince me. Users will only get a segment-fault
when there are no memory for tlsblocks. They will get confused as there are no
helping message printed.  Moreover, there many similar checks for memory
allocations. So ,why not do the same for tlsblocks?
  I have added a patch to fix the problem(see attachment), it that ok for
trunk?

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