[Bug libc/3924] New: LD_AUDIT implementation causing process segfaulting

["olsajiri at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

There's a bug in the sysdeps/i386/dl-trampoline.S _dl_runtime_profile function
making process segfaulting. Under some conditions the 'edi' and 'esi' registers
are restored to wrong values. IMHO this could be fixed like this:

Index: sysdeps/i386/dl-trampoline.S
===================================================================
RCS file: /cvs/glibc/libc/sysdeps/i386/dl-trampoline.S,v
retrieving revision 1.2
diff -r1.2 dl-trampoline.S
116d115
<       andl $0xfffffff0, %edi  # Align stack

edi and esi registers are pushed on stack before it is alligned. In case it is
really aligned those register wont be restored properly. I tried the fix and it
is working for me. I dont know the reason for alligning the stack here, so
hopefully I'm not missing something... :)

I'm running the 2.4 version, but seems it is an issue in current sources as well.

regards
Jiri Olsa

-- 
           Summary: LD_AUDIT implementation causing process segfaulting
           Product: glibc
           Version: 2.4
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: olsajiri at gmail dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3924

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