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[Bug dynamic-link/14133] New: SEGV in dlopen


http://sourceware.org/bugzilla/show_bug.cgi?id=14133

             Bug #: 14133
           Summary: SEGV in dlopen
           Product: glibc
           Version: 2.15
            Status: NEW
          Severity: critical
          Priority: P2
         Component: dynamic-link
        AssignedTo: unassigned@sourceware.org
        ReportedBy: Marc-Antoine@Perennou.com
    Classification: Unclassified


Hi,

I recently hit a SEGV in dlopen after upgrading to glibc 2.15

the stack looked like this

#0  0x0000000000005486 in ?? ()
#1  0x00007ffff7113685 in floor () from /usr/lib64/libm.so.6
#2  0x00007ffff7de6f76 in _dl_relocate_object () from
/lib64/ld-linux-x86-64.so.2
#3  0x00007ffff7dee0e3 in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
#4  0x00007ffff7de97a6 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#5  0x00007ffff7deda91 in _dl_open () from /lib64/ld-linux-x86-64.so.2
#6  0x00007ffff75f9fe6 in dlopen_doit () from /usr/lib64/libdl.so.2
#7  0x00007ffff7de97a6 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#8  0x00007ffff75fa62c in _dlerror_run () from /usr/lib64/libdl.so.2
#9  0x00007ffff75fa088 in dlopen@@GLIBC_2.2.5 () from /usr/lib64/libdl.so.2
#10 0x00007ffff7fd588e in g_module_open () from /usr/lib64/libgmodule-2.0.so.0
#11 0x0000000000400f00 in query_module ()
#12 0x00000000004014da in main ()

After some researches I found out this commit :

http://sourceware.org/git/?p=glibc.git&a=patch&h=6ee65ed6ddbf04402fad0bec6aa9c73b9d982ae4

Backporting it fixed the issue, so it should be a good idea to backport it for
2.15.1

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