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[Bug libc/15233] New: crash in tzset


http://sourceware.org/bugzilla/show_bug.cgi?id=15233

             Bug #: 15233
           Summary: crash in tzset
           Product: glibc
           Version: 2.8
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: unassigned@sourceware.org
        ReportedBy: nit_bng@yahoo.com
                CC: drepper.fsp@gmail.com
    Classification: Unclassified


Hi,
We are using glibc v2.8 and seeing the crash intermittently in tzset() being
called by strftime(). I searched on google and found many similar issues
(http://www.archivum.info/kde-bugs-dist@kde.org/2010-06/08363/%28Bug-210769%29-Plasma-random-crash-%28time-dataengine%29-%28libc-related-tzset-KSystemTimeZoneBackend-offset-KSystemTimeZoneBackend.html).

Out of these, many are closed as non-reproducible and other mentioning that it
is not observed after upgrading the glibc to 2.11. But none of them have
mentioned the root cause or fix of it.

Do we have more information on this (root cause and the fix)? Following is the
stack trace:

Stack Trace:
(signal 11 = Access of a NULL pointer or bad memeory location)
#0  0x00000035ca675218 in ?? () from ./lib64/libc.so.6
#1  0x00000035ca675726 in free () from ./lib64/libc.so.6
#2  0x00000035ca6646c1 in fclose () from ./lib64/libc.so.6
#3  0x00000035ca6914b2 in ?? () from ./lib64/libc.so.6
#4  0x00000035ca690640 in ?? () from ./lib64/libc.so.6
#5  0x00000035ca690970 in tzset () from ./lib64/libc.so.6
#6  0x00000035ca696405 in ?? () from ./lib64/libc.so.6
#7  0x00000035ca6ca0de in __vsyslog_chk () from ./lib64/libc.so.6
#8  0x00000035ca6ca700 in syslog () from ./lib64/libc.so.6

thanks

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