DO NOT REPLY [Bug 17500] New: - Memory Leak from use of initgroups()

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=17500

Memory Leak from use of initgroups()

           Summary: Memory Leak from use of initgroups()
           Product: Apache httpd-2.0
           Version: 2.0.44
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: Minor
          Priority: Other
         Component: All
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: sherod@pillardata.com


Hello, 
 
This is really a libc bug, but since it gets called often in the worker  
module,  I thought I would pass it on.  
  
I am seeing a 192 byte memory leak when running agaist libc-2.2.5 on Linux  
(RedHat 7.3 to be exact) whenever initgroups() is called.  This happens in  
mod_worker whenever a connection is made.  I'll also send off a note to the  
libc maintainers.  As a side note, the comment in support/suexec.c starting at  
line 97 is no longer true with QNX 6.2.   initgroups() is supported and in  
fact does not leak.  
  
The path to the leak is below and I've also checked it with a tight loop 
running while(true).  
  
==29174== 192 bytes in 2 blocks are definitely lost in loss record 60 of 70  
==29174==    at 0x40044851: calloc (vg_clientfuncs.c:239)  
==29174==    by 0x41598A5A: __yp_bind (in /lib/libnsl-2.2.5.so)  
==29174==    by 0x415996A0: yp_all (in /lib/libnsl-2.2.5.so)  
==29174==    by 0x41FFC8CD: _nss_nis_initgroups_dyn (in  
/lib/libnss_nis-2.2.5.so)  
==29174==    by 0x420B24EE: (within /lib/i686/libc-2.2.5.so)  
==29174==    by 0x420B26C8: (within /lib/i686/libc-2.2.5.so)  
==29174==    by 0x806FF17: set_group_privs (unixd.c:142)  
==29174==    by 0x806FF66: unixd_setup_child (unixd.c:156)  
==29174==    by 0x8058D6D: child_main (worker.c:1210)  
==29174==    by 0x8059057: make_child (worker.c:1393)  
==29174==    by 0x80593FA: perform_idle_server_maintenance (worker.c:1551)  
==29174==    by 0x80595D5: server_main_loop (worker.c:1646)  
==29174==    by 0x8059824: ap_mpm_run (worker.c:1745)  
==29174==    by 0x805F1C7: main (main.c:651)  
 
Scott

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