Patrick-Dussault

Tech Tip : CA Single Sign-On : Serious regression smwa-12.52-sp01-cr08-linux-x86-64

Discussion created by Patrick-Dussault Employee on Apr 27, 2018

Issue:


Running Web Agent, this one crashes with the following stack :

[12/fevr./2018:15:41:21] [Info] [CA WebAgent IPC] [26882]
[CSmSharedSegment::smalloc] Attached to shared memory segment
15761417 using key 0x6947862b

*** Error in `/usr/local/apache2/bin/httpd': double free or corruption (fasttop): 0x00007ff45800f9b0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x7c619)[0x7ff49ce75619]
/lib64/libstdc++.so.6(_ZNSsD1Ev+0x43)[0x7ff49a408e43]
/opt/CA/webagent/bin/libmod_sm24.so(+0x1bcc9)[0x7ff49c6d6cc9]
/opt/CA/webagent/bin/libmod_sm24.so(+0x1b453)[0x7ff49c6d6453]
/opt/CA/webagent/bin/libmod_sm24.so(+0x1ae61)[0x7ff49c6d5e61]
/opt/CA/webagent/bin/libmod_sm24.so(+0x16a0e)[0x7ff49c6d1a0e]
/usr/local/apache2/bin/httpd(ap_run_access_checker+0x61)[0x44f7c7]
/usr/local/apache2/bin/httpd(ap_process_request_internal+0x579)[0x4509b3]
/usr/local/apache2/bin/httpd(ap_process_async_request+0x6f7)[0x47b518]
/usr/local/apache2/bin/httpd(ap_process_request+0x24)[0x47b5eb]
/usr/local/apache2/bin/httpd[0x476fc2]
/usr/local/apache2/bin/httpd[0x4770ce]
/usr/local/apache2/bin/httpd(ap_run_process_connection+0x61)[0x46b67e]
/usr/local/apache2/bin/httpd(ap_process_connection+0x66)[0x46bd18]
/usr/local/apache2/bin/httpd[0x4854da]
/usr/local/apache2/bin/httpd[0x4862f2]
/lib64/libpthread.so.0(+0x7e25)[0x7ff49d3c7e25]
/lib64/libc.so.6(clone+0x6d)[0x7ff49cef134d]
======= Memory map: ========

[Mon Feb 12 15:41:22.259579 2018] [core:notice] [pid 26864:tid
140008323442816] AH00052: child pid 26882 exit signal Aborted (6)

 

Environment:

 

Web Agent 12.52SP1CR08 64bit on Apache 2.4.29 64bit on RedHat 6;

 

Cause:

 

The code was allowing a null pointer exception where the code is trying to clear a list which was empty. The fix will be available to Web Agent 12.52SP1CR09

 

Resolution:

 

Upgrade the Web Agent to 12.52SP1CR09 when it will be available.

 

 

KB : KB000092947

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