There are core files for pstree command as a result of segfault caused if get_threadname in pstree is called for deleted thread. On the web you can find that this is fixed in 22.22 version. So it is requesting to backport the patch to Wind River if it is possible The link to the patch is here https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815902 and it is officially included as per this links http://psmisc.sourceforge.net/changelog.html https://sourceforge.net/p/psmisc/patches/33/