39243fe306
The library does not weed out potential duplicate PID values when sampling with the PROC_PID flag. This was treated as merely an inefficiency by top and safely ignored prior to the advent of forest view mode. Now, however, if the -p switch duplicates certain PIDs, *and* those processes have no PPID, *and* top's forest view mode is active or activated, then a SEGV will be generated (and caught). This rather obscure buglet is thus limited to pid #1 (/sbin/init) and pid #2 (kthreadd). With any other duplicate PIDs the worse case scenario was a '?' in place of the usual forest view artwork. This commit silently ignores any duplicate process ids and thereby avoids the potential segmemtation fault. Signed-off-by: Jim Warner <james.warner@comcast.net>
COMPATIBILITY
This code is intended for use with Linux 2.6.xx, 3.x and
hopefully all future kernels.
INSTALLATION
If you are using git version of the project you need extra step.
./autogen.sh
After that, and everyone using .tar.xz version of procps-ng, can
do normal build. Read './configure --help' to select options for
your needs.
./configure
make
make install
If you have DejaGNU installed you can run optional test suite.
make check
HOW TO CONTRIBUTE
See Documentation/BUGS file.
PACKAGING
If you are a downstream maintainer (packager) for a Linux
distribution, please avoid causing troubles. This section
applies to you.
Avoid maintaining distribution specific patches. Send your
patches to upstream, where they are at least reviewed, if not
included.
Please forward bug reports. If your bug database is public and
busy enough to bother with, please make this known. Follow
Debian's lead in making the bug database easy to comment on via
email without need for an account.
For normal packages, ensure that you do not add debugging flags
to the CFLAGS variable.
UPSTREAM & BUG REPORTS
procps-ng <procps@freelists.org>