Binutils with MCST patches
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Daniel Colascione 015de6884f Warn users about mismatched PID namespaces
Linux supports multiple "PID namespaces".  Processes in different PID
namespaces have different views of the system process list.  Sometimes,
a single process can appear in more than one PID namespace, but with a
different PID in each.  When GDB and its target are in different PID
namespaces, various features can break due to the mismatch between
what the target believes its PID to be and what GDB believes its PID
to be.  The most visible broken functionality is thread enumeration
silently failing.

This patch explicitly warns users against trying to debug across PID
namespaces.

The patch introduced no new failures in my test suite run on an x86_64
installation of Ubuntu 14.10.  It doesn't include a test: writing an
automated test that exercises this code would be very involved because
CLONE_NEWNS requires CAP_SYS_ADMIN; the easier way to reproduce the
problem is to start a new lxc container.

gdb/
2014-11-11  Daniel Colascione  <dancol@dancol.org>

	Warn about cross-PID-namespace debugging.
	* nat/linux-procfs.h (linux_proc_pid_get_ns): New prototype.
	* nat/linux-procfs.c (linux_proc_pid_get_ns): New function.
	* linux-thread-db.c (check_pid_namespace_match): New function.
	(thread_db_inferior_created): Call it.
2014-11-11 14:18:23 +00:00
bfd coff coff 2014-11-11 22:45:25 +10:30
binutils More fixes for assertion failures and out-of-bounds reads by readelf. 2014-11-10 16:32:32 +00:00
config
cpu
elfcpp
etc
gas Fix a typo in gas/ChangeLog 2014-11-07 17:47:54 -08:00
gdb Warn users about mismatched PID namespaces 2014-11-11 14:18:23 +00:00
gold Fix race condition when using --threads with linker plugins. 2014-11-07 16:12:58 -08:00
gprof Import updated translations supplied by the Translation Project. 2014-11-03 12:26:48 +00:00
include Add mach parameter to nios2_find_opcode_hash. 2014-11-06 13:12:21 -08:00
intl
ld X32: Add REX prefix to encode R_X86_64_GOTTPOFF 2014-11-07 12:22:53 -08:00
libdecnumber
libiberty Fix gnu11 fallout on Solaris 10+ 2014-11-05 15:07:38 +01:00
opcodes Add mach parameter to nios2_find_opcode_hash. 2014-11-06 13:12:21 -08:00
readline
sim
texinfo
.cvsignore
.gitattributes
.gitignore
COPYING
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
COPYING3
COPYING3.LIB
ChangeLog src-release.sh: configure using --target. 2014-10-15 09:50:53 +02:00
MAINTAINERS Update description of ownership of files in include/ 2014-11-04 16:14:14 -08:00
Makefile.def
Makefile.in
Makefile.tpl
README
README-maintainer-mode
compile
config-ml.in
config.guess
config.rpath
config.sub
configure Add aarch64 to list of targets that support gold. 2014-10-03 14:48:14 -07:00
configure.ac Add aarch64 to list of targets that support gold. 2014-10-03 14:48:14 -07:00
depcomp
djunpack.bat
install-sh
libtool.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
setup.com
src-release.sh src-release.sh: configure using --target. 2014-10-15 09:50:53 +02:00
symlink-tree
ylwrap

README

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.