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Joel Brobecker 0e50fe5ca6 gdbserver crash in gdb/gdbserver/thread.c::thread_search_callback
Connecting GDB to a LynxOS-178 GDBserver causes GDBserver to crash:

    % gdbserver :4444 simple_main
    Process simple_main created; pid = 19
    Listening on port 4444
    Remote debugging from host 205.232.38.10
    Segmentation fault (core dumped)

The crash happens in thread_search_callback where the function
calls the_target->thread_stopped (via the thread_stopped macro)
without verifying whether the callback is NULL or not.

For the record, the regression was introduced by:

    commit a67a9faef0
    Date:   Mon Nov 30 16:05:26 2015 +0000
    Subject: gdbserver:prepare_access_memory: pick another thread

This patch avoids the crash by checking the value of the callback
first, before calling it.

gdb/gdbserver/ChangeLog:

        * target.c (thread_search_callback): Add check that
        the thread_stopped target callback is not NULL before
        calling it.
2015-12-22 19:26:17 +04:00
bfd RXv2 support update 2015-12-22 23:26:39 +09:00
binutils Add support for ARM's NOREAD section flag. 2015-12-22 14:12:35 +00:00
config libsanitizer merge from upstream r250806, compiler part. 2015-11-28 16:39:32 +00:00
cpu Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
elfcpp [GOLD] R_PPC64_ENTRY support 2015-12-07 13:17:00 +10:30
etc
gas Fix building pdfs of assembler documentation. 2015-12-21 12:00:04 +00:00
gdb gdbserver crash in gdb/gdbserver/thread.c::thread_search_callback 2015-12-22 19:26:17 +04:00
gold Implement --long-plt flag (ARM only). 2015-12-17 16:52:12 -08:00
gprof Bump version to 2.26.51 2015-11-14 16:24:39 -08:00
include Add support for ARM's NOREAD section flag. 2015-12-22 14:12:35 +00:00
intl Regen intl/configure 2015-08-31 12:53:36 +09:30
ld Add support for ARM's NOREAD section flag. 2015-12-22 14:12:35 +00:00
libdecnumber Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
libiberty PR other/61321 - demangler crash on casts in template parameters 2015-11-28 16:39:31 +00:00
opcodes RXv2 support update 2015-12-22 23:26:39 +09:00
readline Revert "Sync readline/ to version 7.0 alpha" 2015-07-25 15:57:00 -04:00
sim Fix invalid left shift of negative value 2015-12-15 14:09:14 +01:00
texinfo
zlib Import zlib 1.2.8 with local change merged in. 2015-11-25 15:14:47 -08:00
.cvsignore
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ChangeLog binutils: add support for arm-*-darwin and aarch64-*-darwin. 2015-11-20 14:53:06 +01:00
compile
config-ml.in Sync toplevel files with GCC 2015-07-27 07:49:05 -07:00
config.guess Sync config.sub and config.guess with GCC 2015-08-07 07:51:39 -07:00
config.rpath
config.sub Sync config.sub and config.guess with GCC 2015-08-07 07:51:39 -07:00
configure binutils: add support for arm-*-darwin and aarch64-*-darwin. 2015-11-20 14:53:06 +01:00
configure.ac binutils: add support for arm-*-darwin and aarch64-*-darwin. 2015-11-20 14:53:06 +01:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def Resync files in the binutils repository that are maintained in the gcc repository. 2015-09-30 17:55:16 +01:00
Makefile.in Resync files in the binutils repository that are maintained in the gcc repository. 2015-09-30 17:55:16 +01:00
Makefile.tpl Sync Makefile.tpl with GCC 2015-07-14 09:52:36 -07:00
makefile.vms
missing
mkdep
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move-if-change
README
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setup.com
src-release.sh Adjust src-release.sh for sim using the gdb create-version.sh. 2015-04-15 04:08:51 +02:00
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		   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.