Go to file
Yao Qi ef9bd0b8d7 Fix bug in arm_push_dummy_call by -fsanitize=address
When I build GDB with -fsanitize=address, and run testsuite,
some gdb.base/*.exp test triggers the ERROR below,

=================================================================
==7646==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000242810 at pc 0x487844 bp 0x7fffe32e84e0 sp 0x7fffe32e84d8
READ of size 4 at 0x603000242810 thread T0
    #0 0x487843 in push_stack_item /home/yao/SourceCode/gnu/gdb/git/gdb/arm-tdep.c:3405
    #1 0x48998a in arm_push_dummy_call /home/yao/SourceCode/gnu/gdb/git/gdb/arm-tdep.c:3960

In that path, GDB passes value on stack, in an INT_REGISTER_SIZE slot,
but the value contents' length can be less than INT_REGISTER_SIZE, so
the contents will be accessed out of the bound.  This patch adds an
array buf[INT_REGISTER_SIZE], and copy val to buf before writing them
to stack.

gdb:

2015-11-16  Yao Qi  <yao.qi@linaro.org>

	* arm-tdep.c (arm_push_dummy_call): New array buf.  Store regval
	to buf.  Pass buf instead of val to push_stack_item.
2015-11-16 14:44:19 +00:00
bfd Automatic date update in version.in 2015-11-16 00:00:08 +00:00
binutils Bump version to 2.26.51 2015-11-14 16:24:39 -08:00
config
cpu
elfcpp Add assembler, disassembler and linker support for power9. 2015-11-11 19:52:52 -06:00
etc
gas Bump version to 2.26.51 2015-11-14 16:24:39 -08:00
gdb Fix bug in arm_push_dummy_call by -fsanitize=address 2015-11-16 14:44:19 +00:00
gold Fix problem where bss symbols for copy relocations are marked local. 2015-11-14 11:04:01 -08:00
gprof Bump version to 2.26.51 2015-11-14 16:24:39 -08:00
include sim: cr16: convert to common sim memory modules 2015-11-15 21:48:06 -05:00
intl
ld Fixes an invalid warning about memory region overflow on the ARM. 2015-11-16 14:21:28 +00:00
libdecnumber
libiberty Configury changes for obstack optimization 2015-11-09 15:21:50 +10:30
opcodes Bump version to 2.26.51 2015-11-14 16:24:39 -08:00
readline
sim sim: sim-stop/sim-reason/sim-reg: move to common obj list 2015-11-16 00:41:59 -05:00
texinfo
zlib
.cvsignore
.gitattributes
.gitignore
ChangeLog
compile
config-ml.in
config.guess
config.rpath
config.sub
configure
configure.ac
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
Makefile.in
Makefile.tpl
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
README
README-maintainer-mode
setup.com
src-release.sh
symlink-tree
ylwrap

		   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.