grsecurity forums

Posted: **Wed Dec 31, 2014 6:00 am**

Hi,

I have a toolchain with GCC 4.9.1 which is configured with plugin support(--enable-plugin while configuration).
[atulk@localhost linux-3.2.65]$ arm-pokymllibv5te-linux-gnueabi-gcc -v
gcc-4.9.1/configure --build=x86_64-linux --host=i686-pokysdk-linux --target=arm-pokymllibv5te-linux-gnueabi --prefix=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr --exec_prefix=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr --bindir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi --sbindir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi --libexecdir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/libexec/arm-pokymllibv5te-linux-gnueabi --datadir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/share --sysconfdir=/usr/local/windriver/sysroots/i686-pokysdk-linux/etc --sharedstatedir=/usr/local/windriver/sysroots/i686-pokysdk-linux/com --localstatedir=/usr/local/windriver/sysroots/i686-pokysdk-linux/var --libdir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/lib/arm-pokymllibv5te-linux-gnueabi --includedir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/include --oldincludedir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/include --infodir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/share/info --mandir=/usr/local/windriver/sysroots/i686-pokysdk-linux/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/data/home/asingh/poky/build_gcc_plugin/tmp/sysroots/i686-nativesdk-pokysdk-linux --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --enable-multilib --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-pokymllibv5te-linux-gnueabi- --without-local-prefix --enable-plugin --enable-target-optspace --enable-lto --enable-libssp --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=gnu --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --with-gxx-include-dir=/usr/local/windriver/sysroots/armv5te-pokymllibv5te-linux-gnueabi/usr/include/c++/4.9.1 --with-build-time-tools=/data/home/asingh/poky/build_gcc_plugin/tmp/sysroots/x86_64-linux/usr/arm-pokymllibv5te-linux-gnueabi/bin --with-sysroot=/usr/local/windriver/sysroots/armv5te-pokymllibv5te-linux-gnueabi --with-build-sysroot=/data/home/asingh/poky/build_gcc_plugin/tmp/sysroots/libv5te-arm-sdk --enable-poison-system-directories --with-mpfr=/data/home/asingh/poky/build_gcc_plugin/tmp/sysroots/i686-nativesdk-pokysdk-linux --with-mpc=/data/home/asingh/poky/build_gcc_plugin/tmp/sysroots/i686-nativesdk-pokysdk-linux --enable-nls

Also we have verified it using the below mentioned step:
[atulk@localhost linux-3.2.65]$ arm-pokymllibv5te-linux-gnueabi-gcc -print-file-name=plugin
/home/atulk/test/ARM_gcc_plugin/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin
[atulk@localhost linux-3.2.65]$ ll /home/atulk/test/ARM_gcc_plugin/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin
total 932
-rw-r--r--. 1 atulk atulk 948959 Jan 1 00:41 gtype.state
drwxr-xr-x. 8 atulk atulk 4096 Jan 1 00:41 include

And when we use the same toolchain to compile kernel 3.2.65 then we are getting error message as below:
Makefile:635: *** Your gcc installation does not support plugins. If the necessary headers for plugin support are missing, they should be installed. On Debian, apt-get install gcc-<ver>-plugin-dev. If you choose to ignore this error and lessen the improvements provided by this patch, re-run make with the DISABLE_PAX_PLUGINS=y argument.. Stop.

But when we have disable the PAX plugin using the below command:
make ARCH=arm CROSS_COMPILE=arm-pokymllibv5te-linux-gnueabi- DISABLE_PAX_PLUGINS=y

We are getting error message as:
arm-pokymllibv5te-linux-gnueabi-ld: unrecognized option '-Wl,-O1'
arm-pokymllibv5te-linux-gnueabi-ld: use the --help option for usage information
make[1]: *** [init/main.o] Error 1
make: *** [init] Error 2

Please let us know if i am missing something.

Regards,
Atul

Posted: **Wed Dec 31, 2014 10:06 am**

what's your host g++ version? it has to be at least v4.7 as older g++ versions don't support the designated initializer extension at all (which the plugins use).

Posted: **Thu Jan 01, 2015 1:55 am**

The G++ version is:

gcc version 4.8.2 20131017 (Red Hat 4.8.2-1) (GCC)

Also sorry as i missed to mention the about the gr security patch.
I used the patch(grsecurity-3.0-3.2.65-201412280855.patch) for the same.

Posted: **Thu Jan 01, 2015 9:59 am**

can you run sh -x scripts/gcc-plugin.sh $hostg++ $hostg++ $crossgcc (with appropriate substitution for the compiler binaries) and show me the results? my guess is that there're missing compiler headers that you'll have to install by hand from the gcc source tree (you'll see them from the output of the trace).

Posted: **Fri Jan 02, 2015 1:41 am**

PaX Team wrote:can you run sh -x scripts/gcc-plugin.sh $hostg++ $hostg++ $crossgcc (with appropriate substitution for the compiler binaries) and show me the results? my guess is that there're missing compiler headers that you'll have to install by hand from the gcc source tree (you'll see them from the output of the trace).

Code: Select all: [atulk@localhost linux-3.2.65]$ sh -x scripts/gcc-plugin.sh g++ g++ arm-pokymllibv5te-linux-gnueabi-gcc ++ dirname scripts/gcc-plugin.sh + srctree=scripts ++ arm-pokymllibv5te-linux-gnueabi-gcc -print-file-name=plugin + gccplugins_dir=/home/atulk/test/ARM/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin ++ g++ -E - -o /dev/null -Iscripts/../tools/gcc -I/home/atulk/test/ARM/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin/include + plugincc='In file included from /home/atulk/test/ARM/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin/include/gcc-plugin.h:28:0, from /home/atulk/test/ARM/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin/include/plugin.h:23, from scripts/../tools/gcc/gcc-common.h:4, from <stdin>:1: /home/atulk/test/ARM/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin/include/system.h:647:17: fatal error: gmp.h: No such file or directory #include <gmp.h> ^ compilation terminated.' + '[' 1 -ne 0 ']' + exit 1

Posted: **Fri Jan 02, 2015 8:18 am**

so as a first step install the gmp headers then repeat the process and fix whatever else is missing

.

Posted: **Wed Jan 07, 2015 4:16 am**

PaX Team wrote:so as a first step install the gmp headers then repeat the process and fix whatever else is missing .

Thanks for your suggestion.

[atulk@localhost linux-3.2.64]$ sh -x scripts/gcc-plugin.sh g++ g++ $CC
++ dirname scripts/gcc-plugin.sh
+ srctree=scripts
++ arm-pokymllibv5te-linux-gnueabi-gcc -print-file-name=plugin
+ gccplugins_dir=/home/atulk/test/ARM_plugin/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin
++ g++ -E - -o /dev/null -Iscripts/../tools/gcc -I/home/atulk/test/ARM_plugin/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin/include
+ plugincc='<stdin>:3:2: warning: #warning g++ CXX [-Wcpp]'
+ '[' 0 -ne 0 ']'
+ case "$plugincc" in
++ g++ -c -x c++ -std=gnu++98 - -fsyntax-only -Iscripts/../tools/gcc -I/home/atulk/test/ARM_plugin/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/plugin/include
+ plugincc=
+ '[' 0 -eq 0 ']'
+ echo g++
g++
+ exit 0

Now i am getting error as:

Code: Select all: cc1: error: cannot load plugin /home/atulk/test/linux-3.2.64/tools/gcc/colorize_plugin.so /home/atulk/test/linux-3.2.64/tools/gcc/colorize_plugin.so: undefined symbol: _ZN8opt_pass5cloneEv cc1: error: cannot load plugin /home/atulk/test/linux-3.2.64/tools/gcc/structleak_plugin.so /home/atulk/test/linux-3.2.64/tools/gcc/structleak_plugin.so: undefined symbol: _ZN8opt_pass5cloneEv cc1: error: cannot load plugin /home/atulk/test/linux-3.2.64/tools/gcc/latent_entropy_plugin.so /home/atulk/test/linux-3.2.64/tools/gcc/latent_entropy_plugin.so: undefined symbol: _Z24gt_ggc_mx_lang_tree_nodePv cc1: error: cannot load plugin /home/atulk/test/linux-3.2.64/tools/gcc/randomize_layout_plugin.so /home/atulk/test/linux-3.2.64/tools/gcc/randomize_layout_plugin.so: undefined symbol: _ZN8opt_pass5cloneEv make[1]: *** [kernel/bounds.s] Error 1 make: *** [prepare0] Error 2

And the same error i am getting for kernel 3.14.17.

Posted: **Wed Jan 07, 2015 8:29 am**

try make V=1 and show me the exact compiler invocation for bounds.s please. it looks like that the wrong compiler is used there, hence the missing symbols.

Posted: **Fri Jan 09, 2015 1:26 am**

PaX Team wrote:try make V=1 and show me the exact compiler invocation for bounds.s please. it looks like that the wrong compiler is used there, hence the missing symbols.

Code: Select all: arm-pokymllibv5te-linux-gnueabi-gcc -Wp,-MD,kernel/.bounds.s.d -nostdinc -isystem /home/atulk/test/ARM/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../lib/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/include -I/home/atulk/test/linux-3.2.64/arch/arm/include -Iarch/arm/include/generated -Iinclude -include /home/atulk/test/linux-3.2.64/include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Iarch/arm/mach-versatile/include -Iarch/arm/plat-versatile/include -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 --param=allow-store-data-races=0 -marm -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -mabi=aapcs-linux -mno-thumb-interwork -D__LINUX_ARM_ARCH__=5 -march=armv5te -mtune=arm9tdmi -msoft-float -Uarm -Wframe-larger-than=1024 -fno-stack-protector -Wno-unused-but-set-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -DCC_HAVE_ASM_GOTO -fplugin=/home/atulk/test/linux-3.2.64/tools/gcc/colorize_plugin.so -fplugin=/home/atulk/test/linux-3.2.64/tools/gcc/latent_entropy_plugin.so -DLATENT_ENTROPY_PLUGIN -fplugin=/home/atulk/test/linux-3.2.64/tools/gcc/structleak_plugin.so -DSTRUCTLEAK_PLUGIN -fplugin=/home/atulk/test/linux-3.2.64/tools/gcc/randomize_layout_plugin.so -DRANDSTRUCT_PLUGIN -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(bounds)" -D"KBUILD_MODNAME=KBUILD_STR(bounds)" -fverbose-asm -S -o kernel/bounds.s kernel/bounds.c

Posted: **Mon Jan 12, 2015 6:38 pm**

ok, try to copy that line into your shell and add a -v switch to it then execute it by hand. it will print out which cc1 binary is used exactly then you can run readelf on it to see what kind of symbols it has.

now stepping back a bit, i don't understand something. your arm-pokymllibv5te-linux-gnueabi-gcc said that it was configured to have the gcc files installed under /usr/local/windriver/... whereas the reported plugin dir is under /home/atulk/... . how are these two directories related to each other? also how do you exactly invoke make and/or set HOSTCC/HOSTCXX/CC? somehow i have a feeling that different gcc binaries are getting mixed up here...

Posted: **Wed Jan 14, 2015 8:12 am**

PaX Team wrote:ok, try to copy that line into your shell and add a -v switch to it then execute it by hand. it will print out which cc1 binary is used exactly then you can run readelf on it to see what kind of symbols it has.

now stepping back a bit, i don't understand something. your arm-pokymllibv5te-linux-gnueabi-gcc said that it was configured to have the gcc files installed under /usr/local/windriver/... whereas the reported plugin dir is under /home/atulk/... . how are these two directories related to each other? also how do you exactly invoke make and/or set HOSTCC/HOSTCXX/CC? somehow i have a feeling that different gcc binaries are getting mixed up here...

The cc1 used in my case is at /home/atulk/test/ARM_plugin/sysroots/i686-pokysdk-linux/usr/bin/arm-pokymllibv5te-linux-gnueabi/../../libexec/arm-pokymllibv5te-linux-gnueabi/gcc/arm-pokymllibv5te-linux-gnueabi/4.9.1/cc1

With -v option,

GNU C (GCC) version 4.9.1 (arm-pokymllibv5te-linux-gnueabi)

Also if i check using readelf then in the machine type i am seeing

Intel 80386

.

And the /usr/local/windriver is a defualt location of toolchain which we automatically being taken care while running.

Code: Select all: make ARCH=arm CROSS_COMPILE=arm-pokymllibv5te-linux-gnueabi-

Posted: **Wed Jan 14, 2015 8:36 am**

can you run readelf -s on the cc1 binary and post the results somewhere?

Posted: **Tue Jan 20, 2015 7:52 am**

Hi,

I tried posting it using

pastebin.com

, but as it's very big log so i can't succedded out there.

The sample of the same is below:

Code: Select all: Symbol table '.dynsym' contains 257 entries: Num: Value Size Type Bind Vis Ndx Name 0: 00000000 0 NOTYPE LOCAL DEFAULT UND 1: 00000000 0 FUNC GLOBAL DEFAULT UND getpagesize@GLIBC_2.0 (2) 2: 00000000 0 FUNC GLOBAL DEFAULT UND fputs@GLIBC_2.0 (2) 3: 00000000 0 FUNC GLOBAL DEFAULT UND abort@GLIBC_2.0 (2) 4: 00000000 0 FUNC GLOBAL DEFAULT UND __errno_location@GLIBC_2.0 (2) 5: 00000000 0 FUNC GLOBAL DEFAULT UND __gmpz_cmp 6: 00000000 0 FUNC GLOBAL DEFAULT UND sprintf@GLIBC_2.0 (2) 7: 00000000 0 FUNC GLOBAL DEFAULT UND _obstack_memory_used@GLIBC_2.0 (2) 8: 00000000 0 FUNC GLOBAL DEFAULT UND mpc_get_version 9: 00000000 0 FUNC GLOBAL DEFAULT UND popen@GLIBC_2.1 (3) 10: 00000000 0 FUNC GLOBAL DEFAULT UND open@GLIBC_2.0 (2) 11: 00000000 0 FUNC GLOBAL DEFAULT UND zError 12: 00000000 0 FUNC GLOBAL DEFAULT UND mmap@GLIBC_2.0 (2) 13: 00000000 0 FUNC GLOBAL DEFAULT UND getpid@GLIBC_2.0 (2) 14: 00000000 0 FUNC GLOBAL DEFAULT UND strerror@GLIBC_2.0 (2) 15: 00000000 0 FUNC GLOBAL DEFAULT UND setbuf@GLIBC_2.0 (2) 16: 00000000 0 FUNC GLOBAL DEFAULT UND __cxa_atexit@GLIBC_2.1.3 (4) 17: 00000000 0 FUNC GLOBAL DEFAULT UND setrlimit64@GLIBC_2.1 (3) 18: 00000000 0 FUNC GLOBAL DEFAULT UND sysconf@GLIBC_2.0 (2) 19: 00000000 0 FUNC GLOBAL DEFAULT UND memcmp@GLIBC_2.0 (2) 20: 00000000 0 FUNC GLOBAL DEFAULT UND qsort@GLIBC_2.0 (2) 21: 00000000 0 FUNC GLOBAL DEFAULT UND inflateEnd 22: 00000000 0 FUNC GLOBAL DEFAULT UND ngettext@GLIBC_2.2 (5) 23: 00000000 0 FUNC GLOBAL DEFAULT UND open64@GLIBC_2.1 (3) 24: 00000000 0 FUNC GLOBAL DEFAULT UND fputs_unlocked@GLIBC_2.1 (3) 25: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_underflow_p 26: 00000000 0 FUNC GLOBAL DEFAULT UND __gmpz_set_ui 27: 00000000 0 FUNC GLOBAL DEFAULT UND signal@GLIBC_2.0 (2) 28: 00000000 0 FUNC GLOBAL DEFAULT UND __fsetlocking@GLIBC_2.2 (5) 29: 00000000 0 FUNC GLOBAL DEFAULT UND syscall@GLIBC_2.0 (2) 30: 00000000 0 NOTYPE WEAK DEFAULT UND __gmon_start__ 31: 00000000 0 NOTYPE WEAK DEFAULT UND _Jv_RegisterClasses 32: 00000000 0 FUNC GLOBAL DEFAULT UND realloc@GLIBC_2.0 (2) 33: 00000000 0 FUNC GLOBAL DEFAULT UND iconv_open@GLIBC_2.1 (3) 34: 00000000 0 FUNC GLOBAL DEFAULT UND __xstat64@GLIBC_2.2 (5) 35: 00000000 0 FUNC GLOBAL DEFAULT UND localtime@GLIBC_2.0 (2) 36: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_clear 37: 00000000 0 FUNC GLOBAL DEFAULT UND strchr@GLIBC_2.0 (2) 38: 00000000 0 FUNC GLOBAL DEFAULT UND getenv@GLIBC_2.0 (2) 39: 00000000 0 FUNC GLOBAL DEFAULT UND mpc_init2 40: 00000000 0 FUNC GLOBAL DEFAULT UND strncpy@GLIBC_2.0 (2) 41: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_set_erangeflag 42: 00000000 0 FUNC GLOBAL DEFAULT UND putchar@GLIBC_2.0 (2) 43: 00000000 0 FUNC GLOBAL DEFAULT UND deflate 44: 00000000 0 FUNC GLOBAL DEFAULT UND write@GLIBC_2.0 (2) 45: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_lgamma 46: 00000000 0 FUNC GLOBAL DEFAULT UND deflateInit_ 47: 00000000 0 FUNC GLOBAL DEFAULT UND dgettext@GLIBC_2.0 (2) 48: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_sqrt_ui 49: 00000000 0 FUNC GLOBAL DEFAULT UND __uflow@GLIBC_2.0 (2) 50: 00000000 0 FUNC GLOBAL DEFAULT UND memset@GLIBC_2.0 (2) 51: 00000000 0 FUNC GLOBAL DEFAULT UND fopen64@GLIBC_2.1 (3) 52: 00000000 0 FUNC GLOBAL DEFAULT UND __libc_start_main@GLIBC_2.0 (2) 53: 00000000 0 FUNC GLOBAL DEFAULT UND stpcpy@GLIBC_2.0 (2) 54: 00000000 0 FUNC GLOBAL DEFAULT UND _obstack_begin@GLIBC_2.0 (2) 55: 00000000 0 FUNC GLOBAL DEFAULT UND strrchr@GLIBC_2.0 (2) 56: 00000000 0 FUNC GLOBAL DEFAULT UND bindtextdomain@GLIBC_2.0 (2) 57: 00000000 0 FUNC GLOBAL DEFAULT UND madvise@GLIBC_2.0 (2) 58: 00000000 0 FUNC GLOBAL DEFAULT UND __gmpz_add 59: 00000000 0 NOTYPE WEAK DEFAULT UND pthread_once 60: 00000000 0 FUNC GLOBAL DEFAULT UND read@GLIBC_2.0 (2) 61: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_clears 62: 00000000 0 FUNC GLOBAL DEFAULT UND perror@GLIBC_2.0 (2) 63: 00000000 0 NOTYPE WEAK DEFAULT UND _ITM_deregisterTMCloneTab 64: 00000000 0 FUNC GLOBAL DEFAULT UND __gmpz_set 65: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_get_version 66: 00000000 0 FUNC GLOBAL DEFAULT UND getrusage@GLIBC_2.0 (2) 67: 00000000 0 FUNC GLOBAL DEFAULT UND gettext@GLIBC_2.0 (2) 68: 00000000 0 FUNC GLOBAL DEFAULT UND ungetc@GLIBC_2.0 (2) 69: 00000000 0 FUNC GLOBAL DEFAULT UND __gmpz_sizeinbase 70: 00000000 0 FUNC GLOBAL DEFAULT UND gettimeofday@GLIBC_2.0 (2) 71: 00000000 0 FUNC GLOBAL DEFAULT UND inflate 72: 00000000 0 FUNC GLOBAL DEFAULT UND strtol@GLIBC_2.0 (2) 73: 00000000 0 FUNC GLOBAL DEFAULT UND fdopen@GLIBC_2.1 (3) 74: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_set_str 75: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_free_str 76: 00000000 0 FUNC GLOBAL DEFAULT UND _obstack_newchunk@GLIBC_2.0 (2) 77: 00000000 0 FUNC GLOBAL DEFAULT UND __overflow@GLIBC_2.0 (2) 78: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_set_inf 79: 00000000 0 FUNC GLOBAL DEFAULT UND access@GLIBC_2.0 (2) 80: 00000000 0 NOTYPE WEAK DEFAULT UND _ITM_registerTMCloneTable 81: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_sin_cos 82: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_remquo 83: 00000000 0 FUNC GLOBAL DEFAULT UND dlsym@GLIBC_2.0 (6) 84: 00000000 0 FUNC GLOBAL DEFAULT UND sbrk@GLIBC_2.0 (2) 85: 00000000 0 FUNC GLOBAL DEFAULT UND deflateEnd 86: 00000000 0 FUNC GLOBAL DEFAULT UND fflush@GLIBC_2.0 (2) 87: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_inits2 88: 00000000 0 FUNC GLOBAL DEFAULT UND opendir@GLIBC_2.0 (2) 89: 00000000 0 FUNC GLOBAL DEFAULT UND ___tls_get_addr@GLIBC_2.3 (7) 90: 00000000 0 FUNC GLOBAL DEFAULT UND fseek@GLIBC_2.0 (2) 91: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_unlock@GLIBC_2.0 (2) 92: 00000000 0 FUNC GLOBAL DEFAULT UND isatty@GLIBC_2.0 (2) 93: 00000000 0 FUNC GLOBAL DEFAULT UND realpath@GLIBC_2.3 (8) 94: 00000000 0 FUNC GLOBAL DEFAULT UND __gmpz_fdiv_q 95: 00000000 0 FUNC GLOBAL DEFAULT UND strsignal@GLIBC_2.0 (2) 96: 00000000 0 FUNC GLOBAL DEFAULT UND mpfr_get_str 97: 00000000 0 FUNC GLOBAL DEFAULT UND fclose@GLIBC_2.1 (3) 98: 00000000 0 FUNC GLOBAL DEFAULT UND fileno_unlocked@GLIBC_2.0 (2) 99: 00000000 0 FUNC GLOBAL DEFAULT UND mbstowcs@GLIBC_2.0 (2) 100: 00000000 0 FUNC GLOBAL DEFAULT UND fread_unlocked@GLIBC_2.1 (3)

Posted: **Tue Jan 20, 2015 8:39 am**

you can also just email me directly

. what i'd like to see is all the defined symbols basically, whether they're actually c++ mangled names and if so, why those symbols are missing as it's pretty much not possible to compile gcc without them... so i'd like to see what's up with your binaries.

Posted: **Wed Jan 21, 2015 8:53 am**

PaX Team wrote:you can also just email me directly . what i'd like to see is all the defined symbols basically, whether they're actually c++ mangled names and if so, why those symbols are missing as it's pretty much not possible to compile gcc without them... so i'd like to see what's up with your binaries.

Could you please provide me your email-id as i tried sending you through private message but can't do so because it's exceeding character limit.

Regards,
Atul

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