CHECK fails on linux and program doesn't launch #27

ramosian-glider · 2015-08-31T14:14:02Z

Originally reported on Google Code with ID 27

What steps will reproduce the problem?
1. Compile with -faddress-sanitizer
2. Launch program

What is the expected output? What do you see instead?

Program launching and displaying some information instead I get the check fails.


What version of the product are you using? On what operating system?

/tmp/toto❯  uname -a
Linux host 2.6.32-5-amd64 #1 SMP Wed Jan 12 03:40:32 UTC 2011 x86_64 GNU/Linux
/tmp/toto❯  clangg --version
clang version 3.1 (trunk 148107)
Target: x86_64-unknown-linux-gnu
Thread model: posix

Please provide any additional information below.

/tmp/toto❯ /projects/bin/tool
==30618== CHECK failed: (uintptr_t)&rl >= start && (uintptr_t)&rl < end at asan_linux.cc:248
    #0 0x84007b3 (tool+0x84007b3)
Stats: 0M malloced (0M for red zones) by 0 calls
Stats: 0M realloced by 0 calls
Stats: 0M freed by 0 calls
Stats: 0M really freed by 0 calls
Stats: 0M (0 full pages) mmaped in 0 calls
  mmaps   by size class: 
  mallocs by size class: 
  frees   by size class:



A simple test works :

/tmp/toto❯ clangg -g -c simple_main.c; clangg -g -o simple_main simple_main.o
clang: warning: argument unused during compilation: '-mllvm -asan-stack=1'
/tmp/toto❯ ./simple_main 
Do nothing except alloc & dealloc
Display test TEST
/tmp/toto❯ cat simple_main.c 
#include "stdio.h"
#include "stdlib.h"
#include "string.h"

int main(int argc, char const *argv[])
{
    printf("Do nothing except alloc & dealloc\n");
    char *test = calloc(30, sizeof (char));
    strncpy(test, "TEST", 30);
    printf("Display test %s\n", test);

    free(test);
    return 0;
}

Reported by mkvtoolnix.build.jonthn on 2012-01-15 19:20:58

The text was updated successfully, but these errors were encountered:

ramosian-glider · 2015-08-31T14:14:09Z

Can you please provide the output of the failing program with ASAN_OPTIONS="verbosity=2"?
Also, is your source code or any reduced test available publicly?

Reported by ramosian.glider on 2012-01-15 19:24:11

ramosian-glider · 2015-08-31T14:14:17Z

The source code is not available publicly, but I will post tomorrow the verbose version
output.

I'll also try to reduce the code and see if I get the same behavior, if that's the
case I'll also post it somewhere.

Reported by mkvtoolnix.build.jonthn on 2012-01-15 20:47:48

ramosian-glider · 2015-08-31T14:14:24Z

Below the output with verbose output. Also I updated to the latest source (rev 148230)

ASAN_OPTIONS="verbosity=2" tool 2>&1 | asan_symbolize.py
AddressSanitizer: libc interceptors initialized
|| `[0x40000000, 0xffffffff]` || HighMem    ||
|| `[0x28000000, 0x3fffffff]` || HighShadow ||
|| `[0x24000000, 0x27ffffff]` || ShadowGap  ||
|| `[0x20000000, 0x23ffffff]` || LowShadow  ||
|| `[0x00000000, 0x1fffffff]` || LowMem     ||
MemToShadow(shadow): 0x24000000 0x247fffff 0x25000000 0x27ffffff
red_zone=128
malloc_context_size=30
fast_unwind=1
SHADOW_SCALE: 3
SHADOW_GRANULARITY: 8
SHADOW_OFFSET: 20000000
==12047== SetCurrent: 0x09df5d08 for thread 0xf254d950
==12047== CHECK failed: (uintptr_t)&rl >= start && (uintptr_t)&rl < end at asan_linux.cc:276
    #0 0x8942f63 in _ZN6__asan11CheckFailedEPKcS1_i _asan_rtl_
Stats: 0M malloced (0M for red zones) by 0 calls
Stats: 0M realloced by 0 calls
Stats: 0M freed by 0 calls
Stats: 0M really freed by 0 calls
Stats: 0M (0 full pages) mmaped in 0 calls
  mmaps   by size class:
  mallocs by size class:
  frees   by size class:
  rfrees  by size class:
Stats: malloc large: 0 small slow: 0

Reported by mkvtoolnix.build.jonthn on 2012-01-16 08:42:37

ramosian-glider · 2015-08-31T14:14:32Z

I wasn't able to produce a reduced version. But in the same time I noticed that even
when my main program was doing nothing I still get the CHECK failed and when I stopped
linking it to shared libraries it worked.
I then made a test library with a test program but I couldn't replicate the same behavior.

Currently my program is linked to 65 libraries and only a few ( less than 10 ) are
from my own sources.

Reported by mkvtoolnix.build.jonthn on 2012-01-16 11:27:56

ramosian-glider · 2015-08-31T14:14:40Z

If you're ok with editing the sources, try to open llvm/projects/compiler-rt/lib/asan/asan_linux.cc
and dump every interesting bit of information from AsanThread::SetThreadStackTopAndBottom,
e.g.:


261 void AsanThread::SetThreadStackTopAndBottom() {
262   if (tid() == 0) {
263     // This is the main thread. Libpthread may not be initialized yet.
264     struct rlimit rl;
265     CHECK(getrlimit(RLIMIT_STACK, &rl) == 0);
266     Report("RLIMIT_STACK: &rl=%p, rlim_cur=%d, rlim_max=%d\n", &rl, rl.rlim_cur,
rl.rlim_max);
267     
268     // Find the mapping that contains a stack variable.
269     AsanProcMaps proc_maps;
270     uintptr_t start, end, offset;
271     uintptr_t prev_end = 0;
272     while (proc_maps.Next(&start, &end, &offset, NULL, 0)) {
273       Report("/proc/self/maps: start=%p, end=%p, offset=%p\n", start, end, offset);
274       if ((uintptr_t)&rl < end)
275         break; 
276       prev_end = end;
277     }
278     Report("CHECK: &rl=%p, start=%p, end=%p\n", &rl, start, end);
279     CHECK((uintptr_t)&rl >= start && (uintptr_t)&rl < end);
280

Reported by [email protected] on 2012-01-16 11:42:51

ramosian-glider · 2015-08-31T14:14:48Z

Then rebuild the runtime library (see http://code.google.com/p/address-sanitizer/wiki/HowToBuild)
and relink your program (it's ok to just delete the executables, no need to recompile
everything from scratch)

Reported by [email protected] on 2012-01-16 11:44:09

ramosian-glider · 2015-08-31T14:14:55Z

Or you could grab the value of &rl in a debugger, and dump /proc/self/maps at the same
time - that would also help.

Reported by [email protected] on 2012-01-16 11:51:06

ramosian-glider · 2015-08-31T14:15:03Z

Ok here is the output using the patch above applied to the source r148236 :

==3517== RLIMIT_STACK: &rl=0xffffccd4, rlim_cur=8388608, rlim_max=-1
==3517== /proc/self/maps: start=0x08048000, end=0x08445000, offset=0x00000000
==3517== /proc/self/maps: start=0x08445000, end=0x0844e000, offset=0x003fc000
==3517== /proc/self/maps: start=0x0844e000, end=0x09474000, offset=0x00000000
==3517== /proc/self/maps: start=0x1ffff000, end=0x24000000, offset=0x00000000
==3517== /proc/self/maps: start=0x24000000, end=0x28000000, offset=0x00000000
==3517== /proc/self/maps: start=0x28000000, end=0x40000000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4195000, end=0xf4199000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4199000, end=0xf419c000, offset=0x00000000
==3517== /proc/self/maps: start=0xf419c000, end=0xf419d000, offset=0x00002000
==3517== /proc/self/maps: start=0xf419d000, end=0xf420e000, offset=0x00000000
==3517== /proc/self/maps: start=0xf420e000, end=0xf4211000, offset=0x00070000
==3517== /proc/self/maps: start=0xf4211000, end=0xf4220000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4220000, end=0xf4221000, offset=0x0000e000
==3517== /proc/self/maps: start=0xf4221000, end=0xf4222000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4222000, end=0xf4224000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4224000, end=0xf4225000, offset=0x00001000
==3517== /proc/self/maps: start=0xf4225000, end=0xf422b000, offset=0x00000000
==3517== /proc/self/maps: start=0xf422b000, end=0xf422c000, offset=0x00005000
==3517== /proc/self/maps: start=0xf422c000, end=0xf42c0000, offset=0x00000000
==3517== /proc/self/maps: start=0xf42c0000, end=0xf42c4000, offset=0x00094000
==3517== /proc/self/maps: start=0xf42c4000, end=0xf42da000, offset=0x00000000
==3517== /proc/self/maps: start=0xf42da000, end=0xf42db000, offset=0x00015000
==3517== /proc/self/maps: start=0xf42db000, end=0xf42eb000, offset=0x00000000
==3517== /proc/self/maps: start=0xf42eb000, end=0xf42ec000, offset=0x00010000
==3517== /proc/self/maps: start=0xf42ec000, end=0xf42ed000, offset=0x00011000
==3517== /proc/self/maps: start=0xf42ed000, end=0xf42f0000, offset=0x00000000
==3517== /proc/self/maps: start=0xf42f0000, end=0xf42fb000, offset=0x00000000
==3517== /proc/self/maps: start=0xf42fb000, end=0xf42fc000, offset=0x0000a000
==3517== /proc/self/maps: start=0xf42fc000, end=0xf4300000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4300000, end=0xf4301000, offset=0x00003000
==3517== /proc/self/maps: start=0xf4301000, end=0xf4303000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4303000, end=0xf4304000, offset=0x00001000
==3517== /proc/self/maps: start=0xf4304000, end=0xf4375000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4375000, end=0xf437a000, offset=0x00071000
==3517== /proc/self/maps: start=0xf437a000, end=0xf438d000, offset=0x00000000
==3517== /proc/self/maps: start=0xf438d000, end=0xf438e000, offset=0x00013000
==3517== /proc/self/maps: start=0xf438e000, end=0xf438f000, offset=0x00000000
==3517== /proc/self/maps: start=0xf438f000, end=0xf4391000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4391000, end=0xf4392000, offset=0x00001000
==3517== /proc/self/maps: start=0xf4392000, end=0xf43b4000, offset=0x00000000
==3517== /proc/self/maps: start=0xf43b4000, end=0xf43b5000, offset=0x00022000
==3517== /proc/self/maps: start=0xf43b5000, end=0xf4461000, offset=0x00000000
==3517== /proc/self/maps: start=0xf4461000, end=0xf4467000, offset=0x000ac000
==3517== /proc/self/maps: start=0xf4467000, end=0xf4495000, offset=0x00000000
==3517== CHECK: &rl=0xffffccd4, start=0xf4467000, end=0xf4495000

and the dump of /proc/3517/maps :

08048000-08445000 r-xp 00000000 08:06 17598328                           /data/myprog
08445000-0844e000 rw-p 003fc000 08:06 17598328                           /data/myprog
0844e000-09474000 rw-p 00000000 00:00 0                                  [heap]
1ffff000-24000000 rw-p 00000000 00:00 0 
24000000-28000000 ---p 00000000 00:00 0 
28000000-40000000 rw-p 00000000 00:00 0 
f4195000-f4199000 rw-p 00000000 00:00 0 
f4199000-f419c000 r-xp 00000000 08:01 395707                             /usr/lib32/libgpg-error.so.0.4.0
f419c000-f419d000 rw-p 00002000 08:01 395707                             /usr/lib32/libgpg-error.so.0.4.0
f419d000-f420e000 r-xp 00000000 08:01 395683                             /usr/lib32/libgcrypt.so.11.5.3
f420e000-f4211000 rw-p 00070000 08:01 395683                             /usr/lib32/libgcrypt.so.11.5.3
f4211000-f4220000 r-xp 00000000 08:01 396025                             /usr/lib32/libtasn1.so.3.1.9
f4220000-f4221000 rw-p 0000e000 08:01 396025                             /usr/lib32/libtasn1.so.3.1.9
f4221000-f4222000 rw-p 00000000 00:00 0 
f4222000-f4224000 r-xp 00000000 08:01 1175104                            /lib32/libkeyutils.so.1.3
f4224000-f4225000 rw-p 00001000 08:01 1175104                            /lib32/libkeyutils.so.1.3
f4225000-f422b000 r-xp 00000000 08:01 395794                             /usr/lib32/libkrb5support.so.0.1
f422b000-f422c000 rw-p 00005000 08:01 395794                             /usr/lib32/libkrb5support.so.0.1
f422c000-f42c0000 r-xp 00000000 08:01 395704                             /usr/lib32/libgnutls.so.26.14.12
f42c0000-f42c4000 rw-p 00094000 08:01 395704                             /usr/lib32/libgnutls.so.26.14.12
f42c4000-f42da000 r-xp 00000000 08:01 395991                             /usr/lib32/libsasl2.so.2.0.23
f42da000-f42db000 rw-p 00015000 08:01 395991                             /usr/lib32/libsasl2.so.2.0.23
f42db000-f42eb000 r-xp 00000000 08:01 1175049                            /lib32/libresolv-2.11.2.so
f42eb000-f42ec000 r--p 00010000 08:01 1175049                            /lib32/libresolv-2.11.2.so
f42ec000-f42ed000 rw-p 00011000 08:01 1175049                            /lib32/libresolv-2.11.2.so
f42ed000-f42f0000 rw-p 00000000 00:00 0 
f42f0000-f42fb000 r-xp 00000000 08:01 395796                             /usr/lib32/liblber-2.4.so.2.5.6
f42fb000-f42fc000 rw-p 0000a000 08:01 395796                             /usr/lib32/liblber-2.4.so.2.5.6
f42fc000-f4300000 r-xp 00000000 08:01 396054                             /usr/lib32/libXdmcp.so.6.0.0
f4300000-f4301000 rw-p 00003000 08:01 396054                             /usr/lib32/libXdmcp.so.6.0.0
f4301000-f4303000 r-xp 00000000 08:01 396046                             /usr/lib32/libXau.so.6.0.0
f4303000-f4304000 rw-p 00001000 08:01 396046                             /usr/lib32/libXau.so.6.0.0
f4304000-f4375000 r-xp 00000000 08:01 414621                             /usr/lib32/libgnutls.so.13.9.1
f4375000-f437a000 rw-p 00071000 08:01 414621                             /usr/lib32/libgnutls.so.13.9.1
f437a000-f438d000 r-xp 00000000 08:01 395595                             /usr/lib32/libz.so.1.2.3.4
f438d000-f438e000 rw-p 00013000 08:01 395595                             /usr/lib32/libz.so.1.2.3.4
f438e000-f438f000 rw-p 00000000 00:00 0 
f438f000-f4391000 r-xp 00000000 08:01 1175100                            /lib32/libcom_err.so.2.1
f4391000-f4392000 rw-p 00001000 08:01 1175100                            /lib32/libcom_err.so.2.1
f4392000-f43b4000 r-xp 00000000 08:01 395787                             /usr/lib32/libk5crypto.so.3.1
f43b4000-f43b5000 rw-p 00022000 08:01 395787                             /usr/lib32/libk5crypto.so.3.1
f43b5000-f4461000 r-xp 00000000 08:01 395788                             /usr/lib32/libkrb5.so.3.3
f4461000-f4467000 rw-p 000ac000 08:01 395788                             /usr/lib32/libkrb5.so.3.3
f4467000-f4495000 r-xp 00000000 08:01 395778                             /usr/lib32/libgssapi_krb5.so.2.2
f4495000-f4496000 rw-p 0002d000 08:01 395778                             /usr/lib32/libgssapi_krb5.so.2.2
f4496000-f44d8000 r-xp 00000000 08:01 395797                             /usr/lib32/libldap_r-2.4.so.2.5.6
f44d8000-f44da000 rw-p 00041000 08:01 395797                             /usr/lib32/libldap_r-2.4.so.2.5.6
f44da000-f44dc000 rw-p 00000000 00:00 0 
f44dc000-f450c000 r-xp 00000000 08:01 395781                             /usr/lib32/libidn.so.11.5.44
f450c000-f450d000 rw-p 0002f000 08:01 395781                             /usr/lib32/libidn.so.11.5.44
f450d000-f4525000 r-xp 00000000 08:01 396048                             /usr/lib32/libxcb.so.1.1.0
f4525000-f4526000 rw-p 00017000 08:01 396048                             /usr/lib32/libxcb.so.1.1.0
f4526000-f4663000 r-xp 00000000 08:01 396020                             /usr/lib32/i686/cmov/libcrypto.so.0.9.8
f4663000-f467b000 rw-p 0013c000 08:01 396020                             /usr/lib32/i686/cmov/libcrypto.so.0.9.8
f467b000-f467e000 rw-p 00000000 00:00 0 
f467e000-f47a2000 r-xp 00000000 08:01 396060                             /usr/lib32/libxml2.so.2.7.8
f47a2000-f47a7000 rw-p 00124000 08:01 396060                             /usr/lib32/libxml2.so.2.7.8
f47a7000-f47a8000 rw-p 00000000 00:00 0 
f47a8000-f47c3000 r-xp 00000000 08:01 414644                             /usr/lib32/libicudata.so.36.0
f47c3000-f47c4000 rw-p 0001a000 08:01 414644                             /usr/lib32/libicudata.so.36.0
f47c4000-f47c5000 rw-p 00000000 00:00 0 
f47c5000-f4879000 r-xp 00000000 08:01 414645                             /usr/lib32/libicucnv.so.36.0
f4879000-f487d000 rw-p 000b4000 08:01 414645                             /usr/lib32/libicucnv.so.36.0
f487d000-f487e000 rw-p 00000000 00:00 0 
f487e000-f48b2000 r-xp 00000000 08:01 414639                             /usr/lib32/libBIBUtils.so
f48b2000-f48b4000 rw-p 00034000 08:01 414639                             /usr/lib32/libBIBUtils.so
f48b4000-f48dc000 r-xp 00000000 08:01 414648                             /usr/lib32/libAXE8SharedExpat.so
f48dc000-f48df000 rw-p 00027000 08:01 414648                             /usr/lib32/libAXE8SharedExpat.so
f48df000-f493a000 r-xp 00000000 08:01 414641                             /usr/lib32/libAdobeXMP.so
f493a000-f493d000 rw-p 0005a000 08:01 414641                             /usr/lib32/libAdobeXMP.so
f493d000-f4a31000 r-xp 00000000 08:01 414650                             /usr/lib32/libJP2K.so
f4a31000-f4a34000 rw-p 000f3000 08:01 414650                             /usr/lib32/libJP2K.so
f4a34000-f4a36000 rw-p 00000000 00:00 0 
f4a36000-f4ddd000 r-xp 00000000 08:01 414643                             /usr/lib32/libCoolType.so
f4ddd000-f4dfe000 rw-p 003a7000 08:01 414643                             /usr/lib32/libCoolType.so
f4dfe000-f4e0b000 rw-p 00000000 00:00 0 
f4e0b000-f4ef6000 r-xp 00000000 08:01 414640                             /usr/lib32/libACE.so
f4ef6000-f4efb000 rw-p 000eb000 08:01 414640                             /usr/lib32/libACE.so
f4efb000-f56a6000 r-xp 00000000 08:01 414642                             /usr/lib32/libAGM.so
f56a6000-f56d5000 rw-p 007ab000 08:01 414642                             /usr/lib32/libAGM.so
f56d5000-f56ff000 rw-p 00000000 00:00 0 
f56ff000-f5746000 r-xp 00000000 08:01 414647                             /usr/lib32/libBIB.so
f5746000-f5748000 rw-p 00046000 08:01 414647                             /usr/lib32/libBIB.so
f5748000-f575c000 r-xp 00000000 08:01 395780                             /usr/lib32/libICE.so.6.3.0
f575c000-f575e000 rw-p 00013000 08:01 395780                             /usr/lib32/libICE.so.6.3.0
f575e000-f5760000 rw-p 00000000 00:00 0 
f5760000-f5767000 r-xp 00000000 08:01 395994                             /usr/lib32/libSM.so.6.0.1
f5767000-f5768000 rw-p 00006000 08:01 395994                             /usr/lib32/libSM.so.6.0.1
f5768000-f576b000 r-xp 00000000 08:01 1175116                            /lib32/libuuid.so.1.3.0
f576b000-f576c000 rw-p 00002000 08:01 1175116                            /lib32/libuuid.so.1.3.0
f576c000-f57fa000 r-xp 00000000 08:01 414615                             /usr/lib32/libnetsnmp.so.15.1.0
f57fa000-f57fd000 rw-p 0008d000 08:01 414615                             /usr/lib32/libnetsnmp.so.15.1.0
f57fd000-f581b000 rw-p 00000000 00:00 0 
f581b000-f5852000 r-xp 00000000 08:01 414624                             /usr/lib32/libcurl-gnutls.so.4.0.1
f5852000-f5853000 rw-p 00037000 08:01 414624                             /usr/lib32/libcurl-gnutls.so.4.0.1
f5853000-f585c000 r-xp 00000000 08:01 1175067                            /lib32/libcrypt-2.11.2.so
f585c000-f585d000 r--p 00008000 08:01 1175067                            /lib32/libcrypt-2.11.2.so
f585d000-f585e000 rw-p 00009000 08:01 1175067                            /lib32/libcrypt-2.11.2.so
f585e000-f5886000 rw-p 00000000 00:00 0 
f5886000-f596f000 r-xp 00000000 08:01 395572                             /usr/lib32/libstdc++.so.6.0.13
f596f000-f5973000 r--p 000e9000 08:01 395572                             /usr/lib32/libstdc++.so.6.0.13
f5973000-f5974000 rw-p 000ed000 08:01 395572                             /usr/lib32/libstdc++.so.6.0.13
f5974000-f597b000 rw-p 00000000 00:00 0 
f597b000-f5a94000 r-xp 00000000 08:01 396045                             /usr/lib32/libX11.so.6.3.0
f5a94000-f5a98000 rw-p 00118000 08:01 396045                             /usr/lib32/libX11.so.6.3.0
f5a98000-f6f8c000 r-xp 00000000 08:01 425608                             /usr/lib32/libMYLIB3.so
f6f8c000-f6ffd000 rw-p 014f3000 08:01 425608                             /usr/lib32/libMYLIB3.so
f6ffd000-f702e000 rw-p 00000000 00:00 0 
f702e000-f7052000 r-xp 00000000 08:01 1175065                            /lib32/libm-2.11.2.so
f7052000-f7053000 r--p 00023000 08:01 1175065                            /lib32/libm-2.11.2.so
f7053000-f7054000 rw-p 00024000 08:01 1175065                            /lib32/libm-2.11.2.so
f7054000-f7194000 r-xp 00000000 08:01 1175056                            /lib32/libc-2.11.2.so
f7194000-f7195000 ---p 00140000 08:01 1175056                            /lib32/libc-2.11.2.so
f7195000-f7197000 r--p 00140000 08:01 1175056                            /lib32/libc-2.11.2.so
f7197000-f7198000 rw-p 00142000 08:01 1175056                            /lib32/libc-2.11.2.so
f7198000-f719c000 rw-p 00000000 00:00 0 
f719c000-f71b9000 r-xp 00000000 08:01 395561                             /usr/lib32/libgcc_s.so.1
f71b9000-f71ba000 rw-p 0001c000 08:01 395561                             /usr/lib32/libgcc_s.so.1
f71ba000-f71bc000 r-xp 00000000 08:01 1175055                            /lib32/libdl-2.11.2.so
f71bc000-f71bd000 r--p 00001000 08:01 1175055                            /lib32/libdl-2.11.2.so
f71bd000-f71be000 rw-p 00002000 08:01 1175055                            /lib32/libdl-2.11.2.so
f71be000-f71d3000 r-xp 00000000 08:01 1175057                            /lib32/libpthread-2.11.2.so
f71d3000-f71d4000 r--p 00014000 08:01 1175057                            /lib32/libpthread-2.11.2.so
f71d4000-f71d5000 rw-p 00015000 08:01 1175057                            /lib32/libpthread-2.11.2.so
f71d5000-f71d7000 rw-p 00000000 00:00 0 
f71d7000-f7bdf000 r-xp 00000000 08:01 414649                             /usr/lib32/libpdfl.so
f7bdf000-f7c1e000 rw-p 00a08000 08:01 414649                             /usr/lib32/libpdfl.so
f7c1e000-f7c22000 rw-p 00000000 00:00 0 
f7c22000-f7c70000 r-xp 00000000 08:01 396070                             /usr/lib32/libXt.so.6.0.0
f7c70000-f7c74000 rw-p 0004d000 08:01 396070                             /usr/lib32/libXt.so.6.0.0
f7c74000-f7f42000 r-xp 00000000 08:01 425611                             /usr/lib32/libMYLIB1.so
f7f42000-f7f4c000 rw-p 002ce000 08:01 425611                             /usr/lib32/libMYLIB1.so
f7f4c000-f7f50000 rw-p 00000000 00:00 0 
f7f50000-f7f55000 r-xp 00000000 08:01 414632                             /usr/lib32/libraw1394.so.8.2.0
f7f55000-f7f56000 rw-p 00004000 08:01 414632                             /usr/lib32/libraw1394.so.8.2.0
f7f56000-f7fbf000 r-xp 00000000 08:01 416014                             /usr/lib32/libMYLIB2.so
f7fbf000-f7fc1000 rw-p 00069000 08:01 416014                             /usr/lib32/libMYLIB2.so
f7fc1000-f7fc6000 rw-p 00000000 00:00 0 
f7fdb000-f7fdf000 rw-p 00000000 00:00 0 
f7fdf000-f7fe0000 r-xp 00000000 00:00 0                                  [vdso]
f7fe0000-f7ffc000 r-xp 00000000 08:01 1175068                            /lib32/ld-2.11.2.so
f7ffc000-f7ffd000 r--p 0001b000 08:01 1175068                            /lib32/ld-2.11.2.so
f7ffd000-f7ffe000 rw-p 0001c000 08:01 1175068                            /lib32/ld-2.11.2.so
fffe9000-ffffe000 rwxp 00000000 00:00 0                                  [stack]

Reported by mkvtoolnix.build.jonthn on 2012-01-16 14:20:15

ramosian-glider · 2015-08-31T14:15:11Z

Looks like you're breaking the loop because the /proc/self/maps iterator returns False.
Can you print the arguments and SScanf result here:

195   if (SScanf(current_,
196              "%lx-%lx %4s %lx %x:%x %ld %n",
197              start, end, flags, offset, &major, &minor,
198              &inode, &consumed) != 7) 
199     return false;

(asan_linux.cc again)

Reported by ramosian.glider on 2012-01-16 14:39:59

ramosian-glider · 2015-08-31T14:15:19Z

With the sources modified like this :
--- asan_linux.cc       (revision 148237)
+++ asan_linux.cc       (working copy)
@@ -192,11 +192,17 @@
   char *next_line = (char*)internal_memchr(current_, '\n', last - current_);
   if (next_line == NULL)
     next_line = last;
-  if (SScanf(current_,
+
+  int result = 0;
+  if ((result = SScanf(current_,
              "%lx-%lx %4s %lx %x:%x %ld %n",
              start, end, flags, offset, &major, &minor,
-             &inode, &consumed) != 7)
+             &inode, &consumed)) != 7) {
+    Report("SScanf false ret:%d : start=%p, end=%p, flags=%p, offset=%p, major=%d,
minor=%d, inode=%p, consumed=%d\n", result, current_, start, end, flags, offset, major,
minor, &inode, consumed);
     return false;
+  } else {
+    Report("SScanf true ret:%d : start=%p, end=%p, flags=%p, offset=%p, major=%d,
minor=%d, inode=%p, consumed=%d\n", result, current_, start, end, flags, offset, major,
minor, &inode, consumed);
+  }
   current_ += consumed;
   // Skip spaces.
   while (current_ < next_line && *current_ == ' ')
@@ -286,16 +292,19 @@
     // This is the main thread. Libpthread may not be initialized yet.
     struct rlimit rl;
     CHECK(getrlimit(RLIMIT_STACK, &rl) == 0);
+    Report("RLIMIT_STACK: &rl=%p, rlim_cur=%d, rlim_max=%d\n", &rl, rl.rlim_cur, rl.rlim_max);

     // Find the mapping that contains a stack variable.
     AsanProcMaps proc_maps;
     uintptr_t start, end, offset;
     uintptr_t prev_end = 0;
     while (proc_maps.Next(&start, &end, &offset, NULL, 0)) {
+      Report("/proc/self/maps: start=%p, end=%p, offset=%p\n", start, end, offset);
       if ((uintptr_t)&rl < end)
         break;
       prev_end = end;
     }
+    Report("CHECK: &rl=%p, start=%p, end=%p\n", &rl, start, end);
     CHECK((uintptr_t)&rl >= start && (uintptr_t)&rl < end);

     // Get stacksize from rlimit, but clip it so that it does not overlap


I get :
==4205== RLIMIT_STACK: &rl=0xffeb3fa4, rlim_cur=8388608, rlim_max=-1
==4205== SScanf true ret:7 : start=0xf7700000, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000006, consumed=-1360108
==4205== /proc/self/maps: start=0x08048000, end=0x08445000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700076, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000006, consumed=-1360108
==4205== /proc/self/maps: start=0x08445000, end=0x0844f000, offset=0x003fc000
==4205== SScanf true ret:7 : start=0xf77000ec, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0x0844f000, end=0x09474000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700115, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0x1ffff000, end=0x24000000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf770013e, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0x24000000, end=0x28000000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700167, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0x28000000, end=0x40000000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700190, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0xf38ba000, end=0xf38be000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf77001b9, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf38be000, end=0xf38c1000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700223, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf38c1000, end=0xf38c2000, offset=0x00002000
==4205== SScanf true ret:7 : start=0xf770028d, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf38c2000, end=0xf3933000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf77002f5, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3933000, end=0xf3936000, offset=0x00070000
==4205== SScanf true ret:7 : start=0xf770035d, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3936000, end=0xf3945000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf77003c3, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3945000, end=0xf3946000, offset=0x0000e000
==4205== SScanf true ret:7 : start=0xf7700429, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0xf3946000, end=0xf3947000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700452, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3947000, end=0xf3949000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf77004b5, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3949000, end=0xf394a000, offset=0x00001000
==4205== SScanf true ret:7 : start=0xf7700518, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf394a000, end=0xf3950000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700582, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3950000, end=0xf3951000, offset=0x00005000
==4205== SScanf true ret:7 : start=0xf77005ec, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3951000, end=0xf39e5000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700656, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf39e5000, end=0xf39e9000, offset=0x00094000
==4205== SScanf true ret:7 : start=0xf77006c0, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf39e9000, end=0xf39ff000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700727, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf39ff000, end=0xf3a00000, offset=0x00015000
==4205== SScanf true ret:7 : start=0xf770078e, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a00000, end=0xf3a10000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf77007f2, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a10000, end=0xf3a11000, offset=0x00010000
==4205== SScanf true ret:7 : start=0xf7700856, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a11000, end=0xf3a12000, offset=0x00011000
==4205== SScanf true ret:7 : start=0xf77008ba, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a12000, end=0xf3a15000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf77008e3, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a15000, end=0xf3a20000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf770094c, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a20000, end=0xf3a21000, offset=0x0000a000
==4205== SScanf true ret:7 : start=0xf77009b5, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a21000, end=0xf3a25000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700a1b, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a25000, end=0xf3a26000, offset=0x00003000
==4205== SScanf true ret:7 : start=0xf7700a81, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a26000, end=0xf3a28000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700ae5, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a28000, end=0xf3a29000, offset=0x00001000
==4205== SScanf true ret:7 : start=0xf7700b49, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a29000, end=0xf3a9a000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700bb1, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a9a000, end=0xf3a9f000, offset=0x00071000
==4205== SScanf true ret:7 : start=0xf7700c19, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3a9f000, end=0xf3ab2000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700c7d, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3ab2000, end=0xf3ab3000, offset=0x00013000
==4205== SScanf true ret:7 : start=0xf7700ce1, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=0, inode=0x00000000, consumed=-1360108
==4205== /proc/self/maps: start=0xf3ab3000, end=0xf3ab4000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700d0a, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3ab4000, end=0xf3ab6000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700d6c, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3ab6000, end=0xf3ab7000, offset=0x00001000
==4205== SScanf true ret:7 : start=0xf7700dce, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3ab7000, end=0xf3ad9000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700e35, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3ad9000, end=0xf3ada000, offset=0x00022000
==4205== SScanf true ret:7 : start=0xf7700e9c, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3ada000, end=0xf3b86000, offset=0x00000000
==4205== SScanf true ret:7 : start=0xf7700eff, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3b86000, end=0xf3b8c000, offset=0x000ac000
==4205== SScanf true ret:7 : start=0xf7700f62, end=0xffeb3f90, flags=0xffeb3f8c, offset=0xffeb3f22,
major=-1359992, minor=8, inode=0x00000001, consumed=-1360108
==4205== /proc/self/maps: start=0xf3b8c000, end=0xf3bba000, offset=0x00000000
==4205== CHECK: &rl=0xffeb3fa4, start=0xf3b8c000, end=0xf3bba000
==4205== CHECK failed: (uintptr_t)&rl >= start && (uintptr_t)&rl < end at asan_linux.cc:308

Reported by mkvtoolnix.build.jonthn on 2012-01-16 15:51:28

ramosian-glider · 2015-08-31T14:15:27Z

AsanProcMaps::AsanProcMaps from asan_linux.cc reads /proc/self/maps into &proc_self_maps_buff_
and then AsanProcMaps::Next tries to parse it. 
AsanProcMaps::Next should return false only after it successfully parsed 
the last line of /proc/self/maps. 

Apparently, one of these routines fails to do what it should on your system. 

It is quite hard to debug the problem w/o being able to reproduce it. 
So, either please debug it and send us a patch that fixes the problem, or send us the
contents of /proc/self/maps as a file attachment (it is important to keep it verbatim).

Reported by konstantin.s.serebryany on 2012-01-16 20:14:29

ramosian-glider · 2015-08-31T14:15:34Z

btw, I've tried the contents of your /proc/self/maps from comment #8 and it gets parsed
ok on my system. So, it might be something special about your system.

Reported by konstantin.s.serebryany on 2012-01-16 20:32:45

ramosian-glider · 2015-08-31T14:15:42Z

Thanks for the information and pointer where to look and to do. I found where the problem
is but I don't know why it didn't worked.
(Also I forgot to tell you that rev146212 worked fined)

So the problem came from ReadFileToBuffer which didn't returned the complete /proc/self/maps,
I hacked a bit the source (see the patch attached) and now it works.

Before it only returned 4044 bytes of 12922 bytes :
==560== ReadFileToBuffer Calculated size 1898 for /proc/self/environ
==560== ReadFileToBuffer buffer size: 1898 MAX: 1048576
==560== AsanProcMaps /proc/self/maps size: 12922 bytes
==560== ReadFileToBuffer Calculated size 12922 for /proc/self/maps
==560== ReadFileToBuffer buffer size: 4044 MAX: 1048576
==560== AsanProcMaps Buffer from /proc/self/maps size: 4044 bytes
==560== CHECK failed: (uintptr_t)&rl >= start && (uintptr_t)&rl < end at asan_linux.cc:329
==560== AsanProcMaps /proc/self/maps size: 12922 bytes
==560== ReadFileToBuffer Calculated size 12922 for /proc/self/maps
==560== ReadFileToBuffer buffer size: 4044 MAX: 1048576
==560== AsanProcMaps Buffer from /proc/self/maps size: 4044 bytes

now I get :
==21303== ReadFileToBuffer Calculated size 1898 for /proc/self/environ
==21303== ReadFileToBuffer buffer size: 1898 MAX: 1048576
==21303== AsanProcMaps /proc/self/maps size: 12922 bytes
==21303== ReadFileToBuffer Calculated size 12922 for /proc/self/maps
==21303== ReadFileToBuffer buffer size: 12922 MAX: 1048576
==21303== AsanProcMaps Buffer from /proc/self/maps size: 12922 bytes

I don't know what the real fix should be but I hope you can make one based on these
informations.
Thanks again for your time and help.

Reported by mkvtoolnix.build.jonthn on 2012-01-17 15:44:57

- _Attachment: [fix-asan-readtobuffer-linux.patch](https://storage.googleapis.com/google-code-attachments/address-sanitizer/issue-27/comment-13/fix-asan-readtobuffer-linux.patch)_

ramosian-glider · 2015-08-31T14:15:50Z

Thanks for the report and for the suggested patch. 
I believe the problem is fixed by LLVM r148311.

This was a recent regression caused by my changes in the way we are reading and parsing
/proc/self/maps.

Reported by konstantin.s.serebryany on 2012-01-17 18:06:16

Status changed: Fixed

ramosian-glider · 2015-08-31T14:15:57Z

Adding Project:AddressSanitizer as part of GitHub migration.

Reported by ramosian.glider on 2015-07-30 09:12:58

Labels added: ProjectAddressSanitizer

ramosian-glider assigned google Aug 31, 2015

ramosian-glider added Type-Defect Priority-Medium ProjectAddressSanitizer Status-Fixed labels Aug 31, 2015

ramosian-glider closed this as completed Aug 31, 2015

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Early segfaults in __tsan::TraceAddEvent #772

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eugenis mentioned this issue Apr 24, 2024

Workarounds for #837 (Shadow memory range interleaves with an existing memory mapping. ASan cannot proceed correctly. ABORTING.) #856

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CHECK fails on linux and program doesn't launch #27

CHECK fails on linux and program doesn't launch #27

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

CHECK fails on linux and program doesn't launch #27

CHECK fails on linux and program doesn't launch #27

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ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015

ramosian-glider commented Aug 31, 2015