[klee-dev] klee/runtime/POSIX/fd.c:40: memory error: out of bound pointer

[asantosa1999 at gmail.com]

Yes, I think KLEE has discovered an out-of-bound memory access.
It could be that pathname is NULL.

Best,
Andrew
On Sat Jun 17 2017 11:17:36 GMT+0800 (SGT), Nourah mmm <dnoorah at gmail.com> wrote:

Hi,  

After running KLEE on Stencil Benchmark( within Parboil benchmarks). I encountered this error:
-----------------------------------------------------------------------------------------------------------
klee --libc=uclibc --posix-runtime all.bc 128 128 32 100 '/home/parboil/datasets/stencil/small/input/128x128x32.bin' 
KLEE: NOTE: Using klee-uclibc : /home/klee/Release+Asserts/lib/klee-uclibc.bca
KLEE: NOTE: Using model: /home/klee/Release+Asserts/lib/libkleeRuntimePOSIX.bca
KLEE: output directory is "/home/klee/examples/stencil/klee-out-36"
Using STP solver backend
KLEE: WARNING: undefined reference to function: klee_posix_prefer_cex
KLEE: WARNING ONCE: calling external: syscall(16, 0, 21505, 36697536)
KLEE: WARNING ONCE: calling __user_main with extra arguments.
KLEE: WARNING ONCE: calling external: printf(31963744)

CPU-based 7 points stencil codes****
Original version by Li-Wen Chang <lchang20 at illinois.edu> and I-Jui Sung<sung10 at illinois.edu>
This version maintained by Chris Rodrigues  ***********
KLEE: WARNING ONCE: calling external: gettimeofday(30721744, 0)
KLEE: ERROR: /home/klee/runtime/POSIX/fd.c:40: memory error: out of bound pointer
KLEE: NOTE: now ignoring this error at this location

KLEE: done: total instructions = 8411
KLEE: done: completed paths = 1
KLEE: done: generated tests = 1
-------------------------------------------------------------------------------------------------
Note that I'm I'm using LLVM 3.4.2. 

The error pointing on the following line in fd.c:
  char c = pathname[0]; 

Is this consider as a bug in KLEE?

Best regards,
Nourah
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