fsstress: Fix wrong size argument to getcwd()

Fixes the following ASAN failure:

==11670==WARNING: AddressSanitizer failed to allocate 0xffffffffffffffff bytes
==11670==AddressSanitizer's allocator is terminating the process instead of returning 0

...

    #5 0x4bb230 in __interceptor_malloc /home/vak-local/3.9.1/release/final/llvm.src/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:65:10
    #6 0x7f97e6491405 in getcwd /build/glibc-6V9RKT/glibc-2.19/io/../sysdeps/unix/sysv/linux/getcwd.c:68
    #7 0x454691 in getcwd /home/vak-local/3.9.1/release/final/llvm.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:2822:15
    #8 0x4f765d in doproc /.../ltp/fsstress.c:933:12
    #9 0x4f5f54 in main /.../ltp/fsstress.c:581:5

Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eryu Guan <eguan@redhat.com>

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 24c063e350ca8ec073def89e9e1e03f22525e5e8..96f48b1c27f2f047c15fc4294653c0ac4ddf1c61 100644 (file)
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -965,7 +965,7 @@ doproc(void)
                _exit(1);
        }
        top_ino = statbuf.st_ino;
-       homedir = getcwd(NULL, -1);
+       homedir = getcwd(NULL, 0);
        seed += procid;
        srandom(seed);
        if (namerand)