selftests/resctrl: Return NULL if malloc_and_init_memory() did not alloc mem
authorIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Wed, 15 Feb 2023 13:05:57 +0000 (15:05 +0200)
committerShuah Khan <skhan@linuxfoundation.org>
Mon, 10 Apr 2023 18:20:28 +0000 (12:20 -0600)
malloc_and_init_memory() in fill_buf isn't checking if memalign()
successfully allocated memory or not before accessing the memory.

Check the return value of memalign() and return NULL if allocating
aligned memory fails.

Fixes: a2561b12fe39 ("selftests/resctrl: Add built in benchmark")
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
tools/testing/selftests/resctrl/fill_buf.c

index 56ccbea..c20d0a7 100644 (file)
@@ -68,6 +68,8 @@ static void *malloc_and_init_memory(size_t s)
        size_t s64;
 
        void *p = memalign(PAGE_SIZE, s);
+       if (!p)
+               return NULL;
 
        p64 = (uint64_t *)p;
        s64 = s / sizeof(uint64_t);