linux_compat: fix potential NULL pointer access

malloc_cache_aligned() might return zero, so fix potential NULL pointer
access if __GFP_ZERO flag is set.

Signed-off-by: Marek Szyprowski <[email protected]>
Reviewed-by: Ralph Siemsen <[email protected]>

diff --git a/lib/linux_compat.c b/lib/linux_compat.c
index 6373b4451eb3fdafaed99cfeb7eb40f7821712b0..81ea8fb126fa2fec7230479ae77d744cde337e4c 100644 (file)
--- a/lib/linux_compat.c
+++ b/lib/linux_compat.c
@@ -20,7 +20,7 @@ void *kmalloc(size_t size, int flags)
        void *p;
 
        p = malloc_cache_aligned(size);
-       if (flags & __GFP_ZERO)
+       if (p && flags & __GFP_ZERO)
                memset(p, 0, size);
 
        return p;