vppinfra: fix array_mask_u32 underrun

Properly handle small buffers in the AVX256 version of array_mask_u32.

Type: fix
Signed-off-by: Dmitry Valter <d-valter@yandex-team.com>
Fixes: f62ed3f9c1ec3e8db36f63d6a54f46b7bea43723
Change-Id: Idf1cb43ccf37bd7c439d11e4f68fe30064c6d09a

diff --git a/src/vppinfra/vector/array_mask.h b/src/vppinfra/vector/array_mask.h
index ba22d79..3d4a82a 100644 (file)
--- a/src/vppinfra/vector/array_mask.h
+++ b/src/vppinfra/vector/array_mask.h
@@ -57,6 +57,7 @@ clib_array_mask_u32 (u32 *src, u32 mask, u32 n_elts)
       u32x4 mask4 = u32x4_splat (mask);
       *(u32x4u *) src &= mask4;
       *(u32x4u *) (src + n_elts - 4) &= mask4;
+      return;
     }
 #endif