From f93cfdc583d4c26b2a878642adf574e11909863c Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Mon, 16 Mar 2020 16:07:02 +0000 Subject: [PATCH] hw/rdma: avoid suspicious strncpy() use MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit gcc (GCC) 9.2.1 20190827 (Red Hat 9.2.1-1) with sanitizers enabled reports the following error: CC x86_64-softmmu/hw/rdma/vmw/pvrdma_dev_ring.o In file included from /usr/include/string.h:495, from include/qemu/osdep.h:101, from hw/rdma/vmw/pvrdma_dev_ring.c:16: In function ‘strncpy’, inlined from ‘pvrdma_ring_init’ at hw/rdma/vmw/pvrdma_dev_ring.c:33:5: /usr/include/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ specified bound 32 equals destination size [-Werror=stringop-truncation] 106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Use pstrcpy() instead of strncpy(). It is guaranteed to NUL-terminate strings. Signed-off-by: Stefan Hajnoczi Reviewed-by: Juan Quintela Reviewed-by: Yuval Shaia Message-Id: <20200316160702.478964-3-stefanha@redhat.com> Signed-off-by: Marcel Apfelbaum --- hw/rdma/vmw/pvrdma_dev_ring.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/rdma/vmw/pvrdma_dev_ring.c b/hw/rdma/vmw/pvrdma_dev_ring.c index c2b3dd70a9..c122fe7035 100644 --- a/hw/rdma/vmw/pvrdma_dev_ring.c +++ b/hw/rdma/vmw/pvrdma_dev_ring.c @@ -14,6 +14,7 @@ */ #include "qemu/osdep.h" +#include "qemu/cutils.h" #include "hw/pci/pci.h" #include "cpu.h" #include "qemu/cutils.h"