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[Qemu-devel] [PATCH PULL 4/4] hw/rdma: avoid suspicious strncpy() use
From: |
Marcel Apfelbaum |
Subject: |
[Qemu-devel] [PATCH PULL 4/4] hw/rdma: avoid suspicious strncpy() use |
Date: |
Sat, 21 Mar 2020 21:13:11 +0200 |
From: Stefan Hajnoczi <address@hidden>
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 <address@hidden>
Reviewed-by: Juan Quintela <address@hidden>
Reviewed-by: Yuval Shaia <yuval.shaia.ml.gmail.com>
Message-Id: <address@hidden>
Signed-off-by: Marcel Apfelbaum <address@hidden>
---
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"
--
2.17.2