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[Qemu-devel] [PATCH 1/2] qemu/iovec: Don't assert if sbytes is zero
From: |
Aneesh Kumar K.V |
Subject: |
[Qemu-devel] [PATCH 1/2] qemu/iovec: Don't assert if sbytes is zero |
Date: |
Tue, 5 Feb 2013 11:27:45 +0530 |
From: "Aneesh Kumar K.V" <address@hidden>
Since these values can possibly be sent from guest (for hw/9pfs), do a sanity
check
on them. A 9p write request with 0 bytes caused qemu to abort without this patch
Signed-off-by: Aneesh Kumar K.V <address@hidden>
---
util/iov.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/util/iov.c b/util/iov.c
index c0f5c56..fbe675d 100644
--- a/util/iov.c
+++ b/util/iov.c
@@ -304,6 +304,10 @@ void qemu_iovec_concat_iov(QEMUIOVector *dst,
{
int i;
size_t done;
+
+ if (!sbytes) {
+ return;
+ }
assert(dst->nalloc != -1);
for (i = 0, done = 0; done < sbytes && i < src_cnt; i++) {
if (soffset < src_iov[i].iov_len) {
--
1.7.10
- [Qemu-devel] [PATCH 1/2] qemu/iovec: Don't assert if sbytes is zero,
Aneesh Kumar K.V <=