qemu_iovec_destroy does not clear the QEMUIOVector fully, and the data
could thus be used after free or freed again. This can be observed with
virtio-scsi, because canceling DMA requests can happen more easily with
SCSI (due to task management functions) than with other backends.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
cutils.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/cutils.c b/cutils.c
index 6db6304..24b3fe3 100644
--- a/cutils.c
+++ b/cutils.c
@@ -217,7 +217,10 @@ void qemu_iovec_destroy(QEMUIOVector *qiov)
{
assert(qiov->nalloc != -1);
+ qemu_iovec_reset(qiov);
g_free(qiov->iov);
+ qiov->nalloc = 0;
+ qiov->iov = NULL;
}
void qemu_iovec_reset(QEMUIOVector *qiov)
--
1.7.7.1
