diff mbox series

hw/xen: Fix memory leak in libxenstore_open() for Xen

Message ID daaa71eea7fa0c4bdb70131d794ce8e5cee0e0c2.camel@infradead.org (mailing list archive)
State New, archived
Headers show
Series hw/xen: Fix memory leak in libxenstore_open() for Xen | expand

Commit Message

David Woodhouse April 4, 2023, 6:24 p.m. UTC 
From: David Woodhouse <dwmw@amazon.co.uk>

There was a superfluous allocation of the XS handle, leading to it
being leaked on both the error path and the success path (where it gets
allocated again).

Spotted by Coverity (CID 1508098).

Fixes: ba2a92db1ff6 ("hw/xen: Add xenstore operations to allow redirection to internal emulation")
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
 hw/xen/xen-operations.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Peter Maydell April 4, 2023, 6:28 p.m. UTC | #1 
On Tue, 4 Apr 2023 at 19:25, David Woodhouse <dwmw2@infradead.org> wrote:
>
> From: David Woodhouse <dwmw@amazon.co.uk>
>
> There was a superfluous allocation of the XS handle, leading to it
> being leaked on both the error path and the success path (where it gets
> allocated again).
>
> Spotted by Coverity (CID 1508098).
>
> Fixes: ba2a92db1ff6 ("hw/xen: Add xenstore operations to allow redirection to internal emulation")
> Suggested-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
> ---
>  hw/xen/xen-operations.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/xen/xen-operations.c b/hw/xen/xen-operations.c
> index 4b78fbf4bd..3d213d28df 100644
> --- a/hw/xen/xen-operations.c
> +++ b/hw/xen/xen-operations.c
> @@ -287,7 +287,7 @@ static void watch_event(void *opaque)
>  static struct qemu_xs_handle *libxenstore_open(void)
>  {
>      struct xs_handle *xsh = xs_open(0);
> -    struct qemu_xs_handle *h = g_new0(struct qemu_xs_handle, 1);
> +    struct qemu_xs_handle *h;
>
>      if (!xsh) {
>          return NULL;
> --
> 2.34.1

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM
diff mbox series

Patch

diff --git a/hw/xen/xen-operations.c b/hw/xen/xen-operations.c
index 4b78fbf4bd..3d213d28df 100644
--- a/hw/xen/xen-operations.c
+++ b/hw/xen/xen-operations.c
@@ -287,7 +287,7 @@  static void watch_event(void *opaque)
 static struct qemu_xs_handle *libxenstore_open(void)
 {
     struct xs_handle *xsh = xs_open(0);
-    struct qemu_xs_handle *h = g_new0(struct qemu_xs_handle, 1);
+    struct qemu_xs_handle *h;
 
     if (!xsh) {
         return NULL;