On 10/23/24 18:06, David Marchand wrote:
On Wed, Oct 23, 2024 at 5:16 PM Maxime Coquelin
<maxime.coque...@redhat.com> wrote:

This patch fixes missing reconnection log unmapping
miss in the error path at VDUSE creation time.

Coverity issue: 445525
Fixes: da79cc7fda76 ("vhost: add reconnection support to VDUSE")

Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>

VDUSE* in the title, for consistency please.

Fixed in v2.

Reviewed-by: David Marchand <david.march...@redhat.com>

One comment below.

---
  lib/vhost/vduse.c | 24 +++++++++++++-----------
  1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/lib/vhost/vduse.c b/lib/vhost/vduse.c
index f9ac317438..89bc29a33f 100644
--- a/lib/vhost/vduse.c
+++ b/lib/vhost/vduse.c
@@ -488,7 +488,7 @@ vduse_device_create(const char *path, bool 
compliant_ol_flags)
         struct vduse_dev_config *dev_config = NULL;

dev_config could be allocated on the stack, rather than the heap.

But at least, move dev_config declaration in the block where it is
used, this will limit the chance a future change introduces a leak.


I moved dev_config declaration in the block, having it declared in the
heap makes it less readable IMHO.


         const char *name = path + strlen("/dev/vduse/");
         char reconnect_file[PATH_MAX];
-       struct vhost_reconnect_data *reconnect_log = NULL;
+       struct vhost_reconnect_data *reconnect_log = MAP_FAILED;
         bool reconnect = false;

         if (vduse.fdset == NULL) {



Thanks,
Maxime

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