[PATCH virt] virt: fix uninit-value in vhost_vsock_dev_open

[Jeongjun Park]

Change vhost_vsock_dev_open() to use kvzalloc() instead of kvmalloc()
to avoid uninit state.

Reported-by: syzbot+6c21aeb59d0e82eb2...@syzkaller.appspotmail.com
Fixes: dcda9b04713c ("mm, tree wide: replace __GFP_REPEAT by 
__GFP_RETRY_MAYFAIL with more useful semantic")
Signed-off-by: Jeongjun Park <aha310...@gmail.com>
---
 drivers/vhost/vsock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index ec20ecff85c7..652ef97a444b 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -656,7 +656,7 @@ static int vhost_vsock_dev_open(struct inode *inode, struct 
file *file)
        /* This struct is large and allocation could fail, fall back to vmalloc
         * if there is no other way.
         */
-       vsock = kvmalloc(sizeof(*vsock), GFP_KERNEL | __GFP_RETRY_MAYFAIL);
+       vsock = kvzalloc(sizeof(*vsock), GFP_KERNEL | __GFP_RETRY_MAYFAIL);
        if (!vsock)
                return -ENOMEM;
 
-- 
2.34.1