[Xen-devel] [PATCH 3/5] pvcalls-front: properly allocate sk

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

Don't use kzalloc: it ends up leaving sk->sk_prot not properly
initialized. Use sk_alloc instead and define our own trivial struct
proto.

Signed-off-by: Stefano Stabellini <stefanos@xxxxxxxxxx>
---
 drivers/xen/pvcalls-front.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/xen/pvcalls-front.c b/drivers/xen/pvcalls-front.c
index 4f3d664..0158858 100644
--- a/drivers/xen/pvcalls-front.c
+++ b/drivers/xen/pvcalls-front.c
@@ -31,6 +31,12 @@
 #define PVCALLS_NR_RSP_PER_RING __CONST_RING_SIZE(xen_pvcalls, XEN_PAGE_SIZE)
 #define PVCALLS_FRONT_MAX_SPIN 5000
 
+static struct proto pvcalls_proto = {
+       .name   = "PVCalls",
+       .owner  = THIS_MODULE,
+       .obj_size = sizeof(struct sock),
+};
+
 struct pvcalls_bedata {
        struct xen_pvcalls_front_ring ring;
        grant_ref_t ref;
@@ -837,7 +843,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket 
*newsock, int flags)
 
 received:
        map2->sock = newsock;
-       newsock->sk = kzalloc(sizeof(*newsock->sk), GFP_KERNEL);
+       newsock->sk = sk_alloc(sock_net(sock->sk), PF_INET, GFP_KERNEL, 
&pvcalls_proto, false);
        if (!newsock->sk) {
                bedata->rsp[req_id].req_id = PVCALLS_INVALID_ID;
                map->passive.inflight_req_id = PVCALLS_INVALID_ID;
-- 
1.9.1


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