@@ -20,6 +20,8 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk,
pr_debug("msk=%p, local_id=%d", msk, addr->id);
+ lockdep_assert_held(&msk->pm.lock);
+
if (add_addr) {
pr_warn("addr_signal error, add_addr=%d", add_addr);
return -EINVAL;
@@ -138,6 +138,8 @@ select_local_address(const struct pm_nl_pernet *pernet,
{
struct mptcp_pm_addr_entry *entry, *ret = NULL;
+ msk_owned_by_me(msk);
+
rcu_read_lock();
__mptcp_flush_join_list(msk);
list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
@@ -195,6 +197,8 @@ lookup_anno_list_by_saddr(struct mptcp_sock *msk,
{
struct mptcp_pm_add_entry *entry;
+ lockdep_assert_held(&msk->pm.lock);
+
list_for_each_entry(entry, &msk->pm.anno_list, list) {
if (addresses_equal(&entry->addr, addr, false))
return entry;
@@ -270,6 +274,8 @@ static bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
struct sock *sk = (struct sock *)msk;
struct net *net = sock_net(sk);
+ lockdep_assert_held(&msk->pm.lock);
+
if (lookup_anno_list_by_saddr(msk, &entry->addr))
return false;
@@ -412,6 +418,9 @@ void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
{
struct mptcp_subflow_context *subflow;
+ msk_owned_by_me(msk);
+ lockdep_assert_held(&msk->pm.lock);
+
if (!mptcp_pm_should_add_signal_ipv6(msk) &&
!mptcp_pm_should_add_signal_port(msk))
return;
@@ -484,6 +493,8 @@ void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
pr_debug("address rm_id %d", msk->pm.rm_id);
+ msk_owned_by_me(msk);
+
if (!msk->pm.rm_id)
return;
@@ -519,6 +530,8 @@ void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id)
pr_debug("subflow rm_id %d", rm_id);
+ msk_owned_by_me(msk);
+
if (!rm_id)
return;
@@ -2170,6 +2170,8 @@ static void __mptcp_close_subflow(struct mptcp_sock *msk)
{
struct mptcp_subflow_context *subflow, *tmp;
+ might_sleep();
+
list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) {
struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
@@ -2517,6 +2519,8 @@ static void __mptcp_destroy_sock(struct sock *sk)
pr_debug("msk=%p", msk);
+ might_sleep();
+
/* dispose the ancillatory tcp socket, if any */
if (msk->subflow) {
iput(SOCK_INODE(msk->subflow));
@@ -291,6 +291,11 @@ struct mptcp_sock {
#define mptcp_for_each_subflow(__msk, __subflow) \
list_for_each_entry(__subflow, &((__msk)->conn_list), node)
+static inline void msk_owned_by_me(const struct mptcp_sock *msk)
+{
+ sock_owned_by_me((const struct sock *)msk);
+}
+
static inline struct mptcp_sock *mptcp_sk(const struct sock *sk)
{
return (struct mptcp_sock *)sk;
Add a few assertions to make sure functions are called with the needed locks held. Two functions gain might_sleep annotations because they contain conditional calls to functions that sleep. Signed-off-by: Florian Westphal <fw@strlen.de> --- net/mptcp/pm.c | 2 ++ net/mptcp/pm_netlink.c | 13 +++++++++++++ net/mptcp/protocol.c | 4 ++++ net/mptcp/protocol.h | 5 +++++ 4 files changed, 24 insertions(+)