@@ -1382,8 +1382,9 @@ static inline void unlock_sock_fast(struct sock *sk, bool slow)
spin_unlock_bh(&sk->sk_lock.slock);
}
-static bool lockdep_sock_is_held(struct sock *sk)
+static bool lockdep_sock_is_held(const struct sock *csk)
{
+ struct sock *sk = (struct sock *)csk;
return lockdep_is_held(&sk->sk_lock) ||
lockdep_is_held(&sk->sk_lock.slock);
}
@@ -1589,8 +1590,8 @@ static inline void sk_rethink_txhash(struct sock *sk)
static inline struct dst_entry *
__sk_dst_get(struct sock *sk)
{
- return rcu_dereference_check(sk->sk_dst_cache, sock_owned_by_user(sk) ||
- lockdep_is_held(&sk->sk_lock.slock));
+ return rcu_dereference_check(sk->sk_dst_cache,
+ lockdep_sock_is_held(sk));
}
static inline struct dst_entry *
@@ -62,7 +62,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
nexthop = daddr = usin->sin_addr.s_addr;
inet_opt = rcu_dereference_protected(inet->inet_opt,
- sock_owned_by_user(sk));
+ lockdep_sock_is_held(sk));
if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
@@ -865,7 +865,7 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
- opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
+ opt = rcu_dereference_protected(np->opt, lockdep_sock_is_held(sk));
final_p = fl6_update_dst(&fl6, opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
@@ -1106,7 +1106,7 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct ip_options_rcu *inet_opt;
inet_opt = rcu_dereference_protected(inet->inet_opt,
- sock_owned_by_user(sk));
+ lockdep_sock_is_held(sk));
if (inet_opt && inet_opt->opt.srr)
daddr = inet_opt->opt.faddr;
@@ -1933,7 +1933,8 @@ int cipso_v4_sock_setattr(struct sock *sk,
sk_inet = inet_sk(sk);
- old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
+ old = rcu_dereference_protected(sk_inet->inet_opt,
+ lockdep_sock_is_held(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
if (old)
@@ -635,7 +635,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
if (err)
break;
old = rcu_dereference_protected(inet->inet_opt,
- sock_owned_by_user(sk));
+ lockdep_sock_is_held(sk));
if (inet->is_icsk) {
struct inet_connection_sock *icsk = inet_csk(sk);
#if IS_ENABLED(CONFIG_IPV6)
@@ -1295,7 +1295,7 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname,
struct ip_options_rcu *inet_opt;
inet_opt = rcu_dereference_protected(inet->inet_opt,
- sock_owned_by_user(sk));
+ lockdep_sock_is_held(sk));
opt->optlen = 0;
if (inet_opt)
memcpy(optbuf, &inet_opt->opt,
@@ -157,7 +157,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
nexthop = daddr = usin->sin_addr.s_addr;
inet_opt = rcu_dereference_protected(inet->inet_opt,
- sock_owned_by_user(sk));
+ lockdep_sock_is_held(sk));
if (inet_opt && inet_opt->opt.srr) {
if (!daddr)
return -EINVAL;
@@ -882,8 +882,7 @@ struct tcp_md5sig_key *tcp_md5_do_lookup(const struct sock *sk,
/* caller either holds rcu_read_lock() or socket lock */
md5sig = rcu_dereference_check(tp->md5sig_info,
- sock_owned_by_user(sk) ||
- lockdep_is_held((spinlock_t *)&sk->sk_lock.slock));
+ lockdep_sock_is_held(sk));
if (!md5sig)
return NULL;
#if IS_ENABLED(CONFIG_IPV6)
@@ -928,8 +927,7 @@ int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr,
}
md5sig = rcu_dereference_protected(tp->md5sig_info,
- sock_owned_by_user(sk) ||
- lockdep_is_held(&sk->sk_lock.slock));
+ lockdep_sock_is_held(sk));
if (!md5sig) {
md5sig = kmalloc(sizeof(*md5sig), gfp);
if (!md5sig)
@@ -407,7 +407,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW))
break;
- opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
+ opt = rcu_dereference_protected(np->opt,
+ lockdep_sock_is_held(sk));
opt = ipv6_renew_options(sk, opt, optname,
(struct ipv6_opt_hdr __user *)optval,
optlen);
@@ -1123,7 +1124,8 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
struct ipv6_txoptions *opt;
lock_sock(sk);
- opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
+ opt = rcu_dereference_protected(np->opt,
+ lockdep_sock_is_held(sk));
len = ipv6_getsockopt_sticky(sk, opt, optname, optval, len);
release_sock(sk);
/* check if ipv6_getsockopt_sticky() returns err code */
@@ -234,7 +234,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
- opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
+ opt = rcu_dereference_protected(np->opt, lockdep_sock_is_held(sk));
final_p = fl6_update_dst(&fl6, opt, &final);
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
@@ -1046,7 +1046,7 @@ static int sock_fasync(int fd, struct file *filp, int on)
return -EINVAL;
lock_sock(sk);
- wq = rcu_dereference_protected(sock->wq, sock_owned_by_user(sk));
+ wq = rcu_dereference_protected(sock->wq, lockdep_sock_is_held(sk));
fasync_helper(fd, filp, on, &wq->fasync_list);
if (!wq->fasync_list)
Also make lockdep_sock_is_held accept const arguments, so we don't need to modify too many callers. Reported-by: Sasha Levin <sasha.levin@oracle.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> --- include/net/sock.h | 7 ++++--- net/dccp/ipv4.c | 2 +- net/dccp/ipv6.c | 2 +- net/ipv4/af_inet.c | 2 +- net/ipv4/cipso_ipv4.c | 3 ++- net/ipv4/ip_sockglue.c | 4 ++-- net/ipv4/tcp_ipv4.c | 8 +++----- net/ipv6/ipv6_sockglue.c | 6 ++++-- net/ipv6/tcp_ipv6.c | 2 +- net/socket.c | 2 +- 10 files changed, 20 insertions(+), 18 deletions(-)