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authorTetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>2021-11-15 13:16:56 +0300
committerDavid S. Miller <davem@davemloft.net>2021-11-15 17:27:39 +0300
commit938cca9e4109b30ee1d476904538225a825e54eb (patch)
tree9df7f8766c30609396f9e852fe9ef703b834303a
parent271351d255b09e39c7f6437738cba595f9b235be (diff)
downloadlinux-938cca9e4109b30ee1d476904538225a825e54eb.tar.xz
sock: fix /proc/net/sockstat underflow in sk_clone_lock()
sk_clone_lock() needs to call sock_inuse_add(1) before entering the sk_free_unlock_clone() error path, for __sk_free() from sk_free() from sk_free_unlock_clone() calls sock_inuse_add(-1). Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Fixes: 648845ab7e200993 ("sock: Move the socket inuse to namespace.") Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/sock.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 8f2b2f2c0e7b..41e91d0f7061 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2124,8 +2124,10 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
newsk->sk_prot_creator = prot;
/* SANITY */
- if (likely(newsk->sk_net_refcnt))
+ if (likely(newsk->sk_net_refcnt)) {
get_net(sock_net(newsk));
+ sock_inuse_add(sock_net(newsk), 1);
+ }
sk_node_init(&newsk->sk_node);
sock_lock_init(newsk);
bh_lock_sock(newsk);
@@ -2197,8 +2199,6 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
newsk->sk_err_soft = 0;
newsk->sk_priority = 0;
newsk->sk_incoming_cpu = raw_smp_processor_id();
- if (likely(newsk->sk_net_refcnt))
- sock_inuse_add(sock_net(newsk), 1);
/* Before updating sk_refcnt, we must commit prior changes to memory
* (Documentation/RCU/rculist_nulls.rst for details)