Commit 75cb0709 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

Revert "net: defer call to cgroup_sk_alloc()"

This reverts commit fbb1fb4a.

This was not the proper fix, lets cleanly revert it, so that
following patch can be carried to stable versions.

sock_cgroup_ptr() callers do not expect a NULL return value.
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent befc7a33
...@@ -5709,6 +5709,17 @@ void cgroup_sk_alloc(struct sock_cgroup_data *skcd) ...@@ -5709,6 +5709,17 @@ void cgroup_sk_alloc(struct sock_cgroup_data *skcd)
if (cgroup_sk_alloc_disabled) if (cgroup_sk_alloc_disabled)
return; return;
/* Socket clone path */
if (skcd->val) {
/*
* We might be cloning a socket which is left in an empty
* cgroup and the cgroup might have already been rmdir'd.
* Don't use cgroup_get_live().
*/
cgroup_get(sock_cgroup_ptr(skcd));
return;
}
rcu_read_lock(); rcu_read_lock();
while (true) { while (true) {
......
...@@ -1680,7 +1680,6 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority) ...@@ -1680,7 +1680,6 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
/* sk->sk_memcg will be populated at accept() time */ /* sk->sk_memcg will be populated at accept() time */
newsk->sk_memcg = NULL; newsk->sk_memcg = NULL;
memset(&newsk->sk_cgrp_data, 0, sizeof(newsk->sk_cgrp_data));
atomic_set(&newsk->sk_drops, 0); atomic_set(&newsk->sk_drops, 0);
newsk->sk_send_head = NULL; newsk->sk_send_head = NULL;
...@@ -1719,6 +1718,8 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority) ...@@ -1719,6 +1718,8 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
newsk->sk_incoming_cpu = raw_smp_processor_id(); newsk->sk_incoming_cpu = raw_smp_processor_id();
atomic64_set(&newsk->sk_cookie, 0); atomic64_set(&newsk->sk_cookie, 0);
cgroup_sk_alloc(&newsk->sk_cgrp_data);
/* /*
* Before updating sk_refcnt, we must commit prior changes to memory * Before updating sk_refcnt, we must commit prior changes to memory
* (Documentation/RCU/rculist_nulls.txt for details) * (Documentation/RCU/rculist_nulls.txt for details)
......
...@@ -26,8 +26,6 @@ ...@@ -26,8 +26,6 @@
#include <net/tcp.h> #include <net/tcp.h>
#include <net/sock_reuseport.h> #include <net/sock_reuseport.h>
#include <net/addrconf.h> #include <net/addrconf.h>
#include <net/cls_cgroup.h>
#include <net/netprio_cgroup.h>
#ifdef INET_CSK_DEBUG #ifdef INET_CSK_DEBUG
const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n"; const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n";
...@@ -478,9 +476,6 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err, bool kern) ...@@ -478,9 +476,6 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err, bool kern)
spin_unlock_bh(&queue->fastopenq.lock); spin_unlock_bh(&queue->fastopenq.lock);
} }
mem_cgroup_sk_alloc(newsk); mem_cgroup_sk_alloc(newsk);
cgroup_sk_alloc(&newsk->sk_cgrp_data);
sock_update_classid(&newsk->sk_cgrp_data);
sock_update_netprioidx(&newsk->sk_cgrp_data);
out: out:
release_sock(sk); release_sock(sk);
if (req) if (req)
......
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