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| author | Eric Dumazet <edumazet@google.com> | 2017-03-15 13:21:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-15 15:37:45 -0700 |
| commit | 22a0e18eac7a9e986fec76c60fa4a2926d1291e2 (patch) | |
| tree | 3fc462095b2f36f16a10c583fa51f6682680f913 /net/core | |
| parent | 622c36f143fc9566ba49d7cec994c2da1182d9e2 (diff) | |
| download | linux-22a0e18eac7a9e986fec76c60fa4a2926d1291e2.tar.gz linux-22a0e18eac7a9e986fec76c60fa4a2926d1291e2.tar.bz2 linux-22a0e18eac7a9e986fec76c60fa4a2926d1291e2.zip | |
net: properly release sk_frag.page
I mistakenly added the code to release sk->sk_frag in
sk_common_release() instead of sk_destruct()
TCP sockets using sk->sk_allocation == GFP_ATOMIC do no call
sk_common_release() at close time, thus leaking one (order-3) page.
iSCSI is using such sockets.
Fixes: 5640f7685831 ("net: use a per task frag allocator")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/sock.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index a96d5f7a5734..acb0d4137499 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1442,6 +1442,11 @@ static void __sk_destruct(struct rcu_head *head) pr_debug("%s: optmem leakage (%d bytes) detected\n", __func__, atomic_read(&sk->sk_omem_alloc)); + if (sk->sk_frag.page) { + put_page(sk->sk_frag.page); + sk->sk_frag.page = NULL; + } + if (sk->sk_peer_cred) put_cred(sk->sk_peer_cred); put_pid(sk->sk_peer_pid); @@ -2787,11 +2792,6 @@ void sk_common_release(struct sock *sk) sk_refcnt_debug_release(sk); - if (sk->sk_frag.page) { - put_page(sk->sk_frag.page); - sk->sk_frag.page = NULL; - } - sock_put(sk); } EXPORT_SYMBOL(sk_common_release); |