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authorEric Dumazet <edumazet@google.com>2019-02-12 12:26:27 -0800
committerDavid S. Miller <davem@davemloft.net>2019-02-13 21:05:18 -0800
commit5bf325a53202b8728cf7013b72688c46071e212e (patch)
tree2d1696d8f6e9b45265fbb65c1d9312b7e0c89bb5 /include/net/sock.h
parentdsa: mv88e6xxx: Ensure all pending interrupts are handled prior to exit (diff)
downloadlinux-dev-5bf325a53202b8728cf7013b72688c46071e212e.tar.xz
linux-dev-5bf325a53202b8728cf7013b72688c46071e212e.zip
net: fix possible overflow in __sk_mem_raise_allocated()
With many active TCP sockets, fat TCP sockets could fool __sk_mem_raise_allocated() thanks to an overflow. They would increase their share of the memory, instead of decreasing it. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sock.h')
-rw-r--r--include/net/sock.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 2b229f7be8eb..f43f935cb113 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1277,7 +1277,7 @@ static inline void sk_sockets_allocated_inc(struct sock *sk)
percpu_counter_inc(sk->sk_prot->sockets_allocated);
}
-static inline int
+static inline u64
sk_sockets_allocated_read_positive(struct sock *sk)
{
return percpu_counter_read_positive(sk->sk_prot->sockets_allocated);