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authorEric Dumazet <edumazet@google.com>2019-02-12 12:26:27 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-12-05 15:27:07 +0100
commite6bcac89af46d7077184cd900befe7678df077f2 (patch)
treef0eb961aa29bb16b64692ae3828a1ab64a1f22da /include
parent2798fd0b78ec9a9592dfccbfd710c5ee069a6b9b (diff)
net: fix possible overflow in __sk_mem_raise_allocated()
[ Upstream commit 5bf325a53202b8728cf7013b72688c46071e212e ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
-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 5ed4786a2058..de4434284a34 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1282,7 +1282,7 @@ static inline void sk_sockets_allocated_inc(struct sock *sk)
percpu_counter_inc(prot->sockets_allocated);
}
-static inline int
+static inline u64
sk_sockets_allocated_read_positive(struct sock *sk)
{
struct proto *prot = sk->sk_prot;