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| author | Eric Dumazet <edumazet@google.com> | 2019-02-12 23:26:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 11:21:10 +0300 |
| commit | d1dde4137a041ff4c928e3879cb95b300d901e9e (patch) | |
| tree | c595e7ee39dab85aedc707185a26db51fce93b9e /include | |
| parent | 3d5e2bb84851df18fc99884df89b4b44a297fabf (diff) | |
| download | linux-d1dde4137a041ff4c928e3879cb95b300d901e9e.tar.xz | |
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.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 0252c0d00310..4545a9ecc219 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1272,7 +1272,7 @@ 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); |