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| author | Eric Dumazet <edumazet@google.com> | 2019-02-12 12:26:27 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 09:21:10 +0100 |
| commit | d1dde4137a041ff4c928e3879cb95b300d901e9e (patch) | |
| tree | c595e7ee39dab85aedc707185a26db51fce93b9e /net | |
| parent | 3d5e2bb84851df18fc99884df89b4b44a297fabf (diff) | |
| download | linux-stable-d1dde4137a041ff4c928e3879cb95b300d901e9e.tar.gz linux-stable-d1dde4137a041ff4c928e3879cb95b300d901e9e.tar.bz2 linux-stable-d1dde4137a041ff4c928e3879cb95b300d901e9e.zip | |
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 'net')
| -rw-r--r-- | net/core/sock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index ba4f843cdd1d..bbde5f6a7dc9 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2435,7 +2435,7 @@ int __sk_mem_raise_allocated(struct sock *sk, int size, int amt, int kind) } if (sk_has_memory_pressure(sk)) { - int alloc; + u64 alloc; if (!sk_under_memory_pressure(sk)) return 1; |