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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 /net
parent7c0db24cc431e2196d98a5d5ddaa9088e2fcbfe5 (diff)
downloadlinux-5bf325a53202b8728cf7013b72688c46071e212e.tar.bz2
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 'net')
-rw-r--r--net/core/sock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 6aa2e7e0b4fb..bc3512f230a3 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2380,7 +2380,7 @@ 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;