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| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-08-23 20:46:44 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-08-24 15:46:57 +0300 |
| commit | 1227c1771dd2ad44318aa3ab9e3a293b3f34ff2a (patch) | |
| tree | 6e6eef2a68c70de96ec16d26192138ea296972bf /net/ipv4/ip_output.c | |
| parent | c624c58e08b15105662b9ab9be23d14a6b945a49 (diff) | |
| download | linux-1227c1771dd2ad44318aa3ab9e3a293b3f34ff2a.tar.xz | |
net: Fix data-races around sysctl_[rw]mem_(max|default).
While reading sysctl_[rw]mem_(max|default), they can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_output.c')
| -rw-r--r-- | net/ipv4/ip_output.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index d7bd1daf022b..04e2034f2f8e 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1730,7 +1730,7 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb, sk->sk_protocol = ip_hdr(skb)->protocol; sk->sk_bound_dev_if = arg->bound_dev_if; - sk->sk_sndbuf = sysctl_wmem_default; + sk->sk_sndbuf = READ_ONCE(sysctl_wmem_default); ipc.sockc.mark = fl4.flowi4_mark; err = ip_append_data(sk, &fl4, ip_reply_glue_bits, arg->iov->iov_base, len, 0, &ipc, &rt, MSG_DONTWAIT); |