diff options
author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-11 17:15:30 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2022-07-13 12:56:49 +0100 |
commit | 4785a66702f086cf2ea84bdbe6ec921f274bd9f2 (patch) | |
tree | 28f36a4bf5f7825aacde839ad3286e1c1cec8a84 /net/ipv4/sysctl_net_ipv4.c | |
parent | 1dace014928e6e385363032d359a04dee9158af0 (diff) | |
download | linux-4785a66702f086cf2ea84bdbe6ec921f274bd9f2.tar.gz |
tcp: Fix data-races around sysctl_tcp_ecn.
While reading sysctl_tcp_ecn, it 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/sysctl_net_ipv4.c')
-rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 66159d49a575..5e308c1715af 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -676,6 +676,8 @@ static struct ctl_table ipv4_net_table[] = { .maxlen = sizeof(u8), .mode = 0644, .proc_handler = proc_dou8vec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_TWO, }, { .procname = "tcp_ecn_fallback", |