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| author | Kuniyuki Iwashima <[email protected]> | 2022-07-12 00:15:31 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2022-07-13 11:56:49 +0000 |
| commit | 12b8d9ca7e678abc48195294494f1815b555d658 (patch) | |
| tree | eb0cf7b142f2ba30550f218d87781524b11ee14b /net/ipv4/sysctl_net_ipv4.c | |
| parent | tcp: Fix data-races around sysctl_tcp_ecn. (diff) | |
| download | kernel-12b8d9ca7e678abc48195294494f1815b555d658.tar.gz kernel-12b8d9ca7e678abc48195294494f1815b555d658.zip | |
tcp: Fix a data-race around sysctl_tcp_ecn_fallback.
While reading sysctl_tcp_ecn_fallback, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes: 492135557dc0 ("tcp: add rfc3168, section 6.1.1.1. fallback")
Signed-off-by: Kuniyuki Iwashima <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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 5e308c1715af..108fd86f2718 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -685,6 +685,8 @@ static struct ctl_table ipv4_net_table[] = { .maxlen = sizeof(u8), .mode = 0644, .proc_handler = proc_dou8vec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, }, { .procname = "ip_dynaddr", |