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| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-12 03:15:22 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-13 14:56:49 +0300 |
| commit | bb7bb35a63b4812da8e3aff587773678e31d23e3 (patch) | |
| tree | b8c56bd45f808e96350e05003d3c72a11a41962e /net/ipv4/sysctl_net_ipv4.c | |
| parent | 6f605b57f3782114e330e108ce1903ede22ec675 (diff) | |
| download | linux-bb7bb35a63b4812da8e3aff587773678e31d23e3.tar.xz | |
icmp: Fix a data-race around sysctl_icmp_echo_ignore_all.
While reading sysctl_icmp_echo_ignore_all, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
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 cd448cdd3b38..64682a01914a 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -599,6 +599,8 @@ static struct ctl_table ipv4_net_table[] = { .maxlen = sizeof(u8), .mode = 0644, .proc_handler = proc_dou8vec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE }, { .procname = "icmp_echo_enable_probe", |