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authorKuniyuki Iwashima <kuniyu@amazon.com>2022-07-12 03:15:24 +0300
committerDavid S. Miller <davem@davemloft.net>2022-07-13 14:56:49 +0300
commit66484bb98ed2dfa1dda37a32411483d8311ac269 (patch)
treeeeb5af155c8f1ac8c521627eb13e7b5bb2394064 /net/ipv4/sysctl_net_ipv4.c
parent4a2f7083cc6cb72dade9a63699ca352fad26d1cd (diff)
downloadlinux-66484bb98ed2dfa1dda37a32411483d8311ac269.tar.xz
icmp: Fix a data-race around sysctl_icmp_echo_ignore_broadcasts.
While reading sysctl_icmp_echo_ignore_broadcasts, 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.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 64682a01914a..cb53476a292e 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -617,6 +617,8 @@ 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_ignore_bogus_error_responses",