icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Tue, 12 Jul 2022 00:15:26 +0000 (17:15 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 13 Jul 2022 11:56:49 +0000 (12:56 +0100)
commitd2efabce81db7eed1c98fa1a3f203f0edd738ac3
tree2b2f896100de279d80a8129c944c9aa8d049510e
parentb04f9b7e85c7d7aecbada620e8759a662af068d3
icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr.

While reading sysctl_icmp_errors_use_inbound_ifaddr, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its reader.

Fixes: 1c2fb7f93cb2 ("[IPV4]: Sysctl configurable icmp error source address.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/icmp.c
net/ipv4/sysctl_net_ipv4.c