diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-18 20:26:42 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-20 12:14:49 +0300 |
| commit | 9b55c20f83369dd54541d9ddbe3a018a8377f451 (patch) | |
| tree | 47fb5876d7c291eda26016d3711002bfb19f9bf4 /include | |
| parent | 8895a9c2ac76fb9d3922fed4fe092c8ec5e5cccc (diff) | |
| download | linux-9b55c20f83369dd54541d9ddbe3a018a8377f451.tar.xz | |
ip: Fix data-races around sysctl_ip_prot_sock.
sysctl_ip_prot_sock is accessed concurrently, and there is always a chance
of data-race. So, all readers and writers need some basic protection to
avoid load/store-tearing.
Fixes: 4548b683b781 ("Introduce a sysctl that modifies the value of PROT_SOCK.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ip.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index 4a15b6bcb4b8..1c979fd1904c 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -357,7 +357,7 @@ static inline bool sysctl_dev_name_is_allowed(const char *name) static inline bool inet_port_requires_bind_service(struct net *net, unsigned short port) { - return port < net->ipv4.sysctl_ip_prot_sock; + return port < READ_ONCE(net->ipv4.sysctl_ip_prot_sock); } #else |