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| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-13 13:51:52 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-29 17:25:13 +0200 |
| commit | 01083e3f9868a96e678496136cef195a89e292f9 (patch) | |
| tree | f3731e6bc5bdd36ad6b3fa4e3e093f8cb59fa0a7 /net/xfrm | |
| parent | e75b73081f1ec169518773626c2ff3950476660b (diff) | |
| download | linux-stable-01083e3f9868a96e678496136cef195a89e292f9.tar.gz linux-stable-01083e3f9868a96e678496136cef195a89e292f9.tar.bz2 linux-stable-01083e3f9868a96e678496136cef195a89e292f9.zip | |
ip: Fix data-races around sysctl_ip_no_pmtu_disc.
[ Upstream commit 0968d2a441bf6afb551fd99e60fa65ed67068963 ]
While reading sysctl_ip_no_pmtu_disc, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_state.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index f7bfa1916968..b1a04a22166f 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -2619,7 +2619,7 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload) int err; if (family == AF_INET && - xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc) + READ_ONCE(xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc)) x->props.flags |= XFRM_STATE_NOPMTUDISC; err = -EPROTONOSUPPORT; |