diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-08-23 20:46:50 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-31 18:18:08 +0300 |
| commit | 6fc89f990716ec516dfd817c785daab5be6d98aa (patch) | |
| tree | 26037d36216d8faeb35a938c63cb7675e5b6a10c /net | |
| parent | 764352456e55004a8f7b23a71226e3e6a42843ad (diff) | |
| download | linux-6fc89f990716ec516dfd817c785daab5be6d98aa.tar.xz | |
net: Fix a data-race around sysctl_tstamp_allow_data.
[ Upstream commit d2154b0afa73c0159b2856f875c6b4fe7cf6a95e ]
While reading sysctl_tstamp_allow_data, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes: b245be1f4db1 ("net-timestamp: no-payload only sysctl")
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')
| -rw-r--r-- | net/core/skbuff.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 5b3559cb1d82..bebf58464d66 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -4772,7 +4772,7 @@ static bool skb_may_tx_timestamp(struct sock *sk, bool tsonly) { bool ret; - if (likely(sysctl_tstamp_allow_data || tsonly)) + if (likely(READ_ONCE(sysctl_tstamp_allow_data) || tsonly)) return true; read_lock_bh(&sk->sk_callback_lock); |