net: Fix a data-race around sysctl_tstamp_allow_data.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Tue, 23 Aug 2022 17:46:50 +0000 (10:46 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 24 Aug 2022 12:46:58 +0000 (13:46 +0100)
commitd2154b0afa73c0159b2856f875c6b4fe7cf6a95e
tree5e0389d5b0c6ec8db433c8d871a5e7bafe8cf65b
parent7de6d09f51917c829af2b835aba8bb5040f8e86a
net: Fix a data-race around sysctl_tstamp_allow_data.

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>
net/core/skbuff.c