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| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-12 03:15:20 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-13 14:56:49 +0300 |
| commit | 7d1025e559782b58824b36cb8ad547a69f2e4b31 (patch) | |
| tree | f6b3b3bb5f284a05494be81877eadaf0d7ab68a5 /net/ipv4/inet_timewait_sock.c | |
| parent | 7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18 (diff) | |
| download | linux-7d1025e559782b58824b36cb8ad547a69f2e4b31.tar.xz | |
sysctl: Fix data-races in proc_dointvec_ms_jiffies().
A sysctl variable 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.
This patch changes proc_dointvec_ms_jiffies() to use READ_ONCE() and
WRITE_ONCE() internally to fix data-races on the sysctl side. For now,
proc_dointvec_ms_jiffies() itself is tolerant to a data-race, but we still
need to add annotations on the other subsystem's side.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_timewait_sock.c')
0 files changed, 0 insertions, 0 deletions