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| author | Eric Dumazet <edumazet@google.com> | 2021-07-19 02:12:18 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-19 10:11:51 -0700 |
| commit | 6f20c8adb1813467ea52c1296d52c4e95978cb2f (patch) | |
| tree | 592e5ed86c80efeea66fc3449361a17b04d7a2b4 /include | |
| parent | a0050653db957270a948ea0519763de802084180 (diff) | |
| download | linux-stable-6f20c8adb1813467ea52c1296d52c4e95978cb2f.tar.gz linux-stable-6f20c8adb1813467ea52c1296d52c4e95978cb2f.tar.bz2 linux-stable-6f20c8adb1813467ea52c1296d52c4e95978cb2f.zip | |
net/tcp_fastopen: fix data races around tfo_active_disable_stamp
tfo_active_disable_stamp is read and written locklessly.
We need to annotate these accesses appropriately.
Then, we need to perform the atomic_inc(tfo_active_disable_times)
after the timestamp has been updated, and thus add barriers
to make sure tcp_fastopen_active_should_disable() wont read
a stale timestamp.
Fixes: cf1ef3f0719b ("net/tcp_fastopen: Disable active side TFO in certain scenarios")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions