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(parent: 64fca22) | patch
net: Fix a data-race around sysctl_net_busy_poll.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Tue, 23 Aug 2022 17:46:51 +0000 (10:46 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 5 Sep 2022 08:23:55 +0000 (10:23 +0200)
commit7a34fb980e4d69596cd07781620e63d682f9054f
tree5a918f934b7c9ab0ea0f4596197b36f216b49a3atree | snapshot (tar.gz zip)
parent64fca2207e068502dd2463ebb8d192083df1f4f8commit | diff
net: Fix a data-race around sysctl_net_busy_poll.

[ Upstream commit c42b7cddea47503411bfb5f2f93a4154aaffa2d9 ]

While reading sysctl_net_busy_poll, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 060212928670 ("net: add low latency socket poll")
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>
include/net/busy_poll.h diff | blob | blame | history