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(parent: 4832397) | patch
tcp: Fix a data-race around sysctl_tcp_comp_sack_slack_ns.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Fri, 22 Jul 2022 18:22:02 +0000 (11:22 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Aug 2022 10:00:48 +0000 (12:00 +0200)
commitd2476f2059c240b016e815f27b1a5a7bdb79effa
treea1af02d98b2507847ff5dcd74fdfb96a4418fa8ctree
parent48323978912754eb589edd2dfd4fb5f5140a2cddcommit | diff
tcp: Fix a data-race around sysctl_tcp_comp_sack_slack_ns.

[ Upstream commit 22396941a7f343d704738360f9ef0e6576489d43 ]

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

Fixes: a70437cc09a1 ("tcp: add hrtimer slack to sack compression")
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>
net/ipv4/tcp_input.c diff | blob | history
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