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(parent: 6842c94) | 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 10:03:52 +0000 (12:03 +0200)
commit34c9977b4dcaa22a86dab752284329f746925613
tree8560670cc36dad56ffa0ecc721bfc9026219d560tree | snapshot
parent6842c94de9d5b25e0fbfa3402f4c3d6a382f7faecommit | 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
Domain: System / Kernel;