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(parent: 34c9977) | patch
tcp: Fix a data-race around sysctl_tcp_comp_sack_nr.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Fri, 22 Jul 2022 18:22:03 +0000 (11:22 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Aug 2022 10:03:52 +0000 (12:03 +0200)
commit4cc070e0ef2d212780028b62d8eb286c098c3e9c
treea9f80f1286879386c8e9084c603542a91793ab2atree | snapshot
parent34c9977b4dcaa22a86dab752284329f746925613commit | diff
tcp: Fix a data-race around sysctl_tcp_comp_sack_nr.

[ Upstream commit 79f55473bfc8ac51bd6572929a679eeb4da22251 ]

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

Fixes: 9c21d2fc41c0 ("tcp: add tcp_comp_sack_nr sysctl")
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;