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(parent: 7852295) | patch
tcp: Fix data-races around sysctl_tcp_syncookies.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Fri, 15 Jul 2022 17:17:47 +0000 (10:17 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:25:18 +0000 (17:25 +0200)
commit10a9ba97a40490f586a566c83e5774474db8bdd7
treed29005c6fbee87fa700fa6e0824247a789cc47ddtree | snapshot
parent78522951d71844aeb851be35e882bdc993f359ebcommit | diff
tcp: Fix data-races around sysctl_tcp_syncookies.

[ Upstream commit f2e383b5bb6bbc60a0b94b87b3e49a2b1aefd11e ]

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

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
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/core/filter.c diff | blob | history
net/ipv4/syncookies.c diff | blob | history
net/ipv4/tcp_input.c diff | blob | history
net/ipv6/syncookies.c diff | blob | history
Domain: System / Kernel;