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(parent: 01083e3) | patch
ip: Fix data-races around sysctl_ip_fwd_use_pmtu.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 13 Jul 2022 20:51:53 +0000 (13:51 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:25:13 +0000 (17:25 +0200)
commit93fbc06da1d819f3981a7bd7928c3641ea67b364
tree1c1ce46fbd64d4fe7bb29b11bcf79b322a99d9e0tree | snapshot
parent01083e3f9868a96e678496136cef195a89e292f9commit | diff
ip: Fix data-races around sysctl_ip_fwd_use_pmtu.

[ Upstream commit 60c158dc7b1f0558f6cadd5b50d0386da0000d50 ]

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

Fixes: f87c10a8aa1e ("ipv4: introduce ip_dst_mtu_maybe_forward and protect forwarding path against pmtu spoofing")
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/ip.h diff | blob | history
net/ipv4/route.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git