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(parent: 0968d2a) | 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)
committerDavid S. Miller <davem@davemloft.net>
Fri, 15 Jul 2022 10:49:55 +0000 (11:49 +0100)
commit60c158dc7b1f0558f6cadd5b50d0386da0000d50
tree7f70607a57abd8881ac567ffdeb7f67c0960d47etree | snapshot
parent0968d2a441bf6afb551fd99e60fa65ed67068963commit | diff
ip: Fix data-races around sysctl_ip_fwd_use_pmtu.

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>
include/net/ip.h diff | blob | history
net/ipv4/route.c diff | blob | history
Domain: System / Kernel;