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(parent: d5bece4) | patch
tcp: Fix a data-race around sysctl_tcp_probe_threshold.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 13 Jul 2022 20:52:04 +0000 (13:52 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:19:14 +0000 (17:19 +0200)
commitd452ce36f2d4c402fa3f5275c9677f80166e7fc6
treef4d303644f3704fdb4324ea7316911d57608aaf1tree
parentd5bece4df6090395f891110ef52a6f82d16685dbcommit | diff
tcp: Fix a data-race around sysctl_tcp_probe_threshold.

[ Upstream commit 92c0aa4175474483d6cf373314343d4e624e882a ]

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

Fixes: 6b58e0a5f32d ("ipv4: Use binary search to choose tcp PMTU probe_size")
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_output.c diff | blob | history
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