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(parent: 9426913) | patch
ip: Fix a data-race around sysctl_ip_autobind_reuse.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 13 Jul 2022 20:51:56 +0000 (13:51 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:19:13 +0000 (17:19 +0200)
commit611ba70e5aca252ef43374dda97ed4cf1c47a07c
treeea06b51677d7b1948180f80a82aa60c676791d32tree
parent94269132d0fc9ee357e555c17a8f85fd6660649bcommit | diff
ip: Fix a data-race around sysctl_ip_autobind_reuse.

[ Upstream commit 0db232765887d9807df8bcb7b6f29b2871539eab ]

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

Fixes: 4b01a9674231 ("tcp: bind(0) remove the SO_REUSEADDR restriction when ephemeral ports are exhausted.")
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/inet_connection_sock.c diff | blob | history
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