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netrom: Fix a data-race around sysctl_netrom_transport_requested_window_size
[ Upstream commita2e7068414
] We need to protect the reader reading the sysctl value because the value can be changed concurrently. Fixes:1da177e4c3
("Linux-2.6.12-rc2") Signed-off-by: Jason Xing <kernelxing@tencent.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 1 additions and 1 deletions
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@ -462,7 +462,7 @@ static int nr_create(struct net *net, struct socket *sock, int protocol,
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msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_busy_delay));
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nr->idle =
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msecs_to_jiffies(sysctl_netrom_transport_no_activity_timeout);
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nr->window = sysctl_netrom_transport_requested_window_size;
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nr->window = READ_ONCE(sysctl_netrom_transport_requested_window_size);
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nr->bpqext = 1;
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nr->state = NR_STATE_0;
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