net: Fix a data-race around netdev_budget.
[ Upstream commit 2e0c42374ee32e72948559d2ae2f7ba3dc6b977c ]
While reading netdev_budget, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes: 51b0bdedb8
("[NET]: Separate two usages of netdev_max_backlog.")
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>
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@ -6394,7 +6394,7 @@ static __latent_entropy void net_rx_action(struct softirq_action *h)
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struct softnet_data *sd = this_cpu_ptr(&softnet_data);
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struct softnet_data *sd = this_cpu_ptr(&softnet_data);
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unsigned long time_limit = jiffies +
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unsigned long time_limit = jiffies +
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usecs_to_jiffies(netdev_budget_usecs);
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usecs_to_jiffies(netdev_budget_usecs);
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int budget = netdev_budget;
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int budget = READ_ONCE(netdev_budget);
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LIST_HEAD(list);
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LIST_HEAD(list);
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LIST_HEAD(repoll);
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LIST_HEAD(repoll);
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