net: Fix a data-race around netdev_budget.
While reading netdev_budget, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 51b0bded ("[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>
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