net: Fix a data-race around netdev_budget.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Tue, 23 Aug 2022 17:46:53 +0000 (10:46 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 31 Aug 2022 15:16:44 +0000 (17:16 +0200)
commit2baeaef4dd7348fbe9c33d6245fd719bf1deca03
tree6aa0f45a6a4f4604c47d51d1c2b42ee25322040f
parent8e9e124aeb9c204198c8a60dff5e64d423356196
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: 51b0bdedb8e7 ("[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>
net/core/dev.c