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(parent: 311b8cd) | patch
netdevsim: take rtnl_lock when assigning num_vfs
authorJakub Kicinski <kuba@kernel.org>
Sat, 30 Oct 2021 23:15:01 +0000 (16:15 -0700)
committerDavid S. Miller <davem@davemloft.net>
Mon, 1 Nov 2021 13:29:41 +0000 (13:29 +0000)
commitc02b189de80956201db4aee0cfa94bf32815a973
treef74f0aacd8288855cdcbc2a3fba5739f0892d682tree | snapshot
parent311b8cd8198294cd1cabd7d23d71f9c23c9e1070commit | diff
netdevsim: take rtnl_lock when assigning num_vfs

Legacy VF NDOs look at num_vfs and then based on that
index into vfconfig. If we don't rtnl_lock() num_vfs
may get set to 0 and vfconfig freed/replaced while
the NDO is running.

We don't need to protect replacing vfconfig since it's
only done when num_vfs is 0.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/netdevsim/bus.c diff | blob | history
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