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(parent: 1adc58e) | 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)
commit26c37d89f61d84dda55feefeafb4907f2a7cd944
treef74f0aacd8288855cdcbc2a3fba5739f0892d682tree | snapshot
parent1adc58ea2330cd014fde8a254480441e10ee280dcommit | 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
Domain: System / Kernel;