ptr_ring: disallow lockless __ptr_ring_full

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Similar to bcecb4bbf8 ("net: ptr_ring: otherwise safe empty checks can
overrun array bounds") a lockless use of __ptr_ring_full might
cause an out of bounds access.

We can fix this, but it's easier to just disallow lockless
__ptr_ring_full for now.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Michael S. Tsirkin 2018-01-26 01:36:32 +02:00 • committed by David S. Miller

parent 88fae87327

commit 84328342a7

1 changed files with 4 additions and 3 deletions

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7

include/linux/ptr_ring.h

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