Jason Wang 2b23a36517 vhost: make sure used idx is seen before log in vhost_add_used_n() ...

[ Upstream commit 841df92241 ]

We miss a write barrier that guarantees used idx is updated and seen
before log. This will let userspace sync and copy used ring before
used idx is update. Fix this by adding a barrier before log_write().

Fixes: 8dd014adfe ("vhost-net: mergeable buffers support")
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-01-09 17:38:34 +01:00

..

Kconfig

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Kconfig.vringh

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Makefile

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net.c

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scsi.c

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test.c

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test.h

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vhost.c

vhost: make sure used idx is seen before log in vhost_add_used_n()

2019-01-09 17:38:34 +01:00

vhost.h

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vringh.c

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vsock.c

vhost/vsock: fix reset orphans race with close timeout

2018-12-21 14:15:23 +01:00