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(parent: 782e067) | patch
virtio_balloon: prevent pfn array overflow
authorMichael S. Tsirkin <mst@redhat.com>
Thu, 6 Feb 2020 07:40:58 +0000 (02:40 -0500)
committerMichael S. Tsirkin <mst@redhat.com>
Thu, 6 Feb 2020 08:40:26 +0000 (03:40 -0500)
commit6e9826e77249355c09db6ba41cd3f84e89f4b614
tree4834849240c6ba8f5fc5be47f3bfd378b40be720tree | snapshot
parent782e067dba52de989a445f1bfa4bb770abb34480commit | diff
virtio_balloon: prevent pfn array overflow

Make sure, at build time, that pfn array is big enough to hold a single
page.  It happens to be true since the PAGE_SHIFT value at the moment is
20, which is 1M - exactly 256 4K balloon pages.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
drivers/virtio/virtio_balloon.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)