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virtio-blk: fix disabled mode

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We must not call virtio_blk_data_plane_notify if dataplane is
disabled: we would hit a segmentation fault in notify_guest_bh as
s->guest_notifier has not been setup and is NULL.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-04-06 12:16:23 +02:00 • committed by Michael S. Tsirkin
parent 2b2cbcadc1
commit eb41cf78fc
3 changed files with 5 additions and 5 deletions
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1
include/hw/virtio/virtio-blk.h
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@ -53,6 +53,7 @@ typedef struct VirtIOBlock {
unsigned short sector_mask;
bool original_wce;
VMChangeStateEntry *change;
bool dataplane_disabled;
bool dataplane_started;
struct VirtIOBlockDataPlane *dataplane;
} VirtIOBlock;