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[for,3.6,2/3] virtio-scsi: initialize scatterlist structure for events

Message ID 1346155154-12915-3-git-send-email-pbonzini@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Paolo Bonzini Aug. 28, 2012, 11:59 a.m. UTC 
From: Richard W.M. Jones <rjones@redhat.com>

The sg struct for events is used without being initialized.  This
triggers a BUG_ON if CONFIG_DEBUG_SG is defined.

This was reported at https://bugzilla.redhat.com/show_bug.cgi?id=847548.

Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 drivers/scsi/virtio_scsi.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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Patch

diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 3e79a2f..7554d78 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -219,7 +219,7 @@  static int virtscsi_kick_event(struct virtio_scsi *vscsi,
 	struct scatterlist sg;
 	unsigned long flags;
 
-	sg_set_buf(&sg, &event_node->event, sizeof(struct virtio_scsi_event));
+	sg_init_one(&sg, &event_node->event, sizeof(struct virtio_scsi_event));
 
 	spin_lock_irqsave(&vscsi->event_vq.vq_lock, flags);