From: Peter Lieven <p...@kamp.de> at least in the path via virtio-blk the maximum size is not restricted.
Cc: qemu-sta...@nongnu.org Signed-off-by: Peter Lieven <p...@kamp.de> Message-Id: <1464080368-29584-1-git-send-email...@kamp.de> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> (cherry picked from commit a6b3167fa0e825aebb5a7cd8b437b6d41584a196) Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com> --- block/iscsi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block/iscsi.c b/block/iscsi.c index 302baf8..172e6cf 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -837,6 +837,13 @@ static BlockAIOCB *iscsi_aio_ioctl(BlockDriverState *bs, return &acb->common; } + if (acb->ioh->cmd_len > SCSI_CDB_MAX_SIZE) { + error_report("iSCSI: ioctl error CDB exceeds max size (%d > %d)", + acb->ioh->cmd_len, SCSI_CDB_MAX_SIZE); + qemu_aio_unref(acb); + return NULL; + } + acb->task = malloc(sizeof(struct scsi_task)); if (acb->task == NULL) { error_report("iSCSI: Failed to allocate task for scsi command. %s", -- 1.9.1