From 01fa017484ad98fccdeaab32db0077c574b6bd6f Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Mon, 11 Mar 2019 15:02:25 -0700 Subject: [PATCH] nvme: set 0 capacity if namespace block size exceeds PAGE_SIZE If our target exposed a namespace with a block size that is greater than PAGE_SIZE, set 0 capacity on the namespace as we do not support it. This issue encountered when the nvmet namespace was backed by a tempfile. Signed-off-by: Sagi Grimberg Reviewed-by: Keith Busch Signed-off-by: Christoph Hellwig --- drivers/nvme/host/core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 248ff3b48041..3dd043aa6d1f 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1591,6 +1591,10 @@ static void nvme_update_disk_info(struct gendisk *disk, sector_t capacity = le64_to_cpu(id->nsze) << (ns->lba_shift - 9); unsigned short bs = 1 << ns->lba_shift; + if (ns->lba_shift > PAGE_SHIFT) { + /* unsupported block size, set capacity to 0 later */ + bs = (1 << 9); + } blk_mq_freeze_queue(disk->queue); blk_integrity_unregister(disk); @@ -1601,7 +1605,8 @@ static void nvme_update_disk_info(struct gendisk *disk, if (ns->ms && !ns->ext && (ns->ctrl->ops->flags & NVME_F_METADATA_SUPPORTED)) nvme_init_integrity(disk, ns->ms, ns->pi_type); - if (ns->ms && !nvme_ns_has_pi(ns) && !blk_get_integrity(disk)) + if ((ns->ms && !nvme_ns_has_pi(ns) && !blk_get_integrity(disk)) || + ns->lba_shift > PAGE_SHIFT) capacity = 0; set_capacity(disk, capacity); -- 2.45.2