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Date: Wed, 29 May 2019 20:03:05 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Sagi Grimberg <sagi@...mberg.me>, Keith Busch <keith.busch@...el.com>, Christoph Hellwig <hch@....de>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.0 112/346] nvme: set 0 capacity if namespace block size exceeds PAGE_SIZE [ Upstream commit 01fa017484ad98fccdeaab32db0077c574b6bd6f ] 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 <sagi@...mberg.me> Reviewed-by: Keith Busch <keith.busch@...el.com> Signed-off-by: Christoph Hellwig <hch@....de> Signed-off-by: Sasha Levin <sashal@...nel.org> --- 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 4c4413ad3ceb3..5b389fed6d54c 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1551,6 +1551,10 @@ static void nvme_update_disk_info(struct gendisk *disk, sector_t capacity = le64_to_cpup(&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); @@ -1561,7 +1565,8 @@ 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); -- 2.20.1
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