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authorRoland Dreier <roland@purestorage.com>2018-07-19 20:07:59 -0700
committerChristoph Hellwig <hch@lst.de>2018-07-20 07:43:59 -0700
commit9b382768135ee3ff282f828c906574a8478e036b (patch)
treeed4b899b3a3c4b3b8d01aff47f28ad4c5c74393f
parentfa441b71aa27d06fa79d5e7f7c329981dccd94d1 (diff)
nvme: fix handling of metadata_len for NVME_IOCTL_IO_CMD
The old code in nvme_user_cmd() passed the userspace virtual address from nvme_passthru_cmd.metadata as the length of the metadata buffer as well as the address to nvme_submit_user_cmd(). Fixes: 63263d60 ("nvme: Use metadata for passthrough commands") Signed-off-by: Roland Dreier <roland@purestorage.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
-rw-r--r--drivers/nvme/host/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 57f33733237f..bf65501e6ed6 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1233,7 +1233,7 @@ static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
effects = nvme_passthru_start(ctrl, ns, cmd.opcode);
status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c,
(void __user *)(uintptr_t)cmd.addr, cmd.data_len,
- (void __user *)(uintptr_t)cmd.metadata, cmd.metadata,
+ (void __user *)(uintptr_t)cmd.metadata, cmd.metadata_len,
0, &cmd.result, timeout);
nvme_passthru_end(ctrl, effects);