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nvme: use struct group for generic command dwords

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This will allow the trace event to know the full size of the data
intended to be copied and silence read overflow checks.

Reported-by: John Garry <john.garry@huawei.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Keith Busch 2022-07-06 10:05:05 -07:00 committed by Christoph Hellwig
parent 73029c9b23
commit 5c629dc960
2 changed files with 3 additions and 1 deletions
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2
drivers/nvme/host/trace.h
View file

@ -69,7 +69,7 @@ TRACE_EVENT(nvme_setup_cmd,
__entry->metadata = !!blk_integrity_rq(req);
__entry->fctype = cmd->fabrics.fctype;
__assign_disk_name(__entry->disk, req->q->disk);
memcpy(__entry->cdw10, &cmd->common.cdw10,
memcpy(__entry->cdw10, &cmd->common.cdws,
sizeof(__entry->cdw10));
),
TP_printk("nvme%d: %sqid=%d, cmdid=%u, nsid=%u, flags=0x%x, meta=0x%x, cmd=(%s %s)",

2
include/linux/nvme.h
View file

@ -906,12 +906,14 @@ struct nvme_common_command {
__le32 cdw2[2];
__le64 metadata;
union nvme_data_ptr dptr;
struct_group(cdws,
__le32 cdw10;
__le32 cdw11;
__le32 cdw12;
__le32 cdw13;
__le32 cdw14;
__le32 cdw15;
);
};
struct nvme_rw_command {