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hw/block/nvme: make sure ncqr and nsqr is valid

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0xffff is not an allowed value for NCQR and NSQR in Set Features on
Number of Queues.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Acked-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Message-Id: <20200706061303.246057-14-its@irrelevant.dk>
This commit is contained in:
Klaus Jensen 2020-07-06 08:12:58 +02:00
parent 7c46310d29
commit 9932551154
1 changed files with 8 additions and 0 deletions
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8
hw/block/nvme.c
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@ -1310,6 +1310,14 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req)
blk_set_enable_write_cache(n->conf.blk, dw11 & 1);
break;
case NVME_NUMBER_OF_QUEUES:
/*
* NVMe v1.3, Section 5.21.1.7: 0xffff is not an allowed value for NCQR
* and NSQR.
*/
if ((dw11 & 0xffff) == 0xffff || ((dw11 >> 16) & 0xffff) == 0xffff) {
return NVME_INVALID_FIELD | NVME_DNR;
}
trace_pci_nvme_setfeat_numq((dw11 & 0xFFFF) + 1,
((dw11 >> 16) & 0xFFFF) + 1,
n->params.max_ioqpairs,