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hw/nvme: fix verification of number of ruhis 

Fix a off-by-one error when verifying the number of reclaim unit handle
identifiers specified in fdp.ruhs. To make the fix nicer, move the
verification of the fdp.nruh parameter to an earlier point.

Fixes: 73064edfb8 ("hw/nvme: flexible data placement emulation")
Reviewed-by: Jesper Wendel Devantier <j.devantier@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Klaus Jensen 2023-05-24 11:28:34 +02:00
parent 381ab99d85
commit 3ae8a54a08
2 changed files with 5 additions and 5 deletions
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4
hw/nvme/ns.c
View File

@ -438,9 +438,7 @@ static bool nvme_ns_init_fdp(NvmeNamespace *ns, Error **errp)
/* parse the placement handle identifiers */
while ((token = qemu_strsep(&p, ";")) != NULL) {
ns->fdp.nphs += 1;
if (ns->fdp.nphs > NVME_FDP_MAXPIDS ||
ns->fdp.nphs == endgrp->fdp.nruh) {
if (ns->fdp.nphs++ == endgrp->fdp.nruh) {
error_setg(errp, "too many placement handles");
free(r);
return false;

6
hw/nvme/subsys.c
View File

@ -158,8 +158,10 @@ static bool nvme_subsys_setup_fdp(NvmeSubsystem *subsys, Error **errp)
endgrp->fdp.nrg = subsys->params.fdp.nrg;
if (!subsys->params.fdp.nruh) {
error_setg(errp, "fdp.nruh must be non-zero");
if (!subsys->params.fdp.nruh ||
subsys->params.fdp.nruh > NVME_FDP_MAXPIDS) {
error_setg(errp, "fdp.nruh must be non-zero and less than %u",
NVME_FDP_MAXPIDS);
return false;
}