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bhyve: validate NVMe deallocate range values

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For NVMe emulation, validate the Data Set Management LBA ranges do not
exceed the capacity of the backing storage. If they do, return an "LBA
Out of Range" error.

Fixes UNH Test 2.2.3

Tested by:	Jason Tubnor
MFC after:	2 weeks
Differential Revision: https://reviews.freebsd.org/D24893
This commit is contained in:
Chuck Tuffli 2020-06-29 00:31:58 +00:00
parent 73cd73c0b8
commit ae638f2bd5
1 changed files with 9 additions and 0 deletions
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9
usr.sbin/bhyve/pci_nvme.c
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@ -1877,6 +1877,11 @@ nvme_opc_dataset_mgmt(struct pci_nvme_softc *sc,
nvme_prp_memcpy(sc->nsc_pi->pi_vmctx, cmd->prp1, cmd->prp2,
(uint8_t *)range, NVME_MAX_DSM_TRIM, NVME_COPY_FROM_PRP);
if ((range[0].starting_lba * sectsz) > nvstore->size) {
pci_nvme_status_genc(status, NVME_SC_LBA_OUT_OF_RANGE);
goto out;
}
/*
* If the request is for more than a single range, store
* the ranges in the br_iov. Optimize for the common case
@ -1896,6 +1901,10 @@ nvme_opc_dataset_mgmt(struct pci_nvme_softc *sc,
struct iovec *iov = req->io_req.br_iov;
for (r = 0; r <= nr; r++) {
if ((range[r].starting_lba * sectsz) > nvstore->size) {
pci_nvme_status_genc(status, NVME_SC_LBA_OUT_OF_RANGE);
goto out;
}
iov[r].iov_base = (void *)(range[r].starting_lba * sectsz);
iov[r].iov_len = range[r].length * sectsz;
}