Date: Tue, 24 Aug 2021 18:29:31 GMT From: Gordon Tetlow <gordon@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 0fe77ad6131b - releng/12.2 - Fix NVMe iovec construction for large IOs. Message-ID: <202108241829.17OITVP4024216@gitrepo.freebsd.org>
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The branch releng/12.2 has been updated by gordon: URL: https://cgit.FreeBSD.org/src/commit/?id=0fe77ad6131bcb92268d52c38b81cbc1cb6f213f commit 0fe77ad6131bcb92268d52c38b81cbc1cb6f213f Author: Gordon Tetlow <gordon@FreeBSD.org> AuthorDate: 2021-08-24 17:28:37 +0000 Commit: Gordon Tetlow <gordon@FreeBSD.org> CommitDate: 2021-08-24 17:28:37 +0000 Fix NVMe iovec construction for large IOs. Approved by: so Security: EN-21:25.bhyve --- usr.sbin/bhyve/pci_nvme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/usr.sbin/bhyve/pci_nvme.c b/usr.sbin/bhyve/pci_nvme.c index 0d95a702124e..189e8a3d8522 100644 --- a/usr.sbin/bhyve/pci_nvme.c +++ b/usr.sbin/bhyve/pci_nvme.c @@ -1968,7 +1968,7 @@ nvme_write_read_blockif(struct pci_nvme_softc *sc, /* PRP2 is pointer to a physical region page list */ while (bytes) { /* Last entry in list points to the next list */ - if (prp_list == last) { + if ((prp_list == last) && (bytes > PAGE_SIZE)) { uint64_t prp = *prp_list; prp_list = paddr_guest2host(vmctx, prp,
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