diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/virt/coco/sev-guest/sev-guest.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c index 910a1de0d5a7..d186ae55cf63 100644 --- a/drivers/virt/coco/sev-guest/sev-guest.c +++ b/drivers/virt/coco/sev-guest/sev-guest.c @@ -176,6 +176,7 @@ static int get_ext_report(struct snp_guest_dev *snp_dev, struct snp_guest_reques struct snp_guest_req req = {}; int ret, npages = 0, resp_len; sockptr_t certs_address; + u64 pfn; if (sockptr_is_null(io->req_data) || sockptr_is_null(io->resp_data)) return -EINVAL; @@ -215,10 +216,11 @@ static int get_ext_report(struct snp_guest_dev *snp_dev, struct snp_guest_reques if (!req.certs_data) return -ENOMEM; + pfn = PHYS_PFN(virt_to_phys(req.certs_data)); ret = set_memory_decrypted((unsigned long)req.certs_data, npages); if (ret) { pr_err("failed to mark page shared, ret=%d\n", ret); - free_pages_exact(req.certs_data, npages << PAGE_SHIFT); + snp_leak_pages(pfn, npages); return -EFAULT; } @@ -272,10 +274,12 @@ e_free: kfree(report_resp); e_free_data: if (npages) { - if (set_memory_encrypted((unsigned long)req.certs_data, npages)) + if (set_memory_encrypted((unsigned long)req.certs_data, npages)) { WARN_ONCE(ret, "failed to restore encryption mask (leak it)\n"); - else + snp_leak_pages(pfn, npages); + } else { free_pages_exact(req.certs_data, npages << PAGE_SHIFT); + } } return ret; } |