diff options
| author | Joel Stanley <joel@jms.id.au> | 2019-05-08 16:48:45 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2019-05-08 16:48:48 +0300 |
| commit | d09fc0c4bdfbcbe251df247b5a94e2a07dec9c2f (patch) | |
| tree | 893d98100d3ede2ff76905a67e1b9798c8c88868 /arch/x86/kvm/svm.c | |
| parent | 76cc3bd0c342199b0bc0fd6afc7035274bf7a718 (diff) | |
| parent | 274ede3e1a5fb3d0fd33acafb08993e95972c51f (diff) | |
| download | linux-dev-5.0.tar.xz | |
Merge tag 'v5.0.14' into dev-5.0dev-5.0
This is the 5.0.14 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index e544cec812f9..2a07e43ee666 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -6815,7 +6815,8 @@ static int sev_dbg_crypt(struct kvm *kvm, struct kvm_sev_cmd *argp, bool dec) struct page **src_p, **dst_p; struct kvm_sev_dbg debug; unsigned long n; - int ret, size; + unsigned int size; + int ret; if (!sev_guest(kvm)) return -ENOTTY; @@ -6823,6 +6824,11 @@ static int sev_dbg_crypt(struct kvm *kvm, struct kvm_sev_cmd *argp, bool dec) if (copy_from_user(&debug, (void __user *)(uintptr_t)argp->data, sizeof(debug))) return -EFAULT; + if (!debug.len || debug.src_uaddr + debug.len < debug.src_uaddr) + return -EINVAL; + if (!debug.dst_uaddr) + return -EINVAL; + vaddr = debug.src_uaddr; size = debug.len; vaddr_end = vaddr + size; @@ -6873,8 +6879,8 @@ static int sev_dbg_crypt(struct kvm *kvm, struct kvm_sev_cmd *argp, bool dec) dst_vaddr, len, &argp->error); - sev_unpin_memory(kvm, src_p, 1); - sev_unpin_memory(kvm, dst_p, 1); + sev_unpin_memory(kvm, src_p, n); + sev_unpin_memory(kvm, dst_p, n); if (ret) goto err; |