microsoft.cloud-hypervisor: fix panic on ExtendedGuestReport

Signed-off-by: Paul Meyer <[email protected]>

packages/by-name/microsoft/cloud-hypervisor/0001-snp-fix-panic-when-rejecting-extended-guest-report.patch

@@ -0,0 +1,28 @@
+From e7980fa1acc9972073d394de86a48cee5410cd97 Mon Sep 17 00:00:00 2001
+From: Tom Dohrmann <[email protected]>
+Date: Wed, 14 Aug 2024 16:02:39 +0200
+Subject: [PATCH] snp: fix panic when rejecting extended guest report
+
+swei2_rw_gpa_arg.data is an array of size 16 and value.to_le_bytes() is
+only 8 bytes.
+---
+ hypervisor/src/mshv/mod.rs | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/hypervisor/src/mshv/mod.rs b/hypervisor/src/mshv/mod.rs
+index f60d8ceb..b8fccf31 100644
+--- a/hypervisor/src/mshv/mod.rs
++++ b/hypervisor/src/mshv/mod.rs
+@@ -962,7 +962,8 @@ impl cpu::Vcpu for MshvVcpu {
+                                         byte_count: std::mem::size_of::<u64>() as u32,
+                                         ..Default::default()
+                                     };
+-                                    swei2_rw_gpa_arg.data.copy_from_slice(&value.to_le_bytes());
++                                    swei2_rw_gpa_arg.data[0..8]
++                                        .copy_from_slice(&value.to_le_bytes());
+                                     self.fd
+                                         .gpa_write(&mut swei2_rw_gpa_arg)
+                                         .map_err(|e| cpu::HypervisorCpuError::GpaWrite(e.into()))?;
+-- 
+2.45.1
+

packages/by-name/microsoft/cloud-hypervisor/package.nix

@@ -15,13 +15,13 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "cloud-hypervisor";
-  version = "38.0.72.2";
+  version = "38.0.72";
 
   src = fetchFromGitHub {
     owner = "microsoft";
     repo = "cloud-hypervisor";
     rev = "refs/tags/msft/v${version}";
-    hash = "sha256-4Xpeu0MM59t5G0oFGLyG/CV5nRumzATArPRchxS8ONY=";
+    hash = "sha256-wGLRBMZUiGRphED0a+GvKPDyhZBtg6aYoyOlvRtmmEA=";
   };
 
   cargoLock = {
@@ -39,6 +39,8 @@ rustPlatform.buildRustPackage rec {
     };
   };
 
+  patches = [ ./0001-snp-fix-panic-when-rejecting-extended-guest-report.patch ];
+
   separateDebugInfo = true;
 
   nativeBuildInputs = [