fix: bootloader UEFI alloc panic + pkgar staging fallback

Bootloader: alloc_zeroed_page_aligned no longer panics on OVMF AllocatePages failure. Returns null on error. Cookbook: pkgar falls back to repo/ dir when target pkgar missing. Resolves KDE build chain failure. redbear-full: builds 4.0GB image+ISO, boots without crash.
2026-05-03 14:23:54 +01:00
parent a4e18e242a
commit 2e4c09a6b6
4 changed files with 27 additions and 1 deletions
@@ -0,0 +1,23 @@
+--- a/src/os/uefi/mod.rs	2026-05-03 14:17:35.198125412 +0100
+++ b/src/os/uefi/mod.rs	2026-05-03 14:17:35.205312393 +0100
+@@ -53,12 +53,16 @@
+             pages,
+             &mut ptr,
+         ))
+-        .unwrap();
+-        ptr as *mut u8
+        .unwrap_or_else(|_| {
+            ptr = 0;
+            0
+        });
+        if ptr == 0 { ptr::null_mut() } else { ptr as *mut u8 }
+     };
+ 
+-    assert!(!ptr.is_null());
+-    unsafe { ptr::write_bytes(ptr, 0, pages * page_size) };
+    if !ptr.is_null() {
+        unsafe { ptr::write_bytes(ptr, 0, pages * page_size) };
+    }
+     ptr
+ }
+