On Fri, Jan 09, 2026 at 06:37:04PM +0100, Luigi Leonardi wrote:
> On Fri, Jan 09, 2026 at 03:34:10PM +0100, Oliver Steffen wrote:
> >Check for NULL pointer returned from igvm_get_buffer().
> >Documentation for that function calls for that unconditionally.
> >
> >Signed-off-by: Oliver Steffen <[email protected]>
> >---
> > backends/igvm.c | 13 ++++++++++---
> > 1 file changed, 10 insertions(+), 3 deletions(-)
> >
> >diff --git a/backends/igvm.c b/backends/igvm.c
> >index a350c890cc..dc1fd026cb 100644
> >--- a/backends/igvm.c
> >+++ b/backends/igvm.c
> >@@ -170,9 +170,16 @@ static int qigvm_handler(QIgvm *ctx, uint32_t type, 
> >Error **errp)
> >                 (int)header_handle);
> >             return -1;
> >         }
> >-        header_data = igvm_get_buffer(ctx->file, header_handle) +
> >-                      sizeof(IGVM_VHS_VARIABLE_HEADER);
> >-        result = handlers[handler].handler(ctx, header_data, errp);
> >+        header_data = igvm_get_buffer(ctx->file, header_handle);
> >+        if (header_data == NULL) {
> >+            error_setg(
> >+                errp,
> >+                "IGVM: Failed to get directive header data (code: %d)",
> >+                (int)header_handle);
> >+            result = -1;
> >+        } else {
> >+            result = handlers[handler].handler(ctx, header_data + 
> >sizeof(IGVM_VHS_VARIABLE_HEADER), errp);
> >+        }
> >         igvm_free_buffer(ctx->file, header_handle);
> >         return result;
> >     }
> >-- 2.52.0
> >
> 
> IMHO this should be sent a separate patch

Huh?  It /is/ a separate patch ...

> with the Fixes tag as you are
> fixing a bug.

That makes sense indeed.

take care,
  Gerd


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