New subject: [Bug 55684] Null pointer dereference in failure path

30 Sep 2023


      https://bugs.winehq.org/show_bug.cgi?id=55684
Bug ID: 55684
           Summary: Null pointer dereference in failure path
           Product: vkd3d
           Version: 1.9
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: vkd3d
          Assignee: wine-bugs@winehq.org
          Reporter: bunglehead@gmail.com
      Distribution: ---
From Coverity report:
/home/akhaldi/wine/libs/vkd3d/libs/vkd3d-shader/dxil.c: 1793 in
sm6_parser_declare_function()
1787             return false;
1788         }
1789         ret_type = fn->type->u.function->ret_type;
1790     
1791         if (!(fn->type = sm6_type_get_pointer_to_type(fn->type,
ADDRESS_SPACE_DEFAULT, sm6)))
1792         {
...
...
...
CID 1546877:  Null pointer dereferences  (FORWARD_NULL)
Dereferencing null pointer "fn->type".

1793             WARN("Failed to get pointer type for type %u.\n",
fn->type->class);
1794             return false;
1795         }
1796     
1797         if (record->operands[1])
1798             WARN("Ignoring calling convention %#"PRIx64".\n",
record->operands[1]);
The issue is obviously in 'fn->type' being reused in a warning message.
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[Bug 55684] New: Null pointer dereference in failure path