lib(kernel): iteratively query whatprovides

repos/system_upgrade/common/libraries/kernel.py

@@ -116,16 +116,21 @@ def get_kernel_pkg_info_for_uname_r(uname_r):
     :returns: Information about the kernel package providing given uname_r
     :rtype: KernelPkgInfo
     """
-    try:
-        kernel_pkg_nevras = run(['rpm', '-q', '--whatprovides'] + KERNEL_UNAME_R_PROVIDES, split=True)['stdout']
-        for kernel_pkg_nevra in kernel_pkg_nevras:
-            provided_uname = get_uname_r_provided_by_kernel_pkg(kernel_pkg_nevra)
-            if not provided_uname:
-                api.current_logger().warning('Failed to obtain uname-r provided by %s', kernel_pkg_nevra)
-            if provided_uname == uname_r:
-                return get_kernel_pkg_info(kernel_pkg_nevra)
-    except CalledProcessError as e:
-        raise StopActorExecutionError(message='Unable to obtain kernel information of the booted kernel.',
-                                      details={'details': str(e), 'stderr': e.stderr})
+    kernel_pkg_nevras = []
+    for kernel_uname_r_provide in KERNEL_UNAME_R_PROVIDES:
+        try:
+            kernel_pkg_nevras += run(['rpm', '-q', '--whatprovides', kernel_uname_r_provide], split=True)['stdout']
+        except CalledProcessError:  # There is nothing providing a particular provide, e.g, kernel-rt-uname-r
+            continue  # Nothing bad happened, continue
+
+    kernel_pkg_nevras = set(kernel_pkg_nevras)
+
+    for kernel_pkg_nevra in kernel_pkg_nevras:
+        provided_uname = get_uname_r_provided_by_kernel_pkg(kernel_pkg_nevra)  # We know all packages provide a uname
+        if not provided_uname:
+            api.current_logger().warning('Failed to obtain uname-r provided by %s', kernel_pkg_nevra)
+        if provided_uname == uname_r:
+            return get_kernel_pkg_info(kernel_pkg_nevra)
+
     raise StopActorExecutionError(message='Unable to obtain kernel information of the booted kernel: no package is '
                                           'providing the booted kernel release returned by uname.')