The error handling path of iio mapping looks fragile. We already fixed
one issue caused by it, commit
f797f05d917f ("perf/x86/intel/uncore:
Fix for iio mapping on Skylake Server"). Clean up the error handling
path and make the code robust.
Reported-by: gushengxian <gushengxian@yulong.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/40e66cf9-398b-20d7-ce4d-433be6e08921@linux.intel.com
/* One more for NULL. */
attrs = kcalloc((uncore_max_dies() + 1), sizeof(*attrs), GFP_KERNEL);
if (!attrs)
- goto err;
+ goto clear_topology;
eas = kcalloc(uncore_max_dies(), sizeof(*eas), GFP_KERNEL);
if (!eas)
- goto err;
+ goto clear_attrs;
for (die = 0; die < uncore_max_dies(); die++) {
sprintf(buf, "die%ld", die);
for (; die >= 0; die--)
kfree(eas[die].attr.attr.name);
kfree(eas);
+clear_attrs:
kfree(attrs);
+clear_topology:
kfree(type->topology);
clear_attr_update:
type->attr_update = NULL;