Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.12 098/102] perf/x86/intel/uncore: Clean up error handling path of iio mapping | Date | Wed, 14 Jul 2021 15:40:31 -0400 |
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From: Kan Liang <kan.liang@linux.intel.com>
[ Upstream commit d4ba0b06306a70c99a43f9d452886a86e2d3bd26 ]
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 Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/x86/events/intel/uncore_snbep.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index 9e1f64bc988b..f1c5d7cb7253 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -3795,11 +3795,11 @@ static int skx_iio_set_mapping(struct intel_uncore_type *type) /* 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); @@ -3820,7 +3820,9 @@ static int skx_iio_set_mapping(struct intel_uncore_type *type) 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; -- 2.30.2
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