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| author | Dave Jones <davej@redhat.com> | 2014-03-06 12:20:28 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-03-11 11:59:34 +0100 |
| commit | b7b4839d93e50adccef29eccb694807cdcb8bee3 (patch) | |
| tree | d015228e464ce184074c50e63f5918f7ceec0ae1 | |
| parent | b8ad0f912b93c23c34dfedc615a0eeba6ca29463 (diff) | |
| download | linux-b7b4839d93e50adccef29eccb694807cdcb8bee3.tar.gz linux-b7b4839d93e50adccef29eccb694807cdcb8bee3.tar.bz2 linux-b7b4839d93e50adccef29eccb694807cdcb8bee3.zip | |
perf/x86: Fix leak in uncore_type_init failure paths
The error path of uncore_type_init() frees up any allocations
that were made along the way, but it relies upon type->pmus
being set, which only happens if the function succeeds. As
type->pmus remains null in this case, the call to
uncore_type_exit will do nothing.
Moving the assignment earlier will allow us to actually free
those allocations should something go awry.
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140306172028.GA552@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_intel_uncore.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c index c88f7f4b03ee..047f540cf3f7 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c @@ -3334,6 +3334,8 @@ static int __init uncore_type_init(struct intel_uncore_type *type) if (!pmus) return -ENOMEM; + type->pmus = pmus; + type->unconstrainted = (struct event_constraint) __EVENT_CONSTRAINT(0, (1ULL << type->num_counters) - 1, 0, type->num_counters, 0, 0); @@ -3369,7 +3371,6 @@ static int __init uncore_type_init(struct intel_uncore_type *type) } type->pmu_group = &uncore_pmu_attr_group; - type->pmus = pmus; return 0; fail: uncore_type_exit(type); |