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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-02-16 23:04:41 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-17 08:36:09 +0100 |
| commit | 8bc9162cd2bf37036c486b384ac445b59b334b04 (patch) | |
| tree | c2a9c71c53b0b5916c592b2d125ca4121fc5f9b3 | |
| parent | 65c23c65bee479faceb042a52f5a7278dfa8d972 (diff) | |
| download | linux-8bc9162cd2bf37036c486b384ac445b59b334b04.tar.bz2 | |
perf/x86/amd/uncore: Plug reference leak
In the error path of amd_uncore_cpu_up_prepare() the newly allocated uncore
struct is freed, but the percpu pointer still references it. Set it to NULL.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1602162302170.19512@nanos
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_amd_uncore.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_amd_uncore.c b/arch/x86/kernel/cpu/perf_event_amd_uncore.c index 49742746a6c9..8836fc9fa84b 100644 --- a/arch/x86/kernel/cpu/perf_event_amd_uncore.c +++ b/arch/x86/kernel/cpu/perf_event_amd_uncore.c @@ -323,6 +323,8 @@ static int amd_uncore_cpu_up_prepare(unsigned int cpu) return 0; fail: + if (amd_uncore_nb) + *per_cpu_ptr(amd_uncore_nb, cpu) = NULL; kfree(uncore_nb); return -ENOMEM; } |