Commit-ID: 8bc9162cd2bf37036c486b384ac445b59b334b04 Gitweb: http://git.kernel.org/tip/8bc9162cd2bf37036c486b384ac445b59b334b04 Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Tue, 16 Feb 2016 23:04:41 +0100 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Wed, 17 Feb 2016 08:36:09 +0100 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@xxxxxxxxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Cc: Vince Weaver <vincent.weaver@xxxxxxxxx> Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1602162302170.19512@nanos Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- arch/x86/kernel/cpu/perf_event_amd_uncore.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/cpu/perf_event_amd_uncore.c b/arch/x86/kernel/cpu/perf_event_amd_uncore.c index 4974274..8836fc9 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; } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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