Commit a8731264 authored by Mark Rutland's avatar Mark Rutland Committed by Will Deacon
Browse files

arm_pmu: acpi: handle allocation failure 



One of the failure paths in the arm_pmu ACPI code is missing an early
return, permitting a NULL pointer dereference upon a memory allocation
failure.

Add the missing return.

Fixes: fe40ffdb ("arm_pmu: rework ACPI probing")
Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Reported-by: default avatarWill Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20221108093725.1239563-1-mark.rutland@arm.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent fe40ffdb

drivers/perf/arm_pmu_acpi.c

+1 −0
Original line number Diff line number Diff line
@@ -333,6 +333,7 @@ int arm_pmu_acpi_probe(armpmu_init_fn init_fn) 
		if (!pmu) {

			pr_warn("Unable to allocate PMU for CPU%d\n",

				cpu);

			return -ENOMEM;

		}



		cpuid = per_cpu(cpu_data, cpu).reg_midr;