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| author | Mark Rutland <mark.rutland@arm.com> | 2022-11-08 09:37:25 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-11-08 12:42:46 +0000 |
| commit | a8731264e5ce083eb761e5a6a8273db536743e9e (patch) | |
| tree | a83dc14a13eb941769f057aad54c973ca60d29fa | |
| parent | fe40ffdb7656d1f9c42dd402740765ff8b418b17 (diff) | |
| download | linux-a8731264e5ce083eb761e5a6a8273db536743e9e.tar.bz2 | |
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: fe40ffdb7656 ("arm_pmu: rework ACPI probing")
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20221108093725.1239563-1-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/perf/arm_pmu_acpi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/perf/arm_pmu_acpi.c b/drivers/perf/arm_pmu_acpi.c index a085e45b509e..90815ad762eb 100644 --- a/drivers/perf/arm_pmu_acpi.c +++ b/drivers/perf/arm_pmu_acpi.c @@ -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; |