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authorMark Rutland <mark.rutland@arm.com>2022-11-08 12:37:25 +0300
committerWill Deacon <will@kernel.org>2022-11-08 15:42:46 +0300
commita8731264e5ce083eb761e5a6a8273db536743e9e (patch)
treea83dc14a13eb941769f057aad54c973ca60d29fa /drivers/perf
parentfe40ffdb7656d1f9c42dd402740765ff8b418b17 (diff)
downloadlinux-a8731264e5ce083eb761e5a6a8273db536743e9e.tar.xz
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>
Diffstat (limited to 'drivers/perf')
-rw-r--r--drivers/perf/arm_pmu_acpi.c1
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;