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Message-ID: <02922d47-6bb9-4865-b13f-b3a6972853a6@redhat.com>
Date: Wed, 1 May 2024 20:19:23 +1000
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Subject: Re: [PATCH v9 05/19] ACPI: processor: Fix memory leaks in error paths
 of processor_add()
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To: Jonathan Cameron <Jonathan.Cameron@huawei.com>,
 Thomas Gleixner <tglx@linutronix.de>, Peter Zijlstra <peterz@infradead.org>,
 linux-pm@vger.kernel.org, loongarch@lists.linux.dev,
 linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
 kvmarm@lists.linux.dev, x86@kernel.org, Russell King
 <linux@armlinux.org.uk>, "Rafael J . Wysocki" <rafael@kernel.org>,
 Miguel Luis <miguel.luis@oracle.com>, James Morse <james.morse@arm.com>,
 Salil Mehta <salil.mehta@huawei.com>,
 Jean-Philippe Brucker <jean-philippe@linaro.org>,
 Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>,
 Marc Zyngier <maz@kernel.org>, Hanjun Guo <guohanjun@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
 Dave Hansen <dave.hansen@linux.intel.com>, linuxarm@huawei.com,
 justin.he@arm.com, jianyong.wu@arm.com
References: <20240430142434.10471-1-Jonathan.Cameron@huawei.com>
 <20240430142434.10471-6-Jonathan.Cameron@huawei.com>
From: Gavin Shan <gshan@redhat.com>
In-Reply-To: <20240430142434.10471-6-Jonathan.Cameron@huawei.com>
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On 5/1/24 00:24, Jonathan Cameron wrote:
> If acpi_processor_get_info() returned an error, pr and the associated
> pr->throttling.shared_cpu_map were leaked.
> 
> The unwind code was in the wrong order wrt to setup, relying on
> some unwind actions having no affect (clearing variables that were
> never set etc).  That makes it harder to reason about so reorder
> and add appropriate labels to only undo what was actually set up
> in the first place.
> 
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> 
> ---
> v9: New patch in response to Gavin noticing a memory leak later in the
>      series.
> ---
>   drivers/acpi/acpi_processor.c | 15 ++++++++-------
>   1 file changed, 8 insertions(+), 7 deletions(-)
> 

Reviewed-by: Gavin Shan <gshan@redhat.com>