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AJvYcCUW5wEZzHjHee8z1FbKdk7szMm37MyhivZW+ygl3ucai5qq79dJF2CoFEgFjfLhEYzyq+fnEO0zd32GmTM=@vger.kernel.org X-Gm-Message-State: AOJu0YxQVgnMS/pkQJGRc7TDXr7KD7ymz3DCOJjEmmWDJcdNk08EPGwG W+QLaBLmUMjX82hD+7RVd8tyODg7AowNhd80Za4TddYlMvKL2M88EE+5nA== X-Google-Smtp-Source: AGHT+IEfycb5iiZymuS6/A5r7fPYBasvja3rpLa03Kr7wKm7iGMzy70e6xac0xoZKfX+K0CcjGzenw== X-Received: by 2002:a17:907:3f88:b0:a86:74fa:6a6f with SMTP id a640c23a62f3a-a86e39d5140mr38126566b.23.1724700964028; Mon, 26 Aug 2024 12:36:04 -0700 (PDT) Received: from andrea ([2a01:5a8:300:22d3:89b9:c5da:b451:c905]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a86e582d448sm11026366b.126.2024.08.26.12.36.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Aug 2024 12:36:03 -0700 (PDT) Date: Mon, 26 Aug 2024 22:35:59 +0300 From: Andrea Parri To: Alexandre Ghiti Cc: Atish Patra , Anup Patel , Will Deacon , Mark Rutland , Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Nam Cao Subject: Re: [PATCH -fixes] drivers: perf: Fix smp_processor_id() use in preemptible code Message-ID: References: <20240826165210.124696-1-alexghiti@rivosinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240826165210.124696-1-alexghiti@rivosinc.com> On Mon, Aug 26, 2024 at 06:52:10PM +0200, Alexandre Ghiti wrote: > As reported in [1], the use of smp_processor_id() in > pmu_sbi_device_probe() must be protected by disabling the preemption, so > simple use get_cpu()/put_cpu() instead. simply > Reported-by: Nam Cao Reported-by: Andrea Parri > Closes: https://lore.kernel.org/linux-riscv/20240820074925.ReMKUPP3@linutronix.de/ [1] > Signed-off-by: Alexandre Ghiti Tested-by: Andrea Parri Andrea