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[71.184.117.43]) by smtp.gmail.com with ESMTPSA id a12sm3935981qko.103.2020.05.07.10.29.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 May 2020 10:29:05 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable From: Qian Cai Mime-Version: 1.0 (1.0) Subject: Re: Kmemleak infrastructure improvement for task_struct leaks and call_rcu() Date: Thu, 7 May 2020 13:29:04 -0400 Message-Id: <40B2408F-05DD-4A82-BF97-372EA09FA873@lca.pw> References: <20200507171607.GD3180@gaia> Cc: Linux-MM , LKML , "Paul E. McKenney" In-Reply-To: <20200507171607.GD3180@gaia> To: Catalin Marinas X-Mailer: iPhone Mail (17D50) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On May 7, 2020, at 1:16 PM, Catalin Marinas wrot= e: >=20 > I don't mind adding additional tracking info if it helps with debugging. > But if it's for improving false positives, I'd prefer to look deeper > into figure out why the pointer reference graph tracking failed. No, the task struct leaks are real leaks. It is just painful to figure out t= he missing or misplaced put_task_struct() from the kmemleak reports at the m= oment.=