From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 53CAE282F1A; Wed, 1 Apr 2026 01:32:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775007172; cv=none; b=jfkP3SVxfEAkaADb4OX3LmZhtbqlHDZySVdmTOUdBcT5BZpz+UzGCDW/5tCuVJisr1I4KVhe1P0XMvpaDHDr+JNOKliXIsCjagQ52TUbG4Mp4lG/8yk7Zvq31X5hWFqVvV0yiogd87sefjDqFHBfQIrdEQleizF4AqIVWd58Wdc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775007172; c=relaxed/simple; bh=jXZfk1mQPfK1IJl13J6c5AH6YpYSd06uZnkSiI5+/Ns=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mLF184uA/se0SFTEKr7Hnpo4tiaMzIjBB9Wcxw/KJ9iHjGCG2KeQIfmsEJJuhSO+/2ScBuu4tPzatmH1CBa9J+rJe45o5dX5pFuvpQdJ27bwcqiJE8Vx9xONUsXsCMK32sNRQR/V+Mj5JHqrCi87Vo5RzozRToatmMPwXCzGByg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KzSGxm/Y; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KzSGxm/Y" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 885D2C19423; Wed, 1 Apr 2026 01:32:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775007171; bh=jXZfk1mQPfK1IJl13J6c5AH6YpYSd06uZnkSiI5+/Ns=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KzSGxm/YXsYrSnsIGTiO722hvWDxeLVFmyn0TeukvOA192Z2O0S/92vynODty1E99 ooiy23VGQnQsCWlx+SelpYT5euY4WiA0qnUQx/RlqMw/9xgWUGuLNqhODRklf/iOQO k7B1bMGaf5uSK5XGBRX8sy4FaIBczCQmBHnsk89gKZeB21nb3R74Nl0+cw/1J30z6e 4jfZXDVQYH12XX0tl3FLXuUyblWplTmwV+18un109j/qti6tNb6mf/CU+Ef0AFCjo/ thQqDA2FOayjKvZqU8lbZ2G12iH+Gyq8Qahp5HgcvTIBRdFO5vMRrKcBN/eL2sJDpR vlLcFLidg9qYw== From: SeongJae Park To: Jackie Liu Cc: SeongJae Park , akpm@linux-foundation.org, linux-mm@kvack.org, damon@lists.linux.dev, stable@vger.kernel.org Subject: Re: [PATCH] mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start() Date: Tue, 31 Mar 2026 18:32:49 -0700 Message-ID: <20260401013250.90153-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260331101553.88422-1-liu.yun@linux.dev> References: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit + damon@lists.linux.dev. Please Cc damon@ for all DAMON patches. Hello Jackie, On Tue, 31 Mar 2026 18:15:53 +0800 Jackie Liu wrote: > From: Jackie Liu > > Destroy the DAMON context and reset the global pointer when > damon_start() fails. Otherwise, the context allocated by > damon_stat_build_ctx() is leaked, and the stale damon_stat_context > pointer will be overwritten on the next enable attempt, making the > old allocation permanently unreachable. > > Fixes: 369c415e6073 ("mm/damon: introduce DAMON_STAT module") As this is a memory leak, let's add Cc: stable@ too. Cc: # 6.17.x > Signed-off-by: Jackie Liu Reviewed-by: SeongJae Park Thanks, SJ [...]