From patchwork Thu Jul 27 08:04:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13329149 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7BD7AC001E0 for ; Thu, 27 Jul 2023 08:06:28 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.570832.893069 (Exim 4.92) (envelope-from ) id 1qOw0a-0000l8-84; Thu, 27 Jul 2023 08:06:04 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 570832.893069; Thu, 27 Jul 2023 08:06:04 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qOw0a-0000l1-5H; Thu, 27 Jul 2023 08:06:04 +0000 Received: by outflank-mailman (input) for mailman id 570832; Thu, 27 Jul 2023 08:06:03 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qOw0Z-0000Tn-Ez for xen-devel@lists.xenproject.org; Thu, 27 Jul 2023 08:06:03 +0000 Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [2607:f8b0:4864:20::42b]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 6c81eda0-2c54-11ee-8613-37d641c3527e; Thu, 27 Jul 2023 10:06:01 +0200 (CEST) Received: by mail-pf1-x42b.google.com with SMTP id d2e1a72fcca58-686f6231bdeso112239b3a.1 for ; Thu, 27 Jul 2023 01:06:01 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id j8-20020aa78d08000000b006828e49c04csm885872pfe.75.2023.07.27.01.05.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jul 2023 01:05:59 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 6c81eda0-2c54-11ee-8613-37d641c3527e DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690445160; x=1691049960; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=CmSKD1W4o1llBpukOwDAPdWOg+LYzWoL67ya0UPwqvg=; b=bWsdCjXI/QTCbfrXnl1D1RHs1UzV532bO1xy0F2QKWdmxdeZNg1bc8fwYppoEa2Sii fv3Dw05OLiEoJFGdDqA0cK2BR0yissZW0QGh0p8G2jYOCo1VM3qmhhRKOuDu3Ld44+HC IlU/6E6PL7OGmulpkRgvQIFGvR7K7vSKmFATJlzNsM5VU0kfb+Q9ux9XLDln9HSGLjNa erFo50JbYYva+gdlhuASAFmcGCxJk1UklUElA3OcQq/NsulVXFSALP8x8A3jEL8k5O2s pAuqLDXkBW250K5e8xHlcez81V5k+DmAOms7sfdEUrryxL8JhS9LUOK5EJtF0pDaEYI9 8JWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690445160; x=1691049960; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=CmSKD1W4o1llBpukOwDAPdWOg+LYzWoL67ya0UPwqvg=; b=gqNPJuMfSGEqI/zGCh9TK4NygELo+WN1S2ddpaqfW7o8uLNQMDz97l1w7xlMjH5lk3 E7o1nkQibmvRGYNJfovQjUPDKRINaK8wpBLZuujiEgIozjEQbn+47djs+HAXXX9T7tgT IWadpqNpt8hpl+1IQERzKHXblf2JNkYlTjDlROuGPr7OiJ1GmaRNNVUt/Uw0gelP3ieP hV0cQzoOmZiiUkfE86kilCjjgykl2OXf/rcQVgd3RpbJ0fS2sj73VtrurngZTW7pnP2S 6wFqz7ewWFnS6kYiKCq6U9y/7vHs+82clqsD8QbDRPIj6t9giJK8U5ySu9Fg4kvFn89Q 2vWg== X-Gm-Message-State: ABy/qLaTq6f8uJ1QNHwbhsPsbxYTLmO356nLm396nvLDXq9TatIS551i yY/1VLvY6SJCc5fkaWn7oF1ONg== X-Google-Smtp-Source: APBJJlGsBl3klUilUFzaktHEHOMbkNlcOB/1K8g6HjcIbYlgfdxi92AgDTolw1HjCRkDLU6/tzA6hQ== X-Received: by 2002:a05:6a21:78a8:b0:137:3eba:b81f with SMTP id bf40-20020a056a2178a800b001373ebab81fmr6002609pzc.3.1690445159927; Thu, 27 Jul 2023 01:05:59 -0700 (PDT) From: Qi Zheng To: akpm@linux-foundation.org, david@fromorbit.com, tkhai@ya.ru, vbabka@suse.cz, roman.gushchin@linux.dev, djwong@kernel.org, brauner@kernel.org, paulmck@kernel.org, tytso@mit.edu, steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org, yujie.liu@intel.com, gregkh@linuxfoundation.org, muchun.song@linux.dev Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, linux-erofs@lists.ozlabs.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, linux-mtd@lists.infradead.org, rcu@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, Qi Zheng , Carlos Llamas Subject: [PATCH v3 01/49] binder: fix memory leak in binder_init() Date: Thu, 27 Jul 2023 16:04:14 +0800 Message-Id: <20230727080502.77895-2-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230727080502.77895-1-zhengqi.arch@bytedance.com> References: <20230727080502.77895-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 In binder_init(), the destruction of binder_alloc_shrinker_init() is not performed in the wrong path, which will cause memory leaks. So this commit introduces binder_alloc_shrinker_exit() and calls it in the wrong path to fix that. Fixes: f2517eb76f1f ("android: binder: Add global lru shrinker to binder") Signed-off-by: Qi Zheng Acked-by: Carlos Llamas --- drivers/android/binder.c | 1 + drivers/android/binder_alloc.c | 6 ++++++ drivers/android/binder_alloc.h | 1 + 3 files changed, 8 insertions(+) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 486c8271cab7..d720f93d8b19 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -6617,6 +6617,7 @@ static int __init binder_init(void) err_alloc_device_names_failed: debugfs_remove_recursive(binder_debugfs_dir_entry_root); + binder_alloc_shrinker_exit(); return ret; } diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index 662a2a2e2e84..e3db8297095a 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -1087,6 +1087,12 @@ int binder_alloc_shrinker_init(void) return ret; } +void binder_alloc_shrinker_exit(void) +{ + unregister_shrinker(&binder_shrinker); + list_lru_destroy(&binder_alloc_lru); +} + /** * check_buffer() - verify that buffer/offset is safe to access * @alloc: binder_alloc for this proc diff --git a/drivers/android/binder_alloc.h b/drivers/android/binder_alloc.h index 138d1d5af9ce..dc1e2b01dd64 100644 --- a/drivers/android/binder_alloc.h +++ b/drivers/android/binder_alloc.h @@ -129,6 +129,7 @@ extern struct binder_buffer *binder_alloc_new_buf(struct binder_alloc *alloc, int pid); extern void binder_alloc_init(struct binder_alloc *alloc); extern int binder_alloc_shrinker_init(void); +extern void binder_alloc_shrinker_exit(void); extern void binder_alloc_vma_close(struct binder_alloc *alloc); extern struct binder_buffer * binder_alloc_prepare_to_free(struct binder_alloc *alloc,