From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x227V1mzshxWDgMUUIskYTkNvcvNXd065QxR6IWuZZKLqJLfjABFf+deFZPhAAmGkCuUbeRTA ARC-Seal: i=1; a=rsa-sha256; t=1517591196; cv=none; d=google.com; s=arc-20160816; b=eFKebiqSfcfhobc/mDoyg+tKfDK1++AkDxsI6y6vi2/2BCbC7DXLnIHFm2ECyeS4+R 97PVkGlWqHOYCOlXrDGQOjqu7FvhN+0KuYRrWDVEzdxEdC6nqoschfrJaFe8b9duGWll 84jfYXnbaKGzefI1lekFW/UTGfQtt0K3HyUq5kAaGcVrqd8V66pKLzkjZiriHZBAMwur H5lsau02glcO9A7rLNB5f6ZgHkYpLQNm0vgy6N0FPMmGpbmoEssygzb7maExMbm00I6G UL5V+du8u+UQDvztIL/Syxtad+BOSr2B1rgaCD+1HxRKA2kuYxZfjrOKd6K3xpLc/KMQ +RvA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=J87ZbkEnEsuGI65+RTO4ZJM4rimBjtsf/ZzIQ39sZ+0=; b=weHR0laZOvx2NQVji0CI+P0zTXpG5TYpeXiMFiX0zq8rQTnv24CH/r2rC/UxU2gteu HkYfo2aLvDt4t8dChXeeh48M6ZMzeZ7xLQSSrHzT+3nKdBoEytTCU173IyqWa0eEn+7d VS7trkQMFRnT5QRvKAO/P2mKkHulhkQdBnJO3rSw3c2pkA15/3IBu32RThGQNzrdAyWO qyhCoJ+N3akeEjkU3f5J9OI8DmR36fEUm7oaGJwrKoBKYvvbA8TlbwsX9c5KGLab9ySG 5CpvbezPmKUu1AehpYKJ0sSeUfmiiTwn20GjJ5SDxzn0erXiktQwftYiLGG9nfLer/P/ cnLA== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tetsuo Handa , Jan Kara , Michal Hocko , Jan Kara , Sasha Levin Subject: [PATCH 4.9 51/86] quota: Check for register_shrinker() failure. Date: Fri, 2 Feb 2018 17:58:11 +0100 Message-Id: <20180202140826.948824042@linuxfoundation.org> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180202140822.679101338@linuxfoundation.org> References: <20180202140822.679101338@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1591309376971073820?= X-GMAIL-MSGID: =?utf-8?q?1591309706585567356?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tetsuo Handa [ Upstream commit 88bc0ede8d35edc969350852894dc864a2dc1859 ] register_shrinker() might return -ENOMEM error since Linux 3.12. Call panic() as with other failure checks in this function if register_shrinker() failed. Fixes: 1d3d4437eae1 ("vmscan: per-node deferred work") Signed-off-by: Tetsuo Handa Cc: Jan Kara Cc: Michal Hocko Reviewed-by: Michal Hocko Signed-off-by: Jan Kara Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- fs/quota/dquot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -2985,7 +2985,8 @@ static int __init dquot_init(void) pr_info("VFS: Dquot-cache hash table entries: %ld (order %ld," " %ld bytes)\n", nr_hash, order, (PAGE_SIZE << order)); - register_shrinker(&dqcache_shrinker); + if (register_shrinker(&dqcache_shrinker)) + panic("Cannot register dquot shrinker"); return 0; }