From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC017C3A5A4 for ; Mon, 26 Aug 2019 03:06:40 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9F64C206E0 for ; Mon, 26 Aug 2019 03:06:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=embeddedor.com header.i=@embeddedor.com header.b="k+L8HgGt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9F64C206E0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=embeddedor.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2AEF06B051C; Sun, 25 Aug 2019 23:06:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 239AE6B051D; Sun, 25 Aug 2019 23:06:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0D8D96B051E; Sun, 25 Aug 2019 23:06:40 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0147.hostedemail.com [216.40.44.147]) by kanga.kvack.org (Postfix) with ESMTP id DB3516B051C for ; Sun, 25 Aug 2019 23:06:39 -0400 (EDT) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with SMTP id 80AD8482C for ; Mon, 26 Aug 2019 03:06:39 +0000 (UTC) X-FDA: 75863091318.19.toe45_744584b47be12 X-HE-Tag: toe45_744584b47be12 X-Filterd-Recvd-Size: 3564 Received: from gateway24.websitewelcome.com (gateway24.websitewelcome.com [192.185.51.56]) by imf27.hostedemail.com (Postfix) with ESMTP for ; Mon, 26 Aug 2019 03:06:38 +0000 (UTC) Received: from cm13.websitewelcome.com (cm13.websitewelcome.com [100.42.49.6]) by gateway24.websitewelcome.com (Postfix) with ESMTP id 03155C73A for ; Sun, 25 Aug 2019 22:06:38 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id 25L3iSJZz3Qi025L3i84cc; Sun, 25 Aug 2019 22:06:38 -0500 X-Authority-Reason: nr=8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=embeddedor.com; s=default; h=Content-Type:MIME-Version:Message-ID:Subject: Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Nhx5OiP7r0dYpbGQdFUd0gr/5YT1Ihavje6uRy4hWMQ=; b=k+L8HgGtHnF9vb85fjf0bIhaJn 4kLqVLiQtaUzgqgNobmb1ASxxWaChh7tMtQw/FPmX3uCLbhJmdn+huWyqQkRx9Yqd12R89xTe0kSW Dy1Y9bxs4JWgQ3L3B865+CqSPt8sFZ8OaHtH5tIB+w3Jh618d5sPoM8CPB+4XSis/CURwp+BrVLBA 1sw2OEjFpOK8UWnJoNYxx5KxxENle5dDrH8oT9NjrpVQEbxigar/jEMF+uZudqwQeHmsvEI7sGZvO i4Kxrlm1jSN5+1bcp1GzKsggsdhMIHn6eU2vrEurQd55dIbwlqk6DC5bPrfLw1Q8xB3EG6Z1JSXnO bwGmxJAA==; Received: from [189.152.216.116] (port=45992 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.92) (envelope-from ) id 1i25L2-003wZG-0L; Sun, 25 Aug 2019 22:06:36 -0500 Date: Sun, 25 Aug 2019 22:06:34 -0500 From: "Gustavo A. R. Silva" To: Andrew Morton , Henry Burns Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] mm/z3fold.c: fix lock/unlock imbalance in z3fold_page_isolate Message-ID: <20190826030634.GA4379@embeddedor> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - kvack.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.152.216.116 X-Source-L: No X-Exim-ID: 1i25L2-003wZG-0L X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.152.216.116]:45992 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 3 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Fix lock/unlock imbalance by unlocking *zhdr* before return. Addresses-Coverity-ID: 1452811 ("Missing unlock") Fixes: d776aaa9895e ("mm/z3fold.c: fix race between migration and destruction") Signed-off-by: Gustavo A. R. Silva --- mm/z3fold.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/z3fold.c b/mm/z3fold.c index e31cd9bd4ed5..75b7962439ff 100644 --- a/mm/z3fold.c +++ b/mm/z3fold.c @@ -1406,6 +1406,7 @@ static bool z3fold_page_isolate(struct page *page, isolate_mode_t mode) * should freak out. */ WARN(1, "Z3fold is experiencing kref problems\n"); + z3fold_page_unlock(zhdr); return false; } z3fold_page_unlock(zhdr); -- 2.23.0