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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73472C433EF for ; Wed, 8 Jun 2022 19:37:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9F4A36B0071; Wed, 8 Jun 2022 15:37:17 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9A3796B0072; Wed, 8 Jun 2022 15:37:17 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 86B5C6B0073; Wed, 8 Jun 2022 15:37:17 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 775266B0071 for ; Wed, 8 Jun 2022 15:37:17 -0400 (EDT) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay11.hostedemail.com (Postfix) with ESMTP id AE952802AA for ; Wed, 8 Jun 2022 19:37:16 +0000 (UTC) X-FDA: 79556077272.28.886F176 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf19.hostedemail.com (Postfix) with ESMTP id 1198A1A0060 for ; Wed, 8 Jun 2022 19:37:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=NSqM+ffKAUF5O9Bq21uK4+RA2jjysF9YYfW6abSjAuM=; b=h6j+IgieKtqocKMwSMRGcUY7ww LBYEmC1tgh/lqPd07os+FV7gpXaxyaE7X3BQykXSVeQZ6uadV/J4OgA9pdGcf3Q1QsXzJGMivPcZQ 4F/J9Ue2Vdn5m7IZKDQDITuRz+KfgvtM9MuR6KVymvPDrXQWIPLKmBA3hsne9wBzoAiwR1hEpTHxs zZOQtCsTGb+UBQ7OiRwWi6zcDkHdo9qJvYn1z7YpwRj4BEFUgPA1eQWp/gJjlEopZynvMVouqb5Ep hTiojVc7tyIf8P/h6lxNlDJiXt0WLkeWlMzjGhQjR7ewiQ4RWW5Bz7U+pOFo9dENzNl1z/X4xykWd P9/ZAq8g==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nz1UN-00CupW-OY; Wed, 08 Jun 2022 19:37:11 +0000 Date: Wed, 8 Jun 2022 20:37:11 +0100 From: Matthew Wilcox To: syzbot Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] memory leak in xas_nomem Message-ID: References: <00000000000036af2005e009e7e6@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000036af2005e009e7e6@google.com> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1654717036; a=rsa-sha256; cv=none; b=223lr1vxtLtoEp4obfCQNXcErsjJ0JlZlINudzM9dr6fC+RAcmMBk/Optfqwf+HKGtJR0L 1gW8FWB4bKrc7P7FtsuREsRPH+zlaDe4nm5x40lcEeWgo6rvtGyv0eV0UBsw8mZo/XFhV0 IdX7o3M7aPaRNdhl562mqnmUPBfrwAw= ARC-Authentication-Results: i=1; imf19.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=h6j+Igie; dmarc=none; spf=none (imf19.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1654717036; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=NSqM+ffKAUF5O9Bq21uK4+RA2jjysF9YYfW6abSjAuM=; b=14iB+Dmp6H4g7LOTVz3LZtyTxR8GtiD4St/8VhULlY6ZEodU9HqY9jjsa7d5FE6qEm0rcW BiUWBzHv3qGTJSPQpmKDZqUccGIwwR/Ur1p7UqNGwzL04z7SdmmvlHX5beo3zH/oV/lw3I 7YZk1nEolJoo+r0ZF5oAwRBC8vaej10= X-Stat-Signature: 64mfpbmrsjk8gsfban5nwdr1siyik39n X-Rspamd-Queue-Id: 1198A1A0060 X-Rspam-User: X-Rspamd-Server: rspam10 Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=h6j+Igie; dmarc=none; spf=none (imf19.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-HE-Tag: 1654717035-648699 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: On Fri, May 27, 2022 at 08:20:21PM -0700, syzbot wrote: > BUG: memory leak > unreferenced object 0xffff88810cb35d80 (size 576): > comm "syz-executor883", pid 3623, jiffies 4294954631 (age 23.510s) > hex dump (first 32 bytes): > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 18 48 36 04 81 88 ff ff 98 5d b3 0c 81 88 ff ff .H6......]...... > backtrace: > [] xas_nomem lib/xarray.c:307 [inline] > [] xas_nomem+0x4a/0xd0 lib/xarray.c:299 > [] split_huge_page_to_list+0x26d0/0x29f0 mm/huge_memory.c:2626 #syz test: git://git.infradead.org/users/willy/pagecache.git for-next