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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 72B8EC2D0DC for ; Thu, 2 Jan 2020 12:35:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50540215A4 for ; Thu, 2 Jan 2020 12:35:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728300AbgABMfJ (ORCPT ); Thu, 2 Jan 2020 07:35:09 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:48745 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728274AbgABMfJ (ORCPT ); Thu, 2 Jan 2020 07:35:09 -0500 Received: by mail-il1-f197.google.com with SMTP id u14so25648541ilq.15 for ; Thu, 02 Jan 2020 04:35:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=y0iE5KleJVXXmUFvao8OvB4WDNhb1+wejlM/yNViWB0=; b=ifEp8dEhhYguS+Tw7dKKUp8N5gU3lrU8NR69H+0dZMNEu5kgECB6uK5JXQ356lupLu XsZ4TctqrCHtB5Zwd1Lh/BBoHysOTayvhzU32XsvmmHNcsRGUoEvFXmO3OYPAeRTBKfW E7M1lIzVAxicwWSpDHNE6kVxruemWMnwe3dudz6zEXKKEaHoUwVkgQq/syOxgB8ra2uR wAOmIluxx0SIwaMCvjSBewDC9cSubEwpQClBOfMRIiE3Wxr1tD7zTYHJb7vPjaMbuD0a u1L9apPnd59E3DGxTcCKS3AhqhAgx+qh2W2srumf/Eegp1SZnnyITEW3ADwqAuwtw3Oa rEAg== X-Gm-Message-State: APjAAAUu49MsC8iWNRS17OyjdXU1t+RhjGqfQzNiyoy/KqzjaKOqwyD+ tef8p961EitlwUvC0vYl3hDFWvs/meUa3anpe4na5Vf2h3IG X-Google-Smtp-Source: APXvYqxFR/nfC87By5t8MAevHYJSM4hc9KgEMxwcIzCAhJzxWn8oF64cx9dgEtwx2oDUqZyG7pTghhJ6gs+7Doo5hyjT/2qCnXoB MIME-Version: 1.0 X-Received: by 2002:a92:d2:: with SMTP id 201mr72802259ila.22.1577968509084; Thu, 02 Jan 2020 04:35:09 -0800 (PST) Date: Thu, 02 Jan 2020 04:35:09 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000736cbb059b276cd4@google.com> Subject: memory leak in path_openat From: syzbot To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: bf8d1cd4 Merge tag 'scsi-fixes' of git://git.kernel.org/pu.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16386971e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=328af7338803d39a dashboard link: https://syzkaller.appspot.com/bug?extid=9c064b9ab4dbb724c806 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17f4ce15e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=153c8971e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+9c064b9ab4dbb724c806@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff88811f95b400 (size 256): comm "syz-executor609", pid 6975, jiffies 4294945087 (age 7.980s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ a0 2b ab 1b 82 88 ff ff c0 3c 80 2b 81 88 ff ff .+.......<.+.... backtrace: [<00000000aa112990>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<00000000aa112990>] slab_post_alloc_hook mm/slab.h:586 [inline] [<00000000aa112990>] slab_alloc mm/slab.c:3320 [inline] [<00000000aa112990>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484 [<00000000a62a216f>] kmem_cache_zalloc include/linux/slab.h:660 [inline] [<00000000a62a216f>] __alloc_file+0x28/0x130 fs/file_table.c:101 [<00000000db4f5560>] alloc_empty_file+0x50/0xd0 fs/file_table.c:151 [<00000000178121b2>] path_openat+0x52/0x1dd0 fs/namei.c:3526 [<00000000b9f51901>] do_filp_open+0xaa/0x130 fs/namei.c:3567 [<000000008b6c278b>] do_sys_open+0x253/0x330 fs/open.c:1097 [<00000000de529158>] __do_sys_openat fs/open.c:1124 [inline] [<00000000de529158>] __se_sys_openat fs/open.c:1118 [inline] [<00000000de529158>] __x64_sys_openat+0x24/0x30 fs/open.c:1118 [<000000002f0aeb7b>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294 [<00000000720f3b5c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches