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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 BF77BC43603 for ; Sun, 8 Dec 2019 19:35:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9E28020692 for ; Sun, 8 Dec 2019 19:35:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726637AbfLHTfJ (ORCPT ); Sun, 8 Dec 2019 14:35:09 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:42005 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726506AbfLHTfJ (ORCPT ); Sun, 8 Dec 2019 14:35:09 -0500 Received: by mail-il1-f199.google.com with SMTP id n79so9994031ilh.9 for ; Sun, 08 Dec 2019 11:35:09 -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=gvAQ4NfvnOeIg1SkBSm6bTwN9I84q20C3o5MLaZUt60=; b=uN/2kfqB5bheTrPzhEcGQhSws+2GsUvkQP31TDCP7GyucbSopeNjaykvUYA3hr5Exd lUcWDlt1L4h2+Z0XpVnGaFExYzvuATxr8DMA0WiRiL0iYwQ+ROzJgFzbPLapkzT4QU4n 7C9GF9g8cROQjyPC6jU1FTnUTwLxk+/A96EQS833OKHmdvZYvdxQxMb//yqQqXi7hGDk 84LIgq1CQBErvgFFAWCXCnufDAs07iajXjR1uVBVoX6+j2VnS3kFp1m+MAKePDiss9XI H0P5Ch5RRPuk9l3jQ3jnwUWw+GZuVpxnAgt1ZdE8tQVXdVoey8PmbF6U6Yr4CI5p0kQ/ Fmww== X-Gm-Message-State: APjAAAWF5fToNK2b6RZQrvnp1TgPmGaz5/y6d7BzCC22Yfdb3USvV2zR cMP+pzR2umI+eI5YDlz7c7Ah5e08ozEDSPcr0bMFduZolBr0 X-Google-Smtp-Source: APXvYqxpTAdjbwjwSyRrxHPnqf9fVl+0mX9ZKt0gKVJ9KuSJgBDpf5vT2xdqhaI+qdoIZM21SB8m78X/n87umw67yYCv/DrVR108 MIME-Version: 1.0 X-Received: by 2002:a02:ccb9:: with SMTP id t25mr11790800jap.82.1575833708592; Sun, 08 Dec 2019 11:35:08 -0800 (PST) Date: Sun, 08 Dec 2019 11:35:08 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006d0a820599366088@google.com> Subject: memory leak in erase_aeb From: syzbot To: linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, syzkaller-bugs@googlegroups.com, vigneshr@ti.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: ad910e36 pipe: fix poll/select race introduced by the pipe.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16080232e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=3beca47aecbf4a9c dashboard link: https://syzkaller.appspot.com/bug?extid=f317896aae32eb281a58 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14b527f2e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+f317896aae32eb281a58@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff8881225039a0 (size 32): comm "syz-executor.0", pid 7318, jiffies 4294950453 (age 8.280s) hex dump (first 32 bytes): 00 00 00 00 03 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................ backtrace: [<000000003a9d0e7e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<000000003a9d0e7e>] slab_post_alloc_hook mm/slab.h:586 [inline] [<000000003a9d0e7e>] slab_alloc mm/slab.c:3320 [inline] [<000000003a9d0e7e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484 [<00000000b53dfd0a>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691 [<000000005ccfba82>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758 [<000000002350928f>] ubi_attach+0x665/0x18e7 drivers/mtd/ubi/attach.c:1605 [<0000000055aac88b>] ubi_attach_mtd_dev+0x5b3/0xd40 drivers/mtd/ubi/build.c:946 [<00000000071dc178>] ctrl_cdev_ioctl+0x149/0x1c0 drivers/mtd/ubi/cdev.c:1043 [<000000004c359338>] vfs_ioctl fs/ioctl.c:47 [inline] [<000000004c359338>] file_ioctl fs/ioctl.c:545 [inline] [<000000004c359338>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732 [<000000002f3b4a0e>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749 [<0000000071dee951>] __do_sys_ioctl fs/ioctl.c:756 [inline] [<0000000071dee951>] __se_sys_ioctl fs/ioctl.c:754 [inline] [<0000000071dee951>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754 [<0000000069d4ede5>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294 [<000000001a44675f>] 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