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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 EC655C433F5 for ; Fri, 3 Sep 2021 07:37:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D5D9B60E0B for ; Fri, 3 Sep 2021 07:37:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234769AbhICHiD (ORCPT ); Fri, 3 Sep 2021 03:38:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234753AbhICHiD (ORCPT ); Fri, 3 Sep 2021 03:38:03 -0400 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74AEBC061575; Fri, 3 Sep 2021 00:37:03 -0700 (PDT) Received: by mail-pj1-x102e.google.com with SMTP id gp20-20020a17090adf1400b00196b761920aso3338168pjb.3; Fri, 03 Sep 2021 00:37:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:from:date:message-id:subject:to:cc; bh=FKvnkYvCCV9yybeFJ+/WkttMSAftWgrhCoPh7G7odr0=; b=aYrKPW6qNSFPaFNpkVKwOlb4QB+sg685XkMN+79F/Pwl7dK3Fct3zpubwjDfJWzC9l T2k9GMmxiVG6o1hkV6EjWjdcR3HuHQ+JHvFGIR4Pq/KRXNz2G4Lv5R8q/DP32sVRVOt2 SrkOPdJXFfnqs0Lxnsxs6mSObay6kFc8Oq0FCqWGspvhbIrLUB0u820Zk49MhYYOLF3k vGjaVkkfEfyZD78lGPiBmr7WLt9Si1+Sac9Kb/cK/YRRL0jf8HgpEzRAq4SeERTbFvNN NMMYt//CkCT4wP8RnGUb3emyXWr58O9tZly0zBbvxXaglVlQvoIhML5tRcdgPyPY4aGa h1KA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=FKvnkYvCCV9yybeFJ+/WkttMSAftWgrhCoPh7G7odr0=; b=iiXh/7kx4KaQwD2VbapG0el5yBs7CrRvo2kLE9kBHvi/fo+cidkTGk5mhE9RpigleG 4iEjQZG8+km/px1TLbwhUPuLk4VGuS1Bsx1HR5+TziSQI/qNKYojDz4w6Pi0NaueqhRm 2Kd7pxlsIK9eApb9pA/NHQe3IDnSMAuidnEubAfseeO5jXO9Zi9qfZ5B7MS62DQKlgD/ 5K5Bf+9YqRrh6FlHtNJkMcgLe32ThPMvyx6DTuGtrz7vnwFT1quQp1STuxxGTPDMCqmG 5s+HZhEGIp4A8cSKofWAJUDNMdtwKMadn6ZBYio0desI+PA3cegmfRNP/NaQOuRF+j9b vX6w== X-Gm-Message-State: AOAM532q3+OiB7rOnvzisBzoQ1BCzywMKZzyUUAyMxksJlSNVP4b1une n8myI7s94uJ+bcgd6KAzwJtWD1/9PiGZBHlxU+ECBOXflAKXVO4= X-Google-Smtp-Source: ABdhPJxcnc4+K6XEzc9rDAJCpy1vOBfHt7N0POPmHwv3kSz7dLrJiSOY9BbHSrU3PjOPPq1UpzmdXrHZuNmyd+pREak= X-Received: by 2002:a17:902:e5c1:b0:138:bac2:6163 with SMTP id u1-20020a170902e5c100b00138bac26163mr2109338plf.63.1630654622809; Fri, 03 Sep 2021 00:37:02 -0700 (PDT) MIME-Version: 1.0 From: Hao Sun Date: Fri, 3 Sep 2021 15:36:51 +0800 Message-ID: Subject: WARNING in loop_add To: axboe@kernel.dk, linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hello, When using Healer to fuzz the latest Linux kernel, the following crash was triggered. HEAD commit: 7d2a07b76933 Linux 5.14 git tree: upstream console output: https://drive.google.com/file/d/1lL94fy2uAtUMlfTnDDI6ooGLUGGvlDwl/view?usp=sharing kernel config: https://drive.google.com/file/d/1XD9WYDViQLSXN7RGwH8AGGDvP9JvOghx/view?usp=sharing C reproducer: https://drive.google.com/file/d/12LXTfEg30h-Y6s5smCLIP7Jtr3g6PFOK/view?usp=sharing Syzlang reproducer: https://drive.google.com/file/d/1mUCxjzeD5w2bOjuw80srDBwpCh0zSpdW/view?usp=sharing If you fix this issue, please add the following tag to the commit: Reported-by: Hao Sun oop4: detected capacity change from 0 to 20480 ISOFS: Unable to identify CD-ROM format. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10131 Comm: syz-executor Not tainted 5.14.0 #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:105 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x10 mm/slab_common.c:1326 slab_pre_alloc_hook mm/slab.h:494 [inline] slab_alloc_node mm/slub.c:2880 [inline] slab_alloc mm/slub.c:2967 [inline] kmem_cache_alloc_trace+0x62/0x350 mm/slub.c:2984 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] device_create_groups_vargs+0x8a/0x280 drivers/base/core.c:3996 device_create+0xdf/0x120 drivers/base/core.c:4056 bdi_register_va.part.0+0x9c/0x800 mm/backing-dev.c:871 bdi_register_va mm/backing-dev.c:906 [inline] bdi_register+0x12a/0x140 mm/backing-dev.c:903 __device_add_disk+0x923/0xd10 block/genhd.c:521 add_disk include/linux/genhd.h:217 [inline] loop_add+0x6ec/0x8c0 drivers/block/loop.c:2395 loop_control_ioctl+0x130/0x3c0 drivers/block/loop.c:2492 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4739cd Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6e331da198 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000059c0a0 RCX: 00000000004739cd RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 RBP: 00007f6e331da1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000030 R13: 00007ffe496b21bf R14: 00007ffe496b2360 R15: 00007f6e331da300 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10131 at block/genhd.c:523 __device_add_disk+0xba9/0xd10 block/genhd.c:523 Modules linked in: CPU: 1 PID: 10131 Comm: syz-executor Not tainted 5.14.0 #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:__device_add_disk+0xba9/0xd10 block/genhd.c:523 Code: fd ff ff 4c 89 ef 89 44 24 28 e8 22 a5 f3 fd 8b 44 24 28 e9 6f fd ff ff 4c 89 ef e8 a1 a4 f3 fd e9 d5 fd ff ff e8 f7 b6 ac fd <0f> 0b e9 8c fd ff ff 48 8b 7c 24 08 e8 96 a4 f3 fd e9 0a f6 ff ff RSP: 0018:ffffc90006527dc0 EFLAGS: 00010216 RAX: 0000000000027667 RBX: ffff888107d54ec0 RCX: 0000000000040000 RDX: ffffc90000889000 RSI: ffff888104715640 RDI: 0000000000000002 RBP: ffff888110beb400 R08: ffffffff83c84189 R09: 0000000000000000 R10: 0000000000000005 R11: fffffbfff17578ea R12: 0000000000000001 R13: ffff888107d5539c R14: ffff888110beb4a0 R15: 0000000000000000 FS: 00007f6e331da700(0000) GS:ffff888119f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005572256db150 CR3: 0000000104b9f006 CR4: 0000000000770ee0 PKRU: 55555554 Call Trace: add_disk include/linux/genhd.h:217 [inline] loop_add+0x6ec/0x8c0 drivers/block/loop.c:2395 loop_control_ioctl+0x130/0x3c0 drivers/block/loop.c:2492 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4739cd Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6e331da198 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000059c0a0 RCX: 00000000004739cd RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 RBP: 00007f6e331da1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000030 R13: 00007ffe496b21bf R14: 00007ffe496b2360 R15: 00007f6e331da300