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[23.128.96.18]) by mx.google.com with ESMTP id qq26si6817826ejb.103.2020.10.09.12.54.41; Fri, 09 Oct 2020 12:55:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=STKvYthk; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=ibm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732140AbgJIR3z (ORCPT + 99 others); Fri, 9 Oct 2020 13:29:55 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:28922 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731996AbgJIR31 (ORCPT ); Fri, 9 Oct 2020 13:29:27 -0400 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 099H1kAB105028; Fri, 9 Oct 2020 13:29:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=to : cc : from : subject : message-id : date : mime-version : content-type : content-transfer-encoding; s=pp1; bh=vR8EY0Sqz+XxE9v+PvH0iVTvWSXmGHsJNblzjPinpi8=; b=STKvYthk42qZ/LL+Aav7LmFf5aq+w7ub3DRyvHVdk/XVlcDYh4xsUmfMgcwUP1Tffdrx qWEFWVKB+M+WRKIjh18cosXDVe5CxdPl7uBYTjRHLCAknt5/HfX9UObYMrJk/9dSynb0 9eyhsaXnWO6CJLhR8W4hQ5NvUChxLugrB26WJSWwwQXu+PaSDsEgsCOQaAHQ0NeIChfA Hh2s9Dmt5sqF3j9JX00WhyGhecwR34ChSUNGTfmFXsSJ6RNkSXunKpzx/obBnGHP6mYS P5h4x4L3185lCYQ+Z7ZvRL44/p1PdA1sjLhNDYp3lBUbSyKOphj0+wCMjuc2gWpTN3Q/ IQ== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 342uf29kru-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 09 Oct 2020 13:29:20 -0400 Received: from m0098399.ppops.net (m0098399.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 099H2Hsg107016; Fri, 9 Oct 2020 13:29:20 -0400 Received: from ppma04fra.de.ibm.com (6a.4a.5195.ip4.static.sl-reverse.com [149.81.74.106]) by mx0a-001b2d01.pphosted.com with ESMTP id 342uf29krb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 09 Oct 2020 13:29:20 -0400 Received: from pps.filterd (ppma04fra.de.ibm.com [127.0.0.1]) by ppma04fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 099HBvpd000793; Fri, 9 Oct 2020 17:29:17 GMT Received: from b06avi18878370.portsmouth.uk.ibm.com (b06avi18878370.portsmouth.uk.ibm.com [9.149.26.194]) by ppma04fra.de.ibm.com with ESMTP id 3429hs0edc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 09 Oct 2020 17:29:17 +0000 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 099HTFJt19726790 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 9 Oct 2020 17:29:15 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 84B6342045; Fri, 9 Oct 2020 17:29:15 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8BE9B42041; Fri, 9 Oct 2020 17:29:14 +0000 (GMT) Received: from [9.199.46.138] (unknown [9.199.46.138]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 9 Oct 2020 17:29:14 +0000 (GMT) To: linux-ext4@vger.kernel.org Cc: Jan Kara , Eric Whitney , "Theodore Ts'o" From: Ritesh Harjani Subject: xfstests global-ext4/1k generic/219 failure due to dmesg warning of "circular locking dependency detected" Message-ID: <2eb09d70-b56e-2c0b-8ef4-0479d7be2bb3@linux.ibm.com> Date: Fri, 9 Oct 2020 22:59:13 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-10-09_08:2020-10-09,2020-10-09 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 clxscore=1015 mlxscore=0 mlxlogscore=999 suspectscore=3 malwarescore=0 adultscore=0 priorityscore=1501 bulkscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010090125 Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Hello All, While running generic/219 fstests on a 1k blocksize on x86 box, I see below dmesg warning msg and generic/219 fails. I haven't yet analyzed it, but I remember I have seen such warnings before as well in my testing. I was wondering if others have also seen it in their testing or not and if this is any known issue? Here it goes, 219.dmesg file. [14459.933253] run fstests generic/219 at 2020-10-08 20:03:27 [14462.947295] EXT4-fs (vdc): mounted filesystem with ordered data mode. Opts: acl,user_xattr,block_validity,usrquota,grpquota [14462.992869] EXT4-fs (vdc): re-mounted. Opts: (null) [14463.017058] EXT4-fs (vdc): re-mounted. Opts: (null) [14463.727095] EXT4-fs (vdc): mounted filesystem with ordered data mode. Opts: usrquota [14463.837130] EXT4-fs (vdc): re-mounted. Opts: (null) [14463.874293] EXT4-fs (vdc): re-mounted. Opts: (null) [14464.149407] ====================================================== [14464.149407] WARNING: possible circular locking dependency detected [14464.149407] 5.9.0-rc8-next-20201008 #16 Not tainted [14464.149407] ------------------------------------------------------ [14464.149407] chown/23358 is trying to acquire lock: [14464.149407] ffff8b9b8ff60be0 (&ei->i_data_sem){++++}-{3:3}, at: ext4_map_blocks+0xd1/0x640 [14464.149407] but task is already holding lock: [14464.149407] ffff8b9b8963c208 (&s->s_dquot.dqio_sem){++++}-{3:3}, at: v2_write_dquot+0x2d/0xb0 [14464.149407] which lock already depends on the new lock. [14464.149407] the existing dependency chain (in reverse order) is: [14464.149407] -> #2 (&s->s_dquot.dqio_sem){++++}-{3:3}: [14464.149407] down_read+0x41/0x200 [14464.149407] v2_read_dquot+0x23/0x60 [14464.149407] dquot_acquire+0x4c/0x100 [14464.149407] ext4_acquire_dquot+0x72/0xc0 [14464.149407] dqget+0x24a/0x4a0 [14464.149407] __dquot_initialize+0x1f0/0x330 [14464.149407] ext4_create+0x38/0x190 [14464.149407] lookup_open+0x4cd/0x630 [14464.149407] path_openat+0x2c4/0xa10 [14464.149407] do_filp_open+0x91/0x100 [14464.149407] do_sys_openat2+0x20d/0x2d0 [14464.149407] do_sys_open+0x44/0x80 [14464.149407] do_syscall_64+0x33/0x40 [14464.149407] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [14464.149407] -> #1 (&dquot->dq_lock){+.+.}-{3:3}: [14464.149407] __mutex_lock+0xaa/0x9c0 [14464.149407] dquot_commit+0x23/0xf0 [14464.149407] ext4_write_dquot+0x78/0xb0 [14464.149407] __dquot_alloc_space+0x151/0x310 [14464.149407] ext4_mb_new_blocks+0x1f6/0x12e0 [14464.149407] ext4_ext_map_blocks+0x9c3/0x1470 [14464.149407] ext4_map_blocks+0xf4/0x640 [14464.149407] _ext4_get_block+0x90/0x110 [14464.149407] ext4_block_write_begin+0x15f/0x5a0 [14464.149407] ext4_write_begin+0x267/0x5b0 [14464.149407] generic_perform_write+0xc2/0x1e0 [14464.149407] ext4_buffered_write_iter+0x8b/0x130 [14464.149407] ext4_file_write_iter+0x6c/0x6d0 [14464.149407] new_sync_write+0x122/0x1b0 [14464.149407] vfs_write+0x1ca/0x230 [14464.149407] ksys_pwrite64+0x68/0xa0 [14464.149407] do_syscall_64+0x33/0x40 [14464.149407] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [14464.149407] -> #0 (&ei->i_data_sem){++++}-{3:3}: [14464.149407] __lock_acquire+0x147b/0x2830 [14464.149407] lock_acquire+0xc6/0x3a0 [14464.149407] down_write+0x40/0x110 [14464.149407] ext4_map_blocks+0xd1/0x640 [14464.149407] ext4_getblk+0x54/0x1c0 [14464.149407] ext4_bread+0x1f/0xd0 [14464.149407] ext4_quota_write+0xbf/0x280 [14464.149407] write_blk+0x35/0x70 [14464.149407] get_free_dqblk+0x42/0xa0 [14464.149407] do_insert_tree+0x1d6/0x480 [14464.149407] do_insert_tree+0x464/0x480 [14464.149407] do_insert_tree+0x218/0x480 [14464.149407] do_insert_tree+0x218/0x480 [14464.149407] qtree_write_dquot+0x79/0x1b0 [14464.149407] v2_write_dquot+0x52/0xb0 [14464.149407] dquot_acquire+0x8e/0x100 [14464.149407] ext4_acquire_dquot+0x72/0xc0 [14464.149407] dqget+0x24a/0x4a0 [14464.149407] dquot_transfer+0xfe/0x140 [14464.149407] ext4_setattr+0x134/0x9c0 [14464.149407] notify_change+0x34b/0x490 [14464.149407] chown_common+0x96/0x150 [14464.149407] do_fchownat+0x8d/0xe0 [14464.149407] __x64_sys_fchownat+0x21/0x30 [14464.149407] do_syscall_64+0x33/0x40 [14464.149407] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [14464.149407] other info that might help us debug this: [14464.149407] Chain exists of: &ei->i_data_sem --> &dquot->dq_lock --> &s->s_dquot.dqio_sem [14464.149407] Possible unsafe locking scenario: [14464.149407] CPU0 CPU1 [14464.149407] ---- ---- [14464.149407] lock(&s->s_dquot.dqio_sem); [14464.149407] lock(&dquot->dq_lock); [14464.149407] lock(&s->s_dquot.dqio_sem); [14464.149407] lock(&ei->i_data_sem); [14464.149407] *** DEADLOCK *** [14464.149407] 6 locks held by chown/23358: [14464.149407] #0: ffff8b9b8963c480 (sb_writers#3){++++}-{0:0}, at: mnt_want_write+0x20/0x50 [14464.149407] #1: ffff8b9b8ff64bc8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: chown_common+0x85/0x150 [14464.149407] #2: ffff8b9b670c48d8 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1ad/0x690 [14464.149407] #3: ffff8b9b8ff648d0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_setattr+0x129/0x9c0 [14464.149407] #4: ffff8b9b1313f5f0 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_acquire+0x23/0x100 [14464.149407] #5: ffff8b9b8963c208 (&s->s_dquot.dqio_sem){++++}-{3:3}, at: v2_write_dquot+0x2d/0xb0 [14464.149407] stack backtrace: [14464.149407] CPU: 5 PID: 23358 Comm: chown Not tainted 5.9.0-rc8-next-20201008 #16 [14464.149407] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014 [14464.149407] Call Trace: [14464.149407] dump_stack+0x77/0x97 [14464.149407] check_noncircular+0x132/0x150 [14464.149407] ? sched_clock_local+0x12/0x80 [14464.149407] __lock_acquire+0x147b/0x2830 [14464.149407] lock_acquire+0xc6/0x3a0 [14464.149407] ? ext4_map_blocks+0xd1/0x640 [14464.149407] down_write+0x40/0x110 [14464.149407] ? ext4_map_blocks+0xd1/0x640 [14464.149407] ext4_map_blocks+0xd1/0x640 [14464.149407] ? sched_clock_local+0x12/0x80 [14464.149407] ext4_getblk+0x54/0x1c0 [14464.149407] ext4_bread+0x1f/0xd0 [14464.149407] ext4_quota_write+0xbf/0x280 [14464.149407] write_blk+0x35/0x70 [14464.149407] get_free_dqblk+0x42/0xa0 [14464.149407] do_insert_tree+0x1d6/0x480 [14464.149407] ? ext4_quota_read+0x9d/0x110 [14464.149407] do_insert_tree+0x464/0x480 [14464.149407] ? ext4_quota_read+0x9d/0x110 [14464.149407] do_insert_tree+0x218/0x480 [14464.149407] ? ext4_quota_read+0x9d/0x110 [14464.149407] do_insert_tree+0x218/0x480 [14464.149407] ? __kmalloc+0x319/0x350 [14464.149407] qtree_write_dquot+0x79/0x1b0 [14464.149407] v2_write_dquot+0x52/0xb0 [14464.149407] dquot_acquire+0x8e/0x100 [14464.149407] ext4_acquire_dquot+0x72/0xc0 [14464.149407] dqget+0x24a/0x4a0 [14464.149407] dquot_transfer+0xfe/0x140 [14464.149407] ext4_setattr+0x134/0x9c0 [14464.149407] notify_change+0x34b/0x490 [14464.149407] ? chown_common+0x96/0x150 [14464.149407] chown_common+0x96/0x150 [14464.149407] ? preempt_count_add+0x49/0xa0 [14464.149407] do_fchownat+0x8d/0xe0 [14464.149407] __x64_sys_fchownat+0x21/0x30 [14464.149407] do_syscall_64+0x33/0x40 [14464.149407] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [14464.149407] RIP: 0033:0x7efd3d2666ca [14464.149407] Code: 48 8b 0d c9 f7 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 04 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 96 f7 0c 00 f7 d8 64 89 01 48 [14464.149407] RSP: 002b:00007ffdbe6ae418 EFLAGS: 00000206 ORIG_RAX: 0000000000000104 [14464.149407] RAX: ffffffffffffffda RBX: 00007ffdbe6ae650 RCX: 00007efd3d2666ca [14464.149407] RDX: 0000000000007ab7 RSI: 00005598d654ef60 RDI: 00000000ffffff9c [14464.149407] RBP: 00000000ffffff9c R08: 0000000000000000 R09: 00000000ffffffff [14464.149407] R10: 00000000ffffffff R11: 0000000000000206 R12: 00005598d654e1f0 [14464.149407] R13: 00005598d654e268 R14: 0000000000007ab7 R15: 00000000ffffffff [14465.070206] EXT4-fs (vdc): mounted filesystem with ordered data mode. Opts: grpquota [14465.165678] EXT4-fs (vdc): re-mounted. Opts: (null) [14465.201132] EXT4-fs (vdc): re-mounted. Opts: (null)