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 7E9D1C433EF for ; Wed, 16 Feb 2022 04:45:28 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C32B86B0078; Tue, 15 Feb 2022 23:45:27 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BBB806B007E; Tue, 15 Feb 2022 23:45:27 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9E6EC6B0080; Tue, 15 Feb 2022 23:45:27 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0099.hostedemail.com [216.40.44.99]) by kanga.kvack.org (Postfix) with ESMTP id 897E66B0078 for ; Tue, 15 Feb 2022 23:45:27 -0500 (EST) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 34C103884F for ; Wed, 16 Feb 2022 04:45:27 +0000 (UTC) X-FDA: 79147404294.27.65E67DF Received: from lgeamrelo11.lge.com (lgeamrelo12.lge.com [156.147.23.52]) by imf05.hostedemail.com (Postfix) with ESMTP id 27928100006 for ; Wed, 16 Feb 2022 04:45:24 +0000 (UTC) Received: from unknown (HELO lgeamrelo04.lge.com) (156.147.1.127) by 156.147.23.52 with ESMTP; 16 Feb 2022 13:15:23 +0900 X-Original-SENDERIP: 156.147.1.127 X-Original-MAILFROM: byungchul.park@lge.com Received: from unknown (HELO localhost.localdomain) (10.177.244.38) by 156.147.1.127 with ESMTP; 16 Feb 2022 13:15:23 +0900 X-Original-SENDERIP: 10.177.244.38 X-Original-MAILFROM: byungchul.park@lge.com From: Byungchul Park To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org Cc: torvalds@linux-foundation.org, mingo@redhat.com, linux-kernel@vger.kernel.org, peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, chris@chris-wilson.co.uk, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, bfields@fieldses.org, gregkh@linuxfoundation.org, kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org, mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org, vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com, dennis@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org, linux-block@vger.kernel.org, axboe@kernel.dk, paolo.valente@linaro.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, airlied@linux.ie, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com Subject: Report in ext4_buffered_write_iter() Date: Wed, 16 Feb 2022 13:15:13 +0900 Message-Id: <1644984918-27955-1-git-send-email-byungchul.park@lge.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1644984711-26423-1-git-send-email-byungchul.park@lge.com> References: <1644984711-26423-1-git-send-email-byungchul.park@lge.com> X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 27928100006 X-Stat-Signature: yxi3sraa4z1ar39tf3yj5n9ak5996nb5 Authentication-Results: imf05.hostedemail.com; dkim=none; spf=pass (imf05.hostedemail.com: domain of byungchul.park@lge.com designates 156.147.23.52 as permitted sender) smtp.mailfrom=byungchul.park@lge.com; dmarc=none X-HE-Tag: 1644986724-215897 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: [ 7.083356] =================================================== [ 7.083360] DEPT: Circular dependency has been detected. [ 7.083361] 5.17.0-rc1-00014-gcf3441bb2012 #2 Tainted: G W [ 7.083363] --------------------------------------------------- [ 7.083364] summary [ 7.083364] --------------------------------------------------- [ 7.083365] *** DEADLOCK *** [ 7.083365] [ 7.083366] context A [ 7.083366] [S] (unknown)(&(&journal->j_wait_commit)->dmap:0) [ 7.083368] [W] down_write(&sb->s_type->i_mutex_key:0) [ 7.083370] [E] event(&(&journal->j_wait_commit)->dmap:0) [ 7.083371] [ 7.083371] context B [ 7.083372] [S] __raw_write_lock(&journal->j_state_lock:8) [ 7.083373] [W] wait(&(&journal->j_wait_commit)->dmap:0) [ 7.083374] [E] write_unlock(&journal->j_state_lock:8) [ 7.083375] [ 7.083376] context C [ 7.083377] [S] down_write(&sb->s_type->i_mutex_key:0) [ 7.083378] [W] __raw_read_lock(&journal->j_state_lock:8) [ 7.083379] [E] up_write(&sb->s_type->i_mutex_key:0) [ 7.083380] [ 7.083380] [S]: start of the event context [ 7.083381] [W]: the wait blocked [ 7.083382] [E]: the event not reachable [ 7.083382] --------------------------------------------------- [ 7.083383] context A's detail [ 7.083384] --------------------------------------------------- [ 7.083384] context A [ 7.083385] [S] (unknown)(&(&journal->j_wait_commit)->dmap:0) [ 7.083386] [W] down_write(&sb->s_type->i_mutex_key:0) [ 7.083387] [E] event(&(&journal->j_wait_commit)->dmap:0) [ 7.083388] [ 7.083388] [S] (unknown)(&(&journal->j_wait_commit)->dmap:0): [ 7.083389] (N/A) [ 7.083390] [ 7.083391] [W] down_write(&sb->s_type->i_mutex_key:0): [ 7.083391] [] ext4_buffered_write_iter+0x37/0x100 [ 7.083398] stacktrace: [ 7.083399] down_write+0x68/0x580 [ 7.083402] ext4_buffered_write_iter+0x37/0x100 [ 7.083404] ext4_file_write_iter+0x4a/0x7f0 [ 7.083406] new_sync_write+0x100/0x190 [ 7.083409] vfs_write+0x134/0x360 [ 7.083411] ksys_write+0x4d/0xc0 [ 7.083413] do_syscall_64+0x3a/0x90 [ 7.083415] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 7.083417] [ 7.083418] [E] event(&(&journal->j_wait_commit)->dmap:0): [ 7.083419] [] __wake_up_common+0x93/0x1a0 [ 7.083421] stacktrace: [ 7.083422] dept_event+0x12b/0x1f0 [ 7.083424] __wake_up_common+0xb0/0x1a0 [ 7.083426] __wake_up_common_lock+0x65/0x90 [ 7.083427] __jbd2_log_start_commit+0x8a/0xa0 [ 7.083430] jbd2_log_start_commit+0x24/0x40 [ 7.083431] __jbd2_journal_force_commit+0x91/0xb0 [ 7.083433] jbd2_journal_force_commit_nested+0x5/0x10 [ 7.083434] ext4_should_retry_alloc+0x5b/0xb0 [ 7.083436] ext4_da_write_begin+0xf2/0x2a0 [ 7.083439] generic_perform_write+0xa6/0x1c0 [ 7.083440] ext4_buffered_write_iter+0x89/0x100 [ 7.083442] ext4_file_write_iter+0x4a/0x7f0 [ 7.083444] new_sync_write+0x100/0x190 [ 7.083446] vfs_write+0x134/0x360 [ 7.083448] ksys_write+0x4d/0xc0 [ 7.083449] do_syscall_64+0x3a/0x90 [ 7.083451] --------------------------------------------------- [ 7.083452] context B's detail [ 7.083452] --------------------------------------------------- [ 7.083453] context B [ 7.083453] [S] __raw_write_lock(&journal->j_state_lock:8) [ 7.083454] [W] wait(&(&journal->j_wait_commit)->dmap:0) [ 7.083455] [E] write_unlock(&journal->j_state_lock:8) [ 7.083457] [ 7.083457] [S] __raw_write_lock(&journal->j_state_lock:8): [ 7.083458] [] kjournald2+0x7e/0x260 [ 7.083460] stacktrace: [ 7.083460] _raw_write_lock+0x6e/0x90 [ 7.083462] kjournald2+0x7e/0x260 [ 7.083463] kthread+0xe3/0x110 [ 7.083466] ret_from_fork+0x22/0x30 [ 7.083469] [ 7.083469] [W] wait(&(&journal->j_wait_commit)->dmap:0): [ 7.083470] [] prepare_to_wait+0x47/0xd0 [ 7.083472] stacktrace: [ 7.083473] kjournald2+0x164/0x260 [ 7.083474] kthread+0xe3/0x110 [ 7.083476] ret_from_fork+0x22/0x30 [ 7.083477] [ 7.083478] [E] write_unlock(&journal->j_state_lock:8): [ 7.083479] [] kjournald2+0x1eb/0x260 [ 7.083480] stacktrace: [ 7.083481] _raw_write_unlock+0x30/0x70 [ 7.083483] kjournald2+0x1eb/0x260 [ 7.083484] kthread+0xe3/0x110 [ 7.083486] ret_from_fork+0x22/0x30 [ 7.083487] --------------------------------------------------- [ 7.083488] context C's detail [ 7.083488] --------------------------------------------------- [ 7.083489] context C [ 7.083490] [S] down_write(&sb->s_type->i_mutex_key:0) [ 7.083491] [W] __raw_read_lock(&journal->j_state_lock:8) [ 7.083492] [E] up_write(&sb->s_type->i_mutex_key:0) [ 7.083493] [ 7.083493] [S] down_write(&sb->s_type->i_mutex_key:0): [ 7.083494] [] do_truncate+0x58/0xa0 [ 7.083496] stacktrace: [ 7.083497] down_write+0x8a/0x580 [ 7.083498] do_truncate+0x58/0xa0 [ 7.083500] path_openat+0x646/0x9c0 [ 7.083502] do_filp_open+0xaf/0x110 [ 7.083504] do_sys_openat2+0x1ff/0x300 [ 7.083505] do_sys_open+0x51/0x60 [ 7.083507] do_syscall_64+0x3a/0x90 [ 7.083509] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 7.083511] [ 7.083511] [W] __raw_read_lock(&journal->j_state_lock:8): [ 7.083512] [] start_this_handle+0xa7/0x5e0 [ 7.083515] stacktrace: [ 7.083516] _raw_read_lock+0x57/0xd0 [ 7.083518] start_this_handle+0xa7/0x5e0 [ 7.083519] jbd2__journal_start+0xe6/0x220 [ 7.083521] __ext4_journal_start_sb+0x11c/0x150 [ 7.083523] ext4_setattr+0x436/0x8f0 [ 7.083524] notify_change+0x352/0x4c0 [ 7.083527] do_truncate+0x6a/0xa0 [ 7.083528] path_openat+0x646/0x9c0 [ 7.083530] do_filp_open+0xaf/0x110 [ 7.083531] do_sys_openat2+0x1ff/0x300 [ 7.083533] do_sys_open+0x51/0x60 [ 7.083535] do_syscall_64+0x3a/0x90 [ 7.083536] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 7.083538] [ 7.083539] [E] up_write(&sb->s_type->i_mutex_key:0): [ 7.083540] [] do_truncate+0x81/0xa0 [ 7.083541] stacktrace: [ 7.083542] up_write+0x36/0x170 [ 7.083545] do_truncate+0x81/0xa0 [ 7.083547] path_openat+0x646/0x9c0 [ 7.083548] do_filp_open+0xaf/0x110 [ 7.083550] do_sys_openat2+0x1ff/0x300 [ 7.083552] do_sys_open+0x51/0x60 [ 7.083553] do_syscall_64+0x3a/0x90 [ 7.083555] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 7.083557] --------------------------------------------------- [ 7.083557] information that might be helpful [ 7.083558] --------------------------------------------------- [ 7.083559] CPU: 2 PID: 628 Comm: rs:main Q:Reg Tainted: G W 5.17.0-rc1-00014-gcf3441bb2012 #2 [ 7.083561] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 7.083563] Call Trace: [ 7.083564] [ 7.083565] dump_stack_lvl+0x44/0x57 [ 7.083568] print_circle+0x384/0x510 [ 7.083570] ? __kernel_text_address+0x9/0x30 [ 7.083572] ? print_circle+0x510/0x510 [ 7.083574] cb_check_dl+0x58/0x60 [ 7.083575] bfs+0xdc/0x1b0 [ 7.083578] add_dep+0x94/0x120 [ 7.083580] do_event.isra.22+0x284/0x300 [ 7.083582] ? __wake_up_common+0x93/0x1a0 [ 7.083583] dept_event+0x12b/0x1f0 [ 7.083586] __wake_up_common+0xb0/0x1a0 [ 7.083588] __wake_up_common_lock+0x65/0x90 [ 7.083590] __jbd2_log_start_commit+0x8a/0xa0 [ 7.083591] jbd2_log_start_commit+0x24/0x40 [ 7.083593] __jbd2_journal_force_commit+0x91/0xb0 [ 7.083595] jbd2_journal_force_commit_nested+0x5/0x10 [ 7.083597] ext4_should_retry_alloc+0x5b/0xb0 [ 7.083598] ext4_da_write_begin+0xf2/0x2a0 [ 7.083601] generic_perform_write+0xa6/0x1c0 [ 7.083604] ext4_buffered_write_iter+0x89/0x100 [ 7.083606] ext4_file_write_iter+0x4a/0x7f0 [ 7.083609] new_sync_write+0x100/0x190 [ 7.083612] vfs_write+0x134/0x360 [ 7.083615] ksys_write+0x4d/0xc0 [ 7.083616] ? trace_hardirqs_on+0x38/0xe0 [ 7.083619] do_syscall_64+0x3a/0x90 [ 7.083621] entry_SYSCALL_64_after_hwframe+0x44/0xae