From: Larry Finger <Larry.Finger@lwfinger.net>
To: LKML <linux-kernel@vger.kernel.org>, aia21@cantab.net
Subject: Possible circular locking in ntfs on 2.6.19-rc5-mm2
Date: Fri, 24 Nov 2006 10:17:21 -0600 [thread overview]
Message-ID: <45671B11.5010801@lwfinger.net> (raw)
On kernel 2.6.19-rc5-mm2, my log shows the following dump of a possible circular locking problem.
The dump occurred while running an updatedb command that was initiated by cron.
Nov 24 02:13:23 larrylap kernel: =======================================================
Nov 24 02:13:23 larrylap kernel: [ INFO: possible circular locking dependency detected ]
Nov 24 02:13:23 larrylap kernel: 2.6.19-rc5-mm2-DSCA #4
Nov 24 02:13:23 larrylap kernel: -------------------------------------------------------
Nov 24 02:13:23 larrylap kernel: find/32325 is trying to acquire lock:
Nov 24 02:13:23 larrylap kernel: (iprune_mutex){--..}, at: [<c0325689>] mutex_lock+0x29/0x30
Nov 24 02:13:23 larrylap kernel:
Nov 24 02:13:23 larrylap kernel: but task is already holding lock:
Nov 24 02:13:23 larrylap kernel: (&ni->mrec_lock){--..}, at: [<c0325689>] mutex_lock+0x29/0x30
Nov 24 02:13:23 larrylap kernel:
Nov 24 02:13:23 larrylap kernel: which lock already depends on the new lock.
Nov 24 02:13:23 larrylap kernel:
Nov 24 02:13:25 larrylap kernel:
Nov 24 02:13:25 larrylap kernel: the existing dependency chain (in reverse order) is:
Nov 24 02:13:25 larrylap kernel:
Nov 24 02:13:25 larrylap kernel: -> #2 (&ni->mrec_lock){--..}:
Nov 24 02:13:25 larrylap kernel: [<c01334ad>] add_lock_to_list+0x3d/0xb0
Nov 24 02:13:25 larrylap kernel: [<c0135b07>] __lock_acquire+0xac7/0xcd0
Nov 24 02:13:25 larrylap kernel: [<c0136092>] lock_acquire+0x62/0x80
Nov 24 02:13:25 larrylap kernel: [<c032545f>] __mutex_lock_slowpath+0x7f/0x280
Nov 24 02:13:25 larrylap kernel: [<c0325689>] mutex_lock+0x29/0x30
Nov 24 02:13:25 larrylap kernel: [<e583b0bc>] map_mft_record+0x1c/0x260 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<e5832d9c>] ntfs_map_runlist_nolock+0x3dc/0x520 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<e5833304>] ntfs_map_runlist+0x54/0x80 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<e5831af8>] ntfs_readpage+0x7d8/0x930 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<c0144ce3>] read_cache_page+0xa3/0x180
Nov 24 02:13:25 larrylap kernel: [<e5834f86>] ntfs_lookup_inode_by_name+0x3c6/0xde0 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<e583bb25>] ntfs_lookup+0x65/0x5e0 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<c016d184>] do_lookup+0x144/0x190
Nov 24 02:13:25 larrylap kernel: [<c016d314>] __link_path_walk+0x144/0xe00
Nov 24 02:13:25 larrylap kernel: [<c016e01e>] link_path_walk+0x4e/0xe0
Nov 24 02:13:25 larrylap kernel: [<c016e3ec>] do_path_lookup+0x8c/0x1d0
Nov 24 02:13:25 larrylap kernel: [<c016ea7a>] __path_lookup_intent_open+0x4a/0x90
Nov 24 02:13:25 larrylap kernel: [<c016eb4a>] path_lookup_open+0x2a/0x30
Nov 24 02:13:25 larrylap kernel: [<c016edd7>] open_namei+0x77/0x6a0
Nov 24 02:13:25 larrylap kernel: [<c0163c28>] do_filp_open+0x38/0x60
Nov 24 02:13:25 larrylap kernel: [<c0163c9b>] do_sys_open+0x4b/0x100
Nov 24 02:13:25 larrylap kernel: [<c0163da7>] sys_open+0x27/0x30
Nov 24 02:13:25 larrylap kernel: [<c0102fb2>] sysenter_past_esp+0x5f/0x99
Nov 24 02:13:25 larrylap kernel: [<b7f72410>] 0xb7f72410
Nov 24 02:13:25 larrylap kernel: [<ffffffff>] 0xffffffff
Nov 24 02:13:25 larrylap kernel:
Nov 24 02:13:25 larrylap kernel: -> #1 (&rl->lock){----}:
Nov 24 02:13:25 larrylap kernel: [<c01334ad>] add_lock_to_list+0x3d/0xb0
Nov 24 02:13:25 larrylap kernel: [<c0135b07>] __lock_acquire+0xac7/0xcd0
Nov 24 02:13:25 larrylap kernel: [<c0136092>] lock_acquire+0x62/0x80
Nov 24 02:13:25 larrylap kernel: [<c0130165>] down_write+0x55/0x70
Nov 24 02:13:25 larrylap kernel: [<e5837965>] __ntfs_clear_inode+0x15/0x160 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<e5837b99>] ntfs_clear_big_inode+0x69/0xf0 [ntfs]
Nov 24 02:13:25 larrylap kernel: [<c0178a62>] clear_inode+0x92/0x130
Nov 24 02:13:25 larrylap kernel: [<c0178b28>] dispose_list+0x28/0x100
Nov 24 02:13:25 larrylap kernel: [<c0178ded>] shrink_icache_memory+0x1ed/0x220
Nov 24 02:13:26 larrylap kernel: [<c014deb2>] shrink_slab+0x122/0x1a0
Nov 24 02:13:26 larrylap kernel: [<c014ef97>] kswapd+0x287/0x420
Nov 24 02:13:26 larrylap kernel: [<c012c68b>] kthread+0xdb/0xe0
Nov 24 02:13:26 larrylap kernel: [<c0103373>] kernel_thread_helper+0x7/0x14
Nov 24 02:13:26 larrylap kernel: [<ffffffff>] 0xffffffff
Nov 24 02:13:26 larrylap kernel:
Nov 24 02:13:26 larrylap kernel: -> #0 (iprune_mutex){--..}:
Nov 24 02:13:26 larrylap kernel: [<c0133706>] print_circular_bug_tail+0x46/0x90
Nov 24 02:13:26 larrylap kernel: [<c0135969>] __lock_acquire+0x929/0xcd0
Nov 24 02:13:26 larrylap kernel: [<c0136092>] lock_acquire+0x62/0x80
Nov 24 02:13:26 larrylap kernel: [<c032545f>] __mutex_lock_slowpath+0x7f/0x280
Nov 24 02:13:26 larrylap kernel: [<c0325689>] mutex_lock+0x29/0x30
Nov 24 02:13:26 larrylap kernel: [<c0178c61>] shrink_icache_memory+0x61/0x220
Nov 24 02:13:26 larrylap kernel: [<c014deb2>] shrink_slab+0x122/0x1a0
Nov 24 02:13:26 larrylap kernel: [<c014f5c6>] try_to_free_pages+0x146/0x230
Nov 24 02:13:26 larrylap kernel: [<c014904a>] __alloc_pages+0x13a/0x340
Nov 24 02:13:26 larrylap kernel: [<c0144cb8>] read_cache_page+0x78/0x180
Nov 24 02:13:26 larrylap kernel: [<e583b157>] map_mft_record+0xb7/0x260 [ntfs]
Nov 24 02:13:26 larrylap kernel: [<e5838ea9>] ntfs_read_locked_inode+0x59/0x1580 [ntfs]
Nov 24 02:13:26 larrylap kernel: [<e583b026>] ntfs_iget+0x66/0x90 [ntfs]
Nov 24 02:13:26 larrylap kernel: [<e583bbc1>] ntfs_lookup+0x101/0x5e0 [ntfs]
Nov 24 02:13:26 larrylap kernel: [<c016d184>] do_lookup+0x144/0x190
Nov 24 02:13:26 larrylap kernel: [<c016da26>] __link_path_walk+0x856/0xe00
Nov 24 02:13:26 larrylap kernel: [<c016e01e>] link_path_walk+0x4e/0xe0
Nov 24 02:13:26 larrylap kernel: [<c016e3ec>] do_path_lookup+0x8c/0x1d0
Nov 24 02:13:26 larrylap kernel: [<c016eb89>] __user_walk_fd+0x39/0x60
Nov 24 02:13:26 larrylap kernel: [<c016799f>] vfs_lstat_fd+0x1f/0x60
Nov 24 02:13:26 larrylap kernel: [<c0167a00>] vfs_lstat+0x20/0x30
Nov 24 02:13:26 larrylap kernel: [<c01682c9>] sys_lstat64+0x19/0x30
Nov 24 02:13:26 larrylap kernel: [<c0102fb2>] sysenter_past_esp+0x5f/0x99
Nov 24 02:13:26 larrylap kernel: [<b7f67410>] 0xb7f67410
Nov 24 02:13:26 larrylap kernel: [<ffffffff>] 0xffffffff
Nov 24 02:13:26 larrylap kernel:
Nov 24 02:13:26 larrylap kernel: other info that might help us debug this:
Nov 24 02:13:26 larrylap kernel:
Nov 24 02:13:26 larrylap kernel: 3 locks held by find/32325:
Nov 24 02:13:26 larrylap kernel: #0: (&inode->i_mutex){--..}, at: [<c0325689>] mutex_lock+0x29/0x30
Nov 24 02:13:26 larrylap kernel: #1: (&ni->mrec_lock){--..}, at: [<c0325689>] mutex_lock+0x29/0x30
Nov 24 02:13:26 larrylap kernel: #2: (shrinker_rwsem){----}, at: [<c014ddb2>] shrink_slab+0x22/0x1a0
Nov 24 02:13:26 larrylap kernel:
Nov 24 02:13:26 larrylap kernel: stack backtrace:
Nov 24 02:13:26 larrylap kernel: [<c01039d0>] dump_trace+0x210/0x220
Nov 24 02:13:26 larrylap kernel: [<c0103a06>] show_trace_log_lvl+0x26/0x40
Nov 24 02:13:26 larrylap kernel: [<c0103dfb>] show_trace+0x1b/0x20
Nov 24 02:13:27 larrylap kernel: [<c0103e24>] dump_stack+0x24/0x30
Nov 24 02:13:27 larrylap kernel: [<c0133741>] print_circular_bug_tail+0x81/0x90
Nov 24 02:13:27 larrylap kernel: [<c0135969>] __lock_acquire+0x929/0xcd0
Nov 24 02:13:27 larrylap kernel: [<c0136092>] lock_acquire+0x62/0x80
Nov 24 02:13:27 larrylap kernel: [<c032545f>] __mutex_lock_slowpath+0x7f/0x280
Nov 24 02:13:27 larrylap kernel: [<c0325689>] mutex_lock+0x29/0x30
Nov 24 02:13:27 larrylap kernel: [<c0178c61>] shrink_icache_memory+0x61/0x220
Nov 24 02:13:27 larrylap kernel: [<c014deb2>] shrink_slab+0x122/0x1a0
Nov 24 02:13:27 larrylap kernel: [<c014f5c6>] try_to_free_pages+0x146/0x230
Nov 24 02:13:27 larrylap kernel: [<c014904a>] __alloc_pages+0x13a/0x340
Nov 24 02:13:27 larrylap kernel: [<c0144cb8>] read_cache_page+0x78/0x180
Nov 24 02:13:27 larrylap kernel: [<e583b157>] map_mft_record+0xb7/0x260 [ntfs]
Nov 24 02:13:27 larrylap kernel: [<e5838ea9>] ntfs_read_locked_inode+0x59/0x1580 [ntfs]
Nov 24 02:13:27 larrylap kernel: [<e583b026>] ntfs_iget+0x66/0x90 [ntfs]
Nov 24 02:13:27 larrylap kernel: [<e583bbc1>] ntfs_lookup+0x101/0x5e0 [ntfs]
Nov 24 02:13:27 larrylap kernel: [<c016d184>] do_lookup+0x144/0x190
Nov 24 02:13:27 larrylap kernel: [<c016da26>] __link_path_walk+0x856/0xe00
Nov 24 02:13:27 larrylap kernel: [<c016e01e>] link_path_walk+0x4e/0xe0
Nov 24 02:13:27 larrylap kernel: [<c016e3ec>] do_path_lookup+0x8c/0x1d0
Nov 24 02:13:27 larrylap kernel: [<c016eb89>] __user_walk_fd+0x39/0x60
Nov 24 02:13:27 larrylap kernel: [<c016799f>] vfs_lstat_fd+0x1f/0x60
Nov 24 02:13:27 larrylap kernel: [<c0167a00>] vfs_lstat+0x20/0x30
Nov 24 02:13:27 larrylap kernel: [<c01682c9>] sys_lstat64+0x19/0x30
Nov 24 02:13:27 larrylap kernel: [<c0102fb2>] sysenter_past_esp+0x5f/0x99
Nov 24 02:13:27 larrylap kernel: [<b7f67410>] 0xb7f67410
Nov 24 02:13:27 larrylap kernel: =======================
next reply other threads:[~2006-11-24 16:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-24 16:17 Larry Finger [this message]
[not found] ` <3888a5cd0612081658r3980471byf4e502ec756073d8@mail.gmail.com>
2006-12-09 1:05 ` Possible circular locking in ntfs on 2.6.19-rc5-mm2 (now 2.6.19-rc6-mm2) Jiri Slaby
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=45671B11.5010801@lwfinger.net \
--to=larry.finger@lwfinger.net \
--cc=aia21@cantab.net \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.