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To: linux-kernel@vger.kernel.org
From: Marcus Better <marcus@better.se>
Subject: NTFS: inconsistent lock state
Followup-To: gmane.linux.kernel
Date: Mon, 18 Jan 2010 13:10:34 +0100
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I got this a couple of times with 2.6.31.6 and 2.6.32.3, with a read-only NTFS partition.

Jan 17 18:08:57 better kernel: =================================
Jan 17 18:08:57 better kernel: [ INFO: inconsistent lock state ]
Jan 17 18:08:57 better kernel: 2.6.32.3-melech #4
Jan 17 18:08:57 better kernel: ---------------------------------
Jan 17 18:08:57 better kernel: inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage.
Jan 17 18:08:57 better kernel: kswapd0/294 [HC0[0]:SC0[0]:HE1:SE1] takes:
Jan 17 18:08:57 better kernel: (&rl->lock){++++?.}, at: [<ffffffffa0490939>] __ntfs_clear_inode+0x19/0x150 [ntfs]
Jan 17 18:08:57 better kernel: {RECLAIM_FS-ON-W} state was registered at:
Jan 17 18:08:57 better kernel:  [<ffffffff810812fc>] mark_held_locks+0x6c/0x90
Jan 17 18:08:57 better kernel:  [<ffffffff810813e5>] lockdep_trace_alloc+0xc5/0xd0
Jan 17 18:08:57 better kernel:  [<ffffffff810d9245>] __alloc_pages_nodemask+0x75/0x740
Jan 17 18:08:57 better kernel:  [<ffffffff810d2db6>] read_cache_page_async+0x56/0x190
Jan 17 18:08:57 better kernel:  [<ffffffff810d2efe>] read_cache_page+0xe/0x70
Jan 17 18:08:57 better kernel:  [<ffffffffa049424c>] map_mft_record+0x13c/0x220 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffffa0496dc1>] map_extent_mft_record+0xc1/0x2f0 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffffa0485844>] ntfs_attr_lookup+0x5e4/0x6a0 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffffa048752e>] ntfs_map_runlist_nolock+0x2fe/0x480 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffffa0487a32>] ntfs_map_runlist+0x52/0x80 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffffa0482ca2>] ntfs_readpage+0x882/0x910 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffff810d2de9>] read_cache_page_async+0x89/0x190
Jan 17 18:08:57 better kernel:  [<ffffffff810d2efe>] read_cache_page+0xe/0x70
Jan 17 18:08:57 better kernel:  [<ffffffffa048a858>] ntfs_lookup_inode_by_name+0x568/0xdd0 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffffa0498a48>] ntfs_lookup+0x68/0x510 [ntfs]
Jan 17 18:08:57 better kernel:  [<ffffffff81114d6e>] do_lookup+0x1fe/0x250
Jan 17 18:08:57 better kernel:  [<ffffffff8111759f>] __link_path_walk+0x73f/0x1040
Jan 17 18:08:57 better kernel:  [<ffffffff8111812e>] path_walk+0x6e/0xe0
Jan 17 18:08:57 better kernel:  [<ffffffff811181fb>] do_path_lookup+0x5b/0xa0
Jan 17 18:08:57 better kernel:  [<ffffffff81118e8b>] user_path_at+0x7b/0xb0
Jan 17 18:08:57 better kernel:  [<ffffffff8110f42c>] vfs_fstatat+0x3c/0x80
Jan 17 18:08:57 better kernel:  [<ffffffff8110f4d9>] vfs_lstat+0x19/0x20
Jan 17 18:08:57 better kernel:  [<ffffffff8110f4ff>] sys_newlstat+0x1f/0x50
Jan 17 18:08:57 better kernel:  [<ffffffff8100bf6b>] system_call_fastpath+0x16/0x1b
Jan 17 18:08:57 better kernel: irq event stamp: 186821
Jan 17 18:08:57 better kernel: hardirqs last  enabled at (186821): [<ffffffff810d8505>] free_hot_cold_page+0x295/0x310
Jan 17 18:08:57 better kernel: hardirqs last disabled at (186820): [<ffffffff810d837d>] free_hot_cold_page+0x10d/0x310
Jan 17 18:08:57 better kernel: softirqs last  enabled at (186222): [<ffffffff8105681c>] __do_softirq+0x20c/0x280
Jan 17 18:08:57 better kernel: softirqs last disabled at (186207): [<ffffffff8100d15c>] call_softirq+0x1c/0x30
Jan 17 18:08:57 better kernel:
Jan 17 18:08:57 better kernel: other info that might help us debug this:
Jan 17 18:08:57 better kernel: 2 locks held by kswapd0/294:
Jan 17 18:08:57 better kernel: #0:  (shrinker_rwsem){++++..}, at: [<ffffffff810e0132>] shrink_slab+0x32/0x1e0
Jan 17 18:08:57 better kernel: #1:  (iprune_sem){.+.+.-}, at: [<ffffffff811228c2>] shrink_icache_memory+0x82/0x2e0
Jan 17 18:08:57 better kernel:
Jan 17 18:08:57 better kernel: stack backtrace:
Jan 17 18:08:57 better kernel: Pid: 294, comm: kswapd0 Not tainted 2.6.32.3-melech #4
Jan 17 18:08:57 better kernel: Call Trace:
Jan 17 18:08:57 better kernel: [<ffffffff81080bdc>] print_usage_bug+0x18c/0x1e0
Jan 17 18:08:57 better kernel: [<ffffffff8108109d>] mark_lock+0x46d/0x660
Jan 17 18:08:57 better kernel: [<ffffffff81081cd0>] ? check_usage_forwards+0x0/0x100
Jan 17 18:08:57 better kernel: [<ffffffff81082f1a>] __lock_acquire+0x79a/0x1d10
Jan 17 18:08:57 better kernel: [<ffffffff810d864c>] ? __pagevec_free+0xcc/0x100
Jan 17 18:08:57 better kernel: [<ffffffff810d2440>] ? find_get_pages+0x0/0x170
Jan 17 18:08:57 better kernel: [<ffffffff810d256b>] ? find_get_pages+0x12b/0x170
Jan 17 18:08:57 better kernel: [<ffffffff81084592>] lock_acquire+0x102/0x140
Jan 17 18:08:57 better kernel: [<ffffffffa0490939>] ? __ntfs_clear_inode+0x19/0x150 [ntfs]
Jan 17 18:08:57 better kernel: [<ffffffff81397c6f>] down_write+0x3f/0x50
Jan 17 18:08:57 better kernel: [<ffffffffa0490939>] ? __ntfs_clear_inode+0x19/0x150 [ntfs]
Jan 17 18:08:57 better kernel: [<ffffffffa0490939>] __ntfs_clear_inode+0x19/0x150 [ntfs]
Jan 17 18:08:57 better kernel: [<ffffffffa0490b71>] ntfs_clear_big_inode+0x61/0x130 [ntfs]
Jan 17 18:08:57 better kernel: [<ffffffff8112242d>] clear_inode+0x8d/0x140
Jan 17 18:08:57 better kernel: [<ffffffff81122740>] dispose_list+0x30/0x130
Jan 17 18:08:57 better kernel: [<ffffffff81122aa8>] shrink_icache_memory+0x268/0x2e0
Jan 17 18:08:57 better kernel: [<ffffffff810e0232>] shrink_slab+0x132/0x1e0
Jan 17 18:08:57 better kernel: [<ffffffff810e0824>] kswapd+0x544/0x770
Jan 17 18:08:57 better kernel: [<ffffffff810dd990>] ? isolate_pages_global+0x0/0x230
Jan 17 18:08:57 better kernel: [<ffffffff8106dfb0>] ? autoremove_wake_function+0x0/0x40
Jan 17 18:08:57 better kernel: [<ffffffff810e02e0>] ? kswapd+0x0/0x770
Jan 17 18:08:57 better kernel: [<ffffffff8106dbe6>] kthread+0x96/0xa0
Jan 17 18:08:57 better kernel: [<ffffffff8100d05a>] child_rip+0xa/0x20
Jan 17 18:08:57 better kernel: [<ffffffff8100c9c0>] ? restore_args+0x0/0x30
Jan 17 18:08:57 better kernel: [<ffffffff8106db50>] ? kthread+0x0/0xa0
Jan 17 18:08:57 better kernel: [<ffffffff8100d050>] ? child_rip+0x0/0x20

Cheers,

Marcus
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