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Message-ID: <20111007121410.53948c42@notabene.brown>
Date: Fri, 7 Oct 2011 12:14:10 +1100
From: NeilBrown <neilb@...e.de>
To: Валерий <paramonov@...sia.ru>
Cc: linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
axboe@...nel.dk, duaneg@...da.com
Subject: Re: BUG: spinlock lockup while performing FS operations
On Thu, 06 Oct 2011 19:50:29 +0700 Валерий <paramonov@...sia.ru> wrote:
> Hi!
>
> Faced with this problem. There are RAID5, assembled by mdadm (/dev/md127),
> which is divided into 2 partitions (md127p1 and md127p2). In both reiserfs. The
> second partition is exported via NFS. Everything works, the array is intact and
> fully synchronized. SMART says disks are healthy. But when copy too many files
> all hangs and saves only the reset. After a reset of course runs fsck, and then
> synchronize the array.
>
> I have a brand new computer. Sleaze is not set. Motherboard gigabyte 870-UD3,
> Power Supply FSP 700W, memory 16Gb Kingston, CPU Phenom II X6 1090T.
>
> I reported an error on bugs.gentoo.org: https://bugs.gentoo.org/show_bug.cgi?id=385047
> Was compiling a custom kernel with support for debugging and debug messages are received.
> Duane Griffin then sent me upstream.
>
> Now I have have BUG spinlock lockup on screen:
>
> Nov 26 13:34:46 localhost kernel: BUG: spinlock lockup on CPU#2, mc/7609, ffff880419c37200
> Oct 4 15:55:50 localhost kernel: BUG: spinlock lockup on CPU#3, flush-9:127/2391, ffff880419c37200
Nov 26 ???
Why are there dates from last year in the middle of you log? Have you
edited the log at all, or joined different bits together??
Please make sure that you provide complete logs, including where possible a
few lines before and after the bit that you think is important.
If the clock is really jumping around, then maybe that is confusing some
timing for the measuring of whether a task has 'hung' or not.
Can you get a complete trace without any sudden changes in the system time?
NeilBrown
>
> Full log from /var/log/messages:
>
> Oct 4 15:53:09 localhost kernel: INFO: rcu_preempt_state detected stalls on CPUs/tasks: { 0 2} (detected by 5, t=60028 jiffies)
> Oct 4 15:53:15 localhost kernel: INFO: rcu_bh_state detected stalls on CPUs/tasks: { 0 2 3} (detected by 5, t=60025 jiffies)
> Oct 4 15:55:25 localhost kernel: INFO: task sync_supers:151 blocked for more than 120 seconds.
> Oct 4 15:55:25 localhost kernel: "echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Oct 4 15:55:25 localhost kernel: sync_supers D 0000000000000000 0 151 2 0x00000000
> Oct 4 15:55:25 localhost kernel: ffff88042dba5740 0000000000000046 ffffffff81493e95 0000000000000008
> Oct 4 15:55:25 localhost kernel: ffff88042dba8000 00000000000001ec 0000000000010b40 ffff88042dba8000
> Oct 4 15:55:25 localhost kernel: 0000000000010b40 ffff88042dba5fd8 ffff88042dba4000 0000000000004000
> Oct 4 15:55:25 localhost kernel: Call Trace:
> Oct 4 15:55:25 localhost kernel: [<ffffffff81493e95>] ? schedule+0x695/0xa10
> Oct 4 15:55:25 localhost kernel: [<ffffffff8107b462>] ? mark_held_locks+0x72/0xa0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8103fa41>] ? get_parent_ip+0x11/0x50
> Oct 4 15:55:25 localhost kernel: [<ffffffff8138de22>] get_active_stripe+0x312/0x6f0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8103e7f0>] ? try_to_wake_up+0x2d0/0x2d0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81391bb8>] make_request+0x1a8/0x720
> Oct 4 15:55:25 localhost kernel: [<ffffffff81064430>] ? wake_up_bit+0x40/0x40
> Oct 4 15:55:25 localhost kernel: [<ffffffff8139c6be>] md_make_request+0x16e/0x2f0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8139c5a8>] ? md_make_request+0x58/0x2f0
> Oct 4 15:55:25 localhost kernel: [<ffffffff810fcbb3>] ? kmem_cache_alloc+0x33/0xc0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81242dac>] generic_make_request+0x14c/0x2f0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81242fb1>] submit_bio+0x61/0xd0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81131e26>] submit_bh+0xe6/0x120
> Oct 4 15:55:25 localhost kernel: [<ffffffff81192c8b>] write_ordered_chunk+0x5b/0x90
> Oct 4 15:55:25 localhost kernel: [<ffffffff81192bfc>] add_to_chunk+0x4c/0x80
> Oct 4 15:55:25 localhost kernel: [<ffffffff81192c30>] ? add_to_chunk+0x80/0x80
> Oct 4 15:55:25 localhost kernel: [<ffffffff8119407d>] write_ordered_buffers.clone.31+0x8d/0x2a0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8107b60d>] ? trace_hardirqs_on+0xd/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff8119444f>] flush_commit_list+0x1bf/0x6e0
> Oct 4 15:55:25 localhost kernel: [<ffffffff811984d4>] do_journal_end.clone.34+0xdb4/0xf20
> Oct 4 15:55:25 localhost kernel: [<ffffffff810d4b90>] ? bdi_sched_wait+0x10/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff81198f54>] journal_end_sync+0x64/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff81186178>] reiserfs_sync_fs+0x58/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff8149608f>] ? down_read+0x2f/0x50
> Oct 4 15:55:25 localhost kernel: [<ffffffff8118619e>] reiserfs_write_super+0xe/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff81109cca>] sync_supers+0xfa/0x100
> Oct 4 15:55:25 localhost kernel: [<ffffffff810d4bd1>] bdi_sync_supers+0x41/0x60
> Oct 4 15:55:25 localhost kernel: [<ffffffff810d4b90>] ? bdi_sched_wait+0x10/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063f36>] kthread+0x96/0xa0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499194>] kernel_thread_helper+0x4/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff810368b0>] ? finish_task_switch+0x80/0x110
> Oct 4 15:55:25 localhost kernel: [<ffffffff814978c4>] ? retint_restore_args+0xe/0xe
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063ea0>] ? __init_kthread_worker+0x70/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499190>] ? gs_change+0xb/0xb
> Oct 4 15:55:25 localhost kernel: 2 locks held by sync_supers/151:
> Oct 4 15:55:25 localhost kernel: #0: (&type->s_umount_key#18){+++++.}, at: [<ffffffff81109c53>] sync_supers+0x83/0x100
> Oct 4 15:55:25 localhost kernel: #1: (&jl->j_commit_mutex){+.+...}, at: [<ffffffff811943c8>] flush_commit_list+0x138/0x6e0
> Oct 4 15:55:25 localhost kernel: INFO: task md127_resync:3773 blocked for more than 120 seconds.
> Oct 4 15:55:25 localhost kernel: "echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Oct 4 15:55:25 localhost kernel: md127_resync D 0000000000000000 0 3773 2 0x00000000
> Oct 4 15:55:25 localhost kernel: ffff88041880fbb0 0000000000000046 ffffffff81493e95 0000000000000000
> Oct 4 15:55:25 localhost kernel: 0000000000000000 ffff88041822e158 0000000000010b40 ffff88042d935b20
> Oct 4 15:55:25 localhost kernel: 0000000000010b40 ffff88041880ffd8 ffff88041880e000 0000000000004000
> Oct 4 15:55:25 localhost kernel: Call Trace:
> Oct 4 15:55:25 localhost kernel: [<ffffffff81493e95>] ? schedule+0x695/0xa10
> Oct 4 15:55:25 localhost kernel: [<ffffffff8103fa41>] ? get_parent_ip+0x11/0x50
> Oct 4 15:55:25 localhost kernel: [<ffffffff81494742>] schedule_timeout+0x152/0x220
> Oct 4 15:55:25 localhost kernel: [<ffffffff81053490>] ? run_timer_softirq+0x2c0/0x2c0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81494829>] schedule_timeout_uninterruptible+0x19/0x20
> Oct 4 15:55:25 localhost kernel: [<ffffffff81053d58>] msleep+0x18/0x20
> Oct 4 15:55:25 localhost kernel: [<ffffffff8139dc7c>] md_do_sync+0x93c/0xd60
> Oct 4 15:55:25 localhost kernel: [<ffffffff8149743b>] ? _raw_spin_unlock_irq+0x2b/0x60
> Oct 4 15:55:25 localhost kernel: [<ffffffff81064430>] ? wake_up_bit+0x40/0x40
> Oct 4 15:55:25 localhost kernel: [<ffffffff81054676>] ? recalc_sigpending+0x16/0x40
> Oct 4 15:55:25 localhost kernel: [<ffffffff8139e3e6>] md_thread+0x116/0x150
> Oct 4 15:55:25 localhost kernel: [<ffffffff814974ad>] ? _raw_spin_unlock_irqrestore+0x3d/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff8139e2d0>] ? md_register_thread+0x110/0x110
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063f36>] kthread+0x96/0xa0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499194>] kernel_thread_helper+0x4/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff810368b0>] ? finish_task_switch+0x80/0x110
> Oct 4 15:55:25 localhost kernel: [<ffffffff814978c4>] ? retint_restore_args+0xe/0xe
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063ea0>] ? __init_kthread_worker+0x70/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499190>] ? gs_change+0xb/0xb
> Oct 4 15:55:25 localhost kernel: no locks held by md127_resync/3773.
> Oct 4 15:55:25 localhost kernel: INFO: task mc:7609 blocked for more than 120 seconds.
> Oct 4 15:55:25 localhost kernel: "echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Oct 4 15:55:25 localhost kernel: mc D 00000000000213da 0 7609 7603 0x00000000
> Oct 4 15:55:25 localhost kernel: 0000000091827364 ffff880418bb9af0 ffff880418bb9af0 ffff880418bb9b00
> Oct 4 15:55:25 localhost kernel: ffff880418bb9b00 ffffffff00000000 0000000000000087 0000000000521e7f
> Oct 4 15:55:25 localhost kernel: 00000000000000ca 00000000000000cb 0000000000000133 ffff880418bb9bd8
> Oct 4 15:55:25 localhost kernel: Call Trace:
> Oct 4 15:55:25 localhost kernel: [<ffffffff8117b5a8>] ? reiserfs_readpages+0x18/0x20
> Oct 4 15:55:25 localhost kernel: [<ffffffff810c75ad>] ? __do_page_cache_readahead+0x20d/0x2c0
> Oct 4 15:55:25 localhost kernel: [<ffffffff810c7455>] ? __do_page_cache_readahead+0xb5/0x2c0
> Oct 4 15:55:25 localhost kernel: [<ffffffff812cc920>] ? fbcon_decor_cursor+0x150/0x1e0
> Oct 4 15:55:25 localhost kernel: [<ffffffff810c798c>] ? ra_submit+0x1c/0x20
> Oct 4 15:55:25 localhost kernel: [<ffffffff810c7a96>] ? ondemand_readahead+0x106/0x2b0
> Oct 4 15:55:25 localhost kernel: [<ffffffff810c7d0c>] ? page_cache_sync_readahead+0x2c/0x40
> Oct 4 15:55:25 localhost kernel: [<ffffffff810be8d8>] ? generic_file_aio_read+0x428/0x770
> Oct 4 15:55:25 localhost kernel: [<ffffffff811064c2>] ? do_sync_read+0xd2/0x110
> Oct 4 15:55:25 localhost kernel: [<ffffffff8123266c>] ? security_file_permission+0x8c/0xa0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81106c33>] ? vfs_read+0xc3/0x170
> Oct 4 15:55:25 localhost kernel: [<ffffffff81106d2c>] ? sys_read+0x4c/0x90
> Oct 4 15:55:25 localhost kernel: [<ffffffff8149803b>] ? system_call_fastpath+0x16/0x1b
> Oct 4 15:55:25 localhost kernel: 1 lock held by mc/7609:
> Oct 4 15:55:25 localhost kernel: #0: (&(&conf->device_lock)->rlock){..-...}, at: [<ffffffff8138c862>] release_stripe+0x32/0x60
> Oct 4 15:55:25 localhost kernel: INFO: task kworker/1:2:7644 blocked for more than 120 seconds.
> Oct 4 15:55:25 localhost kernel: "echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Oct 4 15:55:25 localhost kernel: kworker/1:2 D 0000000000000000 0 7644 2 0x00000000
> Oct 4 15:55:25 localhost kernel: ffff88041b761c50 0000000000000046 ffffffff81493e95 0000000000000002
> Oct 4 15:55:25 localhost kernel: ffff88041b761c10 0000000000000046 0000000000010b40 ffff88041b57ad90
> Oct 4 15:55:25 localhost kernel: 0000000000010b40 ffff88041b761fd8 ffff88041b760000 0000000000004000
> Oct 4 15:55:25 localhost kernel: Call Trace:
> Oct 4 15:55:25 localhost kernel: [<ffffffff81493e95>] ? schedule+0x695/0xa10
> Oct 4 15:55:25 localhost kernel: [<ffffffff8103d861>] ? load_balance+0xd1/0x830
> Oct 4 15:55:25 localhost kernel: [<ffffffff8107b462>] ? mark_held_locks+0x72/0xa0
> Oct 4 15:55:25 localhost kernel: [<ffffffff814959d7>] mutex_lock_nested+0x167/0x380
> Oct 4 15:55:25 localhost kernel: [<ffffffff811943c8>] ? flush_commit_list+0x138/0x6e0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8107b5bd>] ? trace_hardirqs_on_caller+0x12d/0x170
> Oct 4 15:55:25 localhost kernel: [<ffffffff811943c8>] flush_commit_list+0x138/0x6e0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8119532a>] flush_async_commits+0x5a/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff8105cdcb>] process_one_work+0x18b/0x440
> Oct 4 15:55:25 localhost kernel: [<ffffffff8105cd6a>] ? process_one_work+0x12a/0x440
> Oct 4 15:55:25 localhost kernel: [<ffffffff811952d0>] ? get_list_bitmap+0xc0/0xc0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8105f062>] worker_thread+0x162/0x340
> Oct 4 15:55:25 localhost kernel: [<ffffffff8105ef00>] ? manage_workers.clone.25+0x230/0x230
> Oct 4 15:55:25 localhost kernel: [<ffffffff8105ef00>] ? manage_workers.clone.25+0x230/0x230
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063f36>] kthread+0x96/0xa0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499194>] kernel_thread_helper+0x4/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff810368b0>] ? finish_task_switch+0x80/0x110
> Oct 4 15:55:25 localhost kernel: [<ffffffff814978c4>] ? retint_restore_args+0xe/0xe
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063ea0>] ? __init_kthread_worker+0x70/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499190>] ? gs_change+0xb/0xb
> Oct 4 15:55:25 localhost kernel: 3 locks held by kworker/1:2/7644:
> Oct 4 15:55:25 localhost kernel: #0: (reiserfs){.+.+..}, at: [<ffffffff8105cd6a>] process_one_work+0x12a/0x440
> Oct 4 15:55:25 localhost kernel: #1: ((&(&journal->j_work)->work)){+.+...}, at: [<ffffffff8105cd6a>] process_one_work+0x12a/0x440
> Oct 4 15:55:25 localhost kernel: #2: (&jl->j_commit_mutex){+.+...}, at: [<ffffffff811943c8>] flush_commit_list+0x138/0x6e0
> Oct 4 15:55:25 localhost kernel: INFO: task flush-9:127:2391 blocked for more than 120 seconds.
> Oct 4 15:55:25 localhost kernel: "echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Oct 4 15:55:25 localhost kernel: flush-9:127 D ffffffff8112b988 0 2391 2 0x00000000
> Oct 4 15:55:25 localhost kernel: 0000000000000000 ffffffff81897e00 ffff8804184bd808 ffff880419c2c980
> Oct 4 15:55:25 localhost kernel: ffff88040367fc80 ffff88042f019800 ffff880419c2c8e0 ffff880419c2c970
> Oct 4 15:55:25 localhost kernel: ffff88040367fd00 ffff88042f019868 ffff88040367fcd0 ffffffff8112c4b3
> Oct 4 15:55:25 localhost kernel: Call Trace:
> Oct 4 15:55:25 localhost kernel: [<ffffffff8112c4b3>] ? writeback_inodes_wb+0x83/0x180
> Oct 4 15:55:25 localhost kernel: [<ffffffff8112c86b>] ? wb_writeback+0x2bb/0x330
> Oct 4 15:55:25 localhost kernel: [<ffffffff8103fb15>] ? sub_preempt_count+0x95/0xd0
> Oct 4 15:55:25 localhost kernel: [<ffffffff8112cb20>] ? wb_do_writeback+0x240/0x250
> Oct 4 15:55:25 localhost kernel: [<ffffffff8112cbc2>] ? bdi_writeback_thread+0x92/0x180
> Oct 4 15:55:25 localhost kernel: [<ffffffff8112cb30>] ? wb_do_writeback+0x250/0x250
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063f36>] ? kthread+0x96/0xa0
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499194>] ? kernel_thread_helper+0x4/0x10
> Oct 4 15:55:25 localhost kernel: [<ffffffff810368b0>] ? finish_task_switch+0x80/0x110
> Oct 4 15:55:25 localhost kernel: [<ffffffff814978c4>] ? retint_restore_args+0xe/0xe
> Oct 4 15:55:25 localhost kernel: [<ffffffff81063ea0>] ? __init_kthread_worker+0x70/0x70
> Oct 4 15:55:25 localhost kernel: [<ffffffff81499190>] ? gs_change+0xb/0xb
> Oct 4 15:55:25 localhost kernel: 2 locks held by flush-9:127/2391:
> Oct 4 15:55:25 localhost kernel: #0: (&type->s_umount_key#24){.+.+..}, at: [<ffffffff8112c52c>] writeback_inodes_wb+0xfc/0x180
> Oct 4 15:55:25 localhost kernel: #1: (&(&conf->device_lock)->rlock){..-...}, at: [<ffffffff8138db45>] get_active_stripe+0x35/0x6f0
> Nov 26 13:34:46 localhost -- MARK --
> Nov 26 13:34:46 localhost kernel: BUG: spinlock lockup on CPU#2, mc/7609, ffff880419c37200
> Nov 26 13:34:46 localhost kernel: Pid: 7609, comm: mc Tainted: G W 3.0.4-gentoo-r1 #7
> Nov 26 13:34:46 localhost kernel: Call Trace:
> Nov 26 13:34:46 localhost kernel:<IRQ> [<ffffffff81267866>] do_raw_spin_lock+0x156/0x170
> Nov 26 13:34:46 localhost kernel: [<ffffffff81496cc9>] _raw_spin_lock_irqsave+0x49/0x60
> Nov 26 13:34:46 localhost kernel: [<ffffffff8138c862>] ? release_stripe+0x32/0x60
> Nov 26 13:34:46 localhost kernel: [<ffffffff814974ad>] ? _raw_spin_unlock_irqrestore+0x3d/0x70
> Nov 26 13:34:46 localhost kernel: [<ffffffff8138c862>] release_stripe+0x32/0x60
> Nov 26 13:34:46 localhost kernel: [<ffffffff8138e80f>] raid5_end_write_request+0xcf/0x120
> Nov 26 13:34:46 localhost kernel: [<ffffffff81136318>] bio_endio+0x18/0x30
> Nov 26 13:34:46 localhost syslog-ng[6446]: Log statistics; processed='center(received)=0', processed='center(queued)=0', processed='source(src)=999', processed='destination(console_all)=999', processed='destination(messages)=999', processed='global(payload_reallocs)=0', processed='global(sdata_updates)=0', processed='src.internal(src#1)=2', stamp='src.internal(src#1)=2584593286', processed='global(msg_clones)=0'
> Nov 26 13:36:43 localhost kernel: [<ffffffff812444fb>] req_bio_endio.clone.39+0x8b/0xd0
> Nov 26 13:36:43 localhost kernel: [<ffffffff81244633>] blk_update_request+0xf3/0x500
> Nov 26 13:36:43 localhost kernel: [<ffffffff81244869>] ? blk_update_request+0x329/0x500
> Nov 26 13:36:43 localhost kernel: [<ffffffff8132f765>] ? ata_scsi_qc_complete+0x65/0x460
> Nov 26 13:36:43 localhost kernel: [<ffffffff81244a6f>] blk_update_bidi_request+0x2f/0x90
> Nov 26 13:36:43 localhost kernel: [<ffffffff81244c3a>] blk_end_bidi_request+0x2a/0x80
> Nov 26 13:36:43 localhost kernel: [<ffffffff81244ccb>] blk_end_request+0xb/0x10
> Nov 26 13:36:43 localhost kernel: [<ffffffff81319ab7>] scsi_io_completion+0x97/0x5d0
> Nov 26 13:36:43 localhost kernel: [<ffffffff813124c2>] scsi_finish_command+0xb2/0xe0
> Nov 26 13:36:43 localhost kernel: [<ffffffff813198ad>] scsi_softirq_done+0x9d/0x130
> Oct 4 15:55:50 localhost kernel: [<ffffffff81249b4d>] blk_done_softirq+0x7d/0x90
> Oct 4 15:55:50 localhost kernel: [<ffffffff8104cbf8>] __do_softirq+0xa8/0x140
> Oct 4 15:55:50 localhost kernel: [<ffffffff8149928c>] call_softirq+0x1c/0x30
> Oct 4 15:55:50 localhost kernel: [<ffffffff810047b5>] do_softirq+0x85/0xc0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8104cf9e>] irq_exit+0x9e/0xc0
> Oct 4 15:55:50 localhost kernel: [<ffffffff810043d1>] do_IRQ+0x61/0xd0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81497813>] common_interrupt+0x13/0x13
> Oct 4 15:55:50 localhost kernel:<EOI> [<ffffffff81497441>] ? _raw_spin_unlock_irq+0x31/0x60
> Oct 4 15:55:50 localhost kernel: [<ffffffff8149743b>] ? _raw_spin_unlock_irq+0x2b/0x60
> Oct 4 15:55:50 localhost kernel: [<ffffffff8131958e>] scsi_request_fn+0x34e/0x400
> Oct 4 15:55:50 localhost kernel: [<ffffffff812424a9>] __blk_run_queue+0x19/0x20
> Oct 4 15:55:50 localhost kernel: [<ffffffff812537b5>] cfq_insert_request+0x345/0x4d0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81241a56>] __elv_add_request+0x126/0x1e0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81245880>] blk_flush_plug_list+0x1b0/0x200
> Oct 4 15:55:50 localhost kernel: [<ffffffff81493c32>] schedule+0x432/0xa10
> Oct 4 15:55:50 localhost kernel: [<ffffffff8103fa41>] ? get_parent_ip+0x11/0x50
> Oct 4 15:55:50 localhost kernel: [<ffffffff8103fb15>] ? sub_preempt_count+0x95/0xd0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8138de22>] get_active_stripe+0x312/0x6f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8103e7f0>] ? try_to_wake_up+0x2d0/0x2d0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81391bb8>] make_request+0x1a8/0x720
> Oct 4 15:55:50 localhost kernel: [<ffffffff81064430>] ? wake_up_bit+0x40/0x40
> Oct 4 15:55:50 localhost kernel: [<ffffffff8139c6be>] md_make_request+0x16e/0x2f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8139c5a8>] ? md_make_request+0x58/0x2f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81242dac>] generic_make_request+0x14c/0x2f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8113741a>] ? bvec_alloc_bs+0x6a/0x100
> Oct 4 15:55:50 localhost kernel: [<ffffffff81242fb1>] submit_bio+0x61/0xd0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8113c3f7>] do_mpage_readpage+0x317/0x650
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c8c46>] ? __lru_cache_add+0x76/0xc0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8113c89c>] mpage_readpages+0xfc/0x150
> Oct 4 15:55:50 localhost kernel: [<ffffffff8117d7a0>] ? restart_transaction+0xb0/0xb0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8117d7a0>] ? restart_transaction+0xb0/0xb0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8117b5a8>] reiserfs_readpages+0x18/0x20
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c75ad>] __do_page_cache_readahead+0x20d/0x2c0
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c7455>] ? __do_page_cache_readahead+0xb5/0x2c0
> Oct 4 15:55:50 localhost kernel: [<ffffffff812cc920>] ? fbcon_decor_cursor+0x150/0x1e0
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c798c>] ra_submit+0x1c/0x20
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c7a96>] ondemand_readahead+0x106/0x2b0
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c7d0c>] page_cache_sync_readahead+0x2c/0x40
> Oct 4 15:55:50 localhost kernel: [<ffffffff810be8d8>] generic_file_aio_read+0x428/0x770
> Oct 4 15:55:50 localhost kernel: [<ffffffff811064c2>] do_sync_read+0xd2/0x110
> Oct 4 15:55:50 localhost kernel: [<ffffffff8123266c>] ? security_file_permission+0x8c/0xa0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81106c33>] vfs_read+0xc3/0x170
> Oct 4 15:55:50 localhost kernel: [<ffffffff81106d2c>] sys_read+0x4c/0x90
> Oct 4 15:55:50 localhost kernel: [<ffffffff8149803b>] system_call_fastpath+0x16/0x1b
> Oct 4 15:55:50 localhost kernel: BUG: spinlock lockup on CPU#3, flush-9:127/2391, ffff880419c37200
> Oct 4 15:55:50 localhost kernel: Pid: 2391, comm: flush-9:127 Tainted: G W 3.0.4-gentoo-r1 #7
> Oct 4 15:55:50 localhost kernel: Call Trace:
> Oct 4 15:55:50 localhost kernel: [<ffffffff81267866>] do_raw_spin_lock+0x156/0x170
> Oct 4 15:55:50 localhost kernel: [<ffffffff81496c74>] _raw_spin_lock_irq+0x44/0x50
> Oct 4 15:55:50 localhost kernel: [<ffffffff8138db45>] ? get_active_stripe+0x35/0x6f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8138db45>] get_active_stripe+0x35/0x6f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8107b462>] ? mark_held_locks+0x72/0xa0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8103fa41>] ? get_parent_ip+0x11/0x50
> Oct 4 15:55:50 localhost kernel: [<ffffffff8103fb15>] ? sub_preempt_count+0x95/0xd0
> Oct 4 15:55:50 localhost kernel: [<ffffffff814974ad>] ? _raw_spin_unlock_irqrestore+0x3d/0x70
> Oct 4 15:55:50 localhost kernel: [<ffffffff810646cb>] ? prepare_to_wait+0x5b/0x90
> Oct 4 15:55:50 localhost kernel: [<ffffffff81391bb8>] make_request+0x1a8/0x720
> Oct 4 15:55:50 localhost kernel: [<ffffffff81064430>] ? wake_up_bit+0x40/0x40
> Oct 4 15:55:50 localhost kernel: [<ffffffff8139c6be>] md_make_request+0x16e/0x2f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8139c5a8>] ? md_make_request+0x58/0x2f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff810fcbb3>] ? kmem_cache_alloc+0x33/0xc0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81242dac>] generic_make_request+0x14c/0x2f0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81242fb1>] submit_bio+0x61/0xd0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81131e26>] submit_bh+0xe6/0x120
> Oct 4 15:55:50 localhost kernel: [<ffffffff811352c7>] __block_write_full_page+0x1f7/0x370
> Oct 4 15:55:50 localhost kernel: [<ffffffff81133db0>] ? block_read_full_page+0x3b0/0x3b0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81138040>] ? I_BDEV+0x10/0x10
> Oct 4 15:55:50 localhost kernel: [<ffffffff81138040>] ? I_BDEV+0x10/0x10
> Oct 4 15:55:50 localhost kernel: [<ffffffff8113552e>] block_write_full_page_endio+0xee/0x130
> Oct 4 15:55:50 localhost kernel: [<ffffffff8107b462>] ? mark_held_locks+0x72/0xa0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81135580>] block_write_full_page+0x10/0x20
> Oct 4 15:55:50 localhost kernel: [<ffffffff81138ef3>] blkdev_writepage+0x13/0x20
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c5925>] __writepage+0x15/0x50
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c60a1>] write_cache_pages+0x1f1/0x420
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c5910>] ? set_page_dirty+0x70/0x70
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c6318>] generic_writepages+0x48/0x60
> Oct 4 15:55:50 localhost kernel: [<ffffffff810c71ff>] do_writepages+0x1f/0x40
> Oct 4 15:55:50 localhost kernel: [<ffffffff8112b5a9>] writeback_single_inode+0xf9/0x260
> Oct 4 15:55:50 localhost kernel: [<ffffffff8112b988>] writeback_sb_inodes+0xe8/0x1c0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8112c4b3>] writeback_inodes_wb+0x83/0x180
> Oct 4 15:55:50 localhost kernel: [<ffffffff8112c86b>] wb_writeback+0x2bb/0x330
> Oct 4 15:55:50 localhost kernel: [<ffffffff8103fb15>] ? sub_preempt_count+0x95/0xd0
> Oct 4 15:55:50 localhost kernel: [<ffffffff8112cb20>] wb_do_writeback+0x240/0x250
> Oct 4 15:55:50 localhost kernel: [<ffffffff8112cbc2>] bdi_writeback_thread+0x92/0x180
> Oct 4 15:55:50 localhost kernel: [<ffffffff8112cb30>] ? wb_do_writeback+0x250/0x250
> Oct 4 15:55:50 localhost kernel: [<ffffffff81063f36>] kthread+0x96/0xa0
> Oct 4 15:55:50 localhost kernel: [<ffffffff81499194>] kernel_thread_helper+0x4/0x10
> Oct 4 15:55:50 localhost kernel: [<ffffffff810368b0>] ? finish_task_switch+0x80/0x110
> Oct 4 15:55:50 localhost kernel: [<ffffffff814978c4>] ? retint_restore_args+0xe/0xe
> Oct 4 15:55:50 localhost kernel: [<ffffffff81063ea0>] ? __init_kthread_worker+0x70/0x70
> Oct 4 15:55:50 localhost kernel: [<ffffffff81499190>] ? gs_change+0xb/0xb
>
> Why date a failure to report?What next?
> Thanks.
>
> ---
> ParamonovValery.
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