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Date: Thu, 17 Jun 2010 13:21:36 -0700 (PDT)
From: Sage Weil <sage@...dream.net>
To: Andrew Morton <akpm@...ux-foundation.org>,
Alexey Dobriyan <adobriyan@...il.com>,
Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
hch@....de, bfields@...i.umich.edu
Subject: weird umem vs nfsd regression
Hi,
I started seeing a hang during bootup of a machine with a umem
(micromemory nvram) card. I bisected it and narrowed it down to commit
b95a5680 which merged a couple nfsd changes, although strangely reverting
just b160fdab ('nfsd: nfsd_setattr needs to call commit_metadata') is
sufficient to make the problem go away.
I'm not quite sure what to make of it. I don't see how the nfsd change
would affect the umem driver initialization. The machine _is_ netbooting
(kernel via PXE, nfs root), though.
When it hangs, I see
[ 1.069553] v2.3 : Micro Memory(tm) PCI memory board block driver
[ 1.075780] umem 0000:02:01.0: can't find IRQ for PCI INT C; probably buggy MP table
[ 1.083633] umem 0000:02:01.0: Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))
[ 1.092762] umem 0000:02:01.0: CSR 0xfc9ffc00 -> 0xffffc90001466c00 (0x100)
[ 1.099880] umem 0000:02:01.0: Size 1048576 KB, Battery 1 Disabled (FAILURE), Battery 2 Disabled (FAILURE)
[ 1.109745] umem 0000:02:01.0: Window size 16777216 bytes, IRQ 9
[ 1.115842] umem 0000:02:01.0: memory NOT initialized. Consider over-writing whole device.
[ 1.125778] umema:
[ 240.886560] INFO: task swapper:1 blocked for more than 120 seconds.
[ 240.893186] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 240.901115] swapper D 0000000000000001 0 1 0 0x00000000
[ 240.908231] ffff8800f8da1b50 0000000000000046 ffff8800f8da1ac0 ffff8800f8da1fd8
[ 240.916027] ffff8800f8d80050 0000000000004000 0000000000004000 00000000001d2180
[ 240.923819] 00000000001d2180 ffff8800f8da1fd8 ffff8800f8da1fd8 00000000001d2180
[ 240.931611] Call Trace:
[ 240.934133] [<ffffffff8144f96d>] ? _raw_spin_unlock_irqrestore+0x4c/0x68
[ 240.941011] [<ffffffff812a99ab>] ? mm_unplug_device+0x47/0x50
[ 240.946929] [<ffffffff8144cb84>] io_schedule+0x38/0x4d
[ 240.952238] [<ffffffff810802d0>] sync_page+0x4c/0x50
[ 240.957370] [<ffffffff8144cf9b>] __wait_on_bit_lock+0x42/0x8b
[ 240.963288] [<ffffffff81080284>] ? sync_page+0x0/0x50
[ 240.968508] [<ffffffff81080270>] __lock_page+0x64/0x6b
[ 240.973821] [<ffffffff8104b500>] ? wake_bit_function+0x0/0x2a
[ 240.979741] [<ffffffff81080796>] do_read_cache_page+0xd3/0x135
[ 240.985745] [<ffffffff810da132>] ? blkdev_readpage+0x0/0x15
[ 240.991492] [<ffffffff81080834>] read_cache_page_async+0x17/0x19
[ 240.997671] [<ffffffff8108083f>] read_cache_page+0x9/0x13
[ 241.003244] [<ffffffff81102a7b>] read_dev_sector+0x2e/0x93
[ 241.008903] [<ffffffff8110397c>] ? adfspart_check_ICS+0x0/0x19c
[ 241.014997] [<ffffffff811039b6>] adfspart_check_ICS+0x3a/0x19c
[ 241.021001] [<ffffffff81432011>] ? kmemleak_alloc+0x5b/0xa2
[ 241.026748] [<ffffffff810ab6d9>] ? kmem_cache_alloc+0x14f/0x17d
[ 241.032842] [<ffffffff8110397c>] ? adfspart_check_ICS+0x0/0x19c
[ 241.038934] [<ffffffff81103778>] rescan_partitions+0x196/0x39a
[ 241.044940] [<ffffffff8121a24e>] ? disk_get_part+0x74/0xbc
[ 241.050600] [<ffffffff810da63a>] __blkdev_get+0x271/0x365
[ 241.056172] [<ffffffff81222b14>] ? kobject_put+0x47/0x4c
[ 241.061658] [<ffffffff810da739>] blkdev_get+0xb/0xd
[ 241.066708] [<ffffffff81103121>] register_disk+0xbd/0x11f
[ 241.072274] [<ffffffff8121a3be>] add_disk+0xb8/0x116
[ 241.077414] [<ffffffff8193abbf>] mm_init+0x126/0x19e
[ 241.082556] [<ffffffff8193aa99>] ? mm_init+0x0/0x19e
[ 241.087693] [<ffffffff810001f0>] do_one_initcall+0x5a/0x14f
[ 241.093440] [<ffffffff81914908>] kernel_init+0x148/0x1d2
[ 241.098925] [<ffffffff81003794>] kernel_thread_helper+0x4/0x10
[ 241.104933] [<ffffffff8102cd00>] ? can_nice+0x19/0x3a
[ 241.110157] [<ffffffff8144fcc0>] ? restore_args+0x0/0x30
[ 241.115644] [<ffffffff819147c0>] ? kernel_init+0x0/0x1d2
[ 241.121128] [<ffffffff81003790>] ? kernel_thread_helper+0x0/0x10
[ 241.127300] 1 lock held by swapper/1:
[ 241.131046] #0: (&bdev->bd_mutex){+.+.+.}, at: [<ffffffff810da428>] __blkdev_get+0x5f/0x365
and with the above commit reverted, I get a 'normal' umem driver init (the
umem errors/warnings are normal.. the batteries aren't connected and the
card isn't being used):
Jun 17 12:49:58 ceph3 kernel: [ 2.270121] v2.3 : Micro Memory(tm) PCI memory board block driver
Jun 17 12:49:58 ceph3 kernel: [ 2.276360] umem 0000:02:01.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
Jun 17 12:49:58 ceph3 kernel: [ 2.283237] umem 0000:02:01.0: Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))
Jun 17 12:49:58 ceph3 kernel: [ 2.292366] umem 0000:02:01.0: CSR 0xfc9ffc00 -> 0xffffc90001478c00 (0x100)
Jun 17 12:49:58 ceph3 kernel: [ 2.299476] umem 0000:02:01.0: Size 1048576 KB, Battery 1 Disabled (FAILURE), Battery 2 Disabled (FAILURE)
Jun 17 12:49:58 ceph3 kernel: [ 2.309507] umem 0000:02:01.0: Window size 16777216 bytes, IRQ 20
Jun 17 12:49:58 ceph3 kernel: [ 2.315691] umem 0000:02:01.0: memory NOT initialized. Consider over-writing whole device.
Jun 17 12:49:58 ceph3 kernel: [ 2.325697] umema:
Jun 17 12:49:58 ceph3 kernel: [ 2.328102] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.328239] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.328239] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.328239] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.328239] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.354756] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.360235] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.360248] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.366169] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.366175] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.370075] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.370075] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.370075] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.392548] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.398022] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.398031] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.403926] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.403933] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.407853] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.407853] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.407853] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.430297] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.435774] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.435783] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.441677] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.441684] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.445605] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.445605] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.445605] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.468037] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.473517] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.473525] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.479499] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.479506] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.483350] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.483350] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.483350] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.510375] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.515856] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.515863] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.521769] ldm_validate_partition_table(): Disk read failed.
Jun 17 12:49:58 ceph3 kernel: [ 2.527637] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.527644] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.531590] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.531590] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.531590] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.553992] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.559466] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.559473] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.565371] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.565378] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.569297] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.569297] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.569297] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.591729] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.597212] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.597220] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.603117] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.603124] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.607042] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.607042] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.607042] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.629472] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.634955] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.634962] Buffer I/O error on device umema, logical block 0
Jun 17 12:49:58 ceph3 kernel: [ 2.640849] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.640856] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.644785] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.644785] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.672688] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.683375] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.687328] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.715281] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.719213] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.741630] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.747111] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.747194] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.747200] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.751109] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.751109] umem 0000:02:01.0: Fault Address 0x0000003ff8, Fault Data 0xefdfffffffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.773549] umem 0000:02:01.0: I/O error on sector 24/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.779118] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.779182] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.779189] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.783116] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.783116] umem 0000:02:01.0: Fault Address 0x0000003ff8, Fault Data 0xefdfffffffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.783116] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.805537] umem 0000:02:01.0: I/O error on sector 24/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.811098] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.811163] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.811170] umem 0000:02:01.0: Memory access error detected (err count 0)
Jun 17 12:49:58 ceph3 kernel: [ 2.815096] umem 0000:02:01.0: Multi-bit EDC error
Jun 17 12:49:58 ceph3 kernel: [ 2.815096] umem 0000:02:01.0: Fault Address 0x0000000ff8, Fault Data 0xfff7fffdffffffff
Jun 17 12:49:58 ceph3 kernel: [ 2.815096] umem 0000:02:01.0: Fault Check 0x00, Fault Syndrome 0x00
Jun 17 12:49:58 ceph3 kernel: [ 2.837518] umem 0000:02:01.0: I/O error on sector 0/4096
Jun 17 12:49:58 ceph3 kernel: [ 2.843000] umem 0000:02:01.0: DMAstat - ANY_ERR MBE_ERR CHAIN_COMPLETE DMA_COMPLETE
Jun 17 12:49:58 ceph3 kernel: [ 2.843269] unable to read partition table
Jun 17 12:49:58 ceph3 kernel: [ 2.849039] MM: desc_per_page = 128
.config is attached.
sage
View attachment ".config" of type "TEXT/PLAIN" (60249 bytes)
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