Re: [PATCH 00/71] More fixes, cleanup and modernization for NCR5380 drivers

Ondrej Zary
2015-11-20T18:29:30Z

On Friday 20 November 2015 02:41:19 Finn Thain wrote:
>
> On Thu, 19 Nov 2015, Ondrej Zary wrote:
>
> > On Thursday 19 November 2015 03:24:56 Finn Thain wrote:
> >
> > > On Wed, 18 Nov 2015, Ondrej Zary wrote:
> > >
> > > >
> > > > I have some NCR5380 ISA cards and can test them.
> > >
> > > Thanks Ondrej. I've no idea which ISA drivers are presently working in
> > > mainline. Finding regressions may be more difficult than usual ;-)
> >
> > You're right... looks very broken:
> >
> > [ 62.577194] scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x240, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2,
> > sg_tablesize 128, this_id 7, flags { DTC3181E NO_PSEUDO_DMA }, USLEEP_POLL 3, USLEEP_WAITLONG 1250, options { AUTOPROBE_IRQ PSEUDO_DMA
> > NCR53C400 }
> > [ 62.796635] scsi 2:0:0:0: Direct-Access IBM 0663 e PQ: 0 ANSI: 2
> > [ 63.878494] sd 2:0:0:0: Attached scsi generic sg1 type 0
> > [ 95.848260] sd 2:0:0:0: aborting command
> >
> > And the system hangs completely.
> >
>
> Yes. That was the usual failure mode. The old EH abort routine is fatal.
> Up until I disabled PDMA by default for mac_scsi (in v3.19), that driver
> would do the same thing.
>
> > It's much better with your patches, but still not great :)
> >
>
> Pleased to hear it :)
>
> > [ 93.963264] pnp 01:01.00: [io 0x0240-0x025f]
> > [ 93.963493] pnp 01:01.00: [irq 5]
> > [ 93.965768] pnp 01:01.00: activated
> > [ 93.977147] scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x240, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2,
> > sg_tablesize 128, this_id 7, flags { DTC3181E NO_PSEUDO_DMA }, options { AUTOPROBE_IRQ PSEUDO_DMA }
> > [ 93.987527] scsi host2: rejecting message
> > [ 93.987647] Synchronous Data Transfer Request period = 100 ns offset = 12
> > [ 94.001219] scsi 2:0:0:0: Direct-Access IBM 0663 e PQ: 0 ANSI: 2
> > [ 113.000794] sd 2:0:0:0: Attached scsi generic sg1 type 0
>
> I'd be interested to know what commands were in play in that 19 second
> interval. Might need to use scsi_logging_level to figure that out.
>
> My tests involved 3 different scsi targets (two disks and a CD-ROM) but
> none of these send a SDTR. Your log says the driver correctly rejected the
> SDTR message but that doesn't mean the target actually went to MSG IN
> phase and got the message. Do you have any older targets you can test?

Another disk, without patches:

[ 84.481582] pnp 01:01.00: activated
[ 84.489650] scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x240, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2, sg_tablesize 128, this_id 7, flags { DTC3181E NO_PSEUDO_DMA }, USLEEP_POLL 3, USLEEP_WAITLONG 1250, options { AUTOPROBE_IRQ PSEUDO_DMA NCR53C400 }
[ 84.953332] scsi 2:0:1:0: Direct-Access QUANTUM LP240S GM240S01X 4.6 PQ: 0 ANSI: 2 CCS
[ 86.786475] sd 2:0:1:0: Attached scsi generic sg1 type 0
[ 86.793753] sd 2:0:1:0: [sdb] 479350 512-byte logical blocks: (245 MB/234 MiB)
[ 86.998555] sd 2:0:1:0: [sdb] Write Protect is off
[ 87.406068] sd 2:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 118.888271] sd 2:0:1:0: [sdb] aborting command
[ 118.888738] sd 2:0:1:0: [sdb] aborting command

With patches:

[ 258.473748] pnp 01:01.00: activated
[ 258.483592] scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x240, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2, sg_tablesize 128, this_id 7, flags { DTC3181E NO_PSEUDO_DMA }, options { AUTOPROBE_IRQ PSEUDO_DMA }
[ 261.347632] scsi 2:0:1:0: Direct-Access QUANTUM LP240S GM240S01X 4.6 PQ: 0 ANSI: 2 CCS
[ 275.560451] sd 2:0:1:0: Attached scsi generic sg1 type 0
[ 275.632519] sd 2:0:1:0: [sdb] 479350 512-byte logical blocks: (245 MB/234 MiB)
[ 275.635533] sd 2:0:1:0: [sdb] Write Protect is off
[ 275.642315] sd 2:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 469.076347] sd 2:0:1:0: [sdb] FAILED Result: hostbyte=DID_TIME_OUT driverbyte=DRIVER_SENSE
[ 469.076613] sd 2:0:1:0: [sdb] Sense Key : Aborted Command [current]
[ 469.076851] sd 2:0:1:0: [sdb] Add. Sense: No additional sense information
[ 469.077086] sd 2:0:1:0: [sdb] CDB: Read(10) 28 00 00 00 00 02 00 00 02 00
[ 469.077306] blk_update_request: I/O error, dev sdb, sector 2
[ 469.077522] Buffer I/O error on dev sdb, logical block 1, async page read
[ 480.108255] INFO: task kworker/u2:2:60 blocked for more than 120 seconds.
[ 480.109773] Not tainted 4.3.0-rc1+ #74
[ 480.109973] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 480.110179] kworker/u2:2 D 00000040 0 60 2 0x00000000
[ 480.110671] Workqueue: events_unbound async_run_entry_fn
[ 480.110999] cf9e8780 00000046 2eff25f7 00000040 c117f111 2ee82733 00000040 0016fec4
[ 480.112390] 00000000 cfaa6000 00000000 7fffffff c139c7d2 c139c504 7fffffff c139d9d3
[ 480.113661] 00000040 cfaa5cfc c106f460 00161108 00000000 0000c648 2106dcce 00000040
[ 480.114893] Call Trace:
[ 480.115124] [<c117f111>] ? blk_queue_bio+0x1e8/0x1fb
[ 480.115344] [<c139c7d2>] ? bit_wait_io_timeout+0x3d/0x3d
[ 480.115564] [<c139c504>] ? schedule+0x5b/0x67
[ 480.115794] [<c139d9d3>] ? schedule_timeout+0x13/0xc5
[ 480.116007] [<c106f460>] ? timekeeping_get_ns+0x10/0x69
[ 480.116406] [<c139c7d2>] ? bit_wait_io_timeout+0x3d/0x3d
[ 480.116636] [<c106fae7>] ? ktime_get+0x38/0x48
[ 480.116843] [<c139bf83>] ? io_schedule_timeout+0x83/0xd7
[ 480.117062] [<c139c7f3>] ? bit_wait_io+0x21/0x26
[ 480.117256] [<c139c697>] ? __wait_on_bit+0x2f/0x5a
[ 480.117486] [<c10ff1eb>] ? blkdev_readpages+0x15/0x15
[ 480.117704] [<c10ad361>] ? wait_on_page_bit+0x57/0x5e
[ 480.117942] [<c1054a98>] ? wake_atomic_t_function+0x2a/0x2a
[ 480.118151] [<c10ad386>] ? wait_on_page_read+0xf/0x2a
[ 480.118373] [<c10ae0e1>] ? do_read_cache_page+0x8e/0x116
[ 480.118587] [<c10ff1eb>] ? blkdev_readpages+0x15/0x15
[ 480.118809] [<c10ae192>] ? read_cache_page+0x14/0x18
[ 480.119008] [<c1189b0e>] ? read_dev_sector+0x25/0x57
[ 480.119222] [<c118a8a8>] ? adfspart_check_ICS+0x30/0x1ac
[ 480.119438] [<c119a3f1>] ? vsnprintf+0x78/0x25d
[ 480.119671] [<c119a614>] ? snprintf+0x16/0x18
[ 480.119874] [<c118a7ea>] ? check_partition+0xd7/0x165
[ 480.120253] [<c118a067>] ? rescan_partitions+0x95/0x283
[ 480.120443] [<c1254b50>] ? scsi_block_when_processing_errors+0x13/0xae
[ 480.120693] [<c139cbc6>] ? mutex_lock+0x9/0x21
[ 480.120915] [<c1100046>] ? __blkdev_get+0x155/0x2f6
[ 480.121133] [<c110032f>] ? blkdev_get+0x148/0x258
[ 480.121350] [<c10ec747>] ? unlock_new_inode+0x36/0x3c
[ 480.121570] [<c10ff106>] ? bdget+0xdc/0xe6
[ 480.121761] [<c118854f>] ? add_disk+0x221/0x368
[ 480.121996] [<c126321a>] ? sd_probe_async+0xed/0x157
[ 480.122214] [<c10443a0>] ? async_run_entry_fn+0x2c/0xad
[ 480.122437] [<c103f060>] ? process_one_work+0x130/0x21f
[ 480.122639] [<c103f2f6>] ? worker_thread+0x18a/0x247
[ 480.122854] [<c103f16c>] ? process_scheduled_works+0x1d/0x1d
[ 480.123069] [<c1042c46>] ? kthread+0x7c/0x81
[ 480.123288] [<c139e201>] ? ret_from_kernel_thread+0x21/0x30
[ 480.123493] [<c1042bca>] ? kthread_parkme+0x11/0x11
[ 480.123733] INFO: task modprobe:1977 blocked for more than 120 seconds.
[ 480.123919] Not tainted 4.3.0-rc1+ #74
[ 480.124239] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 480.124410] modprobe D 00000040 0 1977 1969 0x00000000
[ 480.124864] cfb20000 00000086 29042653 00000040 c1525f88 28a83a17 00000040 005bec3c
[ 480.126123] 00000000 ccdd0000 ffffffff ffffffff d2057280 c139c504 00000000 c104416d
[ 480.127354] 00000000 cfb20000 c1054a45 c151fd8c c151fd8c d2057280 00000000 ccd621f0
[ 480.128746] Call Trace:
[ 480.128961] [<c139c504>] ? schedule+0x5b/0x67
[ 480.129202] [<c104416d>] ? async_synchronize_cookie_domain+0x73/0x9f
[ 480.129449] [<c1054a45>] ? abort_exclusive_wait+0x6e/0x6e
[ 480.129667] [<c10ac9bc>] ? do_init_module+0xa4/0x1a3
[ 480.129899] [<c107ddb5>] ? load_module+0x14de/0x18ca
[ 480.130119] [<c107e2a0>] ? SyS_finit_module+0x47/0x56
[ 480.130346] [<c139e2c0>] ? sysenter_do_call+0x12/0x12
[ 502.100317] sd 2:0:1:0: [sdb] FAILED Result: hostbyte=DID_TIME_OUT driverbyte=DRIVER_SENSE
[ 502.100578] sd 2:0:1:0: [sdb] Sense Key : Aborted Command [current]
[ 502.100818] sd 2:0:1:0: [sdb] Add. Sense: No additional sense information
[ 502.101057] sd 2:0:1:0: [sdb] CDB: Read(10) 28 00 00 00 00 04 00 00 02 00
[ 502.101279] blk_update_request: I/O error, dev sdb, sector 4
[ 502.101495] Buffer I/O error on dev sdb, logical block 2, async page read
[ 600.128255] INFO: task kworker/u2:2:60 blocked for more than 120 seconds.
[ 600.128486] Not tainted 4.3.0-rc1+ #74
[ 600.128687] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 600.128891] kworker/u2:2 D 00000040 0 60 2 0x00000000
[ 600.129381] Workqueue: events_unbound async_run_entry_fn
[ 600.129709] cf9e8780 00000046 2eff25f7 00000040 c117f111 2ee82733 00000040 0016fec4
[ 600.130941] 00000000 cfaa6000 00000000 7fffffff c139c7d2 c139c504 7fffffff c139d9d3
[ 600.132342] 00000040 cfaa5cfc c106f460 00161108 00000000 0000c648 2106dcce 00000040
[ 600.133613] Call Trace:
[ 600.133821] [<c117f111>] ? blk_queue_bio+0x1e8/0x1fb
[ 600.134065] [<c139c7d2>] ? bit_wait_io_timeout+0x3d/0x3d
[ 600.134283] [<c139c504>] ? schedule+0x5b/0x67
[ 600.134509] [<c139d9d3>] ? schedule_timeout+0x13/0xc5
[ 600.134723] [<c106f460>] ? timekeeping_get_ns+0x10/0x69
[ 600.134948] [<c139c7d2>] ? bit_wait_io_timeout+0x3d/0x3d
[ 600.135154] [<c106fae7>] ? ktime_get+0x38/0x48
[ 600.135377] [<c139bf83>] ? io_schedule_timeout+0x83/0xd7
[ 600.135576] [<c139c7f3>] ? bit_wait_io+0x21/0x26
[ 600.135788] [<c139c697>] ? __wait_on_bit+0x2f/0x5a
[ 600.136000] [<c10ff1eb>] ? blkdev_readpages+0x15/0x15
[ 600.136399] [<c10ad361>] ? wait_on_page_bit+0x57/0x5e
[ 600.136607] [<c1054a98>] ? wake_atomic_t_function+0x2a/0x2a
[ 600.136838] [<c10ad386>] ? wait_on_page_read+0xf/0x2a
[ 600.137044] [<c10ae0e1>] ? do_read_cache_page+0x8e/0x116
[ 600.137276] [<c10ff1eb>] ? blkdev_readpages+0x15/0x15
[ 600.137481] [<c10ae192>] ? read_cache_page+0x14/0x18
[ 600.137699] [<c1189b0e>] ? read_dev_sector+0x25/0x57
[ 600.137901] [<c118a8a8>] ? adfspart_check_ICS+0x30/0x1ac
[ 600.138131] [<c119a3f1>] ? vsnprintf+0x78/0x25d
[ 600.138329] [<c119a614>] ? snprintf+0x16/0x18
[ 600.138544] [<c118a7ea>] ? check_partition+0xd7/0x165
[ 600.138738] [<c118a067>] ? rescan_partitions+0x95/0x283
[ 600.138962] [<c1254b50>] ? scsi_block_when_processing_errors+0x13/0xae
[ 600.139189] [<c139cbc6>] ? mutex_lock+0x9/0x21
[ 600.139427] [<c1100046>] ? __blkdev_get+0x155/0x2f6
[ 600.139632] [<c110032f>] ? blkdev_get+0x148/0x258
[ 600.139865] [<c10ec747>] ? unlock_new_inode+0x36/0x3c
[ 600.140263] [<c10ff106>] ? bdget+0xdc/0xe6
[ 600.140448] [<c118854f>] ? add_disk+0x221/0x368
[ 600.140689] [<c126321a>] ? sd_probe_async+0xed/0x157
[ 600.140908] [<c10443a0>] ? async_run_entry_fn+0x2c/0xad
[ 600.141133] [<c103f060>] ? process_one_work+0x130/0x21f
[ 600.141336] [<c103f2f6>] ? worker_thread+0x18a/0x247
[ 600.141552] [<c103f16c>] ? process_scheduled_works+0x1d/0x1d
[ 600.141764] [<c1042c46>] ? kthread+0x7c/0x81
[ 600.141982] [<c139e201>] ? ret_from_kernel_thread+0x21/0x30
[ 600.142186] [<c1042bca>] ? kthread_parkme+0x11/0x11
[ 600.142426] INFO: task modprobe:1977 blocked for more than 120 seconds.
[ 600.142612] Not tainted 4.3.0-rc1+ #74
[ 600.142787] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 600.142991] modprobe D 00000040 0 1977 1969 0x00000000
[ 600.143444] cfb20000 00000086 29042653 00000040 c1525f88 28a83a17 00000040 005bec3c
[ 600.144819] 00000000 ccdd0000 ffffffff ffffffff d2057280 c139c504 00000000 c104416d
[ 600.146052] 00000000 cfb20000 c1054a45 c151fd8c c151fd8c d2057280 00000000 ccd621f0
[ 600.147279] Call Trace:
[ 600.147489] [<c139c504>] ? schedule+0x5b/0x67
[ 600.147729] [<c104416d>] ? async_synchronize_cookie_domain+0x73/0x9f
[ 600.147992] [<c1054a45>] ? abort_exclusive_wait+0x6e/0x6e
[ 600.148390] [<c10ac9bc>] ? do_init_module+0xa4/0x1a3
[ 600.148627] [<c107ddb5>] ? load_module+0x14de/0x18ca
[ 600.148846] [<c107e2a0>] ? SyS_finit_module+0x47/0x56
[ 600.149073] [<c139e2c0>] ? sysenter_do_call+0x12/0x12
[ 662.100333] sd 2:0:1:0: [sdb] FAILED Result: hostbyte=DID_TIME_OUT driverbyte=DRIVER_SENSE
[ 662.100598] sd 2:0:1:0: [sdb] Sense Key : Aborted Command [current]
[ 662.100838] sd 2:0:1:0: [sdb] Add. Sense: No additional sense information
[ 662.101076] sd 2:0:1:0: [sdb] CDB: Read(10) 28 00 00 00 00 06 00 00 02 00
[ 662.101297] blk_update_request: I/O error, dev sdb, sector 6
[ 662.101512] Buffer I/O error on dev sdb, logical block 3, async page read
[ 720.148270] INFO: task modprobe:1977 blocked for more than 120 seconds.
[ 720.148499] Not tainted 4.3.0-rc1+ #74
[ 720.148699] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 720.148903] modprobe D 00000040 0 1977 1969 0x00000000
[ 720.149360] cfb20000 00000086 29042653 00000040 c1525f88 28a83a17 00000040 005bec3c
[ 720.150615] 00000000 ccdd0000 ffffffff ffffffff d2057280 c139c504 00000000 c104416d
[ 720.151836] 00000000 cfb20000 c1054a45 c151fd8c c151fd8c d2057280 00000000 ccd621f0
[ 720.153221] Call Trace:
[ 720.153465] [<c139c504>] ? schedule+0x5b/0x67
[ 720.153689] [<c104416d>] ? async_synchronize_cookie_domain+0x73/0x9f
[ 720.153931] [<c1054a45>] ? abort_exclusive_wait+0x6e/0x6e
[ 720.154149] [<c10ac9bc>] ? do_init_module+0xa4/0x1a3
[ 720.154379] [<c107ddb5>] ? load_module+0x14de/0x18ca
[ 720.154593] [<c107e2a0>] ? SyS_finit_module+0x47/0x56
[ 720.154820] [<c139e2c0>] ? sysenter_do_call+0x12/0x12
[ 781.025039] systemd-logind[1942]: New session c2 of user rainbow.
[ 840.152254] INFO: task kworker/u2:2:60 blocked for more than 120 seconds.
[ 840.152486] Not tainted 4.3.0-rc1+ #74
[ 840.152693] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 840.152903] kworker/u2:2 D 0000009a 0 60 2 0x00000000
[ 840.153399] Workqueue: events_unbound async_run_entry_fn
[ 840.153730] cf9e8780 00000046 2860b1ff 0000009a c117f111 284404dd 0000009a 001cad22
[ 840.156408] 00000000 cfaa6000 00000000 7fffffff c139c7d2 c139c504 7fffffff c139d9d3
[ 840.157689] 0000009a cfaa5c64 c106f460 00161e18 00000000 00013d94 006b70ce 0000009a
[ 840.158925] Call Trace:
[ 840.159158] [<c117f111>] ? blk_queue_bio+0x1e8/0x1fb
[ 840.159379] [<c139c7d2>] ? bit_wait_io_timeout+0x3d/0x3d
[ 840.159600] [<c139c504>] ? schedule+0x5b/0x67
[ 840.159834] [<c139d9d3>] ? schedule_timeout+0x13/0xc5
[ 840.160052] [<c106f460>] ? timekeeping_get_ns+0x10/0x69
[ 840.160446] [<c139c7d2>] ? bit_wait_io_timeout+0x3d/0x3d
[ 840.160677] [<c106fae7>] ? ktime_get+0x38/0x48
[ 840.160884] [<c139bf83>] ? io_schedule_timeout+0x83/0xd7
[ 840.161105] [<c139c7f3>] ? bit_wait_io+0x21/0x26
[ 840.161306] [<c139c697>] ? __wait_on_bit+0x2f/0x5a
[ 840.161541] [<c10ad361>] ? wait_on_page_bit+0x57/0x5e
[ 840.161767] [<c1054a98>] ? wake_atomic_t_function+0x2a/0x2a
[ 840.161997] [<c10ad386>] ? wait_on_page_read+0xf/0x2a
[ 840.162206] [<c10ae14f>] ? do_read_cache_page+0xfc/0x116
[ 840.162445] [<c10ff1eb>] ? blkdev_readpages+0x15/0x15
[ 840.162651] [<c10ae192>] ? read_cache_page+0x14/0x18
[ 840.162872] [<c1189b0e>] ? read_dev_sector+0x25/0x57
[ 840.163073] [<c118e22f>] ? read_lba+0x94/0x10b
[ 840.163289] [<c118e7eb>] ? efi_partition+0xbc/0x451
[ 840.163506] [<c10b5c33>] ? put_page+0x16/0x24
[ 840.163732] [<c10ad39d>] ? wait_on_page_read+0x26/0x2a
[ 840.163968] [<c10ff1eb>] ? blkdev_readpages+0x15/0x15
[ 840.164348] [<c10ae192>] ? read_cache_page+0x14/0x18
[ 840.164541] [<c118a8a8>] ? adfspart_check_ICS+0x30/0x1ac
[ 840.164777] [<c119a3f1>] ? vsnprintf+0x78/0x25d
[ 840.164977] [<c119a614>] ? snprintf+0x16/0x18
[ 840.165187] [<c118a7ea>] ? check_partition+0xd7/0x165
[ 840.165382] [<c118a067>] ? rescan_partitions+0x95/0x283
[ 840.165603] [<c1254b50>] ? scsi_block_when_processing_errors+0x13/0xae
[ 840.165829] [<c139cbc6>] ? mutex_lock+0x9/0x21
[ 840.166066] [<c1100046>] ? __blkdev_get+0x155/0x2f6
[ 840.166270] [<c110032f>] ? blkdev_get+0x148/0x258
[ 840.166501] [<c10ec747>] ? unlock_new_inode+0x36/0x3c
[ 840.166707] [<c10ff106>] ? bdget+0xdc/0xe6
[ 840.166914] [<c118854f>] ? add_disk+0x221/0x368
[ 840.167134] [<c126321a>] ? sd_probe_async+0xed/0x157
[ 840.167372] [<c10443a0>] ? async_run_entry_fn+0x2c/0xad
[ 840.167582] [<c103f060>] ? process_one_work+0x130/0x21f
[ 840.167802] [<c103f2f6>] ? worker_thread+0x18a/0x247
[ 840.168006] [<c103f16c>] ? process_scheduled_works+0x1d/0x1d
[ 840.168416] [<c1042c46>] ? kthread+0x7c/0x81
[ 840.168642] [<c139e201>] ? ret_from_kernel_thread+0x21/0x30
[ 840.168847] [<c1042bca>] ? kthread_parkme+0x11/0x11
[ 840.169094] INFO: task modprobe:1977 blocked for more than 120 seconds.
[ 840.169281] Not tainted 4.3.0-rc1+ #74
[ 840.169454] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 840.169659] modprobe D 00000040 0 1977 1969 0x00000000
[ 840.170114] cfb20000 00000086 29042653 00000040 c1525f88 28a83a17 00000040 005bec3c
[ 840.171368] 00000000 ccdd0000 ffffffff ffffffff d2057280 c139c504 00000000 c104416d
[ 840.172741] 00000000 cfb20000 c1054a45 c151fd8c c151fd8c d2057280 00000000 ccd621f0
[ 840.173986] Call Trace:
[ 840.174200] [<c139c504>] ? schedule+0x5b/0x67
[ 840.174443] [<c104416d>] ? async_synchronize_cookie_domain+0x73/0x9f
[ 840.174689] [<c1054a45>] ? abort_exclusive_wait+0x6e/0x6e
[ 840.174910] [<c10ac9bc>] ? do_init_module+0xa4/0x1a3
[ 840.175141] [<c107ddb5>] ? load_module+0x14de/0x18ca
[ 840.175359] [<c107e2a0>] ? SyS_finit_module+0x47/0x56
[ 840.175607] [<c139e2c0>] ? sysenter_do_call+0x12/0x12
[ 856.020359] sd 2:0:1:0: [sdb] FAILED Result: hostbyte=DID_TIME_OUT driverbyte=DRIVER_SENSE
[ 856.020623] sd 2:0:1:0: [sdb] Sense Key : Aborted Command [current]
[ 856.020862] sd 2:0:1:0: [sdb] Add. Sense: No additional sense information
[ 856.021101] sd 2:0:1:0: [sdb] CDB: Read(10) 28 00 00 00 00 02 00 00 02 00
[ 856.021324] blk_update_request: I/O error, dev sdb, sector 2
[ 856.021539] Buffer I/O error on dev sdb, logical block 1, async page read
[ 857.025325] sd 2:0:1:0: [sdb] FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
[ 857.025596] sd 2:0:1:0: [sdb] CDB: Read(10) 28 00 00 00 00 04 00 00 02 00
[ 857.025830] blk_update_request: I/O error, dev sdb, sector 4
[ 857.026043] Buffer I/O error on dev sdb, logical block 2, async page read

And a CD-ROM, first without patches:
[ 655.929795] pnp 01:01.00: activated
[ 655.939503] scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x240, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2, sg_tablesize 128, this_id 7, flags { DTC3181E NO_PSEUDO_DMA }, USLEEP_POLL 3, USLEEP_WAITLONG 1250, options { AUTOPROBE_IRQ PSEUDO_DMA NCR53C400 }
[ 656.441943] scsi 2:0:2:0: CD-ROM SONY CD-ROM CDU-55S 1.0t PQ: 0 ANSI: 2
[ 657.829087] scsi 2:0:2:0: Attached scsi generic sg1 type 5
[ 658.325517] sr 2:0:2:0: [sr0] scsi-1 drive
[ 658.325731] cdrom: Uniform CD-ROM driver Revision: 3.20

Modprobe succeeded but mount resulted in this & hang:
[ 694.056266] sr 2:0:2:0: [sr0] aborting command

Then with patches:

[ 109.753273] pnp 01:01.00: activated
[ 109.763039] scsi host2: Generic NCR5380/NCR53C400 SCSI, io_port 0x240, n_io_port 16, base 0x0, irq 0, can_queue 16, cmd_per_lun 2, sg_tablesize 128, this_id 7, flags { DTC3181E NO_PSEUDO_DMA }, options { AUTOPROBE_IRQ PSEUDO_DMA }
[ 115.456294] scsi 2:0:2:0: CD-ROM SONY CD-ROM CDU-55S 1.0t PQ: 0 ANSI: 2
[ 126.823400] scsi 2:0:2:0: Attached scsi generic sg1 type 5
[ 126.909680] sr 2:0:2:0: [sr0] scsi-1 drive
[ 126.909888] cdrom: Uniform CD-ROM driver Revision: 3.20

Modprobe succeeded but mount failed after some time with this:
[ 1005.149546] sr 2:0:2:0: [sr0] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1005.149764] sr 2:0:2:0: [sr0] Sense Key : Illegal Request [current]
[ 1005.149992] sr 2:0:2:0: [sr0] Add. Sense: Logical block address out of range
[ 1005.150222] sr 2:0:2:0: [sr0] CDB: Read(10) 28 00 00 05 7a 94 00 00 02 00
[ 1005.150433] blk_update_request: critical target error, dev sr0, sector 1436240
[ 1005.154101] sr 2:0:2:0: [sr0] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1005.154309] sr 2:0:2:0: [sr0] Sense Key : Illegal Request [current]
[ 1005.154533] sr 2:0:2:0: [sr0] Add. Sense: Logical block address out of range
[ 1005.156209] sr 2:0:2:0: [sr0] CDB: Read(10) 28 00 00 05 7a 94 00 00 02 00
[ 1005.156404] blk_update_request: critical target error, dev sr0, sector 1436240
[ 1005.156607] Buffer I/O error on dev sr0, logical block 179530, async page read

mount: unknown filesystem type 'iso9660'

--
Ondrej Zary