Bug 83571

Summary:	errors on writing on Samsung MicroSDXC 64 GB card in MMC card reader in ThinkPad T520
Product:	Drivers	Reporter:	Martin Steigerwald (Martin)
Component:	MMC/SD	Assignee:	drivers_mmc-sd
Status:	REOPENED ---
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	3.17-rc2	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	kern.log while this happened

Description Martin Steigerwald 2014-08-31 11:16:37 UTC

Hi!

I was copying between two SD cards. One SDHC 32 GB and one SDXC 64 GB from Samsung.

With rsync -aAHXSP and after a way I got this:



ATOP - merkaba               2014/08/31  12:49:03               ---------                 10s elapsed
PRC | sys    5.11s  | user   1.19s  | #proc    327  | #tslpu     3  | #zombie    0  | no  procacct  |
CPU | sys      70%  | user     13%  | irq      10%  | idle    140%  | wait    168%  | curscal   ?%  |
cpu | sys      29%  | user      2%  | irq      10%  | idle     59%  | cpu000 w  0%  | curscal   ?%  |
cpu | sys      17%  | user      7%  | irq       0%  | idle      0%  | cpu003 w 75%  | curscal   ?%  |
cpu | sys      17%  | user      2%  | irq       0%  | idle     82%  | cpu002 w  0%  | curscal   ?%  |
cpu | sys       7%  | user      2%  | irq       0%  | idle      0%  | cpu001 w 92%  | curscal   ?%  |
CPL | avg1    3.07  | avg5    2.69  | avg15   1.93  | csw   679567  | intr  344431  | numcpu     4  |
MEM | tot    15.5G  | free  551.8M  | cache  10.7G  | buff   20.1M  | slab    1.3G  | shmem 308.8M  |
SWP | tot    12.0G  | free   11.2G  |               |               | vmcom   6.0G  | vmlim  19.7G  |
LVM | msata-debian  | busy      0%  | read       0  | write      4  | MBw/s   0.00  | avio 2.75 ms  |
LVM |  sata-debian  | busy      0%  | read       0  | write      4  | MBw/s   0.00  | avio 0.25 ms  |
LVM |   msata-home  | busy      0%  | read       0  | write     11  | MBw/s   0.00  | avio 0.00 ms  |
LVM |    sata-home  | busy      0%  | read       0  | write     11  | MBw/s   0.00  | avio 0.00 ms  |
DSK |          sdb  | busy      0%  | read       0  | write      9  | MBw/s   0.01  | avio 1.22 ms  |
DSK |          sda  | busy      0%  | read       0  | write      9  | MBw/s   0.01  | avio 0.11 ms  |
NET | transport     | tcpi      20  | tcpo      22  | udpi       0  | udpo       0  | tcpao      0  |
NET | network       | ipi       20  | ipo       22  | ipfrw      0  | deliv     20  | icmpo      0  |
NET | eth0      0%  | pcki       7  | pcko       9  | si    1 Kbps  | so    1 Kbps  | erro       0  |
NET | lo      ----  | pcki      14  | pcko      14  | si    3 Kbps  | so    3 Kbps  | erro       0  |

  PID   TID  SYSCPU  USRCPU   VGROW  RGROW  RUID      EUID       THR ST  EXC  S   CPU CMD         1/2
22955     -   4.67s   0.00s      0K     0K  root      root         1 --    -  D   48% mmcqd/0

It was using about 50% of one Sandybridge core for minutes.

But I also got this:

Aug 31 11:53:12 merkaba kernel: [220463.531770] mmc0: card 0001 removed
Aug 31 11:53:13 merkaba kernel: [220464.458765] mmc0: new high speed SDXC card at address 0001
Aug 31 11:53:13 merkaba kernel: [220464.459361] mmcblk0: mmc0:0001 00000 58.5 GiB 
Aug 31 11:53:13 merkaba kernel: [220464.460729]  mmcblk0: p1
Aug 31 11:53:37 merkaba kernel: [220488.672502] mmc0: card 0001 removed
Aug 31 11:53:38 merkaba kernel: [220489.502114] mmc0: new high speed SDXC card at address 0001
Aug 31 11:53:38 merkaba kernel: [220489.502698] mmcblk0: mmc0:0001 00000 58.5 GiB 
Aug 31 11:53:38 merkaba kernel: [220489.503849]  mmcblk0: p1
Aug 31 11:53:40 merkaba kernel: [220491.157022] FAT-fs (mmcblk0p1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Aug 31 11:54:45 merkaba kernel: [220556.403446] mmc0: card 0001 removed
Aug 31 11:57:46 merkaba kernel: [220737.878471] usb 1-1.1: USB disconnect, device number 7
Aug 31 11:57:47 merkaba kernel: [220738.142201] usb 1-1.1: new high-speed USB device number 8 using ehci-pci
Aug 31 11:57:47 merkaba kernel: [220738.425552] usb 1-1.1: New USB device found, idVendor=1307, idProduct=0330
Aug 31 11:57:47 merkaba kernel: [220738.425567] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Aug 31 11:57:47 merkaba kernel: [220738.425574] usb 1-1.1: Product: Mass Storage Device
Aug 31 11:57:47 merkaba kernel: [220738.425579] usb 1-1.1: Manufacturer: Generic
Aug 31 11:57:47 merkaba kernel: [220738.425584] usb 1-1.1: SerialNumber: 00000000000006
Aug 31 11:57:47 merkaba kernel: [220738.426620] usb-storage 1-1.1:1.0: USB Mass Storage device detected
Aug 31 11:57:47 merkaba kernel: [220738.427012] scsi host16: usb-storage 1-1.1:1.0
Aug 31 11:57:48 merkaba kernel: [220739.429572] scsi 16:0:0:0: Direct-Access     Generic  USB  CF Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:48 merkaba kernel: [220739.430502] scsi 16:0:0:1: Direct-Access     Generic  USB  SD Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:48 merkaba kernel: [220739.431049] scsi 16:0:0:2: Direct-Access     Generic  Mini SD Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:48 merkaba kernel: [220739.432062] scsi 16:0:0:3: Direct-Access     Generic  USB  MS Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:48 merkaba kernel: [220739.460845] usb 1-1.1: USB disconnect, device number 8
Aug 31 11:57:48 merkaba kernel: [220739.467305] sd 16:0:0:0: [sdc] READ CAPACITY failed
Aug 31 11:57:48 merkaba kernel: [220739.467321] sd 16:0:0:0: [sdc]  
Aug 31 11:57:48 merkaba kernel: [220739.467330] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Aug 31 11:57:48 merkaba kernel: [220739.467339] sd 16:0:0:0: [sdc] Sense not available.
Aug 31 11:57:48 merkaba kernel: [220739.467405] sd 16:0:0:0: [sdc] Write Protect is off
Aug 31 11:57:48 merkaba kernel: [220739.467417] sd 16:0:0:0: [sdc] Mode Sense: 2e 2e 2f 2e
Aug 31 11:57:48 merkaba kernel: [220739.467478] sd 16:0:0:0: [sdc] No Caching mode page found
Aug 31 11:57:48 merkaba kernel: [220739.467489] sd 16:0:0:0: [sdc] Assuming drive cache: write through
Aug 31 11:57:48 merkaba kernel: [220739.467731] sd 16:0:0:0: Attached scsi generic sg3 type 0
Aug 31 11:57:48 merkaba kernel: [220739.469143] sd 16:0:0:0: [sdc] READ CAPACITY failed
Aug 31 11:57:48 merkaba kernel: [220739.469164] sd 16:0:0:0: [sdc]  
Aug 31 11:57:48 merkaba kernel: [220739.469172] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Aug 31 11:57:48 merkaba kernel: [220739.469180] sd 16:0:0:0: [sdc] Sense not available.
Aug 31 11:57:48 merkaba kernel: [220739.469290] sd 16:0:0:0: [sdc] Attached SCSI removable disk
Aug 31 11:57:48 merkaba kernel: [220739.470851] sd 16:0:0:1: [sdd] READ CAPACITY failed
Aug 31 11:57:48 merkaba kernel: [220739.470863] sd 16:0:0:1: [sdd]  
Aug 31 11:57:48 merkaba kernel: [220739.470870] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Aug 31 11:57:48 merkaba kernel: [220739.470878] sd 16:0:0:1: [sdd] Sense not available.
Aug 31 11:57:48 merkaba kernel: [220739.470940] sd 16:0:0:1: [sdd] Write Protect is off
Aug 31 11:57:48 merkaba kernel: [220739.470952] sd 16:0:0:1: [sdd] Mode Sense: 00 00 00 00
Aug 31 11:57:48 merkaba kernel: [220739.471009] sd 16:0:0:1: [sdd] Asking for cache data failed
Aug 31 11:57:48 merkaba kernel: [220739.471018] sd 16:0:0:1: [sdd] Assuming drive cache: write through
Aug 31 11:57:48 merkaba kernel: [220739.471921] sd 16:0:0:1: Attached scsi generic sg4 type 0
Aug 31 11:57:48 merkaba kernel: [220739.472690] sd 16:0:0:1: [sdd] READ CAPACITY failed
Aug 31 11:57:48 merkaba kernel: [220739.472700] sd 16:0:0:1: [sdd]  
Aug 31 11:57:48 merkaba kernel: [220739.472707] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Aug 31 11:57:48 merkaba kernel: [220739.472716] sd 16:0:0:1: [sdd] Sense not available.
Aug 31 11:57:48 merkaba kernel: [220739.472818] sd 16:0:0:1: [sdd] Attached SCSI removable disk
Aug 31 11:57:48 merkaba kernel: [220739.474166] sd 16:0:0:2: [sde] READ CAPACITY failed
Aug 31 11:57:48 merkaba kernel: [220739.474178] sd 16:0:0:2: [sde]  
Aug 31 11:57:48 merkaba kernel: [220739.474185] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Aug 31 11:57:48 merkaba kernel: [220739.474194] sd 16:0:0:2: [sde] Sense not available.
Aug 31 11:57:48 merkaba kernel: [220739.474253] sd 16:0:0:2: [sde] Write Protect is off
Aug 31 11:57:48 merkaba kernel: [220739.474268] sd 16:0:0:2: [sde] Mode Sense: 00 00 00 00
Aug 31 11:57:48 merkaba kernel: [220739.474323] sd 16:0:0:2: [sde] Asking for cache data failed
Aug 31 11:57:48 merkaba kernel: [220739.474333] sd 16:0:0:2: [sde] Assuming drive cache: write through
Aug 31 11:57:48 merkaba kernel: [220739.474408] sd 16:0:0:2: Attached scsi generic sg5 type 0
Aug 31 11:57:48 merkaba kernel: [220739.475806] sd 16:0:0:3: [sdf] READ CAPACITY failed
Aug 31 11:57:48 merkaba kernel: [220739.475817] sd 16:0:0:3: [sdf]  
Aug 31 11:57:48 merkaba kernel: [220739.475824] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Aug 31 11:57:48 merkaba kernel: [220739.475831] sd 16:0:0:3: [sdf] Sense not available.
Aug 31 11:57:48 merkaba kernel: [220739.475888] sd 16:0:0:3: [sdf] Write Protect is off
Aug 31 11:57:48 merkaba kernel: [220739.475898] sd 16:0:0:3: [sdf] Mode Sense: 00 00 00 00
Aug 31 11:57:48 merkaba kernel: [220739.475953] sd 16:0:0:3: [sdf] Asking for cache data failed
Aug 31 11:57:48 merkaba kernel: [220739.475962] sd 16:0:0:3: [sdf] Assuming drive cache: write through
Aug 31 11:57:48 merkaba kernel: [220739.476207] sd 16:0:0:3: Attached scsi generic sg6 type 0
Aug 31 11:57:48 merkaba kernel: [220739.477176] sd 16:0:0:3: [sdf] Attached SCSI removable disk
Aug 31 11:57:48 merkaba kernel: [220739.477198] sd 16:0:0:2: [sde] Attached SCSI removable disk
Aug 31 11:57:48 merkaba kernel: [220739.737383] usb 1-1.1: new high-speed USB device number 9 using ehci-pci
Aug 31 11:57:49 merkaba kernel: [220740.020680] usb 1-1.1: New USB device found, idVendor=1307, idProduct=0330
Aug 31 11:57:49 merkaba kernel: [220740.020695] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Aug 31 11:57:49 merkaba kernel: [220740.020702] usb 1-1.1: Product: Mass Storage Device
Aug 31 11:57:49 merkaba kernel: [220740.020708] usb 1-1.1: Manufacturer: Generic
Aug 31 11:57:49 merkaba kernel: [220740.020713] usb 1-1.1: SerialNumber: 00000000000006
Aug 31 11:57:49 merkaba kernel: [220740.021293] usb-storage 1-1.1:1.0: USB Mass Storage device detected
Aug 31 11:57:49 merkaba kernel: [220740.021488] scsi host17: usb-storage 1-1.1:1.0
Aug 31 11:57:49 merkaba kernel: [220740.182534] usb 1-1.1: USB disconnect, device number 9
Aug 31 11:57:49 merkaba kernel: [220740.360439] usb 1-1.1: new high-speed USB device number 10 using ehci-pci
Aug 31 11:57:49 merkaba kernel: [220740.643728] usb 1-1.1: New USB device found, idVendor=1307, idProduct=0330
Aug 31 11:57:49 merkaba kernel: [220740.643743] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Aug 31 11:57:49 merkaba kernel: [220740.643749] usb 1-1.1: Product: Mass Storage Device
Aug 31 11:57:49 merkaba kernel: [220740.643755] usb 1-1.1: Manufacturer: Generic
Aug 31 11:57:49 merkaba kernel: [220740.643760] usb 1-1.1: SerialNumber: 00000000000006
Aug 31 11:57:49 merkaba kernel: [220740.644877] usb-storage 1-1.1:1.0: USB Mass Storage device detected
Aug 31 11:57:49 merkaba kernel: [220740.646208] scsi host18: usb-storage 1-1.1:1.0
Aug 31 11:57:50 merkaba kernel: [220741.649819] scsi 18:0:0:0: Direct-Access     Generic  USB  CF Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:51 merkaba kernel: [220742.317727] scsi 18:0:0:1: Direct-Access     Generic  USB  SD Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:51 merkaba kernel: [220742.318751] scsi 18:0:0:2: Direct-Access     Generic  Mini SD Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:51 merkaba kernel: [220742.319435] scsi 18:0:0:3: Direct-Access     Generic  USB  MS Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:51 merkaba kernel: [220742.320223] scsi 18:0:0:4: Direct-Access     Generic  USB  SM Reader   0.00 PQ: 0 ANSI: 2
Aug 31 11:57:51 merkaba kernel: [220742.321937] sd 18:0:0:0: Attached scsi generic sg3 type 0
Aug 31 11:57:51 merkaba kernel: [220742.323850] sd 18:0:0:1: Attached scsi generic sg4 type 0
Aug 31 11:57:51 merkaba kernel: [220742.323914] sd 18:0:0:0: [sdc] Attached SCSI removable disk
Aug 31 11:57:51 merkaba kernel: [220742.325800] sd 18:0:0:1: [sdd] 61405184 512-byte logical blocks: (31.4 GB/29.2 GiB)
Aug 31 11:57:51 merkaba kernel: [220742.325935] sd 18:0:0:2: Attached scsi generic sg5 type 0
Aug 31 11:57:51 merkaba kernel: [220742.328802] sd 18:0:0:3: Attached scsi generic sg6 type 0
Aug 31 11:57:51 merkaba kernel: [220742.330279] sd 18:0:0:1: [sdd] Write Protect is off
Aug 31 11:57:51 merkaba kernel: [220742.330293] sd 18:0:0:1: [sdd] Mode Sense: 03 00 00 00
Aug 31 11:57:51 merkaba kernel: [220742.332898] sd 18:0:0:4: Attached scsi generic sg7 type 0
Aug 31 11:57:51 merkaba kernel: [220742.333264] sd 18:0:0:1: [sdd] No Caching mode page found
Aug 31 11:57:51 merkaba kernel: [220742.333273] sd 18:0:0:1: [sdd] Assuming drive cache: write through
Aug 31 11:57:51 merkaba kernel: [220742.335744] sd 18:0:0:2: [sde] Attached SCSI removable disk
Aug 31 11:57:51 merkaba kernel: [220742.336718] sd 18:0:0:3: [sdf] Attached SCSI removable disk
Aug 31 11:57:51 merkaba kernel: [220742.338992] sd 18:0:0:4: [sdg] Attached SCSI removable disk
Aug 31 11:57:51 merkaba kernel: [220742.342044]  sdd: sdd1
Aug 31 11:57:51 merkaba kernel: [220742.345003] sd 18:0:0:1: [sdd] Attached SCSI removable disk
Aug 31 11:57:53 merkaba kernel: [220744.479122] FAT-fs (sdd1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Aug 31 11:57:53 merkaba kernel: [220744.484244] FAT-fs (sdd1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
Aug 31 11:58:49 merkaba kernel: [220800.742446] mmc0: new high speed SDXC card at address 0001
Aug 31 11:58:49 merkaba kernel: [220800.743085] mmcblk0: mmc0:0001 00000 58.5 GiB 
Aug 31 11:58:49 merkaba kernel: [220800.744594]  mmcblk0: p1
Aug 31 11:59:20 merkaba kernel: [220831.145228]  mmcblk0: p1
Aug 31 11:59:24 merkaba kernel: [220835.009789] mmc0: card 0001 removed
Aug 31 11:59:25 merkaba kernel: [220836.284842] mmc0: new high speed SDXC card at address 0001
Aug 31 11:59:25 merkaba kernel: [220836.286639] mmcblk0: mmc0:0001 00000 58.5 GiB 
Aug 31 11:59:25 merkaba kernel: [220836.288585]  mmcblk0: p1
Aug 31 11:59:27 merkaba kernel: [220838.571368] mmc0: card 0001 removed
Aug 31 11:59:33 merkaba kernel: [220843.920698] mmc0: new high speed SDXC card at address 0001
Aug 31 11:59:33 merkaba kernel: [220843.921263] mmcblk0: mmc0:0001 00000 58.5 GiB 
Aug 31 11:59:33 merkaba kernel: [220843.923166]  mmcblk0: p1
Aug 31 11:59:37 merkaba kernel: [220848.007145] mmc0: card 0001 removed
Aug 31 12:00:51 merkaba kernel: [220922.230763] mmc0: new high speed SDXC card at address 0001
Aug 31 12:00:51 merkaba kernel: [220922.231236] mmcblk0: mmc0:0001 00000 58.5 GiB 
Aug 31 12:00:51 merkaba kernel: [220922.233383]  mmcblk0: p1
Aug 31 12:01:02 merkaba kernel: [220933.459915] mmc0: card 0001 removed
Aug 31 12:25:27 merkaba kernel: [222398.615363] mmc0: new high speed SDXC card at address 0001
Aug 31 12:25:27 merkaba kernel: [222398.616536] mmcblk0: mmc0:0001 00000 58.5 GiB 
Aug 31 12:25:27 merkaba kernel: [222398.618443]  mmcblk0: p1
Aug 31 12:25:36 merkaba kernel: [222407.847608] FAT-fs (mmcblk0p1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Aug 31 12:26:04 merkaba kernel: [222436.070279] Process accounting resumed
Aug 31 12:42:46 merkaba kernel: [223437.833858] mmc0: Got data interrupt 0x00100000 even though no data operation was in progress.
Aug 31 12:42:53 merkaba kernel: [223445.164431] mmc0: Timeout waiting for hardware interrupt.
Aug 31 12:42:53 merkaba kernel: [223445.164616] mmcblk0: error -110 sending stop command, original cmd response 0x900, card status 0xe00
Aug 31 12:45:23 merkaba kernel: [223594.270408] INFO: task kworker/u8:1:22926 blocked for more than 120 seconds.
Aug 31 12:45:23 merkaba kernel: [223594.270413]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:45:23 merkaba kernel: [223594.270414] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:45:23 merkaba kernel: [223594.270416] kworker/u8:1    D ffff8803586d3628     0 22926      2 0x00000000
Aug 31 12:45:23 merkaba kernel: [223594.270423] Workqueue: writeback bdi_writeback_workfn (flush-179:0)
Aug 31 12:45:23 merkaba kernel: [223594.270426]  ffff8803af307798 0000000000000002 ffff880407fc0000 ffff8803af307fd8
Aug 31 12:45:23 merkaba kernel: [223594.270428]  ffff8803586d30e0 0000000000013240 ffff8803586d30e0 ffff88041e393240
Aug 31 12:45:23 merkaba kernel: [223594.270431]  ffff880405186558 0000000000000000 ffff880405186558 ffff88014f744ea0
Aug 31 12:45:23 merkaba kernel: [223594.270433] Call Trace:
Aug 31 12:45:23 merkaba kernel: [223594.270437]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:45:23 merkaba kernel: [223594.270439]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:45:23 merkaba kernel: [223594.270443]  [<ffffffff811e163d>] get_request+0x4e0/0x561
Aug 31 12:45:23 merkaba kernel: [223594.270445]  [<ffffffff811e74f9>] ? ll_back_merge_fn+0x2d/0x89
Aug 31 12:45:23 merkaba kernel: [223594.270449]  [<ffffffff8106b727>] ? finish_wait+0x5d/0x5d
Aug 31 12:45:23 merkaba kernel: [223594.270451]  [<ffffffff811e403f>] blk_queue_bio+0x175/0x25c
Aug 31 12:45:23 merkaba kernel: [223594.270453]  [<ffffffff811e201e>] generic_make_request+0xb2/0xf9
Aug 31 12:45:23 merkaba kernel: [223594.270455]  [<ffffffff811e2165>] submit_bio+0x100/0x10b
Aug 31 12:45:23 merkaba kernel: [223594.270458]  [<ffffffff81162efc>] __mpage_writepage+0x461/0x568
Aug 31 12:45:23 merkaba kernel: [223594.270462]  [<ffffffff81215d6f>] ? __this_cpu_preempt_check+0x13/0x15
Aug 31 12:45:23 merkaba kernel: [223594.270464]  [<ffffffff8121eb63>] ? __percpu_counter_add+0x8e/0xa8
Aug 31 12:45:23 merkaba kernel: [223594.270467]  [<ffffffff810e752c>] ? __add_bdi_stat+0x2b/0x2d
Aug 31 12:45:23 merkaba kernel: [223594.270469]  [<ffffffff810e7c3d>] write_cache_pages+0x251/0x366
Aug 31 12:45:23 merkaba kernel: [223594.270471]  [<ffffffff81162a9b>] ? clean_buffers+0x57/0x57
Aug 31 12:45:23 merkaba kernel: [223594.270477]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270479]  [<ffffffff81162a05>] mpage_writepages+0x6e/0xad
Aug 31 12:45:23 merkaba kernel: [223594.270483]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270486]  [<ffffffffc080e7f6>] fat_writepages+0x10/0x12 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270489]  [<ffffffffc080e7f6>] ? fat_writepages+0x10/0x12 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270491]  [<ffffffff810e93ea>] do_writepages+0x1b/0x24
Aug 31 12:45:23 merkaba kernel: [223594.270494]  [<ffffffff81156743>] __writeback_single_inode+0x58/0x212
Aug 31 12:45:23 merkaba kernel: [223594.270496]  [<ffffffff81157645>] writeback_sb_inodes+0x1e9/0x32e
Aug 31 12:45:23 merkaba kernel: [223594.270499]  [<ffffffff81157804>] __writeback_inodes_wb+0x7a/0xb0
Aug 31 12:45:23 merkaba kernel: [223594.270501]  [<ffffffff81157950>] wb_writeback+0x116/0x270
Aug 31 12:45:23 merkaba kernel: [223594.270504]  [<ffffffff81157d3d>] bdi_writeback_workfn+0x1af/0x313
Aug 31 12:45:23 merkaba kernel: [223594.270508]  [<ffffffff81051252>] process_one_work+0x15e/0x2a7
Aug 31 12:45:23 merkaba kernel: [223594.270510]  [<ffffffff810517cf>] worker_thread+0x1f6/0x2a3
Aug 31 12:45:23 merkaba kernel: [223594.270512]  [<ffffffff810515d9>] ? rescuer_thread+0x214/0x214
Aug 31 12:45:23 merkaba kernel: [223594.270514]  [<ffffffff810551e2>] kthread+0xb2/0xba
Aug 31 12:45:23 merkaba kernel: [223594.270517]  [<ffffffff81480000>] ? dcbnl_newmsg+0x3/0xa0
Aug 31 12:45:23 merkaba kernel: [223594.270519]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:45:23 merkaba kernel: [223594.270522]  [<ffffffff8148b6ac>] ret_from_fork+0x7c/0xb0
Aug 31 12:45:23 merkaba kernel: [223594.270523]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:45:23 merkaba kernel: [223594.270526] INFO: task rsync:23096 blocked for more than 120 seconds.
Aug 31 12:45:23 merkaba kernel: [223594.270527]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:45:23 merkaba kernel: [223594.270529] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:45:23 merkaba kernel: [223594.270530] rsync           D ffff8801bbcece98     0 23096  23095 0x00000004
Aug 31 12:45:23 merkaba kernel: [223594.270532]  ffff8800c9d5f890 0000000000000002 ffff880407f64950 ffff8800c9d5ffd8
Aug 31 12:45:23 merkaba kernel: [223594.270534]  ffff8801bbcec950 0000000000013240 ffff8801bbcec950 ffff88041e293240
Aug 31 12:45:23 merkaba kernel: [223594.270536]  ffff88041e5c7550 ffff8800c9d5f940 ffffffff814887a1 0000000000000002
Aug 31 12:45:23 merkaba kernel: [223594.270539] Call Trace:
Aug 31 12:45:23 merkaba kernel: [223594.270548]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:45:23 merkaba kernel: [223594.270550]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:45:23 merkaba kernel: [223594.270552]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:45:23 merkaba kernel: [223594.270553]  [<ffffffff814887cc>] bit_wait_io+0x2b/0x37
Aug 31 12:45:23 merkaba kernel: [223594.270555]  [<ffffffff8148881e>] __wait_on_bit+0x46/0x78
Aug 31 12:45:23 merkaba kernel: [223594.270557]  [<ffffffff814888bc>] out_of_line_wait_on_bit+0x6c/0x77
Aug 31 12:45:23 merkaba kernel: [223594.270559]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:45:23 merkaba kernel: [223594.270561]  [<ffffffff8106b756>] ? autoremove_wake_function+0x2f/0x2f
Aug 31 12:45:23 merkaba kernel: [223594.270564]  [<ffffffff8115c90c>] __wait_on_buffer+0x21/0x23
Aug 31 12:45:23 merkaba kernel: [223594.270566]  [<ffffffff8115c927>] wait_on_buffer+0x19/0x1c
Aug 31 12:45:23 merkaba kernel: [223594.270568]  [<ffffffff8115d904>] __bread+0x55/0x6c
Aug 31 12:45:23 merkaba kernel: [223594.270572]  [<ffffffffc080d359>] fat_ent_bread+0x66/0xb0 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270575]  [<ffffffffc080cefd>] fat_ent_read_block+0x4d/0x56 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270578]  [<ffffffffc080d993>] fat_alloc_clusters+0x170/0x33a [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270581]  [<ffffffff8115c412>] ? recalc_bh_state+0x13/0x96
Aug 31 12:45:23 merkaba kernel: [223594.270583]  [<ffffffff8115c4f0>] ? alloc_buffer_head+0x5b/0x72
Aug 31 12:45:23 merkaba kernel: [223594.270587]  [<ffffffffc080fa97>] fat_get_block+0x139/0x1c7 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270589]  [<ffffffff8115ea45>] __block_write_begin+0x126/0x26a
Aug 31 12:45:23 merkaba kernel: [223594.270592]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270595]  [<ffffffff8115ebd0>] block_write_begin+0x47/0x71
Aug 31 12:45:23 merkaba kernel: [223594.270598]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270600]  [<ffffffff8115ede1>] cont_write_begin+0x1e7/0x1f6
Aug 31 12:45:23 merkaba kernel: [223594.270604]  [<ffffffffc080f5e4>] fat_write_begin+0x30/0x57 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270607]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:45:23 merkaba kernel: [223594.270610]  [<ffffffff810df557>] generic_perform_write+0xb0/0x189
Aug 31 12:45:23 merkaba kernel: [223594.270613]  [<ffffffff810e0f05>] __generic_file_write_iter+0x174/0x1b1
Aug 31 12:45:23 merkaba kernel: [223594.270615]  [<ffffffff810e0f7e>] generic_file_write_iter+0x3c/0xa7
Aug 31 12:45:23 merkaba kernel: [223594.270619]  [<ffffffff81135ff3>] new_sync_write+0x77/0x9b
Aug 31 12:45:23 merkaba kernel: [223594.270622]  [<ffffffff8113666a>] vfs_write+0xab/0x10d
Aug 31 12:45:23 merkaba kernel: [223594.270624]  [<ffffffff81136dc4>] SyS_write+0x48/0x73
Aug 31 12:45:23 merkaba kernel: [223594.270626]  [<ffffffff8148b94b>] tracesys+0xdd/0xe2
Aug 31 12:47:23 merkaba kernel: [223714.285623] INFO: task kworker/u8:1:22926 blocked for more than 120 seconds.
Aug 31 12:47:23 merkaba kernel: [223714.285627]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:47:23 merkaba kernel: [223714.285628] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:47:23 merkaba kernel: [223714.285630] kworker/u8:1    D ffff8803586d3628     0 22926      2 0x00000000
Aug 31 12:47:23 merkaba kernel: [223714.285645] Workqueue: writeback bdi_writeback_workfn (flush-179:0)
Aug 31 12:47:23 merkaba kernel: [223714.285648]  ffff8803af307798 0000000000000002 ffff880407fc0000 ffff8803af307fd8
Aug 31 12:47:23 merkaba kernel: [223714.285651]  ffff8803586d30e0 0000000000013240 ffff8803586d30e0 ffff88041e393240
Aug 31 12:47:23 merkaba kernel: [223714.285653]  ffff880405186558 0000000000000000 ffff880405186558 ffff88014f744ea0
Aug 31 12:47:23 merkaba kernel: [223714.285657] Call Trace:
Aug 31 12:47:23 merkaba kernel: [223714.285662]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:47:23 merkaba kernel: [223714.285666]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:47:23 merkaba kernel: [223714.285671]  [<ffffffff811e163d>] get_request+0x4e0/0x561
Aug 31 12:47:23 merkaba kernel: [223714.285675]  [<ffffffff811e74f9>] ? ll_back_merge_fn+0x2d/0x89
Aug 31 12:47:23 merkaba kernel: [223714.285680]  [<ffffffff8106b727>] ? finish_wait+0x5d/0x5d
Aug 31 12:47:23 merkaba kernel: [223714.285682]  [<ffffffff811e403f>] blk_queue_bio+0x175/0x25c
Aug 31 12:47:23 merkaba kernel: [223714.285685]  [<ffffffff811e201e>] generic_make_request+0xb2/0xf9
Aug 31 12:47:23 merkaba kernel: [223714.285687]  [<ffffffff811e2165>] submit_bio+0x100/0x10b
Aug 31 12:47:23 merkaba kernel: [223714.285691]  [<ffffffff81162efc>] __mpage_writepage+0x461/0x568
Aug 31 12:47:23 merkaba kernel: [223714.285696]  [<ffffffff81215d6f>] ? __this_cpu_preempt_check+0x13/0x15
Aug 31 12:47:23 merkaba kernel: [223714.285701]  [<ffffffff8121eb63>] ? __percpu_counter_add+0x8e/0xa8
Aug 31 12:47:23 merkaba kernel: [223714.285706]  [<ffffffff810e752c>] ? __add_bdi_stat+0x2b/0x2d
Aug 31 12:47:23 merkaba kernel: [223714.285709]  [<ffffffff810e7c3d>] write_cache_pages+0x251/0x366
Aug 31 12:47:23 merkaba kernel: [223714.285711]  [<ffffffff81162a9b>] ? clean_buffers+0x57/0x57
Aug 31 12:47:23 merkaba kernel: [223714.285718]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285720]  [<ffffffff81162a05>] mpage_writepages+0x6e/0xad
Aug 31 12:47:23 merkaba kernel: [223714.285726]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285733]  [<ffffffffc080e7f6>] fat_writepages+0x10/0x12 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285738]  [<ffffffffc080e7f6>] ? fat_writepages+0x10/0x12 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285740]  [<ffffffff810e93ea>] do_writepages+0x1b/0x24
Aug 31 12:47:23 merkaba kernel: [223714.285743]  [<ffffffff81156743>] __writeback_single_inode+0x58/0x212
Aug 31 12:47:23 merkaba kernel: [223714.285746]  [<ffffffff81157645>] writeback_sb_inodes+0x1e9/0x32e
Aug 31 12:47:23 merkaba kernel: [223714.285749]  [<ffffffff81157804>] __writeback_inodes_wb+0x7a/0xb0
Aug 31 12:47:23 merkaba kernel: [223714.285755]  [<ffffffff81157950>] wb_writeback+0x116/0x270
Aug 31 12:47:23 merkaba kernel: [223714.285758]  [<ffffffff81157d3d>] bdi_writeback_workfn+0x1af/0x313
Aug 31 12:47:23 merkaba kernel: [223714.285764]  [<ffffffff81051252>] process_one_work+0x15e/0x2a7
Aug 31 12:47:23 merkaba kernel: [223714.285768]  [<ffffffff810517cf>] worker_thread+0x1f6/0x2a3
Aug 31 12:47:23 merkaba kernel: [223714.285771]  [<ffffffff810515d9>] ? rescuer_thread+0x214/0x214
Aug 31 12:47:23 merkaba kernel: [223714.285773]  [<ffffffff810551e2>] kthread+0xb2/0xba
Aug 31 12:47:23 merkaba kernel: [223714.285775]  [<ffffffff81480000>] ? dcbnl_newmsg+0x3/0xa0
Aug 31 12:47:23 merkaba kernel: [223714.285777]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:47:23 merkaba kernel: [223714.285781]  [<ffffffff8148b6ac>] ret_from_fork+0x7c/0xb0
Aug 31 12:47:23 merkaba kernel: [223714.285784]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:47:23 merkaba kernel: [223714.285790] INFO: task rsync:23096 blocked for more than 120 seconds.
Aug 31 12:47:23 merkaba kernel: [223714.285792]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:47:23 merkaba kernel: [223714.285795] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:47:23 merkaba kernel: [223714.285797] rsync           D ffff8801bbcece98     0 23096  23095 0x00000004
Aug 31 12:47:23 merkaba kernel: [223714.285800]  ffff8800c9d5f890 0000000000000002 ffff880407f64950 ffff8800c9d5ffd8
Aug 31 12:47:23 merkaba kernel: [223714.285803]  ffff8801bbcec950 0000000000013240 ffff8801bbcec950 ffff88041e293240
Aug 31 12:47:23 merkaba kernel: [223714.285805]  ffff88041e5c7550 ffff8800c9d5f940 ffffffff814887a1 0000000000000002
Aug 31 12:47:23 merkaba kernel: [223714.285807] Call Trace:
Aug 31 12:47:23 merkaba kernel: [223714.285810]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:47:23 merkaba kernel: [223714.285812]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:47:23 merkaba kernel: [223714.285815]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:47:23 merkaba kernel: [223714.285818]  [<ffffffff814887cc>] bit_wait_io+0x2b/0x37
Aug 31 12:47:23 merkaba kernel: [223714.285822]  [<ffffffff8148881e>] __wait_on_bit+0x46/0x78
Aug 31 12:47:23 merkaba kernel: [223714.285826]  [<ffffffff814888bc>] out_of_line_wait_on_bit+0x6c/0x77
Aug 31 12:47:23 merkaba kernel: [223714.285829]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:47:23 merkaba kernel: [223714.285831]  [<ffffffff8106b756>] ? autoremove_wake_function+0x2f/0x2f
Aug 31 12:47:23 merkaba kernel: [223714.285834]  [<ffffffff8115c90c>] __wait_on_buffer+0x21/0x23
Aug 31 12:47:23 merkaba kernel: [223714.285837]  [<ffffffff8115c927>] wait_on_buffer+0x19/0x1c
Aug 31 12:47:23 merkaba kernel: [223714.285839]  [<ffffffff8115d904>] __bread+0x55/0x6c
Aug 31 12:47:23 merkaba kernel: [223714.285844]  [<ffffffffc080d359>] fat_ent_bread+0x66/0xb0 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285850]  [<ffffffffc080cefd>] fat_ent_read_block+0x4d/0x56 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285856]  [<ffffffffc080d993>] fat_alloc_clusters+0x170/0x33a [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285860]  [<ffffffff8115c412>] ? recalc_bh_state+0x13/0x96
Aug 31 12:47:23 merkaba kernel: [223714.285862]  [<ffffffff8115c4f0>] ? alloc_buffer_head+0x5b/0x72
Aug 31 12:47:23 merkaba kernel: [223714.285866]  [<ffffffffc080fa97>] fat_get_block+0x139/0x1c7 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285869]  [<ffffffff8115ea45>] __block_write_begin+0x126/0x26a
Aug 31 12:47:23 merkaba kernel: [223714.285872]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285877]  [<ffffffff8115ebd0>] block_write_begin+0x47/0x71
Aug 31 12:47:23 merkaba kernel: [223714.285881]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285886]  [<ffffffff8115ede1>] cont_write_begin+0x1e7/0x1f6
Aug 31 12:47:23 merkaba kernel: [223714.285891]  [<ffffffffc080f5e4>] fat_write_begin+0x30/0x57 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285894]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:47:23 merkaba kernel: [223714.285897]  [<ffffffff810df557>] generic_perform_write+0xb0/0x189
Aug 31 12:47:23 merkaba kernel: [223714.285901]  [<ffffffff810e0f05>] __generic_file_write_iter+0x174/0x1b1
Aug 31 12:47:23 merkaba kernel: [223714.285906]  [<ffffffff810e0f7e>] generic_file_write_iter+0x3c/0xa7
Aug 31 12:47:23 merkaba kernel: [223714.285911]  [<ffffffff81135ff3>] new_sync_write+0x77/0x9b
Aug 31 12:47:23 merkaba kernel: [223714.285916]  [<ffffffff8113666a>] vfs_write+0xab/0x10d
Aug 31 12:47:23 merkaba kernel: [223714.285919]  [<ffffffff81136dc4>] SyS_write+0x48/0x73
Aug 31 12:47:23 merkaba kernel: [223714.285922]  [<ffffffff8148b94b>] tracesys+0xdd/0xe2
Aug 31 12:49:23 merkaba kernel: [223834.300830] INFO: task kworker/u8:1:22926 blocked for more than 120 seconds.
Aug 31 12:49:23 merkaba kernel: [223834.300836]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:49:23 merkaba kernel: [223834.300840] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:49:23 merkaba kernel: [223834.300841] kworker/u8:1    D ffff8803586d3628     0 22926      2 0x00000000
Aug 31 12:49:23 merkaba kernel: [223834.300854] Workqueue: writeback bdi_writeback_workfn (flush-179:0)
Aug 31 12:49:23 merkaba kernel: [223834.300857]  ffff8803af307798 0000000000000002 ffff880407fc0000 ffff8803af307fd8
Aug 31 12:49:23 merkaba kernel: [223834.300860]  ffff8803586d30e0 0000000000013240 ffff8803586d30e0 ffff88041e393240
Aug 31 12:49:23 merkaba kernel: [223834.300863]  ffff880405186558 0000000000000000 ffff880405186558 ffff88014f744ea0
Aug 31 12:49:23 merkaba kernel: [223834.300867] Call Trace:
Aug 31 12:49:23 merkaba kernel: [223834.300874]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:49:23 merkaba kernel: [223834.300880]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:49:23 merkaba kernel: [223834.300884]  [<ffffffff811e163d>] get_request+0x4e0/0x561
Aug 31 12:49:23 merkaba kernel: [223834.300887]  [<ffffffff811e74f9>] ? ll_back_merge_fn+0x2d/0x89
Aug 31 12:49:23 merkaba kernel: [223834.300891]  [<ffffffff8106b727>] ? finish_wait+0x5d/0x5d
Aug 31 12:49:23 merkaba kernel: [223834.300894]  [<ffffffff811e403f>] blk_queue_bio+0x175/0x25c
Aug 31 12:49:23 merkaba kernel: [223834.300898]  [<ffffffff811e201e>] generic_make_request+0xb2/0xf9
Aug 31 12:49:23 merkaba kernel: [223834.300901]  [<ffffffff811e2165>] submit_bio+0x100/0x10b
Aug 31 12:49:23 merkaba kernel: [223834.300905]  [<ffffffff81162efc>] __mpage_writepage+0x461/0x568
Aug 31 12:49:23 merkaba kernel: [223834.300912]  [<ffffffff81215d6f>] ? __this_cpu_preempt_check+0x13/0x15
Aug 31 12:49:23 merkaba kernel: [223834.300915]  [<ffffffff8121eb63>] ? __percpu_counter_add+0x8e/0xa8
Aug 31 12:49:23 merkaba kernel: [223834.300919]  [<ffffffff810e752c>] ? __add_bdi_stat+0x2b/0x2d
Aug 31 12:49:23 merkaba kernel: [223834.300921]  [<ffffffff810e7c3d>] write_cache_pages+0x251/0x366
Aug 31 12:49:23 merkaba kernel: [223834.300923]  [<ffffffff81162a9b>] ? clean_buffers+0x57/0x57
Aug 31 12:49:23 merkaba kernel: [223834.300932]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.300936]  [<ffffffff81162a05>] mpage_writepages+0x6e/0xad
Aug 31 12:49:23 merkaba kernel: [223834.300943]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.300948]  [<ffffffffc080e7f6>] fat_writepages+0x10/0x12 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.300951]  [<ffffffffc080e7f6>] ? fat_writepages+0x10/0x12 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.300954]  [<ffffffff810e93ea>] do_writepages+0x1b/0x24
Aug 31 12:49:23 merkaba kernel: [223834.300957]  [<ffffffff81156743>] __writeback_single_inode+0x58/0x212
Aug 31 12:49:23 merkaba kernel: [223834.300962]  [<ffffffff81157645>] writeback_sb_inodes+0x1e9/0x32e
Aug 31 12:49:23 merkaba kernel: [223834.300968]  [<ffffffff81157804>] __writeback_inodes_wb+0x7a/0xb0
Aug 31 12:49:23 merkaba kernel: [223834.300974]  [<ffffffff81157950>] wb_writeback+0x116/0x270
Aug 31 12:49:23 merkaba kernel: [223834.300978]  [<ffffffff81157d3d>] bdi_writeback_workfn+0x1af/0x313
Aug 31 12:49:23 merkaba kernel: [223834.300981]  [<ffffffff81051252>] process_one_work+0x15e/0x2a7
Aug 31 12:49:23 merkaba kernel: [223834.300984]  [<ffffffff810517cf>] worker_thread+0x1f6/0x2a3
Aug 31 12:49:23 merkaba kernel: [223834.300986]  [<ffffffff810515d9>] ? rescuer_thread+0x214/0x214
Aug 31 12:49:23 merkaba kernel: [223834.300989]  [<ffffffff810551e2>] kthread+0xb2/0xba
Aug 31 12:49:23 merkaba kernel: [223834.300994]  [<ffffffff81480000>] ? dcbnl_newmsg+0x3/0xa0
Aug 31 12:49:23 merkaba kernel: [223834.300997]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:49:23 merkaba kernel: [223834.301002]  [<ffffffff8148b6ac>] ret_from_fork+0x7c/0xb0
Aug 31 12:49:23 merkaba kernel: [223834.301005]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:49:23 merkaba kernel: [223834.301010] INFO: task rsync:23096 blocked for more than 120 seconds.
Aug 31 12:49:23 merkaba kernel: [223834.301011]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:49:23 merkaba kernel: [223834.301013] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:49:23 merkaba kernel: [223834.301014] rsync           D ffff8801bbcece98     0 23096  23095 0x00000004
Aug 31 12:49:23 merkaba kernel: [223834.301017]  ffff8800c9d5f890 0000000000000002 ffff880407f64950 ffff8800c9d5ffd8
Aug 31 12:49:23 merkaba kernel: [223834.301019]  ffff8801bbcec950 0000000000013240 ffff8801bbcec950 ffff88041e293240
Aug 31 12:49:23 merkaba kernel: [223834.301023]  ffff88041e5c7550 ffff8800c9d5f940 ffffffff814887a1 0000000000000002
Aug 31 12:49:23 merkaba kernel: [223834.301027] Call Trace:
Aug 31 12:49:23 merkaba kernel: [223834.301033]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:49:23 merkaba kernel: [223834.301036]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:49:23 merkaba kernel: [223834.301039]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:49:23 merkaba kernel: [223834.301041]  [<ffffffff814887cc>] bit_wait_io+0x2b/0x37
Aug 31 12:49:23 merkaba kernel: [223834.301043]  [<ffffffff8148881e>] __wait_on_bit+0x46/0x78
Aug 31 12:49:23 merkaba kernel: [223834.301045]  [<ffffffff814888bc>] out_of_line_wait_on_bit+0x6c/0x77
Aug 31 12:49:23 merkaba kernel: [223834.301047]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:49:23 merkaba kernel: [223834.301050]  [<ffffffff8106b756>] ? autoremove_wake_function+0x2f/0x2f
Aug 31 12:49:23 merkaba kernel: [223834.301054]  [<ffffffff8115c90c>] __wait_on_buffer+0x21/0x23
Aug 31 12:49:23 merkaba kernel: [223834.301058]  [<ffffffff8115c927>] wait_on_buffer+0x19/0x1c
Aug 31 12:49:23 merkaba kernel: [223834.301061]  [<ffffffff8115d904>] __bread+0x55/0x6c
Aug 31 12:49:23 merkaba kernel: [223834.301067]  [<ffffffffc080d359>] fat_ent_bread+0x66/0xb0 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301072]  [<ffffffffc080cefd>] fat_ent_read_block+0x4d/0x56 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301076]  [<ffffffffc080d993>] fat_alloc_clusters+0x170/0x33a [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301079]  [<ffffffff8115c412>] ? recalc_bh_state+0x13/0x96
Aug 31 12:49:23 merkaba kernel: [223834.301082]  [<ffffffff8115c4f0>] ? alloc_buffer_head+0x5b/0x72
Aug 31 12:49:23 merkaba kernel: [223834.301088]  [<ffffffffc080fa97>] fat_get_block+0x139/0x1c7 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301092]  [<ffffffff8115ea45>] __block_write_begin+0x126/0x26a
Aug 31 12:49:23 merkaba kernel: [223834.301101]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301104]  [<ffffffff8115ebd0>] block_write_begin+0x47/0x71
Aug 31 12:49:23 merkaba kernel: [223834.301107]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301110]  [<ffffffff8115ede1>] cont_write_begin+0x1e7/0x1f6
Aug 31 12:49:23 merkaba kernel: [223834.301115]  [<ffffffffc080f5e4>] fat_write_begin+0x30/0x57 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301120]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:49:23 merkaba kernel: [223834.301128]  [<ffffffff810df557>] generic_perform_write+0xb0/0x189
Aug 31 12:49:23 merkaba kernel: [223834.301132]  [<ffffffff810e0f05>] __generic_file_write_iter+0x174/0x1b1
Aug 31 12:49:23 merkaba kernel: [223834.301135]  [<ffffffff810e0f7e>] generic_file_write_iter+0x3c/0xa7
Aug 31 12:49:23 merkaba kernel: [223834.301138]  [<ffffffff81135ff3>] new_sync_write+0x77/0x9b
Aug 31 12:49:23 merkaba kernel: [223834.301142]  [<ffffffff8113666a>] vfs_write+0xab/0x10d
Aug 31 12:49:23 merkaba kernel: [223834.301144]  [<ffffffff81136dc4>] SyS_write+0x48/0x73
Aug 31 12:49:23 merkaba kernel: [223834.301147]  [<ffffffff8148b94b>] tracesys+0xdd/0xe2
Aug 31 12:49:25 merkaba kernel: [223836.678440] Process accounting resumed
Aug 31 12:50:06 merkaba kernel: [223877.992999] Process accounting resumed
Aug 31 12:51:23 merkaba kernel: [223954.316040] INFO: task kworker/u8:1:22926 blocked for more than 120 seconds.
Aug 31 12:51:23 merkaba kernel: [223954.316045]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:51:23 merkaba kernel: [223954.316048] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:51:23 merkaba kernel: [223954.316051] kworker/u8:1    D ffff8803586d3628     0 22926      2 0x00000000
Aug 31 12:51:23 merkaba kernel: [223954.316061] Workqueue: writeback bdi_writeback_workfn (flush-179:0)
Aug 31 12:51:23 merkaba kernel: [223954.316064]  ffff8803af307798 0000000000000002 ffff880407fc0000 ffff8803af307fd8
Aug 31 12:51:23 merkaba kernel: [223954.316067]  ffff8803586d30e0 0000000000013240 ffff8803586d30e0 ffff88041e393240
Aug 31 12:51:23 merkaba kernel: [223954.316070]  ffff880405186558 0000000000000000 ffff880405186558 ffff88014f744ea0
Aug 31 12:51:23 merkaba kernel: [223954.316075] Call Trace:
Aug 31 12:51:23 merkaba kernel: [223954.316083]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:51:23 merkaba kernel: [223954.316087]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:51:23 merkaba kernel: [223954.316090]  [<ffffffff811e163d>] get_request+0x4e0/0x561
Aug 31 12:51:23 merkaba kernel: [223954.316093]  [<ffffffff811e74f9>] ? ll_back_merge_fn+0x2d/0x89
Aug 31 12:51:23 merkaba kernel: [223954.316097]  [<ffffffff8106b727>] ? finish_wait+0x5d/0x5d
Aug 31 12:51:23 merkaba kernel: [223954.316100]  [<ffffffff811e403f>] blk_queue_bio+0x175/0x25c
Aug 31 12:51:23 merkaba kernel: [223954.316104]  [<ffffffff811e201e>] generic_make_request+0xb2/0xf9
Aug 31 12:51:23 merkaba kernel: [223954.316107]  [<ffffffff811e2165>] submit_bio+0x100/0x10b
Aug 31 12:51:23 merkaba kernel: [223954.316113]  [<ffffffff81162efc>] __mpage_writepage+0x461/0x568
Aug 31 12:51:23 merkaba kernel: [223954.316119]  [<ffffffff81215d6f>] ? __this_cpu_preempt_check+0x13/0x15
Aug 31 12:51:23 merkaba kernel: [223954.316122]  [<ffffffff8121eb63>] ? __percpu_counter_add+0x8e/0xa8
Aug 31 12:51:23 merkaba kernel: [223954.316125]  [<ffffffff810e752c>] ? __add_bdi_stat+0x2b/0x2d
Aug 31 12:51:23 merkaba kernel: [223954.316128]  [<ffffffff810e7c3d>] write_cache_pages+0x251/0x366
Aug 31 12:51:23 merkaba kernel: [223954.316131]  [<ffffffff81162a9b>] ? clean_buffers+0x57/0x57
Aug 31 12:51:23 merkaba kernel: [223954.316142]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316146]  [<ffffffff81162a05>] mpage_writepages+0x6e/0xad
Aug 31 12:51:23 merkaba kernel: [223954.316150]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316154]  [<ffffffffc080e7f6>] fat_writepages+0x10/0x12 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316157]  [<ffffffffc080e7f6>] ? fat_writepages+0x10/0x12 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316160]  [<ffffffff810e93ea>] do_writepages+0x1b/0x24
Aug 31 12:51:23 merkaba kernel: [223954.316165]  [<ffffffff81156743>] __writeback_single_inode+0x58/0x212
Aug 31 12:51:23 merkaba kernel: [223954.316170]  [<ffffffff81157645>] writeback_sb_inodes+0x1e9/0x32e
Aug 31 12:51:23 merkaba kernel: [223954.316175]  [<ffffffff81157804>] __writeback_inodes_wb+0x7a/0xb0
Aug 31 12:51:23 merkaba kernel: [223954.316178]  [<ffffffff81157950>] wb_writeback+0x116/0x270
Aug 31 12:51:23 merkaba kernel: [223954.316181]  [<ffffffff81157d3d>] bdi_writeback_workfn+0x1af/0x313
Aug 31 12:51:23 merkaba kernel: [223954.316185]  [<ffffffff81051252>] process_one_work+0x15e/0x2a7
Aug 31 12:51:23 merkaba kernel: [223954.316187]  [<ffffffff810517cf>] worker_thread+0x1f6/0x2a3
Aug 31 12:51:23 merkaba kernel: [223954.316191]  [<ffffffff810515d9>] ? rescuer_thread+0x214/0x214
Aug 31 12:51:23 merkaba kernel: [223954.316195]  [<ffffffff810551e2>] kthread+0xb2/0xba
Aug 31 12:51:23 merkaba kernel: [223954.316199]  [<ffffffff81480000>] ? dcbnl_newmsg+0x3/0xa0
Aug 31 12:51:23 merkaba kernel: [223954.316203]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:51:23 merkaba kernel: [223954.316208]  [<ffffffff8148b6ac>] ret_from_fork+0x7c/0xb0
Aug 31 12:51:23 merkaba kernel: [223954.316210]  [<ffffffff81055130>] ? __kthread_parkme+0x62/0x62
Aug 31 12:51:23 merkaba kernel: [223954.316213] INFO: task rsync:23096 blocked for more than 120 seconds.
Aug 31 12:51:23 merkaba kernel: [223954.316215]       Tainted: G        W  O   3.17.0-rc2-tp520-fixcompwritehang+ #2
Aug 31 12:51:23 merkaba kernel: [223954.316216] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 31 12:51:23 merkaba kernel: [223954.316217] rsync           D ffff8801bbcece98     0 23096  23095 0x00000004
Aug 31 12:51:23 merkaba kernel: [223954.316221]  ffff8800c9d5f890 0000000000000002 ffff880407f64950 ffff8800c9d5ffd8
Aug 31 12:51:23 merkaba kernel: [223954.316226]  ffff8801bbcec950 0000000000013240 ffff8801bbcec950 ffff88041e293240
Aug 31 12:51:23 merkaba kernel: [223954.316230]  ffff88041e5c7550 ffff8800c9d5f940 ffffffff814887a1 0000000000000002
Aug 31 12:51:23 merkaba kernel: [223954.316236] Call Trace:
Aug 31 12:51:23 merkaba kernel: [223954.316238]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:51:23 merkaba kernel: [223954.316240]  [<ffffffff81488352>] schedule+0x64/0x66
Aug 31 12:51:23 merkaba kernel: [223954.316242]  [<ffffffff814884d6>] io_schedule+0x57/0x76
Aug 31 12:51:23 merkaba kernel: [223954.316243]  [<ffffffff814887cc>] bit_wait_io+0x2b/0x37
Aug 31 12:51:23 merkaba kernel: [223954.316245]  [<ffffffff8148881e>] __wait_on_bit+0x46/0x78
Aug 31 12:51:23 merkaba kernel: [223954.316248]  [<ffffffff814888bc>] out_of_line_wait_on_bit+0x6c/0x77
Aug 31 12:51:23 merkaba kernel: [223954.316251]  [<ffffffff814887a1>] ? bit_wait+0x37/0x37
Aug 31 12:51:23 merkaba kernel: [223954.316255]  [<ffffffff8106b756>] ? autoremove_wake_function+0x2f/0x2f
Aug 31 12:51:23 merkaba kernel: [223954.316262]  [<ffffffff8115c90c>] __wait_on_buffer+0x21/0x23
Aug 31 12:51:23 merkaba kernel: [223954.316266]  [<ffffffff8115c927>] wait_on_buffer+0x19/0x1c
Aug 31 12:51:23 merkaba kernel: [223954.316269]  [<ffffffff8115d904>] __bread+0x55/0x6c
Aug 31 12:51:23 merkaba kernel: [223954.316272]  [<ffffffffc080d359>] fat_ent_bread+0x66/0xb0 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316276]  [<ffffffffc080cefd>] fat_ent_read_block+0x4d/0x56 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316280]  [<ffffffffc080d993>] fat_alloc_clusters+0x170/0x33a [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316285]  [<ffffffff8115c412>] ? recalc_bh_state+0x13/0x96
Aug 31 12:51:23 merkaba kernel: [223954.316290]  [<ffffffff8115c4f0>] ? alloc_buffer_head+0x5b/0x72
Aug 31 12:51:23 merkaba kernel: [223954.316296]  [<ffffffffc080fa97>] fat_get_block+0x139/0x1c7 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316299]  [<ffffffff8115ea45>] __block_write_begin+0x126/0x26a
Aug 31 12:51:23 merkaba kernel: [223954.316303]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316306]  [<ffffffff8115ebd0>] block_write_begin+0x47/0x71
Aug 31 12:51:23 merkaba kernel: [223954.316309]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316314]  [<ffffffff8115ede1>] cont_write_begin+0x1e7/0x1f6
Aug 31 12:51:23 merkaba kernel: [223954.316320]  [<ffffffffc080f5e4>] fat_write_begin+0x30/0x57 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316326]  [<ffffffffc080f95e>] ? fat_attach+0xe3/0xe3 [fat]
Aug 31 12:51:23 merkaba kernel: [223954.316329]  [<ffffffff810df557>] generic_perform_write+0xb0/0x189
Aug 31 12:51:23 merkaba kernel: [223954.316333]  [<ffffffff810e0f05>] __generic_file_write_iter+0x174/0x1b1
Aug 31 12:51:23 merkaba kernel: [223954.316336]  [<ffffffff810e0f7e>] generic_file_write_iter+0x3c/0xa7
Aug 31 12:51:23 merkaba kernel: [223954.316342]  [<ffffffff81135ff3>] new_sync_write+0x77/0x9b
Aug 31 12:51:23 merkaba kernel: [223954.316347]  [<ffffffff8113666a>] vfs_write+0xab/0x10d
Aug 31 12:51:23 merkaba kernel: [223954.316353]  [<ffffffff81136dc4>] SyS_write+0x48/0x73
Aug 31 12:51:23 merkaba kernel: [223954.316356]  [<ffffffff8148b94b>] tracesys+0xdd/0xe2
Aug 31 12:52:53 merkaba kernel: [224045.241525] mmc0: Card stuck in programming state! mmcblk0 card_busy_detect
Aug 31 12:52:53 merkaba kernel: [224045.241606] blk_update_request: 152 callbacks suppressed
Aug 31 12:52:53 merkaba kernel: [224045.241608] end_request: I/O error, dev mmcblk0, sector 14220786
Aug 31 12:52:53 merkaba kernel: [224045.241612] end_request: I/O error, dev mmcblk0, sector 14220794
Aug 31 12:52:53 merkaba kernel: [224045.241614] end_request: I/O error, dev mmcblk0, sector 14220802
Aug 31 12:52:53 merkaba kernel: [224045.241616] end_request: I/O error, dev mmcblk0, sector 14220810
Aug 31 12:52:53 merkaba kernel: [224045.241617] end_request: I/O error, dev mmcblk0, sector 14220818
Aug 31 12:52:53 merkaba kernel: [224045.241619] end_request: I/O error, dev mmcblk0, sector 14220826
Aug 31 12:52:53 merkaba kernel: [224045.241620] end_request: I/O error, dev mmcblk0, sector 14220834
Aug 31 12:52:53 merkaba kernel: [224045.241622] end_request: I/O error, dev mmcblk0, sector 14220842
Aug 31 12:52:53 merkaba kernel: [224045.241623] end_request: I/O error, dev mmcblk0, sector 14220850
Aug 31 12:52:53 merkaba kernel: [224045.241625] end_request: I/O error, dev mmcblk0, sector 14220858
Aug 31 12:52:53 merkaba kernel: [224045.251745] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:53 merkaba kernel: [224045.251828] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:53 merkaba kernel: [224045.251863] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.261973] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:53 merkaba kernel: [224045.262057] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:53 merkaba kernel: [224045.262094] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.272221] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:53 merkaba kernel: [224045.272310] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:53 merkaba kernel: [224045.272347] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.282466] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:53 merkaba kernel: [224045.282555] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:53 merkaba kernel: [224045.282591] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.292712] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:53 merkaba kernel: [224045.292812] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:53 merkaba kernel: [224045.292848] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.302966] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:53 merkaba kernel: [224045.303049] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:53 merkaba kernel: [224045.303084] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.303186] mmcblk0: timed out sending r/w cmd command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.303263] mmcblk0: timed out sending r/w cmd command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.303341] mmcblk0: timed out sending r/w cmd command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.303418] mmcblk0: timed out sending r/w cmd command, card status 0x400e00
Aug 31 12:52:53 merkaba kernel: [224045.303497] mmcblk0: timed out sending r/w cmd command, card status 0x400e00
Aug 31 12:52:54 merkaba kernel: [224045.303583] mmcblk0: timed out sending r/w cmd command, card status 0x400e00
Aug 31 12:52:54 merkaba kernel: [224045.303596] FAT-fs (mmcblk0p1): FAT read failed (blocknr 1764)
Aug 31 12:52:54 merkaba kernel: [224045.313798] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:54 merkaba kernel: [224045.313941] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:54 merkaba kernel: [224045.313984] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:54 merkaba kernel: [224045.324094] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:54 merkaba kernel: [224045.324186] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:54 merkaba kernel: [224045.324220] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00
Aug 31 12:52:54 merkaba kernel: [224045.334337] mmc0: Controller never released inhibit bit(s).
Aug 31 12:52:54 merkaba kernel: [224045.334441] mmcblk0: error -5 sending status command, retrying
Aug 31 12:52:54 merkaba kernel: [224045.334485] mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400e00

[a tone more of these]

I will attach kern.log excerpt as it may be that bugzilla wordwraps
these lines.

Reader is Digisol 5 in 1 card reader which seems to be based on Transcend stuff:

merkaba:~> lsusb | grep Transcend
Bus 002 Device 007: ID 1307:0330 Transcend Information, Inc. 63-in-1 Multi-Card Reader/Writer

and has 

Samsung MB-MPBGC (I think), a 32 GB MicroSDHC card which I think does USH-I as well equipped.

Writer is internal SD card slot in ThinkPad T520:

merkaba:~> lspci -nn | grep MMC  
0d:00.0 System peripheral [0880]: Ricoh Co Ltd MMC/SD Host Controller [1180:e822] (rev 08)

and has

Samsung Memory MB-MP64D 64GB EVO MicroSDXC UHS-I Grade Class 10 MicroSDXC

equipped.

The card readers may or may not be capable to use UHS-1. I bet they are not,
at least the ThinkPad T520 one

Both cards use manufacturer partitioning. The 64 GB one I have reformatted
from ExFAT to FAT32 with default settings.


I think I will try rsync with reduced bandwidth or copy temporarily to
SSD or harddisk, although I need to think where to stuff these 32 GiB
temporarily.

Thanks,
Martin

Comment 1 Martin Steigerwald 2014-08-31 11:18:54 UTC

Before this happened I also experienced this:

Bug 83561 - Suboptimal chainsaw behavior in copying between to SD cards

Comment 2 Martin Steigerwald 2014-08-31 11:22:40 UTC

Created attachment 148881 [details]
kern.log while this happened

I truncated it to the time span where this happened.

Comment 3 Martin Steigerwald 2014-08-31 13:53:37 UTC

With

merkaba:~> rsync -aP --bwlimit 5000 /media/martin/MUSIK1/ /media/martin/MUSIK/

the data transfer completed without any further errors in dmesg / kern.log.

So probably this only happens on massive data transfers filling buffers and queues completely.

Comment 4 Martin Steigerwald 2018-05-11 08:47:50 UTC

I did not see any errors like that in a long time. Closing.

Comment 5 Martin Steigerwald 2018-05-11 08:51:03 UTC

Previously there was a state like WORKSFORME. Now there is only CODE_FIX and UNREPRODUCIBLE. I am not sure whether the code has been fixed and if so by what commit. Also initially it was reproducible.

Thus reopening again. Feel free to close it with the proper flag. I don´t know what it would be.

I did not see the erroneous behavior since years actually, but it has been there initially. It might have been that the code has been fixed, but it might also have any other cause that this did not reappear.