I have similar errors occasionally in dmesg with my WD drive (AHCI
enabled in bios). Enrico Sardi's workaround works (it seems to reduce
disk performance tho :().
Nov 21 11:56:34 msi1719 kernel: [ 242.945605] ata1.00: exception Emask 0x2
SAct 0x7f87d SErr 0x0 action 0x2 frozen
Nov 21 11:56:34 msi1719 kernel: [ 242.945617] ata1.00: (spurious completions
during NCQ issue=0x0 SAct=0x7f87d FIS=004040a1:00000400)
Nov 21 11:56:34 msi1719 kernel: [ 242.945631] ata1.00: cmd
61/08:00:9f:a6:b7/00:00:03:00:00/40 tag 0 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945634] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945647] ata1.00: cmd
61/10:10:6f:a7:b7/00:00:03:00:00/40 tag 2 cdb 0x0 data 8192 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945650] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945662] ata1.00: cmd
61/10:18:af:a7:b7/00:00:03:00:00/40 tag 3 cdb 0x0 data 8192 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945666] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945677] ata1.00: cmd
61/08:20:f7:a7:b7/00:00:03:00:00/40 tag 4 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945681] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945693] ata1.00: cmd
61/08:28:17:a8:b7/00:00:03:00:00/40 tag 5 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945696] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945708] ata1.00: cmd
61/08:30:df:a5:b7/00:00:03:00:00/40 tag 6 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945711] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945723] ata1.00: cmd
61/08:58:7f:a8:b7/00:00:03:00:00/40 tag 11 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945727] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945739] ata1.00: cmd
61/08:60:9f:a8:b7/00:00:03:00:00/40 tag 12 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945742] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945754] ata1.00: cmd
61/10:68:df:a6:b7/00:00:03:00:00/40 tag 13 cdb 0x0 data 8192 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945758] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945769] ata1.00: cmd
61/08:70:0f:a7:b7/00:00:03:00:00/40 tag 14 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945773] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945785] ata1.00: cmd
61/10:78:3f:a7:b7/00:00:03:00:00/40 tag 15 cdb 0x0 data 8192 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945788] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945800] ata1.00: cmd
61/08:80:27:a6:b7/00:00:03:00:00/40 tag 16 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945804] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945815] ata1.00: cmd
61/08:88:37:a6:b7/00:00:03:00:00/40 tag 17 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945819] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 242.945831] ata1.00: cmd
61/08:90:6f:a6:b7/00:00:03:00:00/40 tag 18 cdb 0x0 data 4096 out
Nov 21 11:56:34 msi1719 kernel: [ 242.945834] res
40/00:94:6f:a6:b7/00:00:03:00:00/40 Emask 0x2 (HSM violation)
Nov 21 11:56:34 msi1719 kernel: [ 243.143849] ata1: soft resetting port
Nov 21 11:56:34 msi1719 kernel: [ 243.272346] ata1: SATA link up 1.5 Gbps
(SStatus 113 SControl 300)
Nov 21 11:56:34 msi1719 kernel: [ 243.315898] ata1.00: configured for UDMA/133
Nov 21 11:56:34 msi1719 kernel: [ 243.315950] ata1: EH complete
Computer: MSI GX700PX
ATA device, with non-removable media
Model Number: WDC WD2500BEVS-22UST0
Firmware Revision: 01.01A0
--
spurious completions during NCQ Hitachi HTS722016K9A300
https://bugs.launchpad.net/bugs/137470
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