Comment 26 for bug 1259829

Saw something interesting with 3.13 daily build kernel
Linux K43SA 3.13.0-999-generic #201312200414 SMP Fri Dec 20 09:16:44 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

[ 17.017210] psmouse serio4: elantech: assuming hardware version 3 (with firmware version 0x450f01)
[ 17.029210] psmouse serio4: elantech: Synaptics capabilities query result 0x78, 0x15, 0x0c.
[ 17.088588] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio4/input/input12
[ 18.284033] ata1: log page 10h reported inactive tag 0
[ 18.284039] ata1.00: exception Emask 0x1 SAct 0x30 SErr 0x0 action 0x0
[ 18.284040] ata1.00: irq_stat 0x40000008
[ 18.284042] ata1.00: failed command: READ FPDMA QUEUED
[ 18.284046] ata1.00: cmd 60/08:20:00:00:db/00:00:0b:00:00/40 tag 4 ncq 4096 in
[ 18.284046] res 40/00:2c:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error)
[ 18.284048] ata1.00: status: { DRDY }
[ 18.284050] ata1.00: failed command: SEND FPDMA QUEUED
[ 18.284053] ata1.00: cmd 64/01:28:00:00:00/00:00:00:00:00/a0 tag 5 ncq 512 out
[ 18.284053] res 40/00:2c:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error)
[ 18.284054] ata1.00: status: { DRDY }
[ 18.284292] ata1.00: supports DRM functions and may not be fully accessible
[ 18.290634] ata1.00: supports DRM functions and may not be fully accessible
[ 18.296726] ata1.00: configured for UDMA/133
[ 18.296729] ata1.00: device reported invalid CHS sector 0
[ 18.296735] sd 0:0:0:0: [sda]
[ 18.296737] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 18.296738] sd 0:0:0:0: [sda]
[ 18.296739] Sense Key : Aborted Command [current] [descriptor]
[ 18.296742] Descriptor sense data with sense descriptors (in hex):
[ 18.296743] 72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00
[ 18.296749] 00 00 00 00
[ 18.296751] sd 0:0:0:0: [sda]
[ 18.296753] Add. Sense: No additional sense information
[ 18.296762] sd 0:0:0:0: [sda] CDB:
[ 18.296763] Write same(16): 93 08 00 00 00 00 00 1b 36 00 00 00 00 b0 00 00
[ 18.296770] end_request: I/O error, dev sda, sector 1783296
[ 18.296777] EXT4-fs (dm-1): discard request in group:1 block:1984 count:22 failed with -5
[ 18.296778] ata1: EH complete
[ 18.667971] wlan0: authenticate with 00:1b:57:ba:8a:a5