Mark Lord pisze:

Looks like a bad sector in the swap partition.
You can probably repair it by using this sequence of commands:

swapoff /dev/sdX    <--- replace sdX with actual swap partition dev name
sync
cat /dev/zero > /dev/sdX
mkswap /dev/sdX
swapon /dev/sdX

If it recurs after doing that, then it's time for a new drive.

-ml
-

rutek:/home/maciek# swapoff /dev/sda6
rutek:/home/maciek# sync
rutek:/home/maciek# cat /dev/zero > /dev/sda6
cat: błąd zapisu: Błąd wejścia/wyjścia (write error, after few minutes,
probably sda6 is full)

rutek:/home/maciek# dd if=/dev/zero of=/dev/sda6
dd: zapis do `/dev/sda6': Błąd wejścia/wyjścia
5992177+0 przeczytanych recordów
5992176+0 zapisanych recordów
skopiowane 3067994112 bajtów (3,1 GB), 298,159 sekund, 10,3 MB/s
rutek:/home/maciek# mkswap /dev/sda6
Setting up swapspace version 1, size = 3067990 kB
no label, UUID=2061df6e-d385-4367-9a4c-c8431e57b73a
rutek:/home/maciek# swapon /dev/sda6


dmesg:
Adding 2996080k swap on /dev/sda6.  Priority:-2 extents:1 across:2996080k

Also I try:
dd if==/dev/sda... of=/dev/null for all partitions
Test disk with bios utility and smartctl. Use autotest (bash shared
mapping and disktest). No errors/warnings. Only (sometimes) while system
resume from suspend to disk. Disk 10 months old...

Regards
-- 
Maciej Rutecki
http://www.unixy.pl