Curious, that finds the header just fine - I guess your swap has been corrupted by a bad hibernation or something.
Could you try:
sudo mkswap /dev/sdb3
And then reboot - does the error go away?
Curious, that finds the header just fine - I guess your swap has been corrupted by a bad hibernation or something.
Could you try:
sudo mkswap /dev/sdb3
And then reboot - does the error go away?