Like John Shipp, we are on Debian 9.4 32-bit (on VMware) and still have this issue on the latest kernel: 4.9.0-8-686-pae #1 SMP Debian 4.9.110-3+deb9u6 (2018-10-08)
Message in syslog is :
swapon: /dev/sdb1: swapon failed: Invalid argument
To work round it, I've pinned kernel at 4.9.0-7 on production VMs with an apt/preferences.d/ file. - see also Debian bug #907175
Like John Shipp, we are on Debian 9.4 32-bit (on VMware) and still have this issue on the latest kernel: 4.9.0-8-686-pae #1 SMP Debian 4.9.110-3+deb9u6 (2018-10-08)
Message in syslog is :
swapon: /dev/sdb1: swapon failed: Invalid argument
To work round it, I've pinned kernel at 4.9.0-7 on production VMs with an apt/preferences.d/ file. - see also Debian bug #907175
Cheers