** Description changed:

  I presume this should be reported against the kernel, but linux-image-
  generic doesn't work
  
  :~$ # /dev/sdb is a 2T SSD
  :~$ # This device has no partitions, just a luks2 header
  :~$ sudo cryptsetup isLuks /dev/sdb && echo "true"
  true
  
  :~$ # Nevertheless, the kernel sees partitions:
  :~$ lsblk /dev/sdb
  NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
  sdb      8:16   0   1.8T  0 disk
  ├─sdb1   8:17   0   1.1T  0 part
  └─sdb2   8:18   0 197.3G  0 part
  
  :~$ # This is not the case with my other 2T disks
  :~$ sudo cryptsetup isLuks /dev/sda && echo "true"
  true
  :~$ lsblk /dev/sda
  NAME MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
  sda    8:0    0  1.8T  0 disk
  :~$ sudo cryptsetup isLuks /dev/sdc && echo "true"
  true
  :~$ lsblk /dev/sdc
  NAME MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
  sdc    8:32   0  1.8T  0 disk
  
  :~$ # Now if I open /dev/sdb, the encrypted disk is available, but the 
partitions remain:
  :~$ sudo cryptsetup open /dev/sdb luks.root.internal
  Enter passphrase for /dev/sdb:
  :~$ lsblk /dev/sdb
  NAME                 MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
  sdb                    8:16   0   1.8T  0 disk
  ├─sdb1                 8:17   0   1.1T  0 part
  ├─sdb2                 8:18   0 197.3G  0 part
  └─luks.root.internal 253:0    0   1.8T  0 crypt
  
  :~$ # I tried wiping the LUKS header on /dev/sdb and recreating it, with
  no effect.
  
  :~$ # The kernel I'm running is vmlinuz-6.8.0-31-generic
  :~$ # I was able to check this right from the 24.04 installer.
  :~$ # This is a longstanding problem, perhaps as long as 10 years.
  :~$ # I've seen it on many disks, but never reported the issue.
+ 
+ In case it might be useful, running parted on /dev/sdb, I see:
+ 
+ (parted) print
+ Error: /dev/sdb: unrecognized disk label
+ Model: ATA Dogfish SSD 2TB (scsi)
+ Disk /dev/sdb: 2000GB
+ Sector size (logical/physical): 512B/512B
+ Partition Table: unknown
+ Disk Flags:

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https://bugs.launchpad.net/bugs/2064699

Title:
  Kernel Sees Partitions Where There Aren't Any

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