Merge tag 'integrity-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity

Pull IMA updates from Mimi Zohar:

 - Introduce IMA and EVM post-quantum ML-DSA signature support

   ML-DSA signature support for IMA and EVM is limited to sigv3
   signatures, which calculates and verifies a hash of a compact
   structure containing the file data/metadata hash, hash type, and hash
   algorithm. IMA and EVM still calculate the file data/metadata hashes
   respectively.

 - Introduce support for removing IMA measurement list records stored in
   kernel memory

   The IMA measurement list can grow large depending on policy, but
   removing records breaks remote attestation, unless they are safely
   preserved and made available for attestation requests. Until
   environments are prepared to preserve the measurement records, a new
   CONFIG_IMA_STAGING Kconfig option is introduced to guard against
   deletion.

   Several approaches for removing measurement list records were
   evaluated but rejected due to filesystem constraints, the
   introduction of a new critical data record, and locking concerns. Two
   methods are being upstreamed: staged deletion with confirmation, and
   staged deletion of N records without confirmation. Both methods
   minimize the period during which new measurements are blocked from
   being appended to the measurement list by staging the measurement
   list.

   A comparison of the two methods is included in the documentation.

 - Some code cleanup, and a couple of bug fixes

* tag 'integrity-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
  doc: security: Add documentation of exporting and deleting IMA measurements
  ima: Support staging and deleting N measurements records
  ima: Add support for flushing the hash table when staging measurements
  ima: Add support for staging measurements with prompt
  ima: Introduce ima_dump_measurement()
  ima: Use snprintf() in create_securityfs_measurement_lists
  ima: Mediate open/release method of the measurements list
  ima: Introduce _ima_measurements_start() and _ima_measurements_next()
  ima: Introduce per binary measurements list type binary_runtime_size value
  ima: Introduce per binary measurements list type ima_num_records counter
  ima: Replace static htable queue with dynamically allocated array
  ima: Remove ima_h_table structure
  evm: terminate and bound the evm_xattrs read buffer
  integrity: Add support for sigv3 verification using ML-DSA keys
  integrity: Refactor asymmetric_verify for reusability
  integrity: Check that algo parameter is within valid range
  integrity: Check for NULL returned by asymmetric_key_public_key
  ima: return error early if file xattr cannot be changed
  ima: Fix sigv3 signature handling for EVM_IMA_XATTR_DIGSIG

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