Merge tag 'tpm-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:
 "In additon to bug fixes, these are noteworthy changes:

   - In TPM I2C drivers, migrate from probe() to probe_new() (a new
     driver model in I2C).

   - TPM CRB: Pluton support

   - Add duplicate hash detection to the blacklist keyring in order to
     give more meaningful klog output than e.g. [1]"

Link: https://askubuntu.com/questions/1436856/ubuntu-22-10-blacklist-problem-blacklisting-hash-13-message-on-boot [1]

* tag 'tpm-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  tpm: add vendor flag to command code validation
  tpm: Add reserved memory event log
  tpm: Use managed allocation for bios event log
  tpm: tis_i2c: Convert to i2c's .probe_new()
  tpm: tpm_i2c_nuvoton: Convert to i2c's .probe_new()
  tpm: tpm_i2c_infineon: Convert to i2c's .probe_new()
  tpm: tpm_i2c_atmel: Convert to i2c's .probe_new()
  tpm: st33zp24: Convert to i2c's .probe_new()
  KEYS: asymmetric: Fix ECDSA use via keyctl uapi
  certs: don't try to update blacklist keys
  KEYS: Add new function key_create()
  certs: make blacklisted hash available in klog
  tpm_crb: Add support for CRB devices based on Pluton
  crypto: certs: fix FIPS selftest dependency

certs/blacklist.c

@@ -183,16 +183,19 @@ static int mark_raw_hash_blacklisted(const char *hash)
 {
 	key_ref_t key;
 
-	key = key_create_or_update(make_key_ref(blacklist_keyring, true),
-				   "blacklist",
-				   hash,
-				   NULL,
-				   0,
-				   BLACKLIST_KEY_PERM,
-				   KEY_ALLOC_NOT_IN_QUOTA |
-				   KEY_ALLOC_BUILT_IN);
+	key = key_create(make_key_ref(blacklist_keyring, true),
+			 "blacklist",
+			 hash,
+			 NULL,
+			 0,
+			 BLACKLIST_KEY_PERM,
+			 KEY_ALLOC_NOT_IN_QUOTA |
+			 KEY_ALLOC_BUILT_IN);
 	if (IS_ERR(key)) {
-		pr_err("Problem blacklisting hash (%ld)\n", PTR_ERR(key));
+		if (PTR_ERR(key) == -EEXIST)
+			pr_warn("Duplicate blacklisted hash %s\n", hash);
+		else
+			pr_err("Problem blacklisting hash %s: %pe\n", hash, key);
 		return PTR_ERR(key);
 	}
 	return 0;

crypto/asymmetric_keys/Kconfig

@@ -83,6 +83,6 @@ config FIPS_SIGNATURE_SELFTEST
 	  for FIPS.
 	depends on KEYS
 	depends on ASYMMETRIC_KEY_TYPE
-	depends on PKCS7_MESSAGE_PARSER
+	depends on PKCS7_MESSAGE_PARSER=X509_CERTIFICATE_PARSER
 
 endif # ASYMMETRIC_KEY_TYPE

crypto/asymmetric_keys/pkcs7_verify.c

@@ -485,3 +485,4 @@ int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7,
 	pkcs7->data_len = datalen;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(pkcs7_supply_detached_data);

crypto/asymmetric_keys/public_key.c

@@ -186,8 +186,28 @@ static int software_key_query(const struct kernel_pkey_params *params,
 
 	len = crypto_akcipher_maxsize(tfm);
 	info->key_size = len * 8;
-	info->max_data_size = len;
-	info->max_sig_size = len;
+
+	if (strncmp(pkey->pkey_algo, "ecdsa", 5) == 0) {
+		/*
+		 * ECDSA key sizes are much smaller than RSA, and thus could
+		 * operate on (hashed) inputs that are larger than key size.
+		 * For example SHA384-hashed input used with secp256r1
+		 * based keys.  Set max_data_size to be at least as large as
+		 * the largest supported hash size (SHA512)
+		 */
+		info->max_data_size = 64;
+
+		/*
+		 * Verify takes ECDSA-Sig (described in RFC 5480) as input,
+		 * which is actually 2 'key_size'-bit integers encoded in
+		 * ASN.1.  Account for the ASN.1 encoding overhead here.
+		 */
+		info->max_sig_size = 2 * (len + 3) + 2;
+	} else {
+		info->max_data_size = len;
+		info->max_sig_size = len;
+	}
+
 	info->max_enc_size = len;
 	info->max_dec_size = len;
 	info->supported_ops = (KEYCTL_SUPPORTS_ENCRYPT |

drivers/char/tpm/eventlog/acpi.c

@@ -14,6 +14,7 @@
  * Access to the event log extended by the TCG BIOS of PC platform
  */
 
+#include <linux/device.h>
 #include <linux/seq_file.h>
 #include <linux/fs.h>
 #include <linux/security.h>
@@ -135,7 +136,7 @@ int tpm_read_log_acpi(struct tpm_chip *chip)
 	}
 
 	/* malloc EventLog space */
-	log->bios_event_log = kmalloc(len, GFP_KERNEL);
+	log->bios_event_log = devm_kmalloc(&chip->dev, len, GFP_KERNEL);
 	if (!log->bios_event_log)
 		return -ENOMEM;
 
@@ -160,7 +161,7 @@ int tpm_read_log_acpi(struct tpm_chip *chip)
 	return format;
 
 err:
-	kfree(log->bios_event_log);
+	devm_kfree(&chip->dev, log->bios_event_log);
 	log->bios_event_log = NULL;
 	return ret;
 }

drivers/char/tpm/eventlog/efi.c

@@ -6,6 +6,7 @@
  *      Thiebaud Weksteen <[email protected]>
  */
 
+#include <linux/device.h>
 #include <linux/efi.h>
 #include <linux/tpm_eventlog.h>
 
@@ -55,7 +56,7 @@ int tpm_read_log_efi(struct tpm_chip *chip)
 	}
 
 	/* malloc EventLog space */
-	log->bios_event_log = kmemdup(log_tbl->log, log_size, GFP_KERNEL);
+	log->bios_event_log = devm_kmemdup(&chip->dev, log_tbl->log, log_size, GFP_KERNEL);
 	if (!log->bios_event_log) {
 		ret = -ENOMEM;
 		goto out;
@@ -76,7 +77,7 @@ int tpm_read_log_efi(struct tpm_chip *chip)
 			     MEMREMAP_WB);
 	if (!final_tbl) {
 		pr_err("Could not map UEFI TPM final log\n");
-		kfree(log->bios_event_log);
+		devm_kfree(&chip->dev, log->bios_event_log);
 		ret = -ENOMEM;
 		goto out;
 	}
@@ -91,11 +92,11 @@ int tpm_read_log_efi(struct tpm_chip *chip)
 	 * Allocate memory for the 'combined log' where we will append the
 	 * 'final events log' to.
 	 */
-	tmp = krealloc(log->bios_event_log,
-		       log_size + final_events_log_size,
-		       GFP_KERNEL);
+	tmp = devm_krealloc(&chip->dev, log->bios_event_log,
+			    log_size + final_events_log_size,
+			    GFP_KERNEL);
 	if (!tmp) {
-		kfree(log->bios_event_log);
+		devm_kfree(&chip->dev, log->bios_event_log);
 		ret = -ENOMEM;
 		goto out;
 	}

drivers/char/tpm/eventlog/of.c

@@ -10,13 +10,44 @@
  * Read the event log created by the firmware on PPC64
  */
 
+#include <linux/device.h>
 #include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_reserved_mem.h>
 #include <linux/tpm_eventlog.h>
 
 #include "../tpm.h"
 #include "common.h"
 
+static int tpm_read_log_memory_region(struct tpm_chip *chip)
+{
+	struct device_node *node;
+	struct resource res;
+	int rc;
+
+	node = of_parse_phandle(chip->dev.parent->of_node, "memory-region", 0);
+	if (!node)
+		return -ENODEV;
+
+	rc = of_address_to_resource(node, 0, &res);
+	of_node_put(node);
+	if (rc)
+		return rc;
+
+	chip->log.bios_event_log = devm_memremap(&chip->dev, res.start, resource_size(&res),
+						 MEMREMAP_WB);
+	if (IS_ERR(chip->log.bios_event_log))
+		return -ENOMEM;
+
+	chip->log.bios_event_log_end = chip->log.bios_event_log + resource_size(&res);
+
+	return chip->flags & TPM_CHIP_FLAG_TPM2 ? EFI_TCG2_EVENT_LOG_FORMAT_TCG_2 :
+		EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2;
+}
+
 int tpm_read_log_of(struct tpm_chip *chip)
 {
 	struct device_node *np;
@@ -38,7 +69,7 @@ int tpm_read_log_of(struct tpm_chip *chip)
 	sizep = of_get_property(np, "linux,sml-size", NULL);
 	basep = of_get_property(np, "linux,sml-base", NULL);
 	if (sizep == NULL && basep == NULL)
-		return -ENODEV;
+		return tpm_read_log_memory_region(chip);
 	if (sizep == NULL || basep == NULL)
 		return -EIO;
 
@@ -65,7 +96,7 @@ int tpm_read_log_of(struct tpm_chip *chip)
 		return -EIO;
 	}
 
-	log->bios_event_log = kmemdup(__va(base), size, GFP_KERNEL);
+	log->bios_event_log = devm_kmemdup(&chip->dev, __va(base), size, GFP_KERNEL);
 	if (!log->bios_event_log)
 		return -ENOMEM;
 

drivers/char/tpm/st33zp24/i2c.c

@@ -101,8 +101,7 @@ static const struct st33zp24_phy_ops i2c_phy_ops = {
  * @return: 0 in case of success.
  *	 -1 in other case.
  */
-static int st33zp24_i2c_probe(struct i2c_client *client,
-			      const struct i2c_device_id *id)
+static int st33zp24_i2c_probe(struct i2c_client *client)
 {
 	struct st33zp24_i2c_phy *phy;
 
@@ -161,7 +160,7 @@ static struct i2c_driver st33zp24_i2c_driver = {
 		.of_match_table = of_match_ptr(of_st33zp24_i2c_match),
 		.acpi_match_table = ACPI_PTR(st33zp24_i2c_acpi_match),
 	},
-	.probe = st33zp24_i2c_probe,
+	.probe_new = st33zp24_i2c_probe,
 	.remove = st33zp24_i2c_remove,
 	.id_table = st33zp24_i2c_id
 };

drivers/char/tpm/tpm-chip.c

@@ -267,7 +267,6 @@ static void tpm_dev_release(struct device *dev)
 	idr_remove(&dev_nums_idr, chip->dev_num);
 	mutex_unlock(&idr_lock);
 
-	kfree(chip->log.bios_event_log);
 	kfree(chip->work_space.context_buf);
 	kfree(chip->work_space.session_buf);
 	kfree(chip->allocated_banks);

drivers/char/tpm/tpm2-cmd.c

@@ -777,10 +777,12 @@ int tpm2_auto_startup(struct tpm_chip *chip)
 
 int tpm2_find_cc(struct tpm_chip *chip, u32 cc)
 {
+	u32 cc_mask;
 	int i;
 
+	cc_mask = 1 << TPM2_CC_ATTR_VENDOR | GENMASK(15, 0);
 	for (i = 0; i < chip->nr_commands; i++)
-		if (cc == (chip->cc_attrs_tbl[i] & GENMASK(15, 0)))
+		if (cc == (chip->cc_attrs_tbl[i] & cc_mask))
 			return i;
 
 	return -1;