add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/security/integrity/digsig.c
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@@ -120,6 +120,7 @@
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 {
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 	struct key_restriction *restriction;
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 	key_perm_t perm;
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+	int ret;
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 	perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW
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 		| KEY_USR_READ | KEY_USR_SEARCH;
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@@ -140,7 +141,10 @@
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 	perm |= KEY_USR_WRITE;
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 out:
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-	return __integrity_init_keyring(id, perm, restriction);
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+	ret = __integrity_init_keyring(id, perm, restriction);
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+	if (ret)
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+		kfree(restriction);
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+	return ret;
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 }
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 int __init integrity_add_key(const unsigned int id, const void *data,