kernel 4.16.0 rc3: TPM errors

kloczek

I'm observing some strange entries in kernel logs related to TPM:

dmesg | grep -i tpm

[ 0.000000] efi: ACPI=0x79c5e000 ACPI 2.0=0x79c5e000 SMBIOS=0x79edd000 SMBIOS 3.0=0x79edc000 TPMEventLog=0x72881018
[ 0.000000] ACPI: TPM2 0x0000000079C6A920 000034 (v03 Tpm2Tabl 00000001 AMI 00000000)
[ 3.093581] ima: No TPM chip found, activating TPM-bypass! (rc=-19)
[ 10.159185] tpm tpm0: A TPM error (379) occurred attempting get random
[ 12.602787] tpm tpm0: A TPM error (379) occurred attempting get random
[ 12.613914] tpm tpm0: A TPM error (379) occurred attempting get random
[ 12.621790] tpm tpm0: A TPM error (379) occurred attempting get random
[ 12.642149] tpm tpm0: A TPM error (379) occurred attempting get random

and all other error entries:

dmesg | grep -i error

[ 0.487334] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[ 2.906954] RAS: Correctable Errors collector initialized.
[ 10.159185] tpm tpm0: A TPM error (379) occurred attempting get random
[ 10.554807] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 10.662258] iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-7260-17.ucode failed with error -2
[ 11.243467] EDAC pnd2: Failed to register device with error -22.
[ 11.272984] EDAC pnd2: Failed to register device with error -22.
[ 11.294419] EDAC pnd2: Failed to register device with error -22.
[ 12.602787] tpm tpm0: A TPM error (379) occurred attempting get random
[ 12.613914] tpm tpm0: A TPM error (379) occurred attempting get random
[ 12.621790] tpm tpm0: A TPM error (379) occurred attempting get random
[ 12.642149] tpm tpm0: A TPM error (379) occurred attempting get random