FYI, we noticed the following commit (built with gcc-7):

commit: 825806674053fb77ec8834aa1beee3a2a1cf2693 ("tpm: take TPM chip power gating out of tpm_transmit()")
git://git.infradead.org/users/jjs/linux-tpmdd nested

in testcase: reaim
with following parameters:

	runtime: 300s
	nr_task: 100%
	test: new_dbase
	ucode: 0xb00002e
	cpufreq_governor: performance

test-description: REAIM is an updated and improved version of AIM 7 benchmark.
test-url: https://sourceforge.net/projects/re-aim-7/


on test machine: 192 threads Intel(R) Xeon(R) CPU E7-8890 v4 @ 2.20GHz with 512G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


[   24.287558 ] intel_idle: MWAIT substates: 0x2120
[   24.292621 ] intel_idle: v0.4.1 model 0x4F 
[   24.303857 ] intel_idle: lapic_timer_reliable_states 0xffffffff
[   24.310760 ] input: Sleep Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input0
[   24.320230 ] ACPI: Sleep Button [SLPB]
[   24.324350 ] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input1
[   24.332622 ] ACPI: Power Button [PWRF]
[   24.363231 ] ERST DBG: ERST support is disabled.
[   24.368561 ] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[   24.396217 ] 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[   24.425076 ] 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[   24.434114 ] Non-volatile memory driver v1.3 
[   24.438819 ] Linux agpgart interface v0.103
[   24.444016 ] tpm tpm0: tpm_try_transmit: tpm_send: error -5
[   24.450137 ] tpm_tis 00:04: 1.2 TPM (device-id 0x0, rev-id 78)
[   24.460825 ] tpm tpm0: A TPM error (-14) occurred attempting to determine the timeouts
[   24.469585 ] tpm_tis: probe of 00:04 failed with error -14
[   24.497212 ] mei_me 0000:00:16.0: Device doesn't have valid ME Interface
[   24.497395 ] rdac: device handler registered
[   24.509453 ] hp_sw: device handler registered
[   24.514220 ] emc: device handler registered
[   24.519156 ] alua: device handler registered
[   24.523838 ] MACsec IEEE 802.1AE
[   24.527403 ] libphy: Fixed MDIO Bus: probed
[   24.532208 ] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
[   24.540074 ] e1000: Copyright (c) 1999-2006 Intel Corporation.
[   24.546566 ] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[   24.553077 ] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[   24.559773 ] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.4.0-k
[   24.567545 ] igb: Copyright (c) 2007-2014 Intel Corporation.
[   24.573999 ] IOAPIC[4]: Set routing entry (12-10 -> 0xef -> IRQ 44 Mode:1 Active:1 Dest:0)
[   24.765743 ] igb 0000:c2:00.0: added PHC on eth0 
[   24.770811 ] igb 0000:c2:00.0: Intel(R) Gigabit Ethernet Network Connection
[   24.778488 ] igb 0000:c2:00.0: eth0: (PCIe:2.5Gb/s:Width x4) 00:1b:21:32:ed:34
[   24.786462 ] igb 0000:c2:00.0: eth0: PBA No: Unknown
[   24.791909 ] igb 0000:c2:00.0: Using MSI-X interrupts. 8 rx queue(s), 8 tx queue(s)
[   24.800483 ] IOAPIC[4]: Set routing entry (12-13 -> 0xef -> IRQ 54 Mode:1 Active:1 Dest:0)
[   24.880813 ] tsc: Refined TSC clocksource calibration: 2194.710 MHz
[   24.887894 ] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fa2ad8af40, max_idle_ns: 440795294349 ns
[   24.899528 ] clocksource: Switched to clocksource tsc
[   24.997618 ] igb 0000:c2:00.1: added PHC on eth1 
[   25.002682 ] igb 0000:c2:00.1: Intel(R) Gigabit Ethernet Network Connection
[   25.010356 ] igb 0000:c2:00.1: eth1: (PCIe:2.5Gb/s:Width x4) 00:1b:21:32:ed:35
[   25.018325 ] igb 0000:c2:00.1: eth1: PBA No: Unknown
[   25.023762 ] igb 0000:c2:00.1: Using MSI-X interrupts. 8 rx queue(s), 8 tx queue(s)
[   25.032298 ] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version 5.1.0-k
[   25.040856 ] ixgbe: Copyright (c) 1999-2016 Intel Corporation.
[   25.047566 ] IOAPIC[1]: Set routing entry (9-21 -> 0xef -> IRQ 64 Mode:1 Active:1 Dest:0)
[   25.335515 ] ixgbe 0000:03:00.0: Multiqueue Enabled: Rx Queue count = 63, Tx Queue count = 63 XDP Queue count = 0
[   25.431906 ] ixgbe 0000:03:00.0: 16.000 Gb/s available PCIe bandwidth, limited by 5 GT/s x4 link at 0000:00:03.2 (capable of 63.008 Gb/s with 8 GT/s x8 link)
[   25.544722 ] ixgbe 0000:03:00.0: MAC: 3, PHY: 0, PBA No: G36748-005
[   25.551628 ] ixgbe 0000:03:00.0: a0:36:9f:24:44:cc


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Rong Chen