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Message-ID: <03daca5c-e468-8889-4dc2-e625a664d571@alliedtelesis.co.nz>
Date: Fri, 2 Jun 2023 04:19:39 +0000
From: Chris Packham <Chris.Packham@...iedtelesis.co.nz>
To: Bagas Sanjaya <bagasdotme@...il.com>,
Lino Sanfilippo <l.sanfilippo@...bus.com>,
Jarkko Sakkinen <jarkko@...nel.org>,
Sasha Levin <sashal@...nel.org>,
Peter Huewe <peterhuewe@....de>, Jason Gunthorpe <jgg@...pe.ca>
CC: Linux Kernel Integrity <linux-integrity@...r.kernel.org>,
"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
Linux Regressions <regressions@...ts.linux.dev>
Subject: Re: New kernel warning after updating from LTS 5.15.110 to 5.15.112
(and 5.15.113)
On 2/06/23 16:10, Bagas Sanjaya wrote:
> On 5/29/23 09:37, Chris Packham wrote:
>> On 29/05/23 14:04, Bagas Sanjaya wrote:
>>> On Sun, May 28, 2023 at 11:42:50PM +0000, Chris Packham wrote:
>>>> Hi,
>>>>
>>>> We have an embedded product with an Infineon SLM9670 TPM. After updating
>>>> to a newer LTS kernel version we started seeing the following warning at
>>>> boot.
>>>>
>>>> [ 4.741025] ------------[ cut here ]------------
>>>> [ 4.749894] irq 38 handler tis_int_handler+0x0/0x154 enabled interrupts
>>>> [ 4.756555] WARNING: CPU: 0 PID: 0 at kernel/irq/handle.c:159
>>>> __handle_irq_event_percpu+0xf4/0x180
>>>> [ 4.765557] Modules linked in:
>>>> [ 4.768626] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.113 #1
>>>> [ 4.774747] Hardware name: Allied Telesis x250-18XS (DT)
>>>> [ 4.780080] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS
>>>> BTYPE=--)
>>>> [ 4.787072] pc : __handle_irq_event_percpu+0xf4/0x180
>>>> [ 4.792146] lr : __handle_irq_event_percpu+0xf4/0x180
>>>> [ 4.797220] sp : ffff800008003e40
>>>> [ 4.800547] x29: ffff800008003e40 x28: ffff8000093951c0 x27:
>>>> ffff80000902a9b8
>>>> [ 4.807716] x26: ffff800008fe8d28 x25: ffff8000094a62bd x24:
>>>> ffff000001b92400
>>>> [ 4.814885] x23: 0000000000000026 x22: ffff800008003ec4 x21:
>>>> 0000000000000000
>>>> [ 4.822053] x20: 0000000000000001 x19: ffff000002381200 x18:
>>>> ffffffffffffffff
>>>> [ 4.829222] x17: ffff800076962000 x16: ffff800008000000 x15:
>>>> ffff800088003b57
>>>> [ 4.836390] x14: 0000000000000000 x13: ffff8000093a5078 x12:
>>>> 000000000000035d
>>>> [ 4.843558] x11: 000000000000011f x10: ffff8000093a5078 x9 :
>>>> ffff8000093a5078
>>>> [ 4.850727] x8 : 00000000ffffefff x7 : ffff8000093fd078 x6 :
>>>> ffff8000093fd078
>>>> [ 4.857895] x5 : 000000000000bff4 x4 : 0000000000000000 x3 :
>>>> 0000000000000000
>>>> [ 4.865062] x2 : 0000000000000000 x1 : 0000000000000000 x0 :
>>>> ffff8000093951c0
>>>> [ 4.872230] Call trace:
>>>> [ 4.874686] __handle_irq_event_percpu+0xf4/0x180
>>>> [ 4.879411] handle_irq_event+0x64/0xec
>>>> [ 4.883264] handle_level_irq+0xc0/0x1b0
>>>> [ 4.887202] generic_handle_irq+0x30/0x50
>>>> [ 4.891229] mvebu_gpio_irq_handler+0x11c/0x2a0
>>>> [ 4.895780] handle_domain_irq+0x60/0x90
>>>> [ 4.899720] gic_handle_irq+0x4c/0xd0
>>>> [ 4.903398] call_on_irq_stack+0x20/0x4c
>>>> [ 4.907338] do_interrupt_handler+0x54/0x60
>>>> [ 4.911538] el1_interrupt+0x30/0x80
>>>> [ 4.915130] el1h_64_irq_handler+0x18/0x24
>>>> [ 4.919244] el1h_64_irq+0x78/0x7c
>>>> [ 4.922659] arch_cpu_idle+0x18/0x2c
>>>> [ 4.926249] do_idle+0xc4/0x150
>>>> [ 4.929404] cpu_startup_entry+0x28/0x60
>>>> [ 4.933343] rest_init+0xe4/0xf4
>>>> [ 4.936584] arch_call_rest_init+0x10/0x1c
>>>> [ 4.940699] start_kernel+0x600/0x640
>>>> [ 4.944375] __primary_switched+0xbc/0xc4
>>>> [ 4.948402] ---[ end trace 940193047b35b311 ]---
>>>>
>>>> Initially I dismissed this as a warning that would probably be cleaned
>>>> up when we did more work on the TPM support for our product but we also
>>>> seem to be getting some new i2c issues and possibly a kernel stack
>>>> corruption that we've conflated with this TPM warning.
>>> Can you reproduce this issue on mainline? Can you also bisect to find
>>> the culprit?
>> No the error doesn't appear on a recent mainline kernel. I do still get
>>
>> tpm_tis_spi spi1.1: 2.0 TPM (device-id 0x1B, rev-id 22)
>> tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
>> tpm tpm0: A TPM error (256) occurred attempting the self test
>>
>> but I think I was getting that on v5.15.110
>>
> I repeat: Can you bisect between v5.15 and v5.15.112?
It's definitely between v5.15.110 and v5.15.112.
I'll do a proper bisect next week but I'm pretty sure it's related to
the "tpm, tpm_tis:" series. The problem can be worked around by removing
the TPM interrupt from the device tree for the board.
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