New kernel warning after updating from LTS 5.15.110 to 5.15.112 (and 5.15.113)

[Chris Packham]

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.