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?

Anyway, I'm adding it to regzbot:

#regzbot ^introduced: v5.15.110..v5.15.112
#regzbot title: Possible stack corruption and i2c issues due to irq warning on Inifineon SLM9670 TPM

Thanks.

-- 
An old man doll... just what I always wanted! - Clara