Created attachment 1833352 [details]
Screenshot of kernel panic contents
1. Please describe the problem:
When using a TPM2 chip via SPI on a Raspberry Pi 4 or CM4 using the tpm-slb9670 overlay which activates the tpm_tis_spi driver the kernel will panic on reboot locking it into this state. Only a hardware reset is able to recover the device (or using sysctl kernel.panic=SEC to just continue after the kernel panic happens).
2. What is the Version-Release number of the kernel:
Linux fedora 5.13.5-200.fc34.aarch64 #1 SMP Sun Jul 25 16:03:46 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux
3. Did it work previously in Fedora? If so, what kernel version did the issue
*first* appear? Old kernels are available for download at
I don't know if it worked prior. First started to use and notice this on F34.
4. Can you reproduce this issue? If so, please provide the steps to reproduce
the issue below:
* flash a fresh F34 image using arm-image-installer onto an SD-Card targeted for RPI4 or onto a CM4
* activate the tpm-slb9670 SPI interface (see below)
To activate the SPI tpm interface add the following lines to /boot/efi/config.txt:
5. Does this problem occur with the latest Rawhide kernel? To install the
Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
``sudo dnf update --enablerepo=rawhide kernel``:
Yes, it also occurs on the latest rawhide kernel F36 5.15
6. Are you running any modules that not shipped with directly Fedora's kernel?:
No, no extra modules.
7. Please attach the kernel logs. You can get the complete kernel log
for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
issue occurred on a previous boot, use the journalctl ``-b`` flag.
The panic seems to occur in tpm_chip_start, tpm_chip_unregister tpm_tis_spi_remove, spi_remove.
Since the panic is only printed on the screen and not the log (journald is already shut down at this point) I attach a screenshot of the output.
Known issue, upstream are fighting over what the actual problem is:
This message is a reminder that Fedora Linux 34 is nearing its end of life.
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Fedora Linux 34 entered end-of-life (EOL) status on 2022-06-07.
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