Hi Christian.
On 11/6/26 10:37 AM, Christian Zigotzky wrote:
Hi all,
Ever since we enabled PREEMPT on our Nemo boards [1], we have been experiencing
occasional problems with the kernel stack.
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in:
srcu_gp_start_if_needed+0x534/0x538
Rebooting in 180 seconds..
We had one known issue which michal had brought up.
Do you have tracing enabled or running a bpf/bcc program?
This is the fix already in upstream. Do you have this patch?
https://lore.kernel.org/all/[email protected]/#t
We are using the following patches: [2] [3]
We have disabled PREEMPT with a patch [4] again, and since then our Nemo boards
have been running perfectly once more.
As the problem with the kernel stack only occurs sporadically, bisection is
impossible.
I hope you can fix the kernel stack issue.
Thanks,
Christian
[1] https://en.wikipedia.org/wiki/AmigaOne_X1000
[2]
https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/preempt_v1.patch
[3]
https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/kvm_powerpc.patch
[4]
https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/Kconfig.preempt.patch
[5] Kernel config:
https://raw.githubusercontent.com/chzigotzky/kernels/31c064092e3aab0875c47d44838443c9515b2970/configs/x1000_defconfig
