BeagleBone black crashdump kernel panics

Hello everyone,

A BeagleBone black of mine seemingly crashes (syslogs have NULL filled areas) so I tried activating the kernel crash dump functionality so I can debug it/find the root cause. However when I test it and panic the kernel (via sudo sync; echo c | sudo tee /proc/sysrq-trigger), the crashdump kernel loaded also panics! So no dump is actually created.

I attaching the relevant kernel logs showing the panic but it seems it’s something related to udev:

[    1.645589] r3 : c80f0030  r2 : 00000001  r1 : 00000030  r0 : c80f0000
[    1.652143] Flags: Nzcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    1.659394] Control: 10c5387d  Table: 92878019  DAC: 00000051
[    1.665162] Process systemd-udevd (pid: 117, stack limit = 0xc2876210)
[    1.671715] Stack: (0xc2877b38 to 0xc2878000)
[    1.676091] 7b20:                                                       00000004 40070193
[    1.684306] 7b40: c0d9fb04 c281a040 c14425c8 00000010 c80f0000 c281a324 c2877bb4 c2877b68

does someone have some pointers towards what should I be looking at to fix it?

The kernel used is: 4.14.256-bone53 Sorry I’m not using the latest but it brakes some stuff and I’m not ready to make the jump.

Thank you!

kernelPanicLogs.log (21.3 KB)