S32G Linux kernel panic on pfeng module

[xhu]

Hi,

I built Linux image from bsp24.0, fsl-image-base, the ddr settings were generated from S32DS tools. I saw Linux kernel panic during boot up late stage. It did not happen every time, hit this every 10-20 times power cycles. U-boot, dtb, kernel and rootfs are flashed into emmc. Please advise. The full log file is also attached.

[ 4.326893] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060
[ 4.326895] Mem abort info:
[ 4.326898] ESR = 0x96000005
[ 4.326902] Exception class = DABT (current EL), IL = 32 bits
[ 4.326905] SET = 0, FnV = 0
[ 4.326907] EA = 0, S1PTW = 0
[ 4.326909] Data abort info:
[ 4.326912] ISV = 0, ISS = 0x00000005
[ 4.326914] CM = 0, WnR = 0
[ 4.326923] user pgtable: 4k pages, 39-bit VAs, pgdp = 00000000d3bfd33d
[ 4.326926] [0000000000000060] pgd=0000000000000000, pud=0000000000000000
[ 4.326937] Internal error: Oops: 96000005 [#1] PREEMPT SMP
[ 4.326945] Modules linked in: nxp pfeng(O)
[ 4.326958] Process rngd (pid: 873, stack limit = 0x00000000f0b17534)

Thanks,

Xiaodong

[bpe]

Based on this information, it is not possible to establish the root cause of the
problem. Kernel panic is a normal reaction to broken pointers, the fact that
it happens from time to time points towards possible  memory decay.
The suggestions therefore are, test the system memory and debug your kernel.

Have a great day,
Platon

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