[Bug 1854620] Re: Kernel crash on RasPi 3B+ (ARM64)

[Sven]

Hello!

I did not build the kernel myself!

I installed a preinstalled server image and I get my updated from:
 http://ftp.fau.de/ubuntu-ports/

(which is a mirror of: http://ports.ubuntu.com/

I will try disabling some drivers and I will check the following
(possibly newer) images:

http://cdimage.ubuntu.com/ubuntu/releases/18.04/release/ubuntu-18.04.3-preinstalled-server-arm64+raspi3.img.xz
http://cdimage.ubuntu.com/releases/19.10/release/ubuntu-19.10-preinstalled-server-arm64+raspi3.img.xz


I'm wondering to about the log output. I wasn't sure, if I interpreted
it right.

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Title:
  Kernel crash on RasPi 3B+ (ARM64)

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[Bug 1854620] Re: Kernel crash on RasPi 3B+ (ARM64)

[Hui Wang]

You built the kernel "4.14.66-chainsx-cxcore+ (r...@myhost.nopad.org)"
yourself? Looks like it is not a canonical's kernel.

According to the log, It looks like some userspace apps make the kernel
crash, it is weird since usually userspace can't crash kernel.

And the calltrace doesn't show which driver or kernel module is called
before crashing, so far my idea is to disable kernel drivers little by
little until the crash doesn't happen. First, you could disable wifi
(you could use ethernet if you need network)

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Title:
  Kernel crash on RasPi 3B+ (ARM64)

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[Bug 1854620] Re: Kernel crash on RasPi 3B+ (ARM64)

[Sven]

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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Title:
  Kernel crash on RasPi 3B+ (ARM64)

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[Bug 1854620] Re: Kernel crash on RasPi 3B+ (ARM64)

[Sven]

apport information

** Tags added: apport-collected bionic

** Description changed:

  
  Im running a Raspberry Pi 3B+ with Ubuntu 18.04.3 LTS (on ARM64). No swap 
space configured.
  My Kernel is: Linux ubuntu 4.14.66-chainsx-cxcore+ #2 SMP PREEMPT Sun Aug 26 
03:37:14 EDT 2018 aarch64 aarch64 aarch64 GNU/Linux
  
  I'm experiencing a kernel crash after some runtime.
  
  My first crash issued the following message:
  
  
  [Do Nov 28 14:46:09 2019] Linux version 4.14.66-chainsx-cxcore+ 
(r...@myhost.nopad.org) (gcc version 6.3.0 20170516 (Debian 6.3.0-18)) #2 SMP 
PREEMPT Sun Aug 26 03:37:14 EDT 2018
  [Do Nov 28 14:46:09 2019] Boot CPU: AArch64 Processor [410fd034]
  [...]
  [Fr Nov 29 20:21:20 2019] Unable to handle kernel paging request at virtual 
address 7b1fca9f2b3ece
  [Fr Nov 29 20:21:20 2019] Mem abort info:
  [Fr Nov 29 20:21:20 2019]   Exception class = DABT (current EL), IL = 32 bits
  
  After enabling some more debug messages, I got:
  
  [Sa Nov 30 06:25:03 2019] Unable to handle kernel paging request at virtual 
address ffce6dc2e920
  [Sa Nov 30 06:25:03 2019] Mem abort info:
  [Sa Nov 30 06:25:03 2019]   Exception class = DABT (current EL), IL = 32 bits
  [Sa Nov 30 06:25:03 2019]   SET = 0, FnV = 0
  [Sa Nov 30 06:25:03 2019]   EA = 0, S1PTW = 0
  [Sa Nov 30 06:25:03 2019] Data abort info:
  [Sa Nov 30 06:25:03 2019]   ISV = 0, ISS = 0x0045
  [Sa Nov 30 06:25:03 2019]   CM = 0, WnR = 1
  [Sa Nov 30 06:25:03 2019] swapper pgtable: 4k pages, 39-bit VAs, pgd = 
ff8723e2f000
  [Sa Nov 30 06:25:03 2019] [ffce6dc2e920] *pgd=, 
*pud=
  [Sa Nov 30 06:25:03 2019] Internal error: Oops: 9645 [#1] PREEMPT SMP
  [Sa Nov 30 06:25:03 2019] Modules linked in: brcmfmac brcmutil cfg80211 
rfkill snd_bcm2835(C) snd_pcm snd_timer snd sdhci_iproc w1_gpio vchiq(C) wire 
cn hwmon uio_pdrv_genirq uio sch_fq_codel ip_tables x_tables ipv6
  [Sa Nov 30 06:25:03 2019] CPU: 1 PID: 800 Comm: apache2 Tainted: G C  
4.14.66-chainsx-cxcore+ #2
  [Sa Nov 30 06:25:03 2019] Hardware name: Raspberry Pi 3 Model B Plus Rev 1.3 
(DT)
  [Sa Nov 30 06:25:03 2019] task: ffcf6e98be80 task.stack: ff8009e08000
  [Sa Nov 30 06:25:03 2019] PC is at unlink_anon_vmas+0x160/0x1e8
  [Sa Nov 30 06:25:03 2019] LR is at unlink_anon_vmas+0x1ac/0x1e8
  [Sa Nov 30 06:25:03 2019] pc : [] lr : [] 
pstate: 8145
  [Sa Nov 30 06:25:03 2019] sp : ff8009e0bc80
  [Sa Nov 30 06:25:03 2019] x29: ff8009e0bc80 x28: ffcf6e98be80 
  [Sa Nov 30 06:25:03 2019] x27: dead0100 x26: ffcf6dc2e8a8 
  [Sa Nov 30 06:25:03 2019] x25: dead0200 x24: dead0100 
  [Sa Nov 30 06:25:03 2019] x23: dead0200 x22: ff8723e05fd8 
  [Sa Nov 30 06:25:03 2019] x21: ffcf6dc2e920 x20: ffcf6dc2e910 
  [Sa Nov 30 06:25:03 2019] x19: ffcf6dc32198 x18: 05c3 
  [Sa Nov 30 06:25:03 2019] x17: 007f946fd060 x16:  
  [Sa Nov 30 06:25:03 2019] x15:  x14: fff0c000 
  [Sa Nov 30 06:25:03 2019] x13: 07f91c00 x12: dead0100 
  [Sa Nov 30 06:25:03 2019] x11: dead0200 x10: 0150 
  [Sa Nov 30 06:25:03 2019] x9 :  x8 : ffcf6dc31da0 
  [Sa Nov 30 06:25:03 2019] x7 :  x6 : 0008 
  [Sa Nov 30 06:25:03 2019] x5 :  x4 : 0013 
  [Sa Nov 30 06:25:03 2019] x3 : ffcf6dc2e920 x2 : ffce6dc2e920 
  [Sa Nov 30 06:25:03 2019] x1 : ffcf6dc32198 x0 : ffcf7c4d3500 
  [Sa Nov 30 06:25:03 2019] Process apache2 (pid: 800, stack limit = 
0xff8009e08000)
  [Sa Nov 30 06:25:03 2019] Call trace:
  [Sa Nov 30 06:25:03 2019] Exception stack(0xff8009e0bb40 to 
0xff8009e0bc80)
  [Sa Nov 30 06:25:03 2019] bb40: ffcf7c4d3500 ffcf6dc32198 
ffce6dc2e920 ffcf6dc2e920
  [Sa Nov 30 06:25:03 2019] bb60: 0013  
0008 
  [Sa Nov 30 06:25:03 2019] bb80: ffcf6dc31da0  
0150 dead0200
  [Sa Nov 30 06:25:03 2019] bba0: dead0100 07f91c00 
fff0c000 
  [Sa Nov 30 06:25:03 2019] bbc0:  007f946fd060 
05c3 ffcf6dc32198
  [Sa Nov 30 06:25:03 2019] bbe0: ffcf6dc2e910 ffcf6dc2e920 
ff8723e05fd8 dead0200
  [Sa Nov 30 06:25:03 2019] bc00: dead0100 dead0200 
ffcf6dc2e8a8 dead0100
  [Sa Nov 30 06:25:03 2019] bc20: ffcf6e98be80 ff8009e0bc80 
ff87231f6b84 ff8009e0bc80
  [Sa Nov 30 06:25:03 2019] bc40: ff87231f6b38 8145 
ff8009e0bc80 ff87231f6b84
  [Sa Nov 30 06:25:03 2019] bc60: 007f ffcf6dc2e910 
ff8009e0bc80 ff87231f6b38
  [Sa Nov 30 06:25:03 2019] [] unlink_anon_vmas+0x160/0x1e8
  [Sa Nov 30 06:25:03 2019] [] free_pgtables+0x8c/0x100
  [Sa Nov 30 06:25:03 2019] [] exit_mmap+0xb8/0x160
  [Sa Nov 30 06:25:03 2019] [] mmput+0x60/0xf0