linux-kernel - Kernel panic - not syncing: Fatal exception in interrupt (file_free

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Date:   Thu, 28 Sep 2017 20:32:03 -0700
From:   Kyle Sanderson <kyle.leet@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux-Kernal <linux-kernel@...r.kernel.org>,
        paulmck@...ux.vnet.ibm.com
Subject: Kernel panic - not syncing: Fatal exception in interrupt (file_free_rcu+0x14)

Not sure if the stack is crap or not, but this looks like an RCU crash?

https://i.imgur.com/sBnNe1p.jpg

Kyle.

FileServer ~ # uname -a
Linux FileServer.OpenWRT.local 4.12.5-gentoo #1 SMP PREEMPT Fri Aug 18
17:23:00 PDT 2017 x86_64 Intel(R) Atom(TM) CPU 330 @ 1.60GHz
GenuineIntel GNU/Linux
FileServer ~ # cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      : Intel(R) Atom(TM) CPU  330   @ 1.60GHz
stepping        : 2
microcode       : 0x20d
cpu MHz         : 1999.917
cache size      : 512 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts nopl cpuid aperfmperf pni dtes64
monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dtherm
bugs            :
bogomips        : 3999.83
clflush size    : 64
cache_alignment : 64
address sizes   : 32 bits physical, 48 bits virtual
power management: