The issue can be fixed by disabling 'ARM64_DT_NUMA', so it is definitley caused
by the following commit:
commit ecbd5d083f9d668436cd0cc18f06094233c1c336
Author: Ganapatrao Kulkarni <gkulka...@caviumnetworks.com>
Date: Fri Sep 18 15:44:40 2015 -0600
UBUNTU: SAUCE: arm64, numa, dt: adding dt based numa support using
dt node property arm, as
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https://bugs.launchpad.net/bugs/1509221
Title:
wily: arm64: warning in numa_init() during booting
Status in linux package in Ubuntu:
Confirmed
Bug description:
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at
/build/linux-vmnY7Y/linux-4.2.0/arch/arm64/mm/numa.c:449 numa_init+0x90/0x398()
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.2.0-16-generic
#19-Ubuntu
[ 0.000000] Hardware name: APM X-Gene Merlin board (DT)
[ 0.000000] Call trace:
[ 0.000000] [<ffffffc00008ab90>] dump_backtrace+0x0/0x178
[ 0.000000] [<ffffffc00008ad28>] show_stack+0x20/0x30
[ 0.000000] [<ffffffc0008a41d8>] dump_stack+0x7c/0x98
[ 0.000000] [<ffffffc0000bf9e8>] warn_slowpath_common+0xa0/0xe0
[ 0.000000] [<ffffffc0000bfbb0>] warn_slowpath_null+0x38/0x50
[ 0.000000] [<ffffffc000c3de84>] numa_init+0x8c/0x398
[ 0.000000] [<ffffffc000c3e1c0>] arm64_numa_init+0x30/0x40
[ 0.000000] [<ffffffc000c3ce20>] bootmem_init+0x74/0x12c
[ 0.000000] [<ffffffc000c3d5b0>] paging_init+0x198/0x224
[ 0.000000] [<ffffffc000c3a028>] setup_arch+0x284/0x624
[ 0.000000] [<ffffffc000c36718>] start_kernel+0xf0/0x424
[ 0.000000] ---[ end trace f24b6c88ae00fa9a ]---
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