======================================
| make[1]: Leaving directory '/home/virtme/testing-3/tools/testing/selftests/net'
| make: Leaving directory '/home/virtme/testing-3/tools/testing/selftests'
| xx__-> echo $?
| 0
| xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
unreferenced object 0x00042d20 (size 64):
comm "swapper/0", pid 0, jiffies 4294667296
hex dump (first 32 bytes on cpu 3):
00 00 00 00 00 00 00 00 00 00 06 00 00 00 00 00  ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
backtrace (crc 0):
pcpu_alloc_noprof (mm/percpu.c:1905) 
setup_zone_pageset (mm/page_alloc.c:5589) 
setup_per_cpu_pageset (mm/page_alloc.c:5655) 
start_kernel (init/main.c:1061) 
x86_64_start_reservations (arch/x86/kernel/head64.c:495) 
x86_64_start_kernel (arch/x86/kernel/head64.c:437 (discriminator 17)) 


Finger prints:
pcpu_alloc_noprof:setup_zone_pageset:setup_per_cpu_pageset:start_kernel:x86_64_start_reservations