======================================
| make: Leaving directory '/home/virtme/testing-22/tools/testing/selftests'
| xx__-> echo $?
| 0
| xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
| xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff8880073e4860 (size 32):
comm "sh", pid 460, jiffies 4294719840
hex dump (first 32 bytes):
90 3c 20 06 80 88 ff ff 90 86 69 a3 ff ff ff ff  .< .......i.....
08 15 ca 12 80 88 ff ff cc cc cc cc cc cc cc cc  ................
backtrace (crc 68284f35):
__kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4155 mm/slub.c:4200 mm/slub.c:4357) 
kmem_cache_free (mm/slub.c:2342 mm/slub.c:4646 mm/slub.c:4748) 
__put_anon_vma (mm/rmap.c:2757) 
unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
free_pgtables (mm/memory.c:392) 
exit_mmap (mm/mmap.c:1297) 
mmput (kernel/fork.c:1446 kernel/fork.c:1381 kernel/fork.c:1401) 
exit_mm (kernel/exit.c:590) 
do_exit (kernel/exit.c:943) 
do_group_exit (kernel/exit.c:1083) 
__x64_sys_exit_group (kernel/exit.c:1111) 
x64_sys_call (arch/x86/entry/syscall_64.c:37) 
do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
unreferenced object 0xffff8880073e4920 (size 32):
comm "sh", pid 460, jiffies 4294719840
hex dump (first 32 bytes):
b0 17 64 11 80 88 ff ff 90 86 69 a3 ff ff ff ff  ..d.......i.....
a8 02 ca 12 80 88 ff ff cc cc cc cc cc cc cc cc  ................
backtrace (crc 384c0970):
__kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4155 mm/slub.c:4200 mm/slub.c:4357) 
kmem_cache_free (mm/slub.c:2342 mm/slub.c:4646 mm/slub.c:4748) 
__put_anon_vma (mm/rmap.c:2757) 
unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
free_pgtables (mm/memory.c:392) 
exit_mmap (mm/mmap.c:1297) 
mmput (kernel/fork.c:1446 kernel/fork.c:1381 kernel/fork.c:1401) 
exit_mm (kernel/exit.c:590) 
do_exit (kernel/exit.c:943) 
do_group_exit (kernel/exit.c:1083) 
__x64_sys_exit_group (kernel/exit.c:1111) 
x64_sys_call (arch/x86/entry/syscall_64.c:37) 
do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 


Finger prints:
__kmalloc_cache_noprof:kmem_cache_free:__put_anon_vma:unlink_anon_vmas:free_pgtables