======================================
| 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
| xx__-> [  292.667666][ T1211] iperf3 invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
[  292.668884][ T1211] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  292.668886][ T1211] Call Trace:
[  292.668889][ T1211]  <TASK>
[ 292.668891][ T1211] dump_stack_lvl (lib/dump_stack.c:123) 
[ 292.668904][ T1211] dump_header (mm/oom_kill.c:74 mm/oom_kill.c:468) 
[ 292.668916][ T1211] oom_kill_process (mm/oom_kill.c:1041) 
[ 292.668923][ T1211] out_of_memory (mm/oom_kill.c:1180 (discriminator 4)) 
[ 292.668928][ T1211] ? __pfx_out_of_memory (mm/oom_kill.c:1113) 
[ 292.668940][ T1211] __alloc_pages_may_oom (mm/page_alloc.c:3816) 
[ 292.668949][ T1211] ? __pfx___alloc_pages_may_oom (mm/page_alloc.c:3748) 
[ 292.668967][ T1211] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4618) 
[ 292.668978][ T1211] ? get_page_from_freelist (mm/page_alloc.c:3401 mm/page_alloc.c:3601) 
[ 292.668983][ T1211] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4386) 
[ 292.668998][ T1211] __alloc_frozen_pages_noprof (mm/page_alloc.c:4943) 
[ 292.669003][ T1211] ? __pfx___alloc_frozen_pages_noprof (mm/page_alloc.c:4896) 
[ 292.669010][ T1211] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 292.669019][ T1211] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 292.669025][ T1211] ? filemap_get_entry (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/filemap.c:1877) 
[ 292.669035][ T1211] alloc_pages_mpol (mm/mempolicy.c:2303) 
[ 292.669042][ T1211] ? __pfx_alloc_pages_mpol (mm/mempolicy.c:2258) 
[ 292.669050][ T1211] ? down_read (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1255 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) 
[ 292.669060][ T1211] folio_alloc_noprof (mm/mempolicy.c:2392 mm/mempolicy.c:2402) 
[ 292.669064][ T1211] __filemap_get_folio (mm/filemap.c:1969) 
[ 292.669072][ T1211] filemap_fault (mm/filemap.c:3412) 
[ 292.669081][ T1211] ? __pfx_filemap_map_pages (mm/filemap.c:3691) 
[ 292.669086][ T1211] ? __pfx_filemap_fault (mm/filemap.c:3361) 
[ 292.669090][ T1211] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 292.669095][ T1211] ? do_fault_around (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/memory.c:5479) 
[ 292.669101][ T1211] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 292.669107][ T1211] ? do_fault_around (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/memory.c:5479) 
[ 292.669114][ T1211] __do_fault (mm/memory.c:5098) 
[ 292.669121][ T1211] do_pte_missing (mm/memory.c:5518 mm/memory.c:5652 mm/memory.c:4160) 
[ 292.669125][ T1211] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 292.669131][ T1211] handle_pte_fault (mm/memory.c:5997) 
[ 292.669139][ T1211] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 292.669144][ T1211] ? reacquire_held_locks (kernel/locking/lockdep.c:5383) 
[ 292.669146][ T1211] ? do_user_addr_fault (arch/x86/mm/fault.c:1328) 
[ 292.669160][ T1211] __handle_mm_fault (mm/memory.c:6140) 
[ 292.669164][ T1211] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 292.669167][ T1211] ? __lock_release (kernel/locking/lockdep.c:5580) 
[ 292.669183][ T1211] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 292.669190][ T1211] handle_mm_fault (mm/memory.c:6321) 
[ 292.669194][ T1211] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 292.669199][ T1211] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) 
[ 292.669210][ T1211] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 292.669217][ T1211] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 292.669226][ T1211] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 292.669233][ T1211] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[  292.669237][ T1211] RIP: 0033:0x7f86d56f3b0c
[ 292.669245][ T1211] Code: Unable to access opcode bytes at 0x7f86d56f3ae2.

Code starting with the faulting instruction
===========================================
[  292.669247][ T1211] RSP: 002b:00007f86ce5c8d20 EFLAGS: 00010246
[  292.669251][ T1211] RAX: 0000000000003474 RBX: 0000000000003474 RCX: 00007f86d56f3b0c
[  292.669253][ T1211] RDX: 0000000000003474 RSI: 00007f86d4e33b8c RDI: 0000000000000020
[  292.669254][ T1211] RBP: 00007f86d4e33b8c R08: 0000000000000002 R09: 00007ffdeb5ace3f
[  292.669256][ T1211] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000020000


Finger prints:
dump_header:oom_kill_process:out_of_memory:__alloc_pages_may_oom:__alloc_frozen_pages_noprof