======================================
| xx__-> echo $?
| 0
| xx__-> [  313.830907][ T1471] sh (1471) used greatest stack depth: 23424 bytes left
| [  316.154740][ T1030] iperf3 invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
[  316.155785][ T1030] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  316.155791][ T1030] Call Trace:
[  316.155794][ T1030]  <TASK>
[ 316.155796][ T1030] dump_stack_lvl (lib/dump_stack.c:123) 
[ 316.155818][ T1030] dump_header (mm/oom_kill.c:74 mm/oom_kill.c:468) 
[ 316.155831][ T1030] oom_kill_process (mm/oom_kill.c:1041) 
[ 316.155838][ T1030] out_of_memory (mm/oom_kill.c:1180 (discriminator 4)) 
[ 316.155844][ T1030] ? __pfx_out_of_memory (mm/oom_kill.c:1113) 
[ 316.155858][ T1030] __alloc_pages_may_oom (mm/page_alloc.c:3645) 
[ 316.155866][ T1030] ? __pfx___alloc_pages_may_oom (mm/page_alloc.c:3577) 
[ 316.155887][ T1030] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4433) 
[ 316.155900][ T1030] ? get_page_from_freelist (mm/page_alloc.c:3235 mm/page_alloc.c:3430) 
[ 316.155905][ T1030] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4206) 
[ 316.155923][ T1030] __alloc_frozen_pages_noprof (mm/page_alloc.c:4753) 
[ 316.155928][ T1030] ? __pfx___alloc_frozen_pages_noprof (mm/page_alloc.c:4706) 
[ 316.155931][ T1030] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 316.155948][ T1030] ? filemap_get_entry (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 mm/filemap.c:1878) 
[ 316.155961][ T1030] alloc_pages_mpol (mm/mempolicy.c:2272) 
[ 316.155969][ T1030] ? __pfx_alloc_pages_mpol (mm/mempolicy.c:2227) 
[ 316.155977][ T1030] ? down_read (kernel/locking/rwsem.c:1247 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) 
[ 316.155988][ T1030] folio_alloc_noprof (mm/mempolicy.c:2361 mm/mempolicy.c:2371) 
[ 316.155993][ T1030] __filemap_get_folio (mm/filemap.c:1970) 
[ 316.156003][ T1030] filemap_fault (mm/filemap.c:3456) 
[ 316.156012][ T1030] ? do_fault_around (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 mm/memory.c:5371) 
[ 316.156018][ T1030] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 316.156023][ T1030] ? __pfx_filemap_fault (mm/filemap.c:3405) 
[ 316.156035][ T1030] ? do_fault_around (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 mm/memory.c:5371) 
[ 316.156039][ T1030] ? __pfx_filemap_map_pages (mm/filemap.c:3766) 
[ 316.156048][ T1030] __do_fault (mm/memory.c:4990) 
[ 316.156055][ T1030] do_pte_missing (mm/memory.c:5410 mm/memory.c:5544 mm/memory.c:4060) 
[ 316.156058][ T1030] ? handle_pte_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/pgtable.h:136 mm/memory.c:5901) 
[ 316.156067][ T1030] handle_pte_fault (mm/memory.c:5907) 
[ 316.156074][ T1030] ? __pfx_handle_pte_fault (mm/memory.c:5864) 
[ 316.156089][ T1030] __handle_mm_fault (mm/memory.c:6050) 
[ 316.156095][ T1030] ? __pfx___handle_mm_fault (mm/memory.c:5959) 
[ 316.156112][ T1030] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 316.156117][ T1030] ? __pfx_lock_vma_under_rcu (mm/memory.c:6375) 
[ 316.156126][ T1030] handle_mm_fault (mm/memory.c:6231) 
[ 316.156131][ T1030] ? __pfx_handle_mm_fault (mm/memory.c:6186) 
[ 316.156138][ T1030] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 316.156141][ T1030] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1416) 
[ 316.156154][ T1030] do_user_addr_fault (arch/x86/mm/fault.c:1337) 
[ 316.156168][ T1030] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:147 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 316.156174][ T1030] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[  316.156179][ T1030] RIP: 0033:0x7f0078a72c5f
[ 316.156193][ T1030] Code: Unable to access opcode bytes at 0x7f0078a72c35.

Code starting with the faulting instruction
===========================================
[  316.156194][ T1030] RSP: 002b:00007f0070865d50 EFLAGS: 00010202
[  316.156198][ T1030] RAX: 0000000000020000 RBX: 000055ca7f4642a0 RCX: 00007f0078992baf
[  316.156200][ T1030] RDX: 000055ca7f469470 RSI: 00007f0078076000 RDI: 0000000000000002
[  316.156202][ T1030] RBP: 0000000000000001 R08: 0000000000000002 R09: 00007ffee6d976bf
[  316.156204][ T1030] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001


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