======================================
| xx__-> echo $?
| 0
| xx__-> [  223.732276][ T1999] dirname (1999) used greatest stack depth: 23488 bytes left
| [  225.141809][ T1272] iperf3 invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
[  225.142544][ T1272] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  225.142546][ T1272] Call Trace:
[  225.142548][ T1272]  <TASK>
[ 225.142551][ T1272] dump_stack_lvl (lib/dump_stack.c:123) 
[ 225.142560][ T1272] dump_header (mm/oom_kill.c:74 mm/oom_kill.c:468) 
[ 225.142567][ T1272] oom_kill_process (mm/oom_kill.c:1041) 
[ 225.142572][ T1272] out_of_memory (mm/oom_kill.c:1180 (discriminator 4)) 
[ 225.142576][ T1272] ? __pfx_out_of_memory (mm/oom_kill.c:1113) 
[ 225.142584][ T1272] __alloc_pages_may_oom (mm/page_alloc.c:3642) 
[ 225.142591][ T1272] ? __pfx___alloc_pages_may_oom (mm/page_alloc.c:3574) 
[ 225.142603][ T1272] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4430) 
[ 225.142612][ T1272] ? get_page_from_freelist (mm/page_alloc.c:3232 mm/page_alloc.c:3427) 
[ 225.142616][ T1272] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4203) 
[ 225.142627][ T1272] __alloc_frozen_pages_noprof (mm/page_alloc.c:4750) 
[ 225.142631][ T1272] ? __pfx___alloc_frozen_pages_noprof (mm/page_alloc.c:4703) 
[ 225.142637][ T1272] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 225.142643][ T1272] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 225.142648][ T1272] ? filemap_get_entry (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/filemap.c:1889) 
[ 225.142655][ T1272] alloc_pages_mpol (mm/mempolicy.c:2303) 
[ 225.142662][ T1272] ? __pfx_alloc_pages_mpol (mm/mempolicy.c:2258) 
[ 225.142668][ T1272] ? down_read (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2629 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3224 kernel/locking/rwsem.c:176 kernel/locking/rwsem.c:181 kernel/locking/rwsem.c:256 kernel/locking/rwsem.c:248 kernel/locking/rwsem.c:1247 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) 
[ 225.142675][ T1272] folio_alloc_noprof (mm/mempolicy.c:2392 mm/mempolicy.c:2402) 
[ 225.142678][ T1272] __filemap_get_folio (mm/filemap.c:1981) 
[ 225.142684][ T1272] filemap_fault (mm/filemap.c:3424) 
[ 225.142690][ T1272] ? __pfx_filemap_map_pages (mm/filemap.c:3703) 
[ 225.142694][ T1272] ? __pfx_filemap_fault (mm/filemap.c:3373) 
[ 225.142697][ T1272] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 225.142701][ T1272] ? do_fault_around (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/memory.c:5370) 
[ 225.142706][ T1272] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 225.142710][ T1272] ? do_fault_around (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/memory.c:5370) 
[ 225.142717][ T1272] __do_fault (mm/memory.c:4989) 
[ 225.142722][ T1272] do_pte_missing (mm/memory.c:5409 mm/memory.c:5543 mm/memory.c:4059) 
[ 225.142725][ T1272] ? handle_pte_fault (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/linux/pgtable.h:136 mm/memory.c:5882) 
[ 225.142730][ T1272] handle_pte_fault (mm/memory.c:5888) 
[ 225.142733][ T1272] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 225.142737][ T1272] ? __pfx_handle_pte_fault (mm/memory.c:5845) 
[ 225.142742][ T1272] ? reacquire_held_locks (kernel/locking/lockdep.c:5383) 
[ 225.142748][ T1272] __handle_mm_fault (mm/memory.c:6031) 
[ 225.142752][ T1272] ? __pfx___handle_mm_fault (mm/memory.c:5940) 
[ 225.142755][ T1272] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/memory.c:6387) 
[ 225.142765][ T1272] ? __pfx_lock_vma_under_rcu (mm/memory.c:6356) 
[ 225.142770][ T1272] handle_mm_fault (mm/memory.c:6212) 
[ 225.142774][ T1272] ? __pfx_handle_mm_fault (mm/memory.c:6167) 
[ 225.142778][ T1272] ? __rseq_handle_notify_resume (kernel/rseq.c:442) 
[ 225.142781][ T1272] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1416) 
[ 225.142788][ T1272] do_user_addr_fault (arch/x86/mm/fault.c:1337) 
[ 225.142797][ T1272] 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) 
[ 225.142802][ T1272] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[  225.142806][ T1272] RIP: 0033:0x7ff7655a6a20
[ 225.142812][ T1272] Code: Unable to access opcode bytes at 0x7ff7655a69f6.

Code starting with the faulting instruction
===========================================
[  225.142814][ T1272] RSP: 002b:00007ff75fb95d50 EFLAGS: 00010206
[  225.142817][ T1272] RAX: 000000000000bcb8 RBX: 000000000000bcb8 RCX: 00007ff7654bdb0c
[  225.142819][ T1272] RDX: 000000000000bcb8 RSI: 00007ff764c55348 RDI: 0000000000000002
[  225.142821][ T1272] RBP: 00007ff764c55348 R08: 0000000000000002 R09: 00007ffe3d80bf1f
[  225.142822][ T1272] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000020000


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