======================================
| make: Leaving directory '/home/virtme/testing-22/tools/testing/selftests'
| xx__-> echo $?
| 0
| xx__-> [  321.647890][ T1223] iperf3 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=0
[  321.649117][ T1223] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  321.649120][ T1223] Call Trace:
[  321.649122][ T1223]  <TASK>
[ 321.649125][ T1223] dump_stack_lvl (lib/dump_stack.c:123) 
[ 321.649135][ T1223] dump_header (mm/oom_kill.c:74 mm/oom_kill.c:468) 
[ 321.649147][ T1223] oom_kill_process (mm/oom_kill.c:1041) 
[ 321.649153][ T1223] out_of_memory (mm/oom_kill.c:1180 (discriminator 4)) 
[ 321.649159][ T1223] ? __pfx_out_of_memory (mm/oom_kill.c:1113) 
[ 321.649172][ T1223] __alloc_pages_may_oom (mm/page_alloc.c:3820) 
[ 321.649179][ T1223] ? __pfx___alloc_pages_may_oom (mm/page_alloc.c:3752) 
[ 321.649198][ T1223] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4622) 
[ 321.649212][ T1223] ? get_page_from_freelist (mm/page_alloc.c:3405 mm/page_alloc.c:3605) 
[ 321.649217][ T1223] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4390) 
[ 321.649228][ T1223] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 321.649238][ T1223] __alloc_frozen_pages_noprof (mm/page_alloc.c:4947) 
[ 321.649244][ T1223] ? __pfx___alloc_frozen_pages_noprof (mm/page_alloc.c:4900) 
[ 321.649256][ T1223] ? trace_kmem_cache_alloc (./include/trace/events/kmem.h:12 (discriminator 21)) 
[ 321.649261][ T1223] ? kmem_cache_alloc_node_noprof (mm/slub.c:4257) 
[ 321.649266][ T1223] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 321.649274][ T1223] alloc_pages_mpol (mm/mempolicy.c:2303) 
[ 321.649281][ T1223] ? __pfx_alloc_pages_mpol (mm/mempolicy.c:2258) 
[ 321.649287][ T1223] ? __alloc_skb (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/refcount.h:134 net/core/skbuff.c:692) 
[ 321.649300][ T1223] alloc_pages_noprof (mm/mempolicy.c:2372 mm/mempolicy.c:2392) 
[ 321.649307][ T1223] skb_page_frag_refill (net/core/sock.c:3109 net/core/sock.c:3084) 
[ 321.649314][ T1223] sk_page_frag_refill (net/core/sock.c:3120) 
[ 321.649322][ T1223] tcp_sendmsg_locked (net/ipv4/tcp.c:1206) 
[ 321.649345][ T1223] ? __pfx_tcp_sendmsg_locked (net/ipv4/tcp.c:1061) 
[ 321.649353][ T1223] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 321.649365][ T1223] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 321.649374][ T1223] tcp_sendmsg (net/ipv4/tcp.c:1367) 
[ 321.649380][ T1223] sock_write_iter (net/socket.c:712 net/socket.c:727 net/socket.c:1131) 
[ 321.649385][ T1223] ? __pfx_sock_write_iter (net/socket.c:1115) 
[ 321.649403][ T1223] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 321.649412][ T1223] vfs_write (fs/read_write.c:591 fs/read_write.c:684) 
[ 321.649419][ T1223] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 321.649423][ T1223] ? __pfx_vfs_write (fs/read_write.c:665) 
[ 321.649431][ T1223] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/file.c:1057) 
[ 321.649450][ T1223] ksys_write (fs/read_write.c:736) 
[ 321.649452][ T1223] ? xfd_validate_state (arch/x86/kernel/fpu/xstate.c:1422 arch/x86/kernel/fpu/xstate.c:1466) 
[ 321.649458][ T1223] ? __pfx_ksys_write (fs/read_write.c:726) 
[ 321.649470][ T1223] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 321.649477][ T1223] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  321.649481][ T1223] RIP: 0033:0x7fdfb18f5baf
[ 321.649490][ T1223] Code: Unable to access opcode bytes at 0x7fdfb18f5b85.

Code starting with the faulting instruction
===========================================
[  321.649492][ T1223] RSP: 002b:00007fdfa9fc9cd0 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  321.649495][ T1223] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007fdfb18f5baf
[  321.649498][ T1223] RDX: 0000000000020000 RSI: 00007fdfb0ff9000 RDI: 0000000000000021
[  321.649499][ T1223] RBP: 00007fdfb0ff9000 R08: 0000000000000002 R09: 00007fffb38aed2f
[  321.649501][ T1223] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000021


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