Output when running the testcase from the command line.  

sudo ./min_free_k
min_free_kbytes    0  TINFO  :  set overcommit_memory to 2
min_free_kbytes    0  TINFO  :  set min_free_kbytes to 3624
memfree is 2976072 kB before eatup mem
memfree is 80376 kB after eatup mem
min_free_kbytes    0  TINFO  :  set min_free_kbytes to 1513804
[  386.395436] Out of memory: Kill process 266 (upstart-udev-br) score 1 or sacrifice child
[  386.403632] Killed process 266 (upstart-udev-br) total-vm:1960kB, anon-rss:0kB, file-rss:0kB
[  386.555048] Out of memory: Kill process 424 (upstart-socket-) score 1 or sacrifice child
[  386.563195] Killed process 424 (upstart-socket-) total-vm:1892kB, anon-rss:0kB, file-rss:0kB
[  386.724271] Out of memory: Kill process 469 (dhclient3) score 1 or sacrifice child
[  386.731900] Killed process 469 (dhclient3) total-vm:1884kB, anon-rss:0kB, file-rss:0kB
[  387.914502] Out of memory: Kill process 669 (dbus-daemon) score 1 or sacrifice child
[  387.922307] Killed process 669 (dbus-daemon) total-vm:2324kB, anon-rss:0kB, file-rss:0kB
[  388.913183] Out of memory: Kill process 677 (rsyslogd) score 1 or sacrifice child
[  388.920719] Killed process 677 (rsyslogd) total-vm:30204kB, anon-rss:40kB, file-rss:100kB
[  388.984618] Out of memory: Kill process 690 (rs:main Q:Reg) score 1 or sacrifice child
[  388.992595] Killed process 690 (rs:main Q:Reg) total-vm:30204kB, anon-rss:240kB, file-rss:160kB
[  389.332725] Out of memory: Kill process 729 (getty) score 1 or sacrifice child
[  389.340002] Killed process 729 (getty) total-vm:3836kB, anon-rss:0kB, file-rss:8kB
[  389.912061] Out of memory: Kill process 738 (getty) score 1 or sacrifice child
[  389.919332] Killed process 738 (getty) total-vm:3836kB, anon-rss:0kB, file-rss:8kB
[  390.862432] Out of memory: Kill process 748 (getty) score 1 or sacrifice child
[  390.869715] Killed process 748 (getty) total-vm:3836kB, anon-rss:0kB, file-rss:8kB
[  391.033211] Out of memory: Kill process 751 (getty) score 1 or sacrifice child
[  391.040482] Killed process 751 (getty) total-vm:3836kB, anon-rss:0kB, file-rss:8kB
[  391.156255] Out of memory: Kill process 756 (getty) score 1 or sacrifice child
[  391.163504] Killed process 756 (getty) total-vm:3836kB, anon-rss:0kB, file-rss:8kB
[  391.276823] Out of memory: Kill process 768 (cron) score 1 or sacrifice child
[  391.283986] Killed process 768 (cron) total-vm:1836kB, anon-rss:0kB, file-rss:0kB
[  391.378061] Out of memory: Kill process 769 (atd) score 1 or sacrifice child
[  391.385146] Killed process 769 (atd) total-vm:1708kB, anon-rss:0kB, file-rss:0kB
[  391.496240] Out of memory: Kill process 772 (acpid) score 1 or sacrifice child
[  391.503489] Killed process 772 (acpid) total-vm:1328kB, anon-rss:0kB, file-rss:4kB
[  392.063055] Out of memory: Kill process 774 (irqbalance) score 1 or sacrifice child
[  392.070760] Killed process 774 (irqbalance) total-vm:2600kB, anon-rss:52kB, file-rss:172kB
[  392.132300] Out of memory: Kill process 781 (whoopsie) score 1 or sacrifice child
[  392.139831] Killed process 781 (whoopsie) total-vm:20500kB, anon-rss:252kB, file-rss:680kB
[  392.901843] Out of memory: Kill process 785 (getty) score 1 or sacrifice child
[  392.909115] Killed process 785 (getty) total-vm:3836kB, anon-rss:0kB, file-rss:8kB
[  393.981540] Out of memory: Kill process 787 (login) score 1 or sacrifice child
[  393.988817] Killed process 919 (bash) total-vm:9120kB, anon-rss:4kB, file-rss:16kB
[  394.912544] Out of memory: Kill process 787 (login) score 1 or sacrifice child
[  394.919819] Killed process 787 (login) total-vm:2808kB, anon-rss:68kB, file-rss:144kB
[  395.945755] Out of memory: Kill process 1060 (sudo) score 1 or sacrifice child
[  395.953027] Killed process 1061 (min_free_kbytes) total-vm:1352kB, anon-rss:48kB, file-rss:132kB
[  396.851644] Kernel panic - not syncing: Out of memory and no killable processes...
[  396.851650] 
[  396.860778] [<c0015bcc>] (unwind_backtrace+0x0/0xec) from [<c06d230c>] (dump_stack+0x20/0x24)
[  396.869350] [<c06d230c>] (dump_stack+0x20/0x24) from [<c06d2bfc>] (panic+0x64/0x19c)
[  396.877141] [<c06d2bfc>] (panic+0x64/0x19c) from [<c00e9438>] (out_of_memory+0x140/0x224)
[  396.885355] [<c00e9438>] (out_of_memory+0x140/0x224) from [<c00ec95c>] (__alloc_pages_nodemask+0x5c0/0x75c)
[  396.895146] [<c00ec95c>] (__alloc_pages_nodemask+0x5c0/0x75c) from [<c06d5820>] (kmem_getpages.isra.34+0x3c/0xc0)
[  396.905459] [<c06d5820>] (kmem_getpages.isra.34+0x3c/0xc0) from [<c06d593c>] (cache_grow.constprop.36+0x98/0x208)
[  396.915771] [<c06d593c>] (cache_grow.constprop.36+0x98/0x208) from [<c06d5ce8>] (cache_alloc_refill+0x23c/0x290)
[  396.925997] [<c06d5ce8>] (cache_alloc_refill+0x23c/0x290) from [<c011d6b0>] (kmem_cache_alloc+0x80/0x12c)
[  396.935611] [<c011d6b0>] (kmem_cache_alloc+0x80/0x12c) from [<c0133994>] (getname_flags+0x30/0x114)
[  396.944703] [<c0133994>] (getname_flags+0x30/0x114) from [<c0133a98>] (getname+0x20/0x24)
[  396.952922] [<c0133a98>] (getname+0x20/0x24) from [<c0127614>] (do_sys_open+0xb8/0x1e0)
[  396.960968] [<c0127614>] (do_sys_open+0xb8/0x1e0) from [<c012776c>] (sys_open+0x30/0x34)
[  396.969104] [<c012776c>] (sys_open+0x30/0x34) from [<c000da20>] (ret_fast_syscall+0x0/0x30)
[  396.977500] CPU1: stopping
[  396.980232] [<c0015bcc>] (unwind_backtrace+0x0/0xec) from [<c06d230c>] (dump_stack+0x20/0x24)
[  396.988790] [<c06d230c>] (dump_stack+0x20/0x24) from [<c0013718>] (handle_IPI+0x104/0x188)
[  396.997086] [<c0013718>] (handle_IPI+0x104/0x188) from [<c00084b4>] (do_IPI+0x18/0x1c)
[  397.005038] [<c00084b4>] (do_IPI+0x18/0x1c) from [<c06ea754>] (__irq_svc+0x34/0x100)
[  397.012806] Exception stack(0xf20d1c58 to 0xf20d1ca0)
[  397.017873] 1c40:                                                       00000000 00000000
[  397.026080] 1c60: 00000000 00000000 f20be540 f20e07a0 00000000 00000000 00000000 00000004
[  397.034287] 1c80: c0a755b0 f20d1d74 00000002 f20d1ca0 c0057dc8 c0057dfc 60070113 ffffffff
[  397.042497] [<c06ea754>] (__irq_svc+0x34/0x100) from [<c0057dfc>] (find_busiest_group+0x260/0x804)
[  397.051490] [<c0057dfc>] (find_busiest_group+0x260/0x804) from [<c0058444>] (load_balance+0xa4/0x3d4)
[  397.060743] [<c0058444>] (load_balance+0xa4/0x3d4) from [<c0058870>] (rebalance_domains+0xfc/0x194)
[  397.069822] [<c0058870>] (rebalance_domains+0xfc/0x194) from [<c00589a8>] (nohz_idle_balance+0xa0/0x10c)
[  397.079337] [<c00589a8>] (nohz_idle_balance+0xa0/0x10c) from [<c0058a6c>] (run_rebalance_domains+0x58/0x64)
[  397.089115] [<c0058a6c>] (run_rebalance_domains+0x58/0x64) from [<c006553c>] (__do_softirq+0x11c/0x230)
[  397.098542] [<c006553c>] (__do_softirq+0x11c/0x230) from [<c0065a58>] (irq_exit+0x58/0xa8)
[  397.106837] [<c0065a58>] (irq_exit+0x58/0xa8) from [<c0058c20>] (scheduler_ipi+0xf8/0x104)
[  397.115133] [<c0058c20>] (scheduler_ipi+0xf8/0x104) from [<c00136d8>] (handle_IPI+0xc4/0x188)
[  397.123689] [<c00136d8>] (handle_IPI+0xc4/0x188) from [<c00084b4>] (do_IPI+0x18/0x1c)
[  397.131549] [<c00084b4>] (do_IPI+0x18/0x1c) from [<c06ea754>] (__irq_svc+0x34/0x100)
[  397.139316] Exception stack(0xf20d1f18 to 0xf20d1f60)
[  397.144385] 1f00:                                                       0006c950 00001f40
[  397.152592] 1f20: 00000000 50218fac c2ac8180 00000000 00000000 00000000 c0a810cc 562f5842
[  397.160799] 1f40: 00000001 f20d1f84 1a826270 f20d1f60 c0089558 c0046964 20070013 ffffffff
[  397.169013] [<c06ea754>] (__irq_svc+0x34/0x100) from [<c0046964>] (armadaxp_enter_idle+0x78/0xac)
[  397.177924] [<c0046964>] (armadaxp_enter_idle+0x78/0xac) from [<c054b718>] (cpuidle_idle_call+0x17c/0x2c4)
[  397.187616] [<c054b718>] (cpuidle_idle_call+0x17c/0x2c4) from [<c000efc4>] (cpu_idle+0x88/0xdc)
[  397.196348] [<c000efc4>] (cpu_idle+0x88/0xdc) from [<c06cf414>] (secondary_start_kernel+0x130/0x154)
[  397.205513] [<c06cf414>] (secondary_start_kernel+0x130/0x154) from [<006ced94>] (0x6ced94)
[  397.213806] CPU2: stopping
[  397.216535] [<c0015bcc>] (unwind_backtrace+0x0/0xec) from [<c06d230c>] (dump_stack+0x20/0x24)
[  397.225092] [<c06d230c>] (dump_stack+0x20/0x24) from [<c0013718>] (handle_IPI+0x104/0x188)
[  397.233387] [<c0013718>] (handle_IPI+0x104/0x188) from [<c00084b4>] (do_IPI+0x18/0x1c)
[  397.241336] [<c00084b4>] (do_IPI+0x18/0x1c) from [<c06ea754>] (__irq_svc+0x34/0x100)
[  397.249103] Exception stack(0xef515b10 to 0xef515b58)
[  397.254172] 5b00:                                     c0b7454c 800f0013 00000000 00000001
[  397.262380] 5b20: c0b7454c ef41f000 ef41f000 00000001 00000000 ef515cc0 00000000 ef515b6c
[  397.270585] 5b40: ef515b58 ef515b58 c012ac40 c012ac40 600f0013 ffffffff
[  397.277228] [<c06ea754>] (__irq_svc+0x34/0x100) from [<c012ac40>] (put_super+0x24/0x48)
[  397.285262] [<c012ac40>] (put_super+0x24/0x48) from [<c012ad54>] (drop_super+0x28/0x2c)
[  397.293296] [<c012ad54>] (drop_super+0x28/0x2c) from [<c012b7a4>] (prune_super+0x158/0x164)
[  397.301681] [<c012b7a4>] (prune_super+0x158/0x164) from [<c00f4b30>] (shrink_slab+0xa8/0x33c)
[  397.310239] [<c00f4b30>] (shrink_slab+0xa8/0x33c) from [<c00f7590>] (do_try_to_free_pages+0x174/0x2e0)
[  397.319580] [<c00f7590>] (do_try_to_free_pages+0x174/0x2e0) from [<c00f793c>] (try_to_free_pages+0xdc/0x140)
[  397.329446] [<c00f793c>] (try_to_free_pages+0xdc/0x140) from [<c00ec83c>] (__alloc_pages_nodemask+0x4a0/0x75c)
[  397.339484] [<c00ec83c>] (__alloc_pages_nodemask+0x4a0/0x75c) from [<c00e6738>] (find_or_create_page+0x50/0x94)
[  397.349615] [<c00e6738>] (find_or_create_page+0x50/0x94) from [<c01573ac>] (grow_dev_page+0x44/0x170)
[  397.358869] [<c01573ac>] (grow_dev_page+0x44/0x170) from [<c015805c>] (__getblk_slow+0x138/0x194)
[  397.367774] [<c015805c>] (__getblk_slow+0x138/0x194) from [<c0158104>] (__getblk+0x4c/0x54)
[  397.376161] [<c0158104>] (__getblk+0x4c/0x54) from [<c020f964>] (jbd2_journal_get_descriptor_buffer+0x44/0xa4)
[  397.386199] [<c020f964>] (jbd2_journal_get_descriptor_buffer+0x44/0xa4) from [<c0209010>] (jbd2_journal_commit_transaction+0x534/0x1140)
[  397.398501] [<c0209010>] (jbd2_journal_commit_transaction+0x534/0x1140) from [<c020d698>] (kjournald2+0xc8/0x248)
[  397.408803] [<c020d698>] (kjournald2+0xc8/0x248) from [<c007e8ac>] (kthread+0x98/0xa0)
[  397.416753] [<c007e8ac>] (kthread+0x98/0xa0) from [<c000eca0>] (kernel_thread_exit+0x0/0x8)
[  397.425132] CPU0: stopping
[  397.427861] [<c0015bcc>] (unwind_backtrace+0x0/0xec) from [<c06d230c>] (dump_stack+0x20/0x24)
[  397.436419] [<c06d230c>] (dump_stack+0x20/0x24) from [<c0013718>] (handle_IPI+0x104/0x188)
[  397.444714] [<c0013718>] (handle_IPI+0x104/0x188) from [<c00084b4>] (do_IPI+0x18/0x1c)
[  397.452662] [<c00084b4>] (do_IPI+0x18/0x1c) from [<c06ea754>] (__irq_svc+0x34/0x100)
[  397.460429] Exception stack(0xc0a73ef0 to 0xc0a73f38)
[  397.465498] 3ee0:                                     0006c957 00001f40 00000000 50218fac
[  397.473704] 3f00: c2ac0180 00000000 00000000 00000000 c0a810cc 562f5842 00000000 c0a73f5c
[  397.481909] 3f20: 1a827d40 c0a73f38 c0089558 c0046964 200f0013 ffffffff
[  397.488554] [<c06ea754>] (__irq_svc+0x34/0x100) from [<c0046964>] (armadaxp_enter_idle+0x78/0xac)
[  397.497461] [<c0046964>] (armadaxp_enter_idle+0x78/0xac) from [<c054b718>] (cpuidle_idle_call+0x17c/0x2c4)
[  397.507152] [<c054b718>] (cpuidle_idle_call+0x17c/0x2c4) from [<c000efc4>] (cpu_idle+0x88/0xdc)
[  397.515884] [<c000efc4>] (cpu_idle+0x88/0xdc) from [<c06c30fc>] (rest_init+0x6c/0x84)
[  397.523748] [<c06c30fc>] (rest_init+0x6c/0x84) from [<c0a0985c>] (start_kernel+0x2f0/0x350)