Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c

From: Hillf Danton
Date: Sat Nov 08 2014 - 23:48:10 EST

> > Can you please try the following patch?
> > --- a/mm/compaction.c
> > +++ b/mm/compaction.c
> > @@ -1325,13 +1325,6 @@ unsigned long try_to_compact_pages(struct zonelist
> > - compaction_defer_reset(zone, order, false);
>
> NACK :(
>
> I just got again into a state that some task was spinning out of control, and
> blocking the rest of the desktop.
>
Would you please try the diff(against 3.18-rc3) if no other progress?

--- a/mm/compaction.c Sun Nov 9 12:02:59 2014
+++ b/mm/compaction.c Sun Nov 9 12:07:30 2014
@@ -1070,12 +1070,12 @@ static int compact_finished(struct zone
if (cc->order == -1)
return COMPACT_CONTINUE;

- /* Compaction run is not finished if the watermark is not met */
+ /* Compaction run is skipped if the watermark is not met */
watermark = low_wmark_pages(zone);
watermark += (1 << cc->order);

if (!zone_watermark_ok(zone, cc->order, watermark, 0, 0))
- return COMPACT_CONTINUE;
+ return COMPACT_SKIPPED;

/* Direct compactor: Is a suitable page free? */
for (order = cc->order; order < MAX_ORDER; order++) {
--

> You will see me trying a few things, apparently the first OOM managed to
> unblock something, but a few seconds later the system "stepped" on some other
> blocking task.
>
> See attached log, it may only give you some hint; the problem could well be in
> some other part of the kernel.
>
> In the meanwhile, I'm pulling linus/master ...
>
> SysRq : Show backtrace of all active CPUs
> sending NMI to all CPUs:
> NMI backtrace for cpu 1
> CPU: 1 PID: 13544 Comm: python Not tainted 3.18.0-rc3+ #46
> Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
> task: ffff88000c78ee40 ti: ffff88000e5f8000 task.ti: ffff88000e5f8000
> RIP: 0010:[<ffffffff811df888>] [<ffffffff811df888>] delay_tsc+0x28/0xa2
> RSP: 0000:ffff8800bf303b28 EFLAGS: 00000002
> RAX: 000000006bd322e8 RBX: 0000000000002710 RCX: 0000000000000007
> RDX: 000000000000021d RSI: ffffffff8151623e RDI: ffffffff8152fea5
> RBP: ffff8800bf303b48 R08: 0000000000000400 R09: 00000000ffffffff
> R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000185ac0
> R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff81668f90
> FS: 00007f1570ed1700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00007f7cd966b000 CR3: 00000000740c9000 CR4: 00000000000007e0
> Stack:
> 0000000000002710 0000000000000003 000000000000006c 0000000000000001
> ffff8800bf303b58 ffffffff811df814 ffff8800bf303b68 ffffffff811df83d
> ffff8800bf303b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
> Call Trace:
> <IRQ>
>
> [<ffffffff811df814>] __delay+0xa/0xc
> [<ffffffff811df83d>] __const_udelay+0x27/0x29
> [<ffffffff81025de1>] arch_trigger_all_cpu_backtrace+0xa8/0xd2
> [<ffffffff8126bc4f>] sysrq_handle_showallcpus+0xe/0x10
> [<ffffffff8126c186>] __handle_sysrq+0x94/0x126
> [<ffffffff8126c329>] sysrq_filter+0xee/0x287
> [<ffffffff812c0fd8>] input_to_handler+0x5e/0xcb
> [<ffffffff812c1de2>] input_pass_values.part.3+0x76/0x134
> [<ffffffff812c3eae>] input_handle_event+0x457/0x46d
> [<ffffffff812c3f19>] input_event+0x55/0x6f
> [<ffffffff812c6fb5>] input_sync+0xf/0x11
> [<ffffffff812c7f47>] atkbd_interrupt+0x4d5/0x595
> [<ffffffff812bf2c3>] serio_interrupt+0x43/0x7d
> [<ffffffff812bfa2e>] i8042_interrupt+0x292/0x2a8
> [<ffffffff8108b64b>] ? tick_sched_do_timer+0x33/0x33
> [<ffffffff810729a6>] handle_irq_event_percpu+0x44/0x19f
> [<ffffffff81072b3d>] handle_irq_event+0x3c/0x5c
> [<ffffffff81025e49>] ? apic_eoi+0x18/0x1a
> [<ffffffff810752b2>] handle_edge_irq+0x95/0xae
> [<ffffffff81004679>] handle_irq+0x158/0x16d
> [<ffffffff8105683f>] ? get_parent_ip+0xe/0x3e
> [<ffffffff81003f71>] do_IRQ+0x58/0xda
> [<ffffffff813ba1ea>] common_interrupt+0x6a/0x6a
> <EOI>
>
> [<ffffffff810ee503>] ? rcu_read_unlock_sched_notrace+0x17/0x17
> [<ffffffff810ef46a>] ? compact_zone+0x2a8/0x4b2
> [<ffffffff810ef6c0>] compact_zone_order+0x4c/0x5f
> [<ffffffff810ef87f>] try_to_compact_pages+0xc4/0x1d6
> [<ffffffff813b3118>] __alloc_pages_direct_compact+0x61/0x1bf
> [<ffffffff810da3e1>] __alloc_pages_nodemask+0x409/0x799
> [<ffffffff810fdd84>] ? anon_vma_prepare+0xf5/0x12c
> [<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
> [<ffffffff810faa65>] ? mmap_region+0x171/0x458
> [<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
> [<ffffffff8102dced>] __do_page_fault+0x27a/0x358
> [<ffffffff810fb004>] ? do_mmap_pgoff+0x2b8/0x306
> [<ffffffff810e88dd>] ? vm_mmap_pgoff+0x82/0xaa
> [<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
> [<ffffffff8102ddf8>] do_page_fault+0xc/0xe
> [<ffffffff813bb162>] page_fault+0x22/0x30
> Code: ff 5d c3 55 48 89 e5 41 56 41 55 41 54 41 89 fc bf 01 00 00 00 53 e8 f7 6f e7 ff e8 9a 9c 00 00 41 89 c5 0f 1f 00 0f ae e8 0f 31 <89> c3 0f
> 1f 00 0f ae e8 0f 31 48 c1 e2 20 89 c0 48 09 c2 41 89
> NMI backtrace for cpu 0
> CPU: 0 PID: 13788 Comm: net_applet Not tainted 3.18.0-rc3+ #46
> Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
> task: ffff8800067a3720 ti: ffff88000e20c000 task.ti: ffff88000e20c000
> RIP: 0010:[<ffffffff810ef586>] [<ffffffff810ef586>] compact_zone+0x3c4/0x4b2
> RSP: 0000:ffff88000e20fa18 EFLAGS: 00000202
> RAX: 00000000ffffffff RBX: ffffffff8168be40 RCX: 0000000000000008
> RDX: 0000000000000380 RSI: 0000000000000009 RDI: ffffffff8168be40
> RBP: ffff88000e20fa78 R08: 0000000000000000 R09: fffffffffffffef5
> R10: 0000000000000038 R11: ffffffff8168be40 R12: 00000000000bf800
> R13: 00000000000bf600 R14: ffff88000e20fa98 R15: 0000160000000000
> FS: 00007ff9cbe92700(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00007ff3a52f0000 CR3: 000000000af17000 CR4: 00000000000007f0
> Stack:
> ffff88000e20fa18 ffffea0002fd0000 0000000000000020 ffff8800067a3720
> 0000000000000004 ffff88000e20faa8 0000000000000000 0000000000000000
> 0000000000000009 ffff88000e20fccc 0000000000000002 0000000000000000
> Call Trace:
> [<ffffffff810ef6c0>] compact_zone_order+0x4c/0x5f
> [<ffffffff810ef87f>] try_to_compact_pages+0xc4/0x1d6
> [<ffffffff813b3118>] __alloc_pages_direct_compact+0x61/0x1bf
> [<ffffffff810da3e1>] __alloc_pages_nodemask+0x409/0x799
> [<ffffffff810d458c>] ? unlock_page+0x1f/0x23
> [<ffffffff81116903>] do_huge_pmd_wp_page+0x127/0x4eb
> [<ffffffff810f65fc>] handle_mm_fault+0x151/0x808
> [<ffffffff8102dced>] __do_page_fault+0x27a/0x358
> [<ffffffff8102ddf8>] ? do_page_fault+0xc/0xe
> [<ffffffff813bb162>] ? page_fault+0x22/0x30
> [<ffffffff811e0740>] ? __put_user_4+0x20/0x30
> [<ffffffff8102ddf8>] do_page_fault+0xc/0xe
> [<ffffffff813bb162>] page_fault+0x22/0x30
> Code: 8b 7b 08 44 89 e6 ff 13 48 83 c3 10 48 83 3b 00 eb eb 41 83 7e 40 01 4d 8b 6e 38 19 c0 89 45 c0 4d 8d a5 00 02 00 00 83 65 c0 04 <49>
> 81 e4 00 fe ff ff e9 b2 fe ff ff 41 80 7e 44 00 74 09 41 83
>
> SysRq : Changing Loglevel
> Loglevel set to 8
>
> SysRq : Show backtrace of all active CPUs
> sending NMI to all CPUs:
> NMI backtrace for cpu 1
> CPU: 1 PID: 13544 Comm: python Not tainted 3.18.0-rc3+ #46
> Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
> task: ffff88000c78ee40 ti: ffff88000e5f8000 task.ti: ffff88000e5f8000
> RIP: 0010:[<ffffffff811df817>] [<ffffffff811df817>] __const_udelay+0x1/0x29
> RSP: 0000:ffff8800bf303b68 EFLAGS: 00000006
> RAX: 0000000000000000 RBX: 0000000000002710 RCX: 0000000000000007
> RDX: 0000000080010003 RSI: 0000000000000c00 RDI: 0000000000418958
> RBP: ffff8800bf303b88 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
> R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
> FS: 00007f1570ed1700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00007f7cd966b000 CR3: 00000000740c9000 CR4: 00000000000007e0
> Stack:
> ffff8800bf303b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
> ffff8800bf303b98 ffffffff8126bc4f ffff8800bf303bc8 ffffffff8126c186
> ffff88003781c200 0000000000000001 0000000000000026 ffff88003781c201
> Call Trace:
> <IRQ>
>
> [<ffffffff81025de1>] ? arch_trigger_all_cpu_backtrace+0xa8/0xd2
> [<ffffffff8126bc4f>] sysrq_handle_showallcpus+0xe/0x10
> [<ffffffff8126c186>] __handle_sysrq+0x94/0x126
> [<ffffffff8126c329>] sysrq_filter+0xee/0x287
> [<ffffffff812c0fd8>] input_to_handler+0x5e/0xcb
> [<ffffffff812c1de2>] input_pass_values.part.3+0x76/0x134
> [<ffffffff812c3eae>] input_handle_event+0x457/0x46d
> [<ffffffff812c3f19>] input_event+0x55/0x6f
> [<ffffffff812c6fb5>] input_sync+0xf/0x11
> [<ffffffff812c7f47>] atkbd_interrupt+0x4d5/0x595
> [<ffffffff812bf2c3>] serio_interrupt+0x43/0x7d
> [<ffffffff812bfa2e>] i8042_interrupt+0x292/0x2a8
> [<ffffffff8108b64b>] ? tick_sched_do_timer+0x33/0x33
> [<ffffffff810729a6>] handle_irq_event_percpu+0x44/0x19f
> [<ffffffff81072b3d>] handle_irq_event+0x3c/0x5c
> [<ffffffff81025e49>] ? apic_eoi+0x18/0x1a
> [<ffffffff810752b2>] handle_edge_irq+0x95/0xae
> [<ffffffff81004679>] handle_irq+0x158/0x16d
> [<ffffffff8105683f>] ? get_parent_ip+0xe/0x3e
> [<ffffffff81003f71>] do_IRQ+0x58/0xda
> [<ffffffff813ba1ea>] common_interrupt+0x6a/0x6a
> <EOI>
>
> [<ffffffff813b6b95>] ? preempt_schedule_irq+0x3c/0x59
> [<ffffffff810d75b5>] ? __zone_watermark_ok+0x63/0x85
> [<ffffffff810d839e>] zone_watermark_ok+0x1a/0x1c
> [<ffffffff810ef3d7>] compact_zone+0x215/0x4b2
> [<ffffffff810ef6c0>] compact_zone_order+0x4c/0x5f
> [<ffffffff810ef87f>] try_to_compact_pages+0xc4/0x1d6
> [<ffffffff813b3118>] __alloc_pages_direct_compact+0x61/0x1bf
> [<ffffffff810da3e1>] __alloc_pages_nodemask+0x409/0x799
> [<ffffffff810fdd84>] ? anon_vma_prepare+0xf5/0x12c
> [<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
> [<ffffffff810faa65>] ? mmap_region+0x171/0x458
> [<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
> [<ffffffff8102dced>] __do_page_fault+0x27a/0x358
> [<ffffffff810fb004>] ? do_mmap_pgoff+0x2b8/0x306
> [<ffffffff810e88dd>] ? vm_mmap_pgoff+0x82/0xaa
> [<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
> [<ffffffff8102ddf8>] do_page_fault+0xc/0xe
> [<ffffffff813bb162>] page_fault+0x22/0x30
> Code: eb 02 66 90 eb 0e 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 ff c8 75 fb 48 ff c8 5d c3 55 48 89 e5 ff 15 a4 0c 48 00 5d c3 55 <48> 8d
> 04 bd 00 00 00 00 48 89 e5 65 48 8b 14 25 20 26 01 00 48
> NMI backtrace for cpu 0
> CPU: 0 PID: 11733 Comm: kwin Not tainted 3.18.0-rc3+ #46
> Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
> task: ffff8800055e7620 ti: ffff88009dc78000 task.ti: ffff88009dc78000
> RIP: 0010:[<ffffffff810ee567>] [<ffffffff810ee567>] acct_isolated+0x64/0x6b
> RSP: 0000:ffff88009dc7ba08 EFLAGS: 00000246
> RAX: ffff88009dc7bac8 RBX: ffffffff8168be40 RCX: ffff88009dc7bac8
> RDX: 0000000000000380 RSI: ffff88009dc7bab8 RDI: ffffffff8168be40
> RBP: ffff88009dc7ba28 R08: 0000000000000000 R09: ffffffffffffff01
> R10: 0000000000000038 R11: ffffffff8168be40 R12: 00000000000bf800
> R13: 00000000000bf600 R14: ffff88009dc7bab8 R15: 0000160000000000
> FS: 00007facfaf397c0(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00007f9d5781d910 CR3: 0000000025c25000 CR4: 00000000000007f0
> Stack:
> 0000000000000000 0000000000000000 ffff88009dc7ba28 ffffffff8168be40
> ffff88009dc7ba98 ffffffff810ef46a ffff88008035e660 ffffea0002fd0000
> 0000000000000020 ffff8800055e7620 0000000000000004 ffff88009dc7bac8
> Call Trace:
> [<ffffffff810ef46a>] compact_zone+0x2a8/0x4b2
> [<ffffffff810ef6c0>] compact_zone_order+0x4c/0x5f
> [<ffffffff810ef87f>] try_to_compact_pages+0xc4/0x1d6
> [<ffffffff813b3118>] __alloc_pages_direct_compact+0x61/0x1bf
> [<ffffffff810da3e1>] __alloc_pages_nodemask+0x409/0x799
> [<ffffffff810fdcba>] ? anon_vma_prepare+0x2b/0x12c
> [<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
> [<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
> [<ffffffff8102dced>] __do_page_fault+0x27a/0x358
> [<ffffffff810fb004>] ? do_mmap_pgoff+0x2b8/0x306
> [<ffffffff810e88dd>] ? vm_mmap_pgoff+0x82/0xaa
> [<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
> [<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
> [<ffffffff8102ddf8>] do_page_fault+0xc/0xe
> [<ffffffff813bb162>] page_fault+0x22/0x30
> Code: f7 d2 83 e2 01 ff 44 95 e8 eb dd 8b 55 e8 be 16 00 00 00 48 89 df e8 7d b3 ff ff 8b 55 ec be 17 00 00 00 48 89 df e8 6d b3 ff ff <48> 83
> c4 18 5b 5d c3 83 7a 40 00 55 48 89 e5 41 54 49 89 d4 53
> INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took too long to run: 91.545 msecs
>
> SysRq : Show backtrace of all active CPUs
> sending NMI to all CPUs:
>
> NMI backtrace for cpu 0
> CPU: 0 PID: 11733 Comm: kwin Not tainted 3.18.0-rc3+ #46
> Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
> task: ffff8800055e7620 ti: ffff88009dc78000 task.ti: ffff88009dc78000
> RIP: 0010:[<ffffffff810ef586>] [<ffffffff810ef586>] compact_zone+0x3c4/0x4b2
> RSP: 0000:ffff88009dc7ba38 EFLAGS: 00000202
> RAX: 00000000ffffffff RBX: ffffffff8168be40 RCX: 0000000000000008
> RDX: 0000000000000380 RSI: 0000000000000009 RDI: ffffffff8168be40
> RBP: ffff88009dc7ba98 R08: 0000000000000000 R09: ffffffffffffff01
> R10: 0000000000000038 R11: ffffffff8168be40 R12: 00000000000bf800
> R13: 00000000000bf600 R14: ffff88009dc7bab8 R15: 0000160000000000
> FS: 00007facfaf397c0(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00007fe8952e5000 CR3: 0000000025c25000 CR4: 00000000000007f0
> Stack:
> ffff88008035e660 ffffea0002fd0000 0000000000000020 ffff8800055e7620
> 0000000000000004 ffff88009dc7bac8 0000000000000234 0000000000000000
> 0000000000000009 ffff88009dc7bcec 0000000000000002 0000000000000000
> Call Trace:
> [<ffffffff810ef6c0>] compact_zone_order+0x4c/0x5f
> [<ffffffff810ef87f>] try_to_compact_pages+0xc4/0x1d6
> [<ffffffff813b3118>] __alloc_pages_direct_compact+0x61/0x1bf
> [<ffffffff810da3e1>] __alloc_pages_nodemask+0x409/0x799
> [<ffffffff810fdcba>] ? anon_vma_prepare+0x2b/0x12c
> [<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
> [<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
> [<ffffffff8102dced>] __do_page_fault+0x27a/0x358
> [<ffffffff810fb004>] ? do_mmap_pgoff+0x2b8/0x306
> [<ffffffff810e88dd>] ? vm_mmap_pgoff+0x82/0xaa
> [<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
> [<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
> [<ffffffff8102ddf8>] do_page_fault+0xc/0xe
> [<ffffffff813bb162>] page_fault+0x22/0x30
> Code: 8b 7b 08 44 89 e6 ff 13 48 83 c3 10 48 83 3b 00 eb eb 41 83 7e 40 01 4d 8b 6e 38 19 c0 89 45 c0 4d 8d a5 00 02 00 00 83 65 c0 04 <49>
> 81 e4 00 fe ff ff e9 b2 fe ff ff 41 80 7e 44 00 74 09 41 83
> NMI backtrace for cpu 1
> CPU: 1 PID: 13544 Comm: python Not tainted 3.18.0-rc3+ #46
> Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
> task: ffff88000c78ee40 ti: ffff88000e5f8000 task.ti: ffff88000e5f8000
> RIP: 0010:[<ffffffff811df82b>] [<ffffffff811df82b>] __const_udelay+0x15/0x29
> RSP: 0000:ffff8800bf303b68 EFLAGS: 00000006
> RAX: 0000000001062560 RBX: 0000000000002710 RCX: 0000000000000007
> RDX: 0000000000185ab3 RSI: 0000000000000c00 RDI: 0000000000418958
> RBP: ffff8800bf303b68 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
> R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
> FS: 00007f1570ed1700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00007f38f594a000 CR3: 00000000740c9000 CR4: 00000000000007e0
> Stack:
> ffff8800bf303b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
> ffff8800bf303b98 ffffffff8126bc4f ffff8800bf303bc8 ffffffff8126c186
> ffff88003781c200 0000000000000001 0000000000000026 ffff88003781c201
> Call Trace:
> <IRQ>
>
> [<ffffffff81025de1>] arch_trigger_all_cpu_backtrace+0xa8/0xd2
> [<ffffffff8126bc4f>] sysrq_handle_showallcpus+0xe/0x10
> [<ffffffff8126c186>] __handle_sysrq+0x94/0x126
> [<ffffffff8126c329>] sysrq_filter+0xee/0x287
> [<ffffffff812c0fd8>] input_to_handler+0x5e/0xcb
> [<ffffffff812c1de2>] input_pass_values.part.3+0x76/0x134
> [<ffffffff812c3eae>] input_handle_event+0x457/0x46d
> [<ffffffff812c3f19>] input_event+0x55/0x6f
> [<ffffffff812c6fb5>] input_sync+0xf/0x11
> [<ffffffff812c7f47>] atkbd_interrupt+0x4d5/0x595
> [<ffffffff812bf2c3>] serio_interrupt+0x43/0x7d
> [<ffffffff812bfa2e>] i8042_interrupt+0x292/0x2a8
> [<ffffffff8108b64b>] ? tick_sched_do_timer+0x33/0x33
> [<ffffffff810729a6>] handle_irq_event_percpu+0x44/0x19f
> [<ffffffff81072b3d>] handle_irq_event+0x3c/0x5c
> [<ffffffff81025e49>] ? apic_eoi+0x18/0x1a
> [<ffffffff810752b2>] handle_edge_irq+0x95/0xae
> [<ffffffff81004679>] handle_irq+0x158/0x16d
> [<ffffffff8105683f>] ? get_parent_ip+0xe/0x3e
> [<ffffffff81003f71>] do_IRQ+0x58/0xda
> [<ffffffff813ba1ea>] common_interrupt+0x6a/0x6a
> <EOI>
>
> [<ffffffff810d75ad>] ? __zone_watermark_ok+0x5b/0x85
> [<ffffffff810d839e>] zone_watermark_ok+0x1a/0x1c
> [<ffffffff810ef3d7>] compact_zone+0x215/0x4b2
> [<ffffffff810ef6c0>] compact_zone_order+0x4c/0x5f
> [<ffffffff810ef87f>] try_to_compact_pages+0xc4/0x1d6
> [<ffffffff813b3118>] __alloc_pages_direct_compact+0x61/0x1bf
> [<ffffffff810da3e1>] __alloc_pages_nodemask+0x409/0x799
> [<ffffffff810fdd84>] ? anon_vma_prepare+0xf5/0x12c
> [<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
> [<ffffffff810faa65>] ? mmap_region+0x171/0x458
> [<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
> [<ffffffff8102dced>] __do_page_fault+0x27a/0x358
> [<ffffffff810fb004>] ? do_mmap_pgoff+0x2b8/0x306
> [<ffffffff810e88dd>] ? vm_mmap_pgoff+0x82/0xaa
> [<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
> [<ffffffff8102ddf8>] do_page_fault+0xc/0xe
> [<ffffffff813bb162>] page_fault+0x22/0x30
> Code: 48 ff c8 75 fb 48 ff c8 5d c3 55 48 89 e5 ff 15 a4 0c 48 00 5d c3 55 48 8d 04 bd 00 00 00 00 48 89 e5 65 48 8b 14 25 20 26 01 00 <48> 69
> d2 fa 00 00 00 f7 e2 48 8d 7a 01 e8 cd ff ff ff 5d c3 48
> INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took too long to run: 163.331 msecs
>
> SysRq : Manual OOM execution
> Purging GPU memory, 4186 bytes freed, 4243456 bytes still pinned.
>
> SysRq : HELP : loglevel(0-9) reboot(b) crash(c) terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k)
> show-backtrace-all-active-cpus(l) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p) show-all-timers(q)
> unraw(r) sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
> SysRq : Manual OOM execution
>
> Purging GPU memory, 0 bytes freed, 4243456 bytes still pinned.
>
> kworker/1:0 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0
> kworker/1:0 cpuset=/ mems_allowed=0
> CPU: 1 PID: 13984 Comm: kworker/1:0 Not tainted 3.18.0-rc3+ #46
> Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
> Workqueue: events moom_callback
> ffff8800067a1600 ffff88000dadfc58 ffffffff813b4868 0000000000000001
> ffff8800067a0fc0 ffff88000dadfce8 ffffffff813b2e37 000000000023222e
> ffffffff8163e380 000000000023222e 0000000000000206 ffff88000dadfca8
> Call Trace:
> [<ffffffff813b4868>] dump_stack+0x4f/0x7c
> [<ffffffff813b2e37>] dump_header.isra.11+0x71/0x1d7
> [<ffffffff813b8ffe>] ? _raw_spin_unlock_irqrestore+0x1b/0x31
> [<ffffffff811db724>] ? ___ratelimit+0xb9/0xc7
> [<ffffffff810d6ca8>] oom_kill_process+0x60/0x310
> [<ffffffff810d6b5a>] ? oom_badness+0xb1/0xfb
> [<ffffffff810d733d>] out_of_memory+0x282/0x29b
> [<ffffffff8126bd74>] moom_callback+0x1f/0x21
> [<ffffffff8104b077>] process_one_work+0x156/0x29c
> [<ffffffff8104b978>] worker_thread+0x1eb/0x2c2
> [<ffffffff8104b78d>] ? cancel_delayed_work_sync+0x10/0x10
> [<ffffffff8104f502>] kthread+0xbb/0xc3
> [<ffffffff8104f447>] ? __kthread_parkme+0x5c/0x5c
> [<ffffffff813b96ac>] ret_from_fork+0x7c/0xb0
> [<ffffffff8104f447>] ? __kthread_parkme+0x5c/0x5c
> Mem-Info:
> DMA per-cpu:
> CPU 0: hi: 0, btch: 1 usd: 0
> CPU 1: hi: 0, btch: 1 usd: 0
> DMA32 per-cpu:
> CPU 0: hi: 186, btch: 31 usd: 97
> CPU 1: hi: 186, btch: 31 usd: 183
> active_anon:286387 inactive_anon:87475 isolated_anon:0
> active_file:174069 inactive_file:43465 isolated_file:0
> unevictable:0 dirty:30 writeback:0 unstable:0
> free:80502 slab_reclaimable:58629 slab_unreclaimable:10926
> mapped:98606 shmem:48888 pagetables:17014 bounce:0
> free_cma:0
> DMA free:12216kB min:232kB low:288kB high:348kB active_anon:540kB inactive_anon:804kB active_file:1056kB inactive_file:760kB
> unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15992kB managed:15908kB mlocked:0kB dirty:0kB writeback:0kB
> mapped:892kB shmem:372kB slab_reclaimable:148kB slab_unreclaimable:88kB kernel_stack:16kB pagetables:92kB unstable:0kB
> bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 2984 2984 2984
> DMA32 free:309792kB min:44820kB low:56024kB high:67228kB active_anon:1145008kB inactive_anon:349096kB active_file:695220kB
> inactive_file:173100kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3119936kB managed:3057340kB mlocked:0kB
> dirty:120kB writeback:0kB mapped:393532kB shmem:195180kB slab_reclaimable:234368kB slab_unreclaimable:43616kB
> kernel_stack:7360kB pagetables:67964kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0
> all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> DMA: 10*4kB (UEM) 6*8kB (UM) 2*16kB (EM) 8*32kB (UEM) 3*64kB (UEM) 1*128kB (E) 1*256kB (M) 2*512kB (EM) 2*1024kB (UE)
> 2*2048kB (ER) 1*4096kB (M) = 12216kB
> DMA32: 3084*4kB (UEMR) 8564*8kB (UEMR) 6169*16kB (UEMR) 2174*32kB (UEMR) 402*64kB (UEM) 139*128kB (UEMR) 49*256kB
> (UEMR) 7*512kB (UEM) 1*1024kB (M) 0*2048kB 0*4096kB = 309792kB
> Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
> 266800 total pagecache pages
> 376 pages in swap cache
> Swap cache stats: add 12077, delete 11701, find 857/1253
> Free swap = 6092348kB
> Total swap = 6136792kB
> 783982 pages RAM
> 0 pages HighMem/MovableOnly
> 15649 pages reserved
> 0 pages hwpoisoned
> [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name
> [ 492] 0 492 10595 2553 23 19 0 systemd-journal
> [ 544] 0 544 8460 747 20 22 -1000 systemd-udevd
> [ 738] 0 738 4743 696 14 19 0 alsactl
> [ 761] 0 761 5848 855 16 28 0 bluetoothd
> [ 762] 0 762 8185 723 21 69 0 abrtd
> [ 766] 0 766 4827 581 15 30 0 irqbalance
> [ 788] 0 788 3814 709 12 97 0 smartd
> [ 789] 0 789 1827 365 9 811 0 hddtemp
> [ 795] 0 795 5423 624 16 11 0 systemd-logind
> [ 796] 0 796 48410 1889 31 74 0 udisks-daemon
> [ 797] 499 797 3638 754 12 10 -900 dbus-daemon
> [ 799] 0 799 1071 382 8 13 0 acpid
> [ 811] 0 811 26132 4425 53 472 0 cupsd
> [ 813] 0 813 56404 1572 41 647 0 upowerd
> [ 815] 0 815 6159 545 17 15 0 kdm
> [ 831] 0 831 173245 498 34 30 0 nscd
> [ 904] 0 904 11431 4 26 78 0 udisks-daemon
> [ 1005] 497 1005 91379 3112 41 1379 0 polkitd
> [ 1113] 0 1113 1586 287 8 22 0 ifplugd
> [ 1212] 0 1212 8029 408 18 126 0 wpa_supplicant
> [ 1214] 0 1214 1586 288 9 22 0 ifplugd
> [ 1324] 0 1324 28065 1115 26 387 0 cf-execd
> [ 1333] 0 1333 12113 541 24 1150 0 cf-serverd
> [ 1479] 0 1479 3117 98 10 1610 0 dhclient
> [ 1579] 0 1579 87422 2054 107 925 0 libvirtd
> [ 1584] 0 1584 10579 942 25 135 -1000 sshd
> [ 1592] 0 1592 2846 401 11 42 0 xinetd
> [ 1598] 491 1598 6250 412 14 70 0 rpcbind
> [ 1602] 0 1602 3851 0 12 38 0 rpc.idmapd
> [ 1611] 488 1611 8360 544 21 141 0 rpc.statd
> [ 1614] 80 1614 7989 1084 20 167 0 pgpool
> [ 1615] 80 1615 8029 475 19 181 0 pgpool
> [ 1616] 80 1616 8029 475 19 181 0 pgpool
> [ 1617] 80 1617 8029 475 20 181 0 pgpool
> [ 1618] 80 1618 8029 475 19 181 0 pgpool
> [ 1619] 80 1619 7989 327 18 172 0 pgpool
> [ 1620] 80 1620 7989 11 18 163 0 pgpool
> [ 1622] 80 1622 47318 4356 34 123 -1000 postgres
> [ 1636] 0 1636 2941 405 12 120 0 crond
> [ 1643] 487 1643 5374 578 15 33 0 ntpd
> [ 1647] 0 1647 5408 2340 16 23 0 preload
> [ 1680] 80 1680 47350 6430 66 106 -1000 postgres
> [ 1681] 80 1681 47318 9645 90 109 -1000 postgres
> [ 1682] 80 1682 47318 785 25 146 -1000 postgres
> [ 1683] 80 1683 47447 1683 39 148 -1000 postgres
> [ 1684] 80 1684 11074 609 23 131 -1000 postgres
> [ 1685] 80 1685 11146 954 23 118 -1000 postgres
> [ 1803] 493 1803 70606 1317 41 377 0 colord
> [ 1812] 0 1812 9046 792 24 234 0 systemd
> [ 1815] 0 1815 14697 157 31 453 0 (sd-pam)
> [ 2445] 0 2445 4228 12 12 38 0 gpg-agent
> [ 5893] 0 5893 12071 1997 29 236 0 cf-monitord
> [ 8691] 500 8691 9233 1169 22 19 0 systemd
> [ 8692] 500 8692 14769 177 31 487 0 (sd-pam)
> [ 8759] 500 8759 3170 7 9 63 0 ssh-agent
> [ 8784] 500 8784 3459 393 14 34 0 gpg-agent
> [ 9260] 0 9260 1975 400 9 0 0 agetty
> [ 9262] 0 9262 1975 393 9 0 0 agetty
> [ 9367] 500 9367 3098 684 11 0 0 gam_server
> [ 9976] 0 9976 88063 2116 38 0 0 udisksd
> [11283] 0 11283 47144 13442 89 0 0 X
> [11297] 0 11297 19771 1253 44 6 0 kdm
> [11507] 500 11507 3191 735 12 0 0 startkde
> [11602] 500 11602 3987 460 13 0 0 dbus-launch
> [11603] 500 11603 3907 1011 13 0 0 dbus-daemon
> [11634] 500 11634 34515 1861 67 0 0 s2u
> [11690] 500 11690 1028 20 6 0 0 start_kdeinit
> [11691] 500 11691 95918 8995 150 0 0 kdeinit4
> [11692] 500 11692 97137 6446 140 0 0 klauncher
> [11694] 500 11694 260253 17122 254 0 0 kded4
> [11697] 500 11697 118836 9730 181 0 0 kglobalaccel
> [11700] 500 11700 5856 676 17 0 0 obexd
> [11707] 500 11707 72764 6751 125 0 0 bluedevil-monol
> [11718] 500 11718 228901 9415 160 0 0 kactivitymanage
> [11721] 500 11721 1062 162 8 0 0 kwrapper4
> [11724] 500 11724 139507 9588 188 0 0 ksmserver
> [11733] 500 11733 683159 22362 242 0 0 kwin
> [11737] 500 11737 821255 39358 343 0 0 plasma-desktop
> [11740] 500 11740 2491 606 10 0 0 ksysguardd
> [11742] 500 11742 185670 14918 241 0 0 krunner
> [11836] 500 11836 66336 1673 33 0 0 mission-control
> [11900] 500 11900 71627 7762 130 0 0 kuiserver
> [11902] 500 11902 39315 2928 38 0 0 akonadi_control
> [11904] 500 11904 3190 688 12 0 0 akonadiserver
> [11905] 500 11905 364072 7154 110 0 0 akonadiserver
> [11907] 80 11907 48978 37329 98 90 -1000 postgres
> [11916] 500 11916 71126 7723 127 0 0 ksyndaemon
> [11924] 500 11924 94819 2524 88 0 0 pulseaudio
> [11925] 492 11925 40153 566 15 0 0 rtkit-daemon
> [11938] 80 11938 47549 2575 34 95 -1000 postgres
> [11939] 80 11939 47549 2619 34 95 -1000 postgres
> [11940] 80 11940 47549 2619 34 95 -1000 postgres
> [11943] 500 11943 80114 9317 112 0 0 akonadi_agent_l
> [11944] 500 11944 80111 9358 108 0 0 akonadi_agent_l
> [11945] 500 11945 149309 16150 260 0 0 akonadi_archive
> [11948] 500 11948 80738 10447 147 0 0 akonadi_birthda
> [11949] 500 11949 80046 9859 108 0 0 akonadi_agent_l
> [11950] 500 11950 149456 15918 259 0 0 akonadi_foldera
> [11952] 500 11952 119534 12515 160 0 0 akonadi_imap_re
> [11953] 500 11953 138083 12936 163 0 0 akonadi_imap_re
> [11954] 500 11954 137951 12152 158 0 0 akonadi_imap_re
> [11955] 500 11955 74613 8962 134 0 0 akonadi_localbo
> [11956] 500 11956 20123 790 42 0 0 gconf-helper
> [11958] 500 11958 11393 1256 27 0 0 gconfd-2
> [11959] 500 11959 80110 9345 111 0 0 akonadi_agent_l
> [11960] 500 11960 80110 9316 112 0 0 akonadi_agent_l
> [11961] 500 11961 88890 10322 156 0 0 akonadi_maildis
> [11962] 500 11962 150003 16953 260 0 0 akonadi_mailfil
> [11963] 500 11963 75882 9862 142 0 0 akonadi_migrati
> [11964] 500 11964 80530 10776 142 0 0 akonadi_mixedma
> [11965] 500 11965 82835 12607 151 0 0 akonadi_mixedma
> [11966] 500 11966 144439 13711 197 0 0 konsole
> [11973] 500 11973 76667 10080 139 0 0 akonadi_nepomuk
> [11974] 500 11974 100405 11536 184 0 0 akonadi_newmail
> [11975] 500 11975 79291 9474 108 0 0 akonadi_agent_l
> [11976] 500 11976 76551 9175 140 0 0 akonadi_pop3_re
> [11977] 500 11977 76535 9251 139 0 0 akonadi_pop3_re
> [11978] 500 11978 77748 10430 141 0 0 akonadi_pop3_re
> [11979] 500 11979 138554 13963 242 0 0 akonadi_sendlat
> [11981] 500 11981 78493 9240 109 0 0 akonadi_agent_l
> [11982] 500 11982 80012 9799 113 0 0 akonadi_agent_l
> [11983] 500 11983 177548 11542 195 0 0 kmix
> [11984] 500 11984 180599 14445 204 0 0 dolphin
> [11993] 500 11993 74732 8349 133 0 0 akonaditray
> [11997] 500 11997 107450 11140 188 0 0 knotes
> [11999] 500 11999 3649 1186 12 0 0 bash
> [12011] 500 12011 3585 1095 12 0 0 bash
> [12025] 500 12025 3585 1076 12 0 0 bash
> [12047] 500 12047 3585 1116 11 0 0 bash
> [12186] 500 12186 116692 12696 175 0 0 kgpg
> [12293] 500 12293 3585 1117 12 0 0 bash
> [12317] 500 12317 3585 1113 13 0 0 bash
> [12356] 500 12356 3585 1102 12 0 0 bash
> [12405] 500 12405 3585 1086 13 0 0 bash
> [12506] 500 12506 3585 1073 11 0 0 bash
> [12645] 500 12645 122416 29665 208 0 0 choqok
> [12673] 500 12673 3585 1115 13 0 0 bash
> [12718] 500 12718 3585 1104 13 0 0 bash
> [12771] 500 12771 3585 1075 12 0 0 bash
> [12843] 500 12843 3585 1087 12 0 0 bash
> [13020] 500 13020 686067 27224 266 0 0 kate
> [13027] 500 13027 121357 10647 186 0 0 kwalletd
> [13029] 80 13029 47607 3959 41 92 -1000 postgres
> [13033] 80 13033 47549 2573 34 95 -1000 postgres
> [13052] 500 13052 138593 9489 158 0 0 knotify4
> [13053] 80 13053 47602 3917 40 92 -1000 postgres
> [13054] 80 13054 47602 3920 40 93 -1000 postgres
> [13055] 80 13055 47835 7071 72 92 -1000 postgres
> [13058] 80 13058 47831 4688 51 92 -1000 postgres
> [13059] 80 13059 47602 3919 40 92 -1000 postgres
> [13061] 500 13061 121241 17287 186 0 0 konversation
> [13062] 80 13062 47583 3456 39 95 -1000 postgres
> [13076] 80 13076 47745 6832 72 92 -1000 postgres
> [13080] 80 13080 47629 4038 42 93 -1000 postgres
> [13081] 500 13081 701137 24187 260 0 0 kate
> [13082] 80 13082 47866 8228 73 92 -1000 postgres
> [13083] 80 13083 47623 3981 40 92 -1000 postgres
> [13085] 80 13085 47830 8033 67 92 -1000 postgres
> [13087] 80 13087 47549 2587 34 95 -1000 postgres
> [13088] 80 13088 47828 5052 52 92 -1000 postgres
> [13089] 80 13089 47549 2601 34 95 -1000 postgres
> [13090] 80 13090 47684 9326 79 92 -1000 postgres
> [13091] 80 13091 47581 3365 39 95 -1000 postgres
> [13092] 80 13092 47651 4875 59 92 -1000 postgres
> [13093] 80 13093 47769 5336 62 92 -1000 postgres
> [13094] 80 13094 47670 4777 55 93 -1000 postgres
> [13095] 80 13095 47582 3205 39 95 -1000 postgres
> [13096] 80 13096 47596 3887 44 93 -1000 postgres
> [13097] 80 13097 47835 4919 50 92 -1000 postgres
> [13098] 80 13098 47900 22860 93 89 -1000 postgres
> [13100] 80 13100 47581 3364 39 95 -1000 postgres
> [13102] 80 13102 47549 2586 34 95 -1000 postgres
> [13103] 80 13103 47549 2586 34 95 -1000 postgres
> [13105] 500 13105 578961 40138 324 0 0 rekonq
> [13106] 80 13106 47595 3889 44 93 -1000 postgres
> [13107] 80 13107 47549 2586 34 95 -1000 postgres
> [13108] 80 13108 47549 2586 34 95 -1000 postgres
> [13109] 80 13109 49319 34543 99 92 -1000 postgres
> [13111] 80 13111 47549 2571 34 95 -1000 postgres
> [13112] 80 13112 49304 35409 99 92 -1000 postgres
> [13114] 80 13114 49304 36076 99 92 -1000 postgres
> [13115] 80 13115 47862 5758 65 92 -1000 postgres
> [13116] 500 13116 113252 14152 201 0 0 kaddressbook
> [13122] 500 13122 493943 33314 323 0 0 kmail
> [13126] 500 13126 123010 12244 188 0 0 konqueror
> [13140] 500 13140 64238 5816 96 0 0 applet.py
> [13141] 500 13141 115594 19636 162 0 0 net_applet
> [13143] 500 13143 95177 8297 141 0 0 polkit-kde-auth
> [13148] 500 13148 66455 1821 32 0 0 xsettings-kde
> [13149] 500 13149 10882 1157 27 0 0 xload
> [13155] 80 13155 47803 4595 53 93 -1000 postgres
> [13156] 80 13156 47973 11993 86 92 -1000 postgres
> [13171] 500 13171 73289 9621 132 0 0 kwalletmanager
> [13178] 500 13178 84306 1842 35 0 0 at-spi-bus-laun
> [13182] 500 13182 3403 569 12 0 0 dbus-daemon
> [13185] 500 13185 31230 1213 31 0 0 at-spi2-registr
> [13189] 500 13189 46019 1304 27 0 0 gvfsd
> [13231] 80 13231 48340 35725 97 92 -1000 postgres
> [13233] 80 13233 47925 24455 91 92 -1000 postgres
> [13309] 80 13309 47549 2555 34 95 -1000 postgres
> [13442] 500 13442 260391 19500 137 0 200 python
> [13447] 80 13447 49761 29978 101 83 -1000 postgres
> [13470] 500 13470 122584 8709 157 0 0 kio_http
> [13482] 80 13482 48989 18272 99 83 -1000 postgres
> [13501] 500 13501 122587 8695 157 0 0 kio_http
> [13505] 500 13505 122584 8710 157 0 0 kio_http
> [13512] 500 13512 122585 8694 157 0 0 kio_http
> [13523] 500 13523 122584 8686 157 0 0 kio_http
> [13526] 500 13526 122584 8702 157 0 0 kio_http
> [13788] 500 13788 115594 13290 145 0 0 net_applet
> [13815] 500 13815 40303 3579 48 0 0 netmon_cron_par
> [13830] 500 13830 23067 3637 47 0 0 content_index.p
> [13843] 500 13843 21772 3377 46 0 0 decode-hardware
> [13863] 500 13863 24181 3735 52 0 0 netmon_decode.p
> [13909] 500 13909 21912 3505 47 0 0 python
> [13914] 500 13914 2330 599 10 0 0 mails-process-n
> [13925] 500 13925 24138 3722 53 0 0 netmon_cflastse
> [13989] 0 13989 1975 438 9 0 0 agetty
> [13994] 500 13994 34668 3038 66 0 0 kcminit
> [13995] 500 13995 43712 4218 78 0 0 kcminit
> [13996] 500 13996 4623 678 13 0 0 setxkbmap
> [13997] 0 13997 4582 268 13 0 0 xkbcomp
> Out of memory: Kill process 13442 (python) score 208 or sacrifice child
> Killed process 13442 (python) total-vm:1041564kB, anon-rss:67284kB, file-rss:10716kB
>
> SysRq : HELP : loglevel(0-9) reboot(b) crash(c) terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k)
> show-backtrace-all-active-cpus(l) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p) show-all-timers(q)
> unraw(r) sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
> SysRq : HELP : loglevel(0-9) reboot(b) crash(c) terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k)
> show-backtrace-all-active-cpus(l) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p) show-all-timers(q)
> unraw(r) sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
> SysRq : HELP : loglevel(0-9) reboot(b) crash(c) terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k)
> show-backtrace-all-active-cpus(l) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p) show-all-timers(q)
> unraw(r) sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
> SysRq : Restore framebuffer console
> SysRq : HELP : loglevel(0-9) reboot(b) crash(c) terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k)
> show-backtrace-all-active-cpus(l) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p) show-all-timers(q)
> unraw(r) sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
> SysRq : Keyboard mode set to system default
>
> -- Reboot --
>

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