* Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
@ 2014-11-04 7:26 P. Christeas
2014-11-04 8:55 ` Vlastimil Babka
0 siblings, 1 reply; 20+ messages in thread
From: P. Christeas @ 2014-11-04 7:26 UTC (permalink / raw)
To: linux-mm; +Cc: Joonsoo Kim, Vlastimil Babka
TL;DR: I'm testing Linus's 3.18-rcX in my desktop (x86_64, full load),
experiencing mm races about every day. Current -rc starves the canary of
stablity
Will keep testing (should I try some -mm tree, please? ) , provide you
feedback about the issue.
Not an active kernel-developer.
Long:
Since 26 Oct. upgraded my everything-on-it laptop to new distro (systemd -
based, all new glibc etc.) and switched from 3.17 to 3.18-pre . First time in
years, kernel got unstable.
This machine is occasionaly under heavy load, doing I/O and serving random
desktop applications. (machine is Intel x86_64, dual core, mechanical SATA
disk).
Now, I have a race about once a day, have narrowed them down (guess) to:
[<ffffffff813b1025>] preempt_schedule_irq+0x3c/0x59
[<ffffffff813b4810>] retint_kernel+0x20/0x30
[<ffffffff810d7481>] ? __zone_watermark_ok+0x77/0x85
[<ffffffff810d8256>] zone_watermark_ok+0x1a/0x1c
[<ffffffff810eee56>] compact_zone+0x215/0x4b2
[<ffffffff810ef13f>] compact_zone_order+0x4c/0x5f
[<ffffffff810ef2fe>] try_to_compact_pages+0xc4/0x1e8
[<ffffffff813ad7f8>] __alloc_pages_direct_compact+0x61/0x1bf
[<ffffffff810da299>] __alloc_pages_nodemask+0x409/0x799
[<ffffffff8110d3fd>] new_slab+0x5f/0x21c
...
Sometimes is a less critical process, that I can safely kill, otherwise I have
to drop everything and reboot.
Unless you are already aware of this case, please accept this feedback.
I'm pulling from Linus, should I also try some of your trees for an early
solution?
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-04 7:26 Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c P. Christeas
@ 2014-11-04 8:55 ` Vlastimil Babka
2014-11-04 9:36 ` P. Christeas
0 siblings, 1 reply; 20+ messages in thread
From: Vlastimil Babka @ 2014-11-04 8:55 UTC (permalink / raw)
To: P. Christeas, linux-mm; +Cc: Joonsoo Kim, lkml
On 11/04/2014 08:26 AM, P. Christeas wrote:
> TL;DR: I'm testing Linus's 3.18-rcX in my desktop (x86_64, full load),
> experiencing mm races about every day. Current -rc starves the canary of
> stablity
>
> Will keep testing (should I try some -mm tree, please? ) , provide you
> feedback about the issue.
Hello,
Please do keep testing (and see below what we need), and don't try
another tree - it's 3.18 we need to fix!
> Not an active kernel-developer.
>
> Long:
>
> Since 26 Oct. upgraded my everything-on-it laptop to new distro (systemd -
> based, all new glibc etc.) and switched from 3.17 to 3.18-pre . First time in
> years, kernel got unstable.
>
> This machine is occasionaly under heavy load, doing I/O and serving random
> desktop applications. (machine is Intel x86_64, dual core, mechanical SATA
> disk).
> Now, I have a race about once a day, have narrowed them down (guess) to:
>
> [<ffffffff813b1025>] preempt_schedule_irq+0x3c/0x59
> [<ffffffff813b4810>] retint_kernel+0x20/0x30
> [<ffffffff810d7481>] ? __zone_watermark_ok+0x77/0x85
> [<ffffffff810d8256>] zone_watermark_ok+0x1a/0x1c
> [<ffffffff810eee56>] compact_zone+0x215/0x4b2
> [<ffffffff810ef13f>] compact_zone_order+0x4c/0x5f
> [<ffffffff810ef2fe>] try_to_compact_pages+0xc4/0x1e8
> [<ffffffff813ad7f8>] __alloc_pages_direct_compact+0x61/0x1bf
> [<ffffffff810da299>] __alloc_pages_nodemask+0x409/0x799
> [<ffffffff8110d3fd>] new_slab+0x5f/0x21c
> ...
I'm not sure what you mean by "race" here and your snippet is
unfortunately just a small portion of the output which could be a BUG,
OOPS, lockdep, soft-lockup, hardlock and possibly many other things. But
the backtrace itself is not enough, please send the whole error output
(it should stard and end with something like:
-----[ cut here ]------
Thanks in advance.
> Sometimes is a less critical process, that I can safely kill, otherwise I have
> to drop everything and reboot.
OK so the process is not dead due to the problem? That probably rules
out some kinds of errors but we still need the full output. Thanks in
advance.
> Unless you are already aware of this case, please accept this feedback.
> I'm pulling from Linus, should I also try some of your trees for an early
> solution?
I'm not aware of this, CCing lkml for wider coverage.
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-04 8:55 ` Vlastimil Babka
@ 2014-11-04 9:36 ` P. Christeas
2014-11-05 15:26 ` Vlastimil Babka
0 siblings, 1 reply; 20+ messages in thread
From: P. Christeas @ 2014-11-04 9:36 UTC (permalink / raw)
To: Vlastimil Babka; +Cc: linux-mm, Joonsoo Kim, lkml
[-- Attachment #1: Type: text/plain, Size: 1736 bytes --]
On Tuesday 04 November 2014, Vlastimil Babka wrote:
> Please do keep testing (and see below what we need), and don't try
> another tree - it's 3.18 we need to fix!
Let me apologize/warn you about the poor quality of this report (and debug
data).
It is on a system meant for everyday desktop usage, not kernel development.
Thus, it is tuned to be "slightly" debuggable ; mostly for performance.
> I'm not sure what you mean by "race" here and your snippet is
> unfortunately just a small portion of the output ...
It is a shot in the dark. System becomes non-responsive (narrowed to desktop
apps waiting each other, or the X+kwin blocking), I can feel the CPU heating
and /sometimes/ disk I/O.
No BUG, Oops or any kernel message. (is printk level 4 adequate? )
Then, I try to drop to a console and collect as much data as possible with
SysRq.
The snippet I'd sent you is from all-cpus-backtrace (l), trying to see which
traces appear consistently during the lockup. There is also the huge traces of
"task-states" (t), but I reckon they are too noisy.
That trace also matches the usage profile, because AFAICG[uess] the issue
appears when allocating during I/O load.
After turning on full-preemption, I have been able to terminate/kill all tasks
and continue with same kernel but new userspace.
> OK so the process is not dead due to the problem? That probably rules
> out some kinds of errors but we still need the full output. Thanks in
> advance.
> I'm not aware of this, CCing lkml for wider coverage.
Thank you. As I've told in the first mail, this is an early report of possible
3.18 regression. I'm trying to narrow down the case and make it reproducible
or get a good trace.
Attached is my current .config
[-- Attachment #2: config-3.18.gz --]
[-- Type: application/gzip, Size: 35515 bytes --]
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-04 9:36 ` P. Christeas
@ 2014-11-05 15:26 ` Vlastimil Babka
2014-11-05 16:02 ` P. Christeas
2014-11-06 19:23 ` P. Christeas
0 siblings, 2 replies; 20+ messages in thread
From: Vlastimil Babka @ 2014-11-05 15:26 UTC (permalink / raw)
To: P. Christeas; +Cc: linux-mm, Joonsoo Kim, lkml
On 11/04/2014 10:36 AM, P. Christeas wrote:
> On Tuesday 04 November 2014, Vlastimil Babka wrote:
>> Please do keep testing (and see below what we need), and don't try
>> another tree - it's 3.18 we need to fix!
> Let me apologize/warn you about the poor quality of this report (and debug
> data).
> It is on a system meant for everyday desktop usage, not kernel development.
> Thus, it is tuned to be "slightly" debuggable ; mostly for performance.
>
>> I'm not sure what you mean by "race" here and your snippet is
>> unfortunately just a small portion of the output ...
>
> It is a shot in the dark. System becomes non-responsive (narrowed to desktop
> apps waiting each other, or the X+kwin blocking), I can feel the CPU heating
> and /sometimes/ disk I/O.
>
> No BUG, Oops or any kernel message. (is printk level 4 adequate? )
>
> Then, I try to drop to a console and collect as much data as possible with
> SysRq.
>
> The snippet I'd sent you is from all-cpus-backtrace (l), trying to see which
> traces appear consistently during the lockup. There is also the huge traces of
> "task-states" (t), but I reckon they are too noisy.
> That trace also matches the usage profile, because AFAICG[uess] the issue
> appears when allocating during I/O load.
>
> After turning on full-preemption, I have been able to terminate/kill all tasks
> and continue with same kernel but new userspace.
>
>> OK so the process is not dead due to the problem? That probably rules
>> out some kinds of errors but we still need the full output. Thanks in
>> advance.
>> I'm not aware of this, CCing lkml for wider coverage.
>
> Thank you. As I've told in the first mail, this is an early report of possible
> 3.18 regression. I'm trying to narrow down the case and make it reproducible
> or get a good trace.
I see. I've tried to reproduce such issues with 3.18-rc3 but wasn't successful.
But I noticed a possible issue that could lead to your problem.
Can you please try the following patch?
--------8<-------
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-05 15:26 ` Vlastimil Babka
@ 2014-11-05 16:02 ` P. Christeas
2014-11-06 19:23 ` P. Christeas
1 sibling, 0 replies; 20+ messages in thread
From: P. Christeas @ 2014-11-05 16:02 UTC (permalink / raw)
To: Vlastimil Babka; +Cc: linux-mm, Joonsoo Kim, lkml
On Wednesday 05 November 2014, Vlastimil Babka wrote:
> I see. I've tried to reproduce such issues with 3.18-rc3 but wasn't
> successful. But I noticed a possible issue that could lead to your problem.
> Can you please try the following patch?
OK, I can give it a try.
FYI, the "stability canary" is still alive, my system is on for 28hours, under
avg. load >=3 all this time, HEAD=980d0d51b1c9617a4
/me goes busy fire-proofing your patch...
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-05 15:26 ` Vlastimil Babka
2014-11-05 16:02 ` P. Christeas
@ 2014-11-06 19:23 ` P. Christeas
2014-11-06 21:38 ` Vlastimil Babka
1 sibling, 1 reply; 20+ messages in thread
From: P. Christeas @ 2014-11-06 19:23 UTC (permalink / raw)
To: Vlastimil Babka; +Cc: linux-mm, Joonsoo Kim, lkml
[-- Attachment #1: Type: text/plain, Size: 723 bytes --]
On Wednesday 05 November 2014, Vlastimil Babka wrote:
> 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.
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 ...
[-- Attachment #2: kcrash.log --]
[-- Type: text/x-log, Size: 39919 bytes --]
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 --
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-06 19:23 ` P. Christeas
@ 2014-11-06 21:38 ` Vlastimil Babka
2014-11-08 13:11 ` P. Christeas
0 siblings, 1 reply; 20+ messages in thread
From: Vlastimil Babka @ 2014-11-06 21:38 UTC (permalink / raw)
To: P. Christeas; +Cc: linux-mm, Joonsoo Kim, lkml
On 11/06/2014 08:23 PM, P. Christeas wrote:
> On Wednesday 05 November 2014, Vlastimil Babka wrote:
>> 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 :(
Sigh.
> I just got again into a state that some task was spinning out of control, and
> blocking the rest of the desktop.
Well this is similar to reports [1] and [2] except [1] points to
isolate_freepages_block() and your traces only go as deep as compact_zone. Which
probably inlines isolate_migratepages* but I would expect it cannot inline
isolate_freepages* due to invocation via pointer.
> 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.
Well I doubt that but I'd like to be surprised :)
> In the meanwhile, I'm pulling linus/master ...
Could you perhaps bisect the most suspicious part? It's not a lot of commits
and you seem to be reproducing this quite easily?
commit 447f05bb488bff4282088259b04f47f0f9f76760 should be good
commit 6d7ce55940b6ecd463ca044ad241f0122d913293 should be bad
If that's true, then bisection should find the cause rather quickly.
Oh and did I ask in this thread for /proc/zoneinfo yet? :)
Thanks.
> kcrash.log
>
[1]
http://article.gmane.org/gmane.linux.kernel.mm/124451/match=isolate_freepages_block+very+high+intermittent+overhead
[2] https://lkml.org/lkml/2014/11/4/904
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-06 21:38 ` Vlastimil Babka
@ 2014-11-08 13:11 ` P. Christeas
2014-11-08 22:18 ` Vlastimil Babka
0 siblings, 1 reply; 20+ messages in thread
From: P. Christeas @ 2014-11-08 13:11 UTC (permalink / raw)
To: Vlastimil Babka; +Cc: linux-mm, Joonsoo Kim, lkml
[-- Attachment #1: Type: text/plain, Size: 1495 bytes --]
On Thursday 06 November 2014, Vlastimil Babka wrote:
> > On Wednesday 05 November 2014, Vlastimil Babka wrote:
> >> Can you please try the following patch?
> >> - compaction_defer_reset(zone, order, false);
> Oh and did I ask in this thread for /proc/zoneinfo yet? :)
Using that same kernel[1], got again into a race, gathered a few more data.
This time, I had 1x "urpmq" process [2] hung at 100% CPU , when "kwin" got
apparently blocked (100% CPU, too) trying to resize a GUI window. I suppose
the resizing operation would mean heavy memory alloc/free.
The rest of the system was responsive, I could easily get a console, login,
gather the files.. Then, I have *killed* -9 the "urpmq" process, which solved
the race and my system is still alive! "kwin" is still running, returned to
regular CPU load.
Attached is traces from SysRq+l (pressed a few times, wanted to "snapshot" the
stack) and /proc/zoneinfo + /proc/vmstat
Bisection is not yet meaningful, IMHO, because I cannot be sure that "good"
points are really free from this issue. I'd estimate that each test would take
+3days, unless I really find a deterministic way to reproduce the issue .
Thank you, again.
[1] linus's didn't have any -mm changes, so I haven't compiled anything yet.
This means it also contains the "- compaction_defer_reset()" change
[2] urpmq is a Mandrake distro Perl script for querying the RPM database. It
does some disk I/O , loads data into allocated Perl structs and sorts that,
FYI.
[-- Attachment #2: zoneinfo.log --]
[-- Type: text/x-log, Size: 5002 bytes --]
Node 0, zone DMA
pages free 3055
min 58
low 72
high 87
scanned 0
spanned 4095
present 3998
managed 3977
nr_free_pages 3055
nr_alloc_batch 15
nr_inactive_anon 295
nr_active_anon 132
nr_inactive_file 134
nr_active_file 198
nr_unevictable 0
nr_mlock 0
nr_anon_pages 388
nr_mapped 84
nr_file_pages 386
nr_dirty 0
nr_writeback 0
nr_slab_reclaimable 59
nr_slab_unreclaimable 32
nr_page_table_pages 57
nr_kernel_stack 2
nr_unstable 0
nr_bounce 0
nr_vmscan_write 1301
nr_vmscan_immediate_reclaim 272
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 19
nr_dirtied 21715
nr_written 20583
nr_pages_scanned 0
workingset_refault 7169
workingset_activate 1604
workingset_nodereclaim 0
nr_anon_transparent_hugepages 0
nr_free_cma 0
protection: (0, 2984, 2984, 2984)
pagesets
cpu: 0
count: 0
high: 0
batch: 1
vm stats threshold: 4
cpu: 1
count: 0
high: 0
batch: 1
vm stats threshold: 4
all_unreclaimable: 0
start_pfn: 1
inactive_ratio: 1
Node 0, zone DMA32
pages free 51824
min 11205
low 14006
high 16807
scanned 0
spanned 779984
present 779984
managed 764335
nr_free_pages 51824
nr_alloc_batch 42
nr_inactive_anon 108284
nr_active_anon 388047
nr_inactive_file 28047
nr_active_file 95328
nr_unevictable 0
nr_mlock 0
nr_anon_pages 444472
nr_mapped 78178
nr_file_pages 186535
nr_dirty 236
nr_writeback 0
nr_slab_reclaimable 53697
nr_slab_unreclaimable 11297
nr_page_table_pages 18188
nr_kernel_stack 483
nr_unstable 0
nr_bounce 0
nr_vmscan_write 423678
nr_vmscan_immediate_reclaim 2915
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 50993
nr_dirtied 10098257
nr_written 8809535
nr_pages_scanned 0
workingset_refault 5683710
workingset_activate 1087302
workingset_nodereclaim 1664
nr_anon_transparent_hugepages 334
nr_free_cma 0
protection: (0, 0, 0, 0)
pagesets
cpu: 0
count: 155
high: 186
batch: 31
vm stats threshold: 24
cpu: 1
count: 49
high: 186
batch: 31
vm stats threshold: 24
all_unreclaimable: 0
start_pfn: 4096
inactive_ratio: 4
/proc/vmstat:
nr_free_pages 24041
nr_alloc_batch 1364
nr_inactive_anon 108048
nr_active_anon 397021
nr_inactive_file 42071
nr_active_file 102045
nr_unevictable 0
nr_mlock 0
nr_anon_pages 453175
nr_mapped 79221
nr_file_pages 208686
nr_dirty 977
nr_writeback 0
nr_slab_reclaimable 54008
nr_slab_unreclaimable 11475
nr_page_table_pages 19820
nr_kernel_stack 488
nr_unstable 0
nr_bounce 0
nr_vmscan_write 425540
nr_vmscan_immediate_reclaim 3187
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 50631
nr_dirtied 10151224
nr_written 8851175
nr_pages_scanned 0
workingset_refault 5711048
workingset_activate 1090895
workingset_nodereclaim 1664
nr_anon_transparent_hugepages 331
nr_free_cma 0
nr_dirty_threshold 29656
nr_dirty_background_threshold 14828
pgpgin 26370697
pgpgout 36940756
pswpin 197981
pswpout 424588
pgalloc_dma 379037
pgalloc_dma32 226001662
pgalloc_normal 0
pgalloc_movable 0
pgfree 230530685
pgactivate 8145753
pgdeactivate 9388084
pgfault 205223740
pgmajfault 189721
pgrefill_dma 15435
pgrefill_dma32 10362280
pgrefill_normal 0
pgrefill_movable 0
pgsteal_kswapd_dma 11715
pgsteal_kswapd_dma32 7800447
pgsteal_kswapd_normal 0
pgsteal_kswapd_movable 0
pgsteal_direct_dma 0
pgsteal_direct_dma32 990214
pgsteal_direct_normal 0
pgsteal_direct_movable 0
pgscan_kswapd_dma 15269
pgscan_kswapd_dma32 9268463
pgscan_kswapd_normal 0
pgscan_kswapd_movable 0
pgscan_direct_dma 0
pgscan_direct_dma32 1139388
pgscan_direct_normal 0
pgscan_direct_movable 0
pgscan_direct_throttle 0
pginodesteal 0
slabs_scanned 13515392
kswapd_inodesteal 2787
kswapd_low_wmark_hit_quickly 13889
kswapd_high_wmark_hit_quickly 8171
pageoutrun 24547
allocstall 6766
pgrotated 426791
drop_pagecache 0
drop_slab 0
pgmigrate_success 3318478
pgmigrate_fail 143
compact_migrate_scanned 25250660
compact_free_scanned 1321336375
compact_isolated 8016565
compact_stall 10944
compact_fail 9741
compact_success 1203
htlb_buddy_alloc_success 0
htlb_buddy_alloc_fail 0
unevictable_pgs_culled 934
unevictable_pgs_scanned 0
unevictable_pgs_rescued 3228
unevictable_pgs_mlocked 4060
unevictable_pgs_munlocked 4060
unevictable_pgs_cleared 0
unevictable_pgs_stranded 0
thp_fault_alloc 12914
thp_fault_fallback 9010
thp_collapse_alloc 5147
thp_collapse_alloc_failed 3115
thp_split 217
thp_zero_page_alloc 9
thp_zero_page_alloc_failed 0
[-- Attachment #3: kcrash2.log --]
[-- Type: text/x-log, Size: 39529 bytes --]
SysRq : Changing Loglevel
Loglevel set to 8
SysRq : Show backtrace of all active CPUs
sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 7037 Comm: urpmq Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387de80 ti: ffff88007dddc000 task.ti: ffff88007dddc000
RIP: 0010:[<ffffffff811df82b>] [<ffffffff811df82b>] __const_udelay+0x15/0x29
RSP: 0000:ffff8800bf203b68 EFLAGS: 00000006
RAX: 0000000001062560 RBX: 0000000000002710 RCX: 0000000000000007
RDX: 00000000001859ed RSI: 0000000000000c00 RDI: 0000000000418958
RBP: ffff8800bf203b68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
FS: 00007f20be79b700(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f0428984000 CR3: 0000000012f19000 CR4: 00000000000007f0
Stack:
ffff8800bf203b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
ffff8800bf203b98 ffffffff8126bc4f ffff8800bf203bc8 ffffffff8126c186
ffff88003780c000 0000000000000001 0000000000000026 ffff88003780c001
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
[<ffffffff810d75cc>] ? __zone_watermark_ok+0x7a/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
[<ffffffff810da5c8>] __alloc_pages_nodemask+0x5f0/0x799
[<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
[<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
[<ffffffff8102dced>] __do_page_fault+0x27a/0x358
[<ffffffff8111af2b>] ? new_sync_read+0x74/0x98
[<ffffffff8111b2c3>] ? fsnotify_access+0x5a/0x63
[<ffffffff8111b602>] ? vfs_read+0xac/0xd2
[<ffffffff8111b1f9>] ? fdput_pos.isra.13+0x29/0x30
[<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
NMI backtrace for cpu 1
CPU: 1 PID: 7072 Comm: ps Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387c6e0 ti: ffff880059bcc000 task.ti: ffff880059bcc000
RIP: 0010:[<ffffffff81136da3>] [<ffffffff81136da3>] seq_put_decimal_ull+0x46/0x72
RSP: 0018:ffff880059bcfce8 EFLAGS: 00000206
RAX: 00000000000000ad RBX: ffff880091097480 RCX: 00000000000000ae
RDX: 0000000000000030 RSI: 0000000000000020 RDI: ffff8800b0230000
RBP: ffff880059bcfcf8 R08: 000000000000000a R09: 00000000ffffffff
R10: ffffffff81136749 R11: ffffffff59bcfcb0 R12: ffff880080768000
R13: ffff8800ba205a40 R14: 0000000000000001 R15: 0000000000003d00
FS: 00007f042896a700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000f0b018 CR3: 000000003abb8000 CR4: 00000000000007e0
Stack:
00000000ffffffff ffff880091097480 ffff880059bcfe28 ffffffff8116d751
ffff8800749e8480 0000000000800e06 5300880000000000 ffffffffffffffff
0000000000000000 0000000000000000 0000000000000000 0000000000000000
Call Trace:
[<ffffffff8116d751>] do_task_stat+0x7cf/0x980
[<ffffffff8116e12b>] proc_tgid_stat+0xf/0x11
[<ffffffff81168d8a>] proc_single_show+0x4c/0x6e
[<ffffffff81137069>] seq_read+0x163/0x330
[<ffffffff8111b5d3>] vfs_read+0x7d/0xd2
[<ffffffff811322c1>] ? __fdget_pos+0xd/0x3c
[<ffffffff8111bc4c>] SyS_read+0x42/0x79
[<ffffffff813b9752>] system_call_fastpath+0x12/0x17
Code: 0f 48 8b 0f 48 8d 78 01 48 89 7b 18 40 88 34 01 48 83 fa 09 48 8b 43 18 48 8b 3b 77 10 48 8d 48 01 83 c2 30 48 89 4b 18 88 14 07 <eb> 17 8b 73 08 48 01 c7 29 c6 e8 89 84 0a 00 85 c0 74 0a 48 98
INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took too long to run: 76.962 msecs
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 : Show backtrace of all active CPUs
sending NMI to all CPUs:
NMI backtrace for cpu 1
CPU: 1 PID: 7037 Comm: urpmq Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387de80 ti: ffff88007dddc000 task.ti: ffff88007dddc000
RIP: 0010:[<ffffffff810ef578>] [<ffffffff810ef578>] compact_zone+0x3b6/0x4b2
RSP: 0000:ffff88007dddfa38 EFLAGS: 00000297
RAX: 00000000ffffffff RBX: ffffffff8168be40 RCX: 0000000000000008
RDX: 0000000000000800 RSI: 0000000000000009 RDI: ffffffff8168be40
RBP: ffff88007dddfa98 R08: 0000000000000000 R09: fffffffffffffef1
R10: 0000000000000038 R11: ffffffff8168be40 R12: 00000000000bf800
R13: 00000000000bf600 R14: ffff88007dddfab8 R15: 0000160000000000
FS: 00007f20be79b700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f143453c000 CR3: 0000000012f19000 CR4: 00000000000007e0
Stack:
ffff8800bf312e80 ffffea0002fd0000 0000000000000020 ffff88000387de80
0000000000000004 ffff88007dddfac8 0000000000000000 0000000000000000
0000000000000009 ffff88007dddfcec 0000000000000002 0000000000000000
Call Trace:
[<ffffffff810ef6c0>] compact_zone_order+0x4c/0x5f
[<ffffffff810ef87f>] try_to_compact_pages+0xc4/0x1d6
[<ffffffff813b3118>] __alloc_pages_direct_compact+0x61/0x1bf
[<ffffffff810da5c8>] __alloc_pages_nodemask+0x5f0/0x799
[<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
[<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
[<ffffffff8102dced>] __do_page_fault+0x27a/0x358
[<ffffffff8111af2b>] ? new_sync_read+0x74/0x98
[<ffffffff8111b2c3>] ? fsnotify_access+0x5a/0x63
[<ffffffff8111b602>] ? vfs_read+0xac/0xd2
[<ffffffff8111b1f9>] ? fdput_pos.isra.13+0x29/0x30
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: 00 48 8b 1d 9b 2e 5a 00 48 85 db 74 9e 48 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
NMI backtrace for cpu 0
CPU: 0 PID: 7356 Comm: kwin Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff8800b8c23f00 ti: ffff88009b1f8000 task.ti: ffff88009b1f8000
RIP: 0010:[<ffffffff811df861>] [<ffffffff811df861>] delay_tsc+0x1/0xa2
RSP: 0000:ffff8800bf203b48 EFLAGS: 00000807
RAX: 0000000026e004c0 RBX: 0000000000002710 RCX: 0000000000000007
RDX: 00000000001859f9 RSI: 0000000000000c00 RDI: 00000000001859fa
RBP: ffff8800bf203b58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
FS: 00007f445c0f17c0(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000003a5b1d8 CR3: 00000000a6d15000 CR4: 00000000000007f0
Stack:
ffff8800bf203b58 ffffffff811df814 ffff8800bf203b68 ffffffff811df83d
ffff8800bf203b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
ffff8800bf203b98 ffffffff8126bc4f ffff8800bf203bc8 ffffffff8126c186
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>
[<ffffffff810ef3d9>] ? compact_zone+0x217/0x4b2
[<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
[<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
[<ffffffff8105ca95>] ? set_next_entity+0x3a/0x63
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff810017c3>] ? __switch_to+0x33f/0x49c
[<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff813b66d1>] ? __schedule+0x2d9/0x451
[<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: 7a 01 e8 cd ff ff ff 5d c3 48 69 ff c7 10 00 00 55 48 89 e5 e8 c7 ff ff ff 5d c3 55 48 8d 3c bf 48 89 e5 e8 b8 ff ff 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
INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took too long to run: 182.694 msecs
SysRq : Show backtrace of all active CPUs
sending NMI to all CPUs:
NMI backtrace for cpu 1
CPU: 1 PID: 7037 Comm: urpmq Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387de80 ti: ffff88007dddc000 task.ti: ffff88007dddc000
RIP: 0010:[<ffffffff810d75c9>] [<ffffffff810d75c9>] __zone_watermark_ok+0x77/0x85
RSP: 0000:ffff88007dddfa10 EFLAGS: 00000212
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 000000000000057c RSI: 0000000000000009 RDI: ffffffff8168be40
RBP: ffff88007dddfa18 R08: 0000000000000000 R09: 000000000000ca1f
R10: 0000000000001c5b R11: ffffffff8168be40 R12: 00000000000bf800
R13: 00000000000bf600 R14: ffff88007dddfab8 R15: 0000160000000000
FS: 00007f20be79b700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f143453c000 CR3: 0000000012f19000 CR4: 00000000000007e0
Stack:
ffffffff8168be40 ffff88007dddfa28 ffffffff810d839e ffff88007dddfa98
ffffffff810ef3d7 ffff8800bf312e80 ffffea0002fd0000 0000000000000020
ffff88000387de80 0000000000000004 ffff88007dddfac8 0000000000000000
Call Trace:
[<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
[<ffffffff810da5c8>] __alloc_pages_nodemask+0x5f0/0x799
[<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
[<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
[<ffffffff8102dced>] __do_page_fault+0x27a/0x358
[<ffffffff8111af2b>] ? new_sync_read+0x74/0x98
[<ffffffff8111b2c3>] ? fsnotify_access+0x5a/0x63
[<ffffffff8111b602>] ? vfs_read+0xac/0xd2
[<ffffffff8111b1f9>] ? fdput_pos.isra.13+0x29/0x30
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: d2 31 c0 31 c9 48 03 54 df 18 49 39 d1 7e 27 39 ce 76 21 48 6b d1 58 49 d1 fa 48 8b 94 17 28 01 00 00 48 d3 e2 48 ff c1 49 29 d1 <4d> 39 d1 7f df 31 c0 eb 02 b0 01 5b 5d c3 49 b9 13 da 4b 68 2f
NMI backtrace for cpu 0
CPU: 0 PID: 7356 Comm: kwin Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff8800b8c23f00 ti: ffff88009b1f8000 task.ti: ffff88009b1f8000
RIP: 0010:[<ffffffff811df86a>] [<ffffffff811df86a>] delay_tsc+0xa/0xa2
RSP: 0000:ffff8800bf203b30 EFLAGS: 00000807
RAX: 0000000026e004c0 RBX: 0000000000002710 RCX: 0000000000000007
RDX: 00000000001859f9 RSI: 0000000000000c00 RDI: 00000000001859fa
RBP: ffff8800bf203b48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
FS: 00007f445c0f17c0(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000003a5b1d8 CR3: 00000000a6d15000 CR4: 00000000000007f0
Stack:
0000000000000008 000000000000006c 0000000000000001 ffff8800bf203b58
ffffffff811df814 ffff8800bf203b68 ffffffff811df83d ffff8800bf203b88
ffffffff81025de1 0000000080010002 ffffffff816692b0 ffff8800bf203b98
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>
[<ffffffff810d839e>] ? zone_watermark_ok+0x1a/0x1c
[<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
[<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
[<ffffffff8105ca95>] ? set_next_entity+0x3a/0x63
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff810017c3>] ? __switch_to+0x33f/0x49c
[<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff813b66d1>] ? __schedule+0x2d9/0x451
[<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: 48 69 ff c7 10 00 00 55 48 89 e5 e8 c7 ff ff ff 5d c3 55 48 8d 3c bf 48 89 e5 e8 b8 ff ff 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
SysRq : Show backtrace of all active CPUs
sending NMI to all CPUs:
NMI backtrace for cpu 1
CPU: 1 PID: 7037 Comm: urpmq Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387de80 ti: ffff88007dddc000 task.ti: ffff88007dddc000
RIP: 0010:[<ffffffff8105686f>] [<ffffffff8105686f>] preempt_count_add+0x0/0x8b
RSP: 0000:ffff8800bf303b20 EFLAGS: 00000807
RAX: 0000000026e004c0 RBX: 0000000000002710 RCX: 0000000000000007
RDX: 00000000001859f9 RSI: 0000000000000c00 RDI: 0000000000000001
RBP: ffff8800bf303b48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000046 R11: 0000000000000046 R12: 00000000001859fa
R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
FS: 00007f20be79b700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f143453c000 CR3: 0000000012f19000 CR4: 00000000000007e0
Stack:
ffffffff811df878 0000000000002710 0000000000000008 000000000000006c
0000000000000001 ffff8800bf303b58 ffffffff811df814 ffff8800bf303b68
ffffffff811df83d ffff8800bf303b88 ffffffff81025de1 0000000080010002
Call Trace:
<IRQ>
[<ffffffff811df878>] ? delay_tsc+0x18/0xa2
[<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>
[<ffffffff813b6b95>] ? preempt_schedule_irq+0x3c/0x59
[<ffffffff810d75b8>] ? __zone_watermark_ok+0x66/0x85
[<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
[<ffffffff810da5c8>] __alloc_pages_nodemask+0x5f0/0x799
[<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
[<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
[<ffffffff8102dced>] __do_page_fault+0x27a/0x358
[<ffffffff8111af2b>] ? new_sync_read+0x74/0x98
[<ffffffff8111b2c3>] ? fsnotify_access+0x5a/0x63
[<ffffffff8111b602>] ? vfs_read+0xac/0xd2
[<ffffffff8111b1f9>] ? fdput_pos.isra.13+0x29/0x30
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: 8b 45 00 48 8b 00 48 8b 58 08 48 89 df e8 15 f4 00 00 85 c0 74 0e 48 8b 45 00 48 8b 00 48 8b 00 48 8b 58 08 5a 48 89 d8 5b 5d c3 <55> 48 89 e5 53 89 fb 41 50 65 01 3c 25 90 b8 00 00 83 3d c1 3d
NMI backtrace for cpu 0
CPU: 0 PID: 7356 Comm: kwin Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff8800b8c23f00 ti: ffff88009b1f8000 task.ti: ffff88009b1f8000
RIP: 0010:[<ffffffff810ef3bc>] [<ffffffff810ef3bc>] compact_zone+0x1fa/0x4b2
RSP: 0000:ffff88009b1fba38 EFLAGS: 00000217
RAX: 00000000000bf600 RBX: ffffffff8168be40 RCX: ffff88009b1fba09
RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffff8800b8c23f00
RBP: ffff88009b1fba98 R08: 0000000000000000 R09: fffffffffffffefb
R10: 0000000000000038 R11: ffffffff8168be40 R12: 00000000000bf800
R13: 00000000000bf600 R14: ffff88009b1fbab8 R15: 0000160000000000
FS: 00007f445c0f17c0(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000003a5b1d8 CR3: 00000000a6d15000 CR4: 00000000000007f0
Stack:
ffff8800354be660 ffffea0002fd0000 0000000000000020 ffff8800b8c23f00
0000000000000004 ffff88009b1fbac8 ffff8800a6d1a800 0000000000000000
0000000000000009 ffff88009b1fbcec 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
[<ffffffff8105ca95>] ? set_next_entity+0x3a/0x63
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff810017c3>] ? __switch_to+0x33f/0x49c
[<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff813b66d1>] ? __schedule+0x2d9/0x451
[<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: 00 48 8b 45 b8 f6 40 16 04 0f 85 3e 01 00 00 c6 83 7c 05 00 00 01 e9 32 01 00 00 41 8b 76 48 83 fe ff 0f 84 b4 01 00 00 40 88 f1 <ba> 01 00 00 00 45 31 c0 d3 e2 48 89 df 31 c9 48 63 d2 48 03 53
SysRq : Show backtrace of all active CPUs
sending NMI to all CPUs:
NMI backtrace for cpu 1
CPU: 1 PID: 7037 Comm: urpmq Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387de80 ti: ffff88007dddc000 task.ti: ffff88007dddc000
RIP: 0010:[<ffffffff811df82b>] [<ffffffff811df82b>] __const_udelay+0x15/0x29
RSP: 0000:ffff8800bf303b68 EFLAGS: 00000006
RAX: 0000000001062560 RBX: 0000000000002710 RCX: 0000000000000007
RDX: 00000000001859ed RSI: 0000000000000c00 RDI: 0000000000418958
RBP: ffff8800bf303b68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
FS: 00007f20be79b700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f143453c000 CR3: 0000000012f19000 CR4: 00000000000007e0
Stack:
ffff8800bf303b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
ffff8800bf303b98 ffffffff8126bc4f ffff8800bf303bc8 ffffffff8126c186
ffff88003780c000 0000000000000001 0000000000000026 ffff88003780c001
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>
[<ffffffff810d75c0>] ? __zone_watermark_ok+0x6e/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
[<ffffffff810da5c8>] __alloc_pages_nodemask+0x5f0/0x799
[<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
[<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
[<ffffffff8102dced>] __do_page_fault+0x27a/0x358
[<ffffffff8111af2b>] ? new_sync_read+0x74/0x98
[<ffffffff8111b2c3>] ? fsnotify_access+0x5a/0x63
[<ffffffff8111b602>] ? vfs_read+0xac/0xd2
[<ffffffff8111b1f9>] ? fdput_pos.isra.13+0x29/0x30
[<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
NMI backtrace for cpu 0
CPU: 0 PID: 7356 Comm: kwin Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff8800b8c23f00 ti: ffff88009b1f8000 task.ti: ffff88009b1f8000
RIP: 0010:[<ffffffff810d75af>] [<ffffffff810d75af>] __zone_watermark_ok+0x5d/0x85
RSP: 0000:ffff88009b1fba10 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000007
RDX: 0000000000000f00 RSI: 0000000000000009 RDI: ffffffff8168be40
RBP: ffff88009b1fba18 R08: 0000000000000000 R09: 00000000000006fd
R10: 0000000000000071 R11: ffffffff8168be40 R12: 00000000000bf800
R13: 00000000000bf600 R14: ffff88009b1fbab8 R15: 0000160000000000
FS: 00007f445c0f17c0(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f26fa192000 CR3: 00000000a6d15000 CR4: 00000000000007f0
Stack:
ffffffff8168be40 ffff88009b1fba28 ffffffff810d839e ffff88009b1fba98
ffffffff810ef3d7 ffff8800354be660 ffffea0002fd0000 0000000000000020
ffff8800b8c23f00 0000000000000004 ffff88009b1fbac8 ffff8800a6d1a800
Call Trace:
[<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
[<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
[<ffffffff8105ca95>] ? set_next_entity+0x3a/0x63
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff810017c3>] ? __switch_to+0x33f/0x49c
[<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff813b66d1>] ? __schedule+0x2d9/0x451
[<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: c2 41 80 e0 10 74 11 4c 89 d0 41 b8 04 00 00 00 48 99 49 f7 f8 49 29 c2 4c 89 d2 31 c0 31 c9 48 03 54 df 18 49 39 d1 7e 27 39 ce <76> 21 48 6b d1 58 49 d1 fa 48 8b 94 17 28 01 00 00 48 d3 e2 48
SysRq : Show backtrace of all active CPUs
sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 7356 Comm: kwin Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff8800b8c23f00 ti: ffff88009b1f8000 task.ti: ffff88009b1f8000
RIP: 0010:[<ffffffff811df861>] [<ffffffff811df861>] delay_tsc+0x1/0xa2
RSP: 0000:ffff8800bf203b48 EFLAGS: 00000807
RAX: 0000000026e004c0 RBX: 0000000000002710 RCX: 0000000000000007
RDX: 00000000001859f9 RSI: 0000000000000c00 RDI: 00000000001859fa
RBP: ffff8800bf203b58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
FS: 00007f445c0f17c0(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007ffc189c5640 CR3: 00000000a6d15000 CR4: 00000000000007f0
Stack:
ffff8800bf203b58 ffffffff811df814 ffff8800bf203b68 ffffffff811df83d
ffff8800bf203b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
ffff8800bf203b98 ffffffff8126bc4f ffff8800bf203bc8 ffffffff8126c186
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>
[<ffffffff813ba390>] ? retint_kernel+0x20/0x30
[<ffffffff810d7569>] ? __zone_watermark_ok+0x17/0x85
[<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
[<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
[<ffffffff8105ca95>] ? set_next_entity+0x3a/0x63
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff810017c3>] ? __switch_to+0x33f/0x49c
[<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff813b66d1>] ? __schedule+0x2d9/0x451
[<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: 7a 01 e8 cd ff ff ff 5d c3 48 69 ff c7 10 00 00 55 48 89 e5 e8 c7 ff ff ff 5d c3 55 48 8d 3c bf 48 89 e5 e8 b8 ff ff 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
NMI backtrace for cpu 1
CPU: 1 PID: 7037 Comm: urpmq Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387de80 ti: ffff88007dddc000 task.ti: ffff88007dddc000
RIP: 0010:[<ffffffff810d75af>] [<ffffffff810d75af>] __zone_watermark_ok+0x5d/0x85
RSP: 0000:ffff88007dddfa10 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000007
RDX: 0000000000000f00 RSI: 0000000000000009 RDI: ffffffff8168be40
RBP: ffff88007dddfa18 R08: 0000000000000000 R09: 0000000000000701
R10: 0000000000000071 R11: ffffffff8168be40 R12: 00000000000bf800
R13: 00000000000bf600 R14: ffff88007dddfab8 R15: 0000160000000000
FS: 00007f20be79b700(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f143453c000 CR3: 0000000012f19000 CR4: 00000000000007e0
Stack:
ffffffff8168be40 ffff88007dddfa28 ffffffff810d839e ffff88007dddfa98
ffffffff810ef3d7 ffff8800bf312e80 ffffea0002fd0000 0000000000000020
ffff88000387de80 0000000000000004 ffff88007dddfac8 0000000000000000
Call Trace:
[<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
[<ffffffff810da5c8>] __alloc_pages_nodemask+0x5f0/0x799
[<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
[<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
[<ffffffff8102dced>] __do_page_fault+0x27a/0x358
[<ffffffff8111af2b>] ? new_sync_read+0x74/0x98
[<ffffffff8111b2c3>] ? fsnotify_access+0x5a/0x63
[<ffffffff8111b602>] ? vfs_read+0xac/0xd2
[<ffffffff8111b1f9>] ? fdput_pos.isra.13+0x29/0x30
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: c2 41 80 e0 10 74 11 4c 89 d0 41 b8 04 00 00 00 48 99 49 f7 f8 49 29 c2 4c 89 d2 31 c0 31 c9 48 03 54 df 18 49 39 d1 7e 27 39 ce <76> 21 48 6b d1 58 49 d1 fa 48 8b 94 17 28 01 00 00 48 d3 e2 48
SysRq : Show backtrace of all active CPUs
sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 7037 Comm: urpmq Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff88000387de80 ti: ffff88007dddc000 task.ti: ffff88007dddc000
RIP: 0010:[<ffffffff811df82b>] [<ffffffff811df82b>] __const_udelay+0x15/0x29
RSP: 0000:ffff8800bf203b68 EFLAGS: 00000006
RAX: 0000000001062560 RBX: 0000000000002710 RCX: 0000000000000007
RDX: 00000000001859ed RSI: 0000000000000c00 RDI: 0000000000418958
RBP: ffff8800bf203b68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000046 R11: 0000000000000046 R12: 0000000000000008
R13: 000000000000006c R14: 0000000000000001 R15: ffffffff81668f90
FS: 00007f20be79b700(0000) GS:ffff8800bf200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007faaeda2a000 CR3: 0000000012f19000 CR4: 00000000000007f0
Stack:
ffff8800bf203b88 ffffffff81025de1 0000000080010002 ffffffff816692b0
ffff8800bf203b98 ffffffff8126bc4f ffff8800bf203bc8 ffffffff8126c186
ffff88003780c000 0000000000000001 0000000000000026 ffff88003780c001
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>
[<ffffffff810ef3d7>] ? compact_zone+0x215/0x4b2
[<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
[<ffffffff810da5c8>] __alloc_pages_nodemask+0x5f0/0x799
[<ffffffff811163bb>] do_huge_pmd_anonymous_page+0x13c/0x255
[<ffffffff810f65bd>] handle_mm_fault+0x112/0x808
[<ffffffff8102dced>] __do_page_fault+0x27a/0x358
[<ffffffff8111af2b>] ? new_sync_read+0x74/0x98
[<ffffffff8111b2c3>] ? fsnotify_access+0x5a/0x63
[<ffffffff8111b602>] ? vfs_read+0xac/0xd2
[<ffffffff8111b1f9>] ? fdput_pos.isra.13+0x29/0x30
[<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
NMI backtrace for cpu 1
CPU: 1 PID: 7356 Comm: kwin Not tainted 3.18.0-rc3+ #46
Hardware name: Acer TravelMate 5720 /Columbia , BIOS V1.34 04/15/2008
task: ffff8800b8c23f00 ti: ffff88009b1f8000 task.ti: ffff88009b1f8000
RIP: 0010:[<ffffffff810ef3d9>] [<ffffffff810ef3d9>] compact_zone+0x217/0x4b2
RSP: 0000:ffff88009b1fba38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8168be40 RCX: 0000000000000008
RDX: 0000000000000800 RSI: 0000000000000009 RDI: ffffffff8168be40
RBP: ffff88009b1fba98 R08: 0000000000000000 R09: ffffffffffffff01
R10: 0000000000000038 R11: ffffffff8168be40 R12: 00000000000bf800
R13: 00000000000bf600 R14: ffff88009b1fbab8 R15: 0000160000000000
FS: 00007f445c0f17c0(0000) GS:ffff8800bf300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000003a5b1d8 CR3: 00000000a6d15000 CR4: 00000000000007e0
Stack:
ffff8800354be660 ffffea0002fd0000 0000000000000020 ffff8800b8c23f00
0000000000000004 ffff88009b1fbac8 ffff8800a6d1a800 0000000000000000
0000000000000009 ffff88009b1fbcec 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
[<ffffffff8105ca95>] ? set_next_entity+0x3a/0x63
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff810017c3>] ? __switch_to+0x33f/0x49c
[<ffffffff813b9028>] ? _raw_spin_unlock_irq+0x14/0x27
[<ffffffff811e952e>] ? debug_smp_processor_id+0x17/0x19
[<ffffffff813b66d1>] ? __schedule+0x2d9/0x451
[<ffffffff810f9997>] ? SyS_mmap_pgoff+0x183/0x1cf
[<ffffffff8102ddf8>] do_page_fault+0xc/0xe
[<ffffffff813bb162>] page_fault+0x22/0x30
Code: 76 48 83 fe ff 0f 84 b4 01 00 00 40 88 f1 ba 01 00 00 00 45 31 c0 d3 e2 48 89 df 31 c9 48 63 d2 48 03 53 08 e8 ad 8f fe ff 84 c0 <0f> 84 8e 01 00 00 41 8b 56 48 89 d0 83 f8 0a 0f 87 7f 01 00 00
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-08 13:11 ` P. Christeas
@ 2014-11-08 22:18 ` Vlastimil Babka
2014-11-09 8:27 ` Pavel Machek
` (2 more replies)
0 siblings, 3 replies; 20+ messages in thread
From: Vlastimil Babka @ 2014-11-08 22:18 UTC (permalink / raw)
To: P. Christeas
Cc: linux-mm, Joonsoo Kim, lkml, David Rientjes, Norbert Preining,
Markus Trippelsdorf, Pavel Machek
On 11/08/2014 02:11 PM, P. Christeas wrote:
> On Thursday 06 November 2014, Vlastimil Babka wrote:
>>> On Wednesday 05 November 2014, Vlastimil Babka wrote:
>>>> Can you please try the following patch?
>>>> - compaction_defer_reset(zone, order, false);
>> Oh and did I ask in this thread for /proc/zoneinfo yet? :)
>
> Using that same kernel[1], got again into a race, gathered a few more data.
>
> This time, I had 1x "urpmq" process [2] hung at 100% CPU , when "kwin" got
> apparently blocked (100% CPU, too) trying to resize a GUI window. I suppose
> the resizing operation would mean heavy memory alloc/free.
>
> The rest of the system was responsive, I could easily get a console, login,
> gather the files.. Then, I have *killed* -9 the "urpmq" process, which solved
> the race and my system is still alive! "kwin" is still running, returned to
> regular CPU load.
>
> Attached is traces from SysRq+l (pressed a few times, wanted to "snapshot" the
> stack) and /proc/zoneinfo + /proc/vmstat
>
> Bisection is not yet meaningful, IMHO, because I cannot be sure that "good"
> points are really free from this issue. I'd estimate that each test would take
> +3days, unless I really find a deterministic way to reproduce the issue .
Hi,
I think I finally found the cause by staring into the code... CCing
people from all 4 separate threads I know about this issue.
The problem with finding the cause was that the first report I got from
Markus was about isolate_freepages_block() overhead, and later Norbert
reported that reverting a patch for isolate_freepages* helped. But the
problem seems to be that although the loop in isolate_migratepages exits
because the scanners almost meet (they are within same pageblock), they
don't truly meet, therefore compact_finished() decides to continue, but
isolate_migratepages() exits immediately... boom! But indeed e14c720efdd7
made this situation possible, as free scaner pfn can now point to a
middle of pageblock.
So I hope the attached patch will fix the soft-lockup issues in
compact_zone. Please apply on 3.18-rc3 or later without any other reverts,
and test. It probably won't help Markus and his isolate_freepages_block()
overhead though...
Thanks,
Vlastimil
------8<------
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
@ 2014-11-09 4:47 Hillf Danton
2014-11-09 8:22 ` P. Christeas
0 siblings, 1 reply; 20+ messages in thread
From: Hillf Danton @ 2014-11-09 4:47 UTC (permalink / raw)
To: 'P. Christeas'
Cc: 'Vlastimil Babka', linux-mm, 'Joonsoo Kim',
linux-kernel, Hillf Danton
> > 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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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-09 4:47 Hillf Danton
@ 2014-11-09 8:22 ` P. Christeas
2014-11-09 9:35 ` Vlastimil Babka
0 siblings, 1 reply; 20+ messages in thread
From: P. Christeas @ 2014-11-09 8:22 UTC (permalink / raw)
To: Hillf Danton, linux-kernel; +Cc: 'Vlastimil Babka', linux-mm
On Sunday 09 November 2014, Hillf Danton wrote:
> - return COMPACT_CONTINUE;
> + return COMPACT_SKIPPED;
I guess this one would mitigate against Vlastmil's migration scanner issue,
wouldn't it?
In that case, I should wait a bit[1] to try the first patch, then revert, try
yours and (hopefully) have some results.
Then, apply both.
[1] trying to push the vm by loading memory-hungry apps and random load.
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-08 22:18 ` Vlastimil Babka
@ 2014-11-09 8:27 ` Pavel Machek
2014-11-09 9:43 ` Vlastimil Babka
2014-11-10 6:07 ` Joonsoo Kim
2014-11-10 8:14 ` P. Christeas
2 siblings, 1 reply; 20+ messages in thread
From: Pavel Machek @ 2014-11-09 8:27 UTC (permalink / raw)
To: Vlastimil Babka
Cc: P. Christeas, linux-mm, Joonsoo Kim, lkml, David Rientjes,
Norbert Preining, Markus Trippelsdorf
[-- Attachment #1: Type: text/plain, Size: 2258 bytes --]
Hi!
> >> Oh and did I ask in this thread for /proc/zoneinfo yet? :)
> >
> > Using that same kernel[1], got again into a race, gathered a few more data.
> >
> > This time, I had 1x "urpmq" process [2] hung at 100% CPU , when "kwin" got
> > apparently blocked (100% CPU, too) trying to resize a GUI window. I suppose
> > the resizing operation would mean heavy memory alloc/free.
> >
> > The rest of the system was responsive, I could easily get a console, login,
> > gather the files.. Then, I have *killed* -9 the "urpmq" process, which solved
> > the race and my system is still alive! "kwin" is still running, returned to
> > regular CPU load.
> >
> > Attached is traces from SysRq+l (pressed a few times, wanted to "snapshot" the
> > stack) and /proc/zoneinfo + /proc/vmstat
> >
> > Bisection is not yet meaningful, IMHO, because I cannot be sure that "good"
> > points are really free from this issue. I'd estimate that each test would take
> > +3days, unless I really find a deterministic way to reproduce the issue .
>
> Hi,
>
> I think I finally found the cause by staring into the code... CCing
> people from all 4 separate threads I know about this issue.
> The problem with finding the cause was that the first report I got from
> Markus was about isolate_freepages_block() overhead, and later Norbert
> reported that reverting a patch for isolate_freepages* helped. But the
> problem seems to be that although the loop in isolate_migratepages exits
> because the scanners almost meet (they are within same pageblock), they
> don't truly meet, therefore compact_finished() decides to continue, but
> isolate_migratepages() exits immediately... boom! But indeed e14c720efdd7
> made this situation possible, as free scaner pfn can now point to a
> middle of pageblock.
Ok, it seems it happened second time now, again shortly after
resume. I guess I should apply your patch after all.
(Or... instead it should go to Linus ASAP -- it fixes known problem
that is affected people, and we want it in soon in case it is not
complete fix.)
Dmesg is in the attachment, perhaps it helps.
Pavel
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-09 8:22 ` P. Christeas
@ 2014-11-09 9:35 ` Vlastimil Babka
2014-11-10 3:23 ` Hillf Danton
0 siblings, 1 reply; 20+ messages in thread
From: Vlastimil Babka @ 2014-11-09 9:35 UTC (permalink / raw)
To: P. Christeas, Hillf Danton, linux-kernel; +Cc: linux-mm
On 11/09/2014 09:22 AM, P. Christeas wrote:
> On Sunday 09 November 2014, Hillf Danton wrote:
>> - return COMPACT_CONTINUE;
>> + return COMPACT_SKIPPED;
>
> I guess this one would mitigate against Vlastmil's migration scanner issue,
> wouldn't it?
Please no, that's a wrong fix. The purpose of compaction is to make the
high-order watermark meet, not give up.
> In that case, I should wait a bit[1] to try the first patch, then revert, try
> yours and (hopefully) have some results.
I hope my patch will be enough,
> Then, apply both.
>
> [1] trying to push the vm by loading memory-hungry apps and random load.
Maybe the tools/testing/selftests/vm/transhuge-stress could help
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-09 8:27 ` Pavel Machek
@ 2014-11-09 9:43 ` Vlastimil Babka
2014-11-09 22:32 ` Norbert Preining
0 siblings, 1 reply; 20+ messages in thread
From: Vlastimil Babka @ 2014-11-09 9:43 UTC (permalink / raw)
To: Pavel Machek
Cc: P. Christeas, linux-mm, Joonsoo Kim, lkml, David Rientjes,
Norbert Preining, Markus Trippelsdorf
On 11/09/2014 09:27 AM, Pavel Machek wrote:
> Hi!
>
>>>> Oh and did I ask in this thread for /proc/zoneinfo yet? :)
>>>
>>> Using that same kernel[1], got again into a race, gathered a few more data.
>>>
>>> This time, I had 1x "urpmq" process [2] hung at 100% CPU , when "kwin" got
>>> apparently blocked (100% CPU, too) trying to resize a GUI window. I suppose
>>> the resizing operation would mean heavy memory alloc/free.
>>>
>>> The rest of the system was responsive, I could easily get a console, login,
>>> gather the files.. Then, I have *killed* -9 the "urpmq" process, which solved
>>> the race and my system is still alive! "kwin" is still running, returned to
>>> regular CPU load.
>>>
>>> Attached is traces from SysRq+l (pressed a few times, wanted to "snapshot" the
>>> stack) and /proc/zoneinfo + /proc/vmstat
>>>
>>> Bisection is not yet meaningful, IMHO, because I cannot be sure that "good"
>>> points are really free from this issue. I'd estimate that each test would take
>>> +3days, unless I really find a deterministic way to reproduce the issue .
>>
>> Hi,
>>
>> I think I finally found the cause by staring into the code... CCing
>> people from all 4 separate threads I know about this issue.
>> The problem with finding the cause was that the first report I got from
>> Markus was about isolate_freepages_block() overhead, and later Norbert
>> reported that reverting a patch for isolate_freepages* helped. But the
>> problem seems to be that although the loop in isolate_migratepages exits
>> because the scanners almost meet (they are within same pageblock), they
>> don't truly meet, therefore compact_finished() decides to continue, but
>> isolate_migratepages() exits immediately... boom! But indeed e14c720efdd7
>> made this situation possible, as free scaner pfn can now point to a
>> middle of pageblock.
>
> Ok, it seems it happened second time now, again shortly after
> resume. I guess I should apply your patch after all.
Thanks.
> (Or... instead it should go to Linus ASAP -- it fixes known problem
> that is affected people, and we want it in soon in case it is not
> complete fix.)
I don't want to send untested fix, and wasn't able to reproduce the bug
myself. I think Norbert could do it rather quickly so I hope he can tell
us soon.
> Dmesg is in the attachment, perhaps it helps.
> Pavel
It looks the same as before, so no surprises there, which is good.
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-09 9:43 ` Vlastimil Babka
@ 2014-11-09 22:32 ` Norbert Preining
0 siblings, 0 replies; 20+ messages in thread
From: Norbert Preining @ 2014-11-09 22:32 UTC (permalink / raw)
To: Vlastimil Babka
Cc: Pavel Machek, P. Christeas, linux-mm, Joonsoo Kim, lkml,
David Rientjes, Markus Trippelsdorf
Hi Vlastimil, hi all,
On Sun, 09 Nov 2014, Vlastimil Babka wrote:
> I don't want to send untested fix, and wasn't able to reproduce the bug
> myself. I think Norbert could do it rather quickly so I hope he can tell
> us soon.
Sorry, weekend means I am away from my laptop for extended times,
and I wanted to give it a bit of stress testing.
No problems till now, no hangs, all working as expected with
your latest patch.
Thanks a lot
Norbert
------------------------------------------------------------------------
PREINING, Norbert http://www.preining.info
JAIST, Japan TeX Live & Debian Developer
GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13
------------------------------------------------------------------------
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-09 9:35 ` Vlastimil Babka
@ 2014-11-10 3:23 ` Hillf Danton
0 siblings, 0 replies; 20+ messages in thread
From: Hillf Danton @ 2014-11-10 3:23 UTC (permalink / raw)
To: 'Vlastimil Babka', 'P. Christeas',
'linux-kernel'
Cc: linux-mm
> >
> > I guess this one would mitigate against Vlastmil's migration scanner issue,
> > wouldn't it?
>
Nope, I wanted to see if free pages are low enough.
> Please no, that's a wrong fix. The purpose of compaction is to make the
> high-order watermark meet, not give up.
>
Yupe, have to spin.
--- a/mm/compaction.c Sun Nov 9 12:02:59 2014
+++ b/mm/compaction.c Mon Nov 10 11:12:07 2014
@@ -1074,6 +1074,8 @@ static int compact_finished(struct zone
watermark = low_wmark_pages(zone);
watermark += (1 << cc->order);
+ if (!zone_watermark_ok(zone, 0, watermark, 0, 0))
+ return COMPACT_SKIPPED;
if (!zone_watermark_ok(zone, cc->order, watermark, 0, 0))
return COMPACT_CONTINUE;
--
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-08 22:18 ` Vlastimil Babka
2014-11-09 8:27 ` Pavel Machek
@ 2014-11-10 6:07 ` Joonsoo Kim
2014-11-10 7:53 ` Vlastimil Babka
2014-11-10 8:14 ` P. Christeas
2 siblings, 1 reply; 20+ messages in thread
From: Joonsoo Kim @ 2014-11-10 6:07 UTC (permalink / raw)
To: Vlastimil Babka
Cc: P. Christeas, linux-mm, lkml, David Rientjes, Norbert Preining,
Markus Trippelsdorf, Pavel Machek
On Sat, Nov 08, 2014 at 11:18:37PM +0100, Vlastimil Babka wrote:
> On 11/08/2014 02:11 PM, P. Christeas wrote:
> > On Thursday 06 November 2014, Vlastimil Babka wrote:
> >>> On Wednesday 05 November 2014, Vlastimil Babka wrote:
> >>>> Can you please try the following patch?
> >>>> - compaction_defer_reset(zone, order, false);
> >> Oh and did I ask in this thread for /proc/zoneinfo yet? :)
> >
> > Using that same kernel[1], got again into a race, gathered a few more data.
> >
> > This time, I had 1x "urpmq" process [2] hung at 100% CPU , when "kwin" got
> > apparently blocked (100% CPU, too) trying to resize a GUI window. I suppose
> > the resizing operation would mean heavy memory alloc/free.
> >
> > The rest of the system was responsive, I could easily get a console, login,
> > gather the files.. Then, I have *killed* -9 the "urpmq" process, which solved
> > the race and my system is still alive! "kwin" is still running, returned to
> > regular CPU load.
> >
> > Attached is traces from SysRq+l (pressed a few times, wanted to "snapshot" the
> > stack) and /proc/zoneinfo + /proc/vmstat
> >
> > Bisection is not yet meaningful, IMHO, because I cannot be sure that "good"
> > points are really free from this issue. I'd estimate that each test would take
> > +3days, unless I really find a deterministic way to reproduce the issue .
>
> Hi,
>
> I think I finally found the cause by staring into the code... CCing
> people from all 4 separate threads I know about this issue.
> The problem with finding the cause was that the first report I got from
> Markus was about isolate_freepages_block() overhead, and later Norbert
> reported that reverting a patch for isolate_freepages* helped. But the
> problem seems to be that although the loop in isolate_migratepages exits
> because the scanners almost meet (they are within same pageblock), they
> don't truly meet, therefore compact_finished() decides to continue, but
> isolate_migratepages() exits immediately... boom! But indeed e14c720efdd7
> made this situation possible, as free scaner pfn can now point to a
> middle of pageblock.
Indeed.
>
> So I hope the attached patch will fix the soft-lockup issues in
> compact_zone. Please apply on 3.18-rc3 or later without any other reverts,
> and test. It probably won't help Markus and his isolate_freepages_block()
> overhead though...
Yes, I found this bug too, but, it can't explain
isolate_freepages_block() overhead. Anyway, I can't find another bug
related to isolate_freepages_block(). :/
> Thanks,
> Vlastimil
>
> ------8<------
> >From fbf8eb0bcd2897090312e23da6a31bad9cc6b337 Mon Sep 17 00:00:00 2001
> From: Vlastimil Babka <vbabka@suse.cz>
> Date: Sat, 8 Nov 2014 22:20:43 +0100
> Subject: [PATCH] mm, compaction: prevent endless loop in migrate scanner
>
> ---
> mm/compaction.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/mm/compaction.c b/mm/compaction.c
> index ec74cf0..1b7a1be 100644
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -1029,8 +1029,12 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone,
> }
>
> acct_isolated(zone, cc);
> - /* Record where migration scanner will be restarted */
> - cc->migrate_pfn = low_pfn;
> + /*
> + * Record where migration scanner will be restarted. If we end up in
> + * the same pageblock as the free scanner, make the scanners fully
> + * meet so that compact_finished() terminates compaction.
> + */
> + cc->migrate_pfn = (end_pfn <= cc->free_pfn) ? low_pfn : cc->free_pfn;
>
> return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE;
> }
IMHO, proper fix is not to change this logic, but, to change decision
logic in compact_finished() and in compact_zone(). Maybe helper
function would be good for readability.
Thanks.
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-10 6:07 ` Joonsoo Kim
@ 2014-11-10 7:53 ` Vlastimil Babka
2014-11-10 8:05 ` Joonsoo Kim
0 siblings, 1 reply; 20+ messages in thread
From: Vlastimil Babka @ 2014-11-10 7:53 UTC (permalink / raw)
To: Joonsoo Kim
Cc: P. Christeas, linux-mm, lkml, David Rientjes, Norbert Preining,
Markus Trippelsdorf, Pavel Machek
On 11/10/2014 07:07 AM, Joonsoo Kim wrote:
> On Sat, Nov 08, 2014 at 11:18:37PM +0100, Vlastimil Babka wrote:
>> On 11/08/2014 02:11 PM, P. Christeas wrote:
>>
>> Hi,
>>
>> I think I finally found the cause by staring into the code... CCing
>> people from all 4 separate threads I know about this issue.
>> The problem with finding the cause was that the first report I got from
>> Markus was about isolate_freepages_block() overhead, and later Norbert
>> reported that reverting a patch for isolate_freepages* helped. But the
>> problem seems to be that although the loop in isolate_migratepages exits
>> because the scanners almost meet (they are within same pageblock), they
>> don't truly meet, therefore compact_finished() decides to continue, but
>> isolate_migratepages() exits immediately... boom! But indeed e14c720efdd7
>> made this situation possible, as free scaner pfn can now point to a
>> middle of pageblock.
>
> Indeed.
>
>>
>> So I hope the attached patch will fix the soft-lockup issues in
>> compact_zone. Please apply on 3.18-rc3 or later without any other reverts,
>> and test. It probably won't help Markus and his isolate_freepages_block()
>> overhead though...
>
> Yes, I found this bug too, but, it can't explain
> isolate_freepages_block() overhead. Anyway, I can't find another bug
> related to isolate_freepages_block(). :/
Thanks for checking.
>> Thanks,
>> Vlastimil
>>
>> ------8<------
>> >From fbf8eb0bcd2897090312e23da6a31bad9cc6b337 Mon Sep 17 00:00:00 2001
>> From: Vlastimil Babka <vbabka@suse.cz>
>> Date: Sat, 8 Nov 2014 22:20:43 +0100
>> Subject: [PATCH] mm, compaction: prevent endless loop in migrate scanner
>>
>> ---
>> mm/compaction.c | 8 ++++++--
>> 1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/mm/compaction.c b/mm/compaction.c
>> index ec74cf0..1b7a1be 100644
>> --- a/mm/compaction.c
>> +++ b/mm/compaction.c
>> @@ -1029,8 +1029,12 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone,
>> }
>>
>> acct_isolated(zone, cc);
>> - /* Record where migration scanner will be restarted */
>> - cc->migrate_pfn = low_pfn;
>> + /*
>> + * Record where migration scanner will be restarted. If we end up in
>> + * the same pageblock as the free scanner, make the scanners fully
>> + * meet so that compact_finished() terminates compaction.
>> + */
>> + cc->migrate_pfn = (end_pfn <= cc->free_pfn) ? low_pfn : cc->free_pfn;
>>
>> return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE;
>> }
>
> IMHO, proper fix is not to change this logic, but, to change decision
> logic in compact_finished() and in compact_zone(). Maybe helper
> function would be good for readability.
OK but I would think that to fix 3.18 ASAP and not introduce more
regressions, go with the patch above first, as it is the minimal fix and
people already test it. Then we can implement your suggestion later as a
cleanup for 3.19?
Vlastimil
> Thanks.
>
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-10 7:53 ` Vlastimil Babka
@ 2014-11-10 8:05 ` Joonsoo Kim
0 siblings, 0 replies; 20+ messages in thread
From: Joonsoo Kim @ 2014-11-10 8:05 UTC (permalink / raw)
To: Vlastimil Babka
Cc: P. Christeas, linux-mm, lkml, David Rientjes, Norbert Preining,
Markus Trippelsdorf, Pavel Machek
On Mon, Nov 10, 2014 at 08:53:38AM +0100, Vlastimil Babka wrote:
> On 11/10/2014 07:07 AM, Joonsoo Kim wrote:
> >On Sat, Nov 08, 2014 at 11:18:37PM +0100, Vlastimil Babka wrote:
> >>On 11/08/2014 02:11 PM, P. Christeas wrote:
> >>
> >>Hi,
> >>
> >>I think I finally found the cause by staring into the code... CCing
> >>people from all 4 separate threads I know about this issue.
> >>The problem with finding the cause was that the first report I got from
> >>Markus was about isolate_freepages_block() overhead, and later Norbert
> >>reported that reverting a patch for isolate_freepages* helped. But the
> >>problem seems to be that although the loop in isolate_migratepages exits
> >>because the scanners almost meet (they are within same pageblock), they
> >>don't truly meet, therefore compact_finished() decides to continue, but
> >>isolate_migratepages() exits immediately... boom! But indeed e14c720efdd7
> >>made this situation possible, as free scaner pfn can now point to a
> >>middle of pageblock.
> >
> >Indeed.
> >
> >>
> >>So I hope the attached patch will fix the soft-lockup issues in
> >>compact_zone. Please apply on 3.18-rc3 or later without any other reverts,
> >>and test. It probably won't help Markus and his isolate_freepages_block()
> >>overhead though...
> >
> >Yes, I found this bug too, but, it can't explain
> >isolate_freepages_block() overhead. Anyway, I can't find another bug
> >related to isolate_freepages_block(). :/
>
> Thanks for checking.
>
> >>Thanks,
> >>Vlastimil
> >>
> >>------8<------
> >>>From fbf8eb0bcd2897090312e23da6a31bad9cc6b337 Mon Sep 17 00:00:00 2001
> >>From: Vlastimil Babka <vbabka@suse.cz>
> >>Date: Sat, 8 Nov 2014 22:20:43 +0100
> >>Subject: [PATCH] mm, compaction: prevent endless loop in migrate scanner
> >>
> >>---
> >> mm/compaction.c | 8 ++++++--
> >> 1 file changed, 6 insertions(+), 2 deletions(-)
> >>
> >>diff --git a/mm/compaction.c b/mm/compaction.c
> >>index ec74cf0..1b7a1be 100644
> >>--- a/mm/compaction.c
> >>+++ b/mm/compaction.c
> >>@@ -1029,8 +1029,12 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone,
> >> }
> >>
> >> acct_isolated(zone, cc);
> >>- /* Record where migration scanner will be restarted */
> >>- cc->migrate_pfn = low_pfn;
> >>+ /*
> >>+ * Record where migration scanner will be restarted. If we end up in
> >>+ * the same pageblock as the free scanner, make the scanners fully
> >>+ * meet so that compact_finished() terminates compaction.
> >>+ */
> >>+ cc->migrate_pfn = (end_pfn <= cc->free_pfn) ? low_pfn : cc->free_pfn;
> >>
> >> return cc->nr_migratepages ? ISOLATE_SUCCESS : ISOLATE_NONE;
> >> }
> >
> >IMHO, proper fix is not to change this logic, but, to change decision
> >logic in compact_finished() and in compact_zone(). Maybe helper
> >function would be good for readability.
>
> OK but I would think that to fix 3.18 ASAP and not introduce more
> regressions, go with the patch above first, as it is the minimal fix
> and people already test it. Then we can implement your suggestion
> later as a cleanup for 3.19?
Yeap. Agreed.
Thanks.
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^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c
2014-11-08 22:18 ` Vlastimil Babka
2014-11-09 8:27 ` Pavel Machek
2014-11-10 6:07 ` Joonsoo Kim
@ 2014-11-10 8:14 ` P. Christeas
2 siblings, 0 replies; 20+ messages in thread
From: P. Christeas @ 2014-11-10 8:14 UTC (permalink / raw)
To: Vlastimil Babka, Markus Trippelsdorf
Cc: linux-mm, Joonsoo Kim, lkml, Pavel Machek
On Saturday 08 November 2014, Vlastimil Babka wrote:
> >From fbf8eb0bcd2897090312e23da6a31bad9cc6b337 Mon Sep 17 00:00:00 2001
>
> From: Vlastimil Babka <vbabka@suse.cz>
> Date: Sat, 8 Nov 2014 22:20:43 +0100
> Subject: [PATCH] mm, compaction: prevent endless loop in migrate scanner
After 30hrs uptime, I also mark this test as PASSED .
:)
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^ permalink raw reply [flat|nested] 20+ messages in thread
end of thread, other threads:[~2014-11-10 8:14 UTC | newest]
Thread overview: 20+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-11-04 7:26 Early test: hangs in mm/compact.c w. Linus's 12d7aacab56e9ef185c P. Christeas
2014-11-04 8:55 ` Vlastimil Babka
2014-11-04 9:36 ` P. Christeas
2014-11-05 15:26 ` Vlastimil Babka
2014-11-05 16:02 ` P. Christeas
2014-11-06 19:23 ` P. Christeas
2014-11-06 21:38 ` Vlastimil Babka
2014-11-08 13:11 ` P. Christeas
2014-11-08 22:18 ` Vlastimil Babka
2014-11-09 8:27 ` Pavel Machek
2014-11-09 9:43 ` Vlastimil Babka
2014-11-09 22:32 ` Norbert Preining
2014-11-10 6:07 ` Joonsoo Kim
2014-11-10 7:53 ` Vlastimil Babka
2014-11-10 8:05 ` Joonsoo Kim
2014-11-10 8:14 ` P. Christeas
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2014-11-09 4:47 Hillf Danton
2014-11-09 8:22 ` P. Christeas
2014-11-09 9:35 ` Vlastimil Babka
2014-11-10 3:23 ` Hillf Danton
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