lkml.org 
[lkml]   [2012]   [Dec]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 0/9] Avoid populating unbounded num of ptes with mmap_sem held
On Fri, Dec 21, 2012 at 5:59 PM, Michel Lespinasse <walken@google.com> wrote:
> On Fri, Dec 21, 2012 at 5:09 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>> On Fri, Dec 21, 2012 at 4:59 PM, Michel Lespinasse <walken@google.com> wrote:
>>> On Fri, Dec 21, 2012 at 4:36 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>>>> Something's buggy here. My evil test case is stuck with lots of
>>>> threads spinning at 100% system time.
>>>>
>>>> The tasks in question use MCL_FUTURE but not MAP_POPULATE. These
>>>> tasks are immune to SIGKILL.
>>>
>>> Looking into it.
>>>
>>> There seems to be a problem with mlockall - the following program
>>> fails in an unkillable way even before my changes:
>>>
>>> #include <sys/mman.h>
>>> #include <stdio.h>
>>> #include <stdint.h>
>>>
>>> int main(void) {
>>> void *p = mmap(NULL, 0x100000000000,
>>> PROT_READ | PROT_WRITE,
>>> MAP_PRIVATE | MAP_ANON | MAP_NORESERVE,
>>> -1, 0);
>>> printf("p: %p\n", p);
>>> mlockall(MCL_CURRENT);
>>> return 0;
>>> }
>>>
>>> I think my changes propagate this existing problem so it now shows up
>>> in more places :/
>
> So in my test case, the issue was caused by the mapping being 2^32
> pages, which overflowed the integer 'nr_pages' argument to
> __get_user_pages, which caused an infinite loop as __get_user_pages()
> would return 0 so __mm_populate() would make no progress.
>
> When dropping one zero from that humongous size in the test case, the
> test case becomes at least killable.
>
>> Hmm. I'm using MCL_FUTURE with MAP_NORESERVE, but those mappings are
>> not insanely large. Should MAP_NORESERVE would negate MCL_FUTURE?
>> I'm doing MAP_NORESERVE, PROT_NONE to prevent pages from being
>> allocated in the future -- I have no intention of ever using them.
>
> MAP_NORESERVE doesn't prevent page allocation, but PROT_NONE does
> (precisely because people use it the same way as you do :)
>
>> The other odd thing I do is use MAP_FIXED to replace MAP_NORESERVE pages.
> Yes, I've seen people do that here too.
>
> Could you share your test case so I can try reproducing the issue
> you're seeing ?

Not so easy. My test case is a large chunk of a high-frequency
trading system :)

I just tried it again. Not I have a task stuck in
mlockall(MCL_CURRENT|MCL_FUTURE). The stack is:

[<0000000000000000>] flush_work+0x1c2/0x280
[<0000000000000000>] schedule_on_each_cpu+0xe3/0x130
[<0000000000000000>] lru_add_drain_all+0x15/0x20
[<0000000000000000>] sys_mlockall+0x125/0x1a0
[<0000000000000000>] tracesys+0xd0/0xd5
[<0000000000000000>] 0xffffffffffffffff

The sequence of mmap and munmap calls, according to strace, is:

6084 mmap(NULL, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0e4000
6084 mmap(NULL, 8388744, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55096c3000
6084 mmap(0x7f5509ec2000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3ff000) = 0x7f5509ec2000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0e3000
6084 mmap(NULL, 2413688, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5509475000
6084 mmap(0x7f550969c000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x27000) = 0x7f550969c000
6084 mmap(0x7f550969e000, 148600, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f550969e000
6084 mmap(NULL, 12636304, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5508867000
6084 mmap(0x7f5509420000, 327680, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7b9000) = 0x7f5509420000
6084 mmap(0x7f5509470000, 16528, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5509470000
6084 mmap(NULL, 8409224, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5508061000
6084 mmap(0x7f550885b000, 36864, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3fa000) = 0x7f550885b000
6084 mmap(0x7f5508864000, 8328, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5508864000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5508060000
6084 mmap(NULL, 8404144, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f550785c000
6084 mmap(0x7f5508054000, 45056, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3f8000) = 0x7f5508054000
6084 mmap(0x7f550805f000, 3248, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f550805f000
6084 mmap(NULL, 8390584, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f550705b000
6084 mmap(0x7f5507859000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3fe000) = 0x7f5507859000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550705a000
6084 mmap(NULL, 8393296, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5506858000
6084 mmap(0x7f5507055000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3fd000) = 0x7f5507055000
6084 mmap(0x7f5507059000, 592, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5507059000
6084 mmap(NULL, 8393224, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5506056000
6084 mmap(0x7f5506855000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3ff000) = 0x7f5506855000
6084 mmap(0x7f5506857000, 520, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5506857000
6084 mmap(NULL, 46777, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f550604a000
6084 mmap(NULL, 2109672, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5505e46000
6084 mmap(0x7f5506048000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f5506048000
6084 mmap(NULL, 3150176, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5505b44000
6084 mmap(0x7f5505e3e000, 28672, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xfa000) = 0x7f5505e3e000
6084 mmap(0x7f5505e45000, 352, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5505e45000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0e2000
6084 mmap(NULL, 2217600, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5505926000
6084 mmap(0x7f5505b42000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c000) = 0x7f5505b42000
6084 mmap(NULL, 2509488, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55056c1000
6084 mmap(0x7f5505922000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x61000) = 0x7f5505922000
6084 mmap(NULL, 3073904, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55053d2000
6084 mmap(0x7f55056bc000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xea000) = 0x7f55056bc000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0e1000
6084 mmap(NULL, 3517816, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5505077000
6084 mmap(0x7f55053c7000, 40960, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x150000) = 0x7f55053c7000
6084 mmap(0x7f55053d1000, 3448, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f55053d1000
6084 mmap(NULL, 3142544, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5504d77000
6084 mmap(0x7f5505058000, 40960, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe1000) = 0x7f5505058000
6084 mmap(0x7f5505062000, 82832, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5505062000
6084 mmap(NULL, 3125544, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5504a7b000
6084 mmap(0x7f5504d75000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xfa000) = 0x7f5504d75000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0e0000
6084 mmap(NULL, 2184216, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5504865000
6084 mmap(0x7f5504a79000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14000) = 0x7f5504a79000
6084 mmap(NULL, 2212904, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5504648000
6084 mmap(0x7f550485f000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7f550485f000
6084 mmap(0x7f5504861000, 13352, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5504861000
6084 mmap(NULL, 3925208, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5504289000
6084 mmap(0x7f550463d000, 24576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b4000) = 0x7f550463d000
6084 mmap(0x7f5504643000, 17624, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5504643000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0df000
6084 mmap(NULL, 8392040, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5503a88000
6084 mmap(0x7f5504287000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3ff000) = 0x7f5504287000
6084 mmap(NULL, 2196528, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f550386f000
6084 mmap(0x7f5503a85000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16000) = 0x7f5503a85000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0de000
6084 mmap(NULL, 2708032, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55035d9000
6084 mmap(0x7f5503867000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8e000) = 0x7f5503867000
6084 mmap(NULL, 2408864, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f550338c000
6084 mmap(0x7f55035d7000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4b000) = 0x7f55035d7000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0dd000
6084 mmap(NULL, 8388656, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5502b8b000
6084 mmap(0x7f550338a000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3ff000) = 0x7f550338a000
6084 mmap(NULL, 2518464, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5502924000
6084 mmap(0x7f5502b82000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5e000) = 0x7f5502b82000
6084 mmap(0x7f5502b8a000, 3520, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5502b8a000
6084 mmap(NULL, 2162064, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5502714000
6084 mmap(0x7f5502922000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe000) = 0x7f5502922000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5502713000
6084 mmap(NULL, 4454088, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55022d3000
6084 mmap(0x7f5502701000, 69632, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22e000) = 0x7f5502701000
6084 mmap(0x7f5502712000, 1736, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5502712000
6084 mmap(NULL, 2249496, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55020ad000
6084 mmap(0x7f55022be000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0x7f55022be000
6084 mmap(0x7f55022c0000, 74520, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f55022c0000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f55020ac000
6084 mmap(NULL, 2232416, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5501e8a000
6084 mmap(0x7f55020aa000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x20000) = 0x7f55020aa000
6084 mmap(NULL, 2113944, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5501c85000
6084 mmap(0x7f5501e88000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f5501e88000
6084 mmap(NULL, 2128984, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5501a7d000
6084 mmap(0x7f5501c83000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f5501c83000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0dc000
6084 mmap(NULL, 2109704, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5501879000
6084 mmap(0x7f5501a7b000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f5501a7b000
6084 mmap(NULL, 2366184, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5501637000
6084 mmap(0x7f5501870000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x39000) = 0x7f5501870000
6084 mmap(0x7f5501878000, 2792, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5501878000
6084 mmap(NULL, 3578368, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55012cd000
6084 mmap(0x7f5501622000, 69632, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x155000) = 0x7f5501622000
6084 mmap(0x7f5501633000, 14848, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5501633000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0db000
6084 mmap(NULL, 3964496, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5500f05000
6084 mmap(0x7f55012bf000, 57344, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1ba000) = 0x7f55012bf000
6084 mmap(NULL, 2187824, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5500cee000
6084 mmap(0x7f5500f03000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7f5500f03000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0da000
6084 mmap(NULL, 2469936, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5500a92000
6084 mmap(0x7f5500ce4000, 36864, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x52000) = 0x7f5500ce4000
6084 mmap(0x7f5500ced000, 48, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5500ced000
6084 mmap(NULL, 2134448, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f5500888000
6084 mmap(0x7f5500a90000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0x7f5500a90000
6084 mmap(NULL, 2205832, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f550066d000
6084 mmap(0x7f5500886000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19000) = 0x7f5500886000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d9000
6084 mmap(NULL, 2864104, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f55003b1000
6084 mmap(0x7f5500665000, 28672, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xb4000) = 0x7f5500665000
6084 mmap(0x7f550066c000, 1000, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f550066c000
6084 mmap(NULL, 2255936, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f550018a000
6084 mmap(0x7f55003ac000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7f55003ac000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5500189000
6084 mmap(NULL, 20377632, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fee19000
6084 mmap(0x7f5500187000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x116e000) = 0x7f5500187000
6084 mmap(NULL, 3963320, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fea51000
6084 mmap(0x7f54fedef000, 155648, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19e000) = 0x7f54fedef000
6084 mmap(0x7f54fee15000, 14776, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f54fee15000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f54fea50000
6084 mmap(NULL, 2612480, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fe7d2000
6084 mmap(0x7f54fea4c000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7a000) = 0x7f54fea4c000
6084 mmap(NULL, 2302408, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fe59f000
6084 mmap(0x7f54fe7d0000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x31000) = 0x7f54fe7d0000
6084 mmap(NULL, 2125992, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fe397000
6084 mmap(0x7f54fe59d000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f54fe59d000
6084 mmap(NULL, 2348544, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fe159000
6084 mmap(0x7f54fe394000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3b000) = 0x7f54fe394000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d8000
6084 mmap(NULL, 2163496, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fdf48000
6084 mmap(0x7f54fe157000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0x7f54fe157000
6084 mmap(NULL, 2168048, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fdd36000
6084 mmap(0x7f54fdf46000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10000) = 0x7f54fdf46000
6084 mmap(NULL, 2109528, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fdb32000
6084 mmap(0x7f54fdd34000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f54fdd34000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d7000
6084 mmap(NULL, 2940512, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fd864000
6084 mmap(0x7f54fdb27000, 45056, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc3000) = 0x7f54fdb27000
6084 mmap(NULL, 2256944, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fd63c000
6084 mmap(0x7f54fd861000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x25000) = 0x7f54fd861000
6084 mmap(0x7f54fd863000, 48, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f54fd863000
6084 mmap(NULL, 2109864, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fd438000
6084 mmap(0x7f54fd63a000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f54fd63a000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d6000
6084 mmap(NULL, 2126576, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fd230000
6084 mmap(0x7f54fd436000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f54fd436000
6084 mmap(NULL, 2109536, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fd02c000
6084 mmap(0x7f54fd22e000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f54fd22e000
6084 mmap(NULL, 2210424, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f54fce10000
6084 mmap(0x7f54fd028000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f54fd028000
6084 mmap(0x7f54fd02a000, 6776, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f54fd02a000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d5000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d4000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d3000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d2000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0d1000
6084 mmap(NULL, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0cf000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0ce000
6084 mmap(NULL, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f550a0cc000
6084 munmap(0x7f550604a000, 46777) = 0
6084 mmap(NULL, 139264, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f550a0aa000
6084 mmap(0x7f550a0ab000, 131072, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f550a0ab000
6084 mmap(NULL, 139264, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f550a088000
6084 mmap(0x7f550a089000, 131072, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f550a089000
6084 mmap(NULL, 139264, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f550a066000
6084 mmap(0x7f550a067000, 131072, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f550a067000
6084 mmap(NULL, 548864, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f5509fe0000
6084 mmap(0x7f5509fe1000, 540672, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5509fe1000
6084 mmap(NULL, 40960, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f5509fd6000
6084 mmap(0x7f5509fd7000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5509fd7000
6084 mmap(NULL, 139264, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f5509fb4000
6084 mmap(0x7f5509fb5000, 131072, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5509fb5000
6084 mmap(NULL, 4198400, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f54fca0f000
6084 mmap(0x7f54fcc00000, 2097152, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|0x40000, -1, 0) = 0x7f54fcc00000
6084 munmap(0x7f54fca0f000, 2031616) = 0
6084 munmap(0x7f54fce01000, 61440) = 0
6084 mmap(NULL, 40960, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f5509faa000
6084 mmap(0x7f5509fab000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5509fab000
6084 mmap(NULL, 24576, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f5509fa4000
6084 mmap(0x7f5509fa5000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5509fa5000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5509fa3000
6084 munmap(0x7f5509fa3000, 4096) = 0
6084 mmap(NULL, 2919792, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7f54fc936000
6084 mmap(NULL, 26258, PROT_READ, MAP_SHARED, 4, 0) = 0x7f5509f9d000
6084 mmap(NULL, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5509f9c000
6084 munmap(0x7f5509f9c000, 4096) = 0
6084 mlockall(MCL_CURRENT|MCL_FUTURE

This task is unkillable. Two other tasks are stuck spinning.

Note the line with 0x40000, which is MAP_HUGETLB. Could that be the problem?

--Andy


\
 
 \ /
  Last update: 2012-12-22 03:41    [W:0.153 / U:1.348 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site