[1881269.768752] Call Trace:
[1881269.768754]  [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c
[1881269.768757]  [<ffffffff805b608c>] mutex_lock_nested+0x12a/0x201
[1881269.768759]  [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c
[1881269.768761]  [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c
[1881269.768764]  [<ffffffff80286e62>] shrink_slab+0xe2/0x15a
[1881269.768766]  [<ffffffff8028715b>] do_try_to_free_pages+0x281/0x3a9
[1881269.768769]  [<ffffffff80287362>] try_to_free_pages+0x5a/0x5f
[1881269.768772]  [<ffffffff80285240>] isolate_pages_global+0x0/0x231
[1881269.768774]  [<ffffffff80282087>] __alloc_pages_internal+0x26f/0x3c4
[1881269.768777]  [<ffffffff8028106c>] __get_free_pages+0xe/0x4e
[1881269.768780]  [<ffffffff80237a56>] copy_process+0xc0/0x115d
[1881269.768782]  [<ffffffff80238c6f>] do_fork+0x102/0x283
[1881269.768784]  [<ffffffff80257376>] __lock_acquire+0x788/0x7f3
[1881269.768787]  [<ffffffff805b795d>] error_exit+0x0/0x9a
[1881269.768790]  [<ffffffff805b7141>] lockdep_sys_exit_thunk+0x35/0x67
[1881269.768792]  [<ffffffff8020bd2b>] system_call_fastpath+0x16/0x1b
[1881269.768795]  [<ffffffff8020c0e7>] ptregscall_common+0x67/0xb0
[1881269.768797] 2 locks held by gmond/9319:
[1881269.768798]  #0:  (shrinker_rwsem){....}, at: [<ffffffff80286db6>] shrink_slab+0x36/0x15a
[1881269.768802]  #1:  (iprune_mutex){....}, at: [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c
[1881269.768829] INFO: task fits2csv:14787 blocked for more than 120 seconds.
[1881269.768831] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[1881269.768833] fits2csv      D ffff88012e657b40     0 14787      1
[1881269.768836]  ffff88008c921ba8 0000000000000046 ffffffff80aa5520 ffff88004d24d290
[1881269.768839]  ffff88004d24cbf0 ffff8801db1a1e60 ffff88004d24cf40 0000000100000000
[1881269.768842]  ffff88004d24cbf0 0000000000000046 ffffffff807aff00 0000000000000246
[1881269.768845] Call Trace:
[1881269.768847]  [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c
[1881269.768849]  [<ffffffff805b608c>] mutex_lock_nested+0x12a/0x201
[1881269.768852]  [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c
[1881269.768854]  [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c
[1881269.768857]  [<ffffffff80286e62>] shrink_slab+0xe2/0x15a
[1881269.768859]  [<ffffffff8028715b>] do_try_to_free_pages+0x281/0x3a9
[1881269.768862]  [<ffffffff80287362>] try_to_free_pages+0x5a/0x5f
[1881269.768864]  [<ffffffff80285240>] isolate_pages_global+0x0/0x231
[1881269.768867]  [<ffffffff80282087>] __alloc_pages_internal+0x26f/0x3c4
[1881269.768869]  [<ffffffff8028106c>] __get_free_pages+0xe/0x4e
[1881269.768872]  [<ffffffff80237a56>] copy_process+0xc0/0x115d
[1881269.768874]  [<ffffffff80257376>] __lock_acquire+0x788/0x7f3
[1881269.768876]  [<ffffffff80238c6f>] do_fork+0x102/0x283
[1881269.768879]  [<ffffffff802b2025>] do_pipe_flags+0xb8/0x100
[1881269.768881]  [<ffffffff805b7388>] _spin_unlock+0x17/0x20
[1881269.768884]  [<ffffffff802b2025>] do_pipe_flags+0xb8/0x100
[1881269.768886]  [<ffffffff8020bd2b>] system_call_fastpath+0x16/0x1b
[1881269.768888]  [<ffffffff8020c0e7>] ptregscall_common+0x67/0xb0
[1881269.768890] 2 locks held by fits2csv/14787:
[1881269.768891]  #0:  (shrinker_rwsem){....}, at: [<ffffffff80286db6>] shrink_slab+0x36/0x15a
[1881269.768895]  #1:  (iprune_mutex){....}, at: [<ffffffff802bd3c1>] shrink_icache_memory+0x40/0x20c