************************* hanginfo *************************
  /exports/testreports/51484/testresults/racer-ldiskfs-DNE-centos7_x86_64-centos7_x86_64/oleg256-client-timeout-core (3.10.0-7.9-debug) 
 *** UNINTERRUPTIBLE threads, classified ***

 ==================== Waiting on mutexes ====================
  -- <struct mutex 0xffff88006a6ad180> lustre_inode_cache 
   Owner: pid=20136 cmd=mrename
    ... 2 pids. Youngest,oldest: 20240, 20136  Ran ms ago: 466726, 466946
        sorted by ran_ago, youngest first
      [20240, 20136]
  -- <struct mutex 0xffff8800aed99980> lustre_inode_cache 
   Owner: pid=20240 cmd=mrename
    ... 16 pids. Youngest,oldest: 21823, 20256  Ran ms ago: 461256, 466940
        printing 10 out of 16
        sorted by ran_ago, youngest first
      [21823, 21180, 20517, 20556, 20511, <6 skipped>, 20317, 20311,
       20304, 20286, 20256]
  -- <struct mutex 0xffff8800b6178c78> kmalloc-2048 
   Owner: pid=20136 cmd=mrename
    ... 6 pids. Youngest,oldest: 20530, 20238  Ran ms ago: 466011, 466867
        sorted by ran_ago, youngest first
      [20530, 20242, 20375, 20377, 20356, 20238]

*** Threads that own resources the other threads are waiting on ***

PID=20136  CPU=0 CMD=mrename
  #0   __schedule+0x2e2
  #1   schedule_preempt_disabled+0x39
  #2   __mutex_lock_slowpath+0x13a
  #3   mutex_lock+0x2d
  #4   lock_rename+0xda
  #5   SYSC_renameat2+0x22f
  #6   sys_renameat2+0xe
  #7   sys_rename+0x1e
  #8   system_call_fastpath+0x1f, 477 bytes of data
{20356, 20136, 20238, 20240, 20242, 20530, 20375, 20377}

PID=20240  CPU=3 CMD=mrename
  #0   __schedule+0x2e2
  #1   schedule_preempt_disabled+0x39
  #2   __mutex_lock_slowpath+0x13a
  #3   mutex_lock+0x2d
  #4   vfs_rename+0x41d
  #5   SYSC_renameat2+0x4d3
  #6   sys_renameat2+0xe
  #7   sys_rename+0x1e
  #8   system_call_fastpath+0x1f, 477 bytes of data
{20428, 20556, 20304, 20244, 20311, 20250, 20317, 20511, 20256, 20255, 20517, 20340, 20343, 21180, 20286, 21823}


+++WARNING+++ Possible hang

******************************************************************************
************************ A Summary Of Problems Found *************************
******************************************************************************
-------------------- A list of all +++WARNING+++ messages --------------------
    Possible hang
------------------------------------------------------------------------------

 ** Execution took   1.47s (real)   1.07s (CPU), Child processes:   0.39s