LO75910: SERVER DEADLOCK

APAR status

• Closed as fixed if next.

Error description

• The server thread server, pid=4850298, tid=19398839, ptid=17477)
  is holding the
  latch that mtc thread is waiting for, and the mtc thread has the
  SIX lock which
  the server is waiting for.
  
  These two threads are causing the deadlock:
  
  ###################################
  ###### thread 1/2 :: mtc, pid=2162818, tid=45809819, ptid=1)
  ######
  ###################################
  [1] 0x0900000000133eac  __fd_select(??, ??, ??, ??, ??) + 0xcc
  
  [2] 0x090000000147ec70  select(0x0, 0x0, 0x0, 0x0,
  0xfffffffffff9dd0) + 0x28
  [3] 0x090000000147ec04  unix_usleep(0x456d7000456d70) + 0x6c
  [4] 0x090000000131f234  OSDelayThread(0x11c6000011c6) + 0x48
  [5] 0x0900000001738ad4  UBMDelayThreadDebug(0xfffffffffffa080,
  
  0x9000000034f8e84, 0x50e0000050e) + 0x100
  [6] 0x0900000001733bd8  UBMAcquireGroup(0x2800851f00000092,
  0xfffffffffffa158,
  0xfffffffffffa144) + 0x1d4
  [7] 0x090000000173ad40
  UBMAutoIngestGroupPage(0xfffffffffffa760,
  0xf1a00000f1a, 0x200000002, 0x0, 0x0, 0xfffffffffffa2b0) + 0x248
  
  [8] 0x090000000173ce58  UBMClock(0xfffffffffffa760,
  0xf1a00000f1a,
  0x200000002, 0x0) + 0xa8
  [9] 0x090000000173f0b8  UBMPinExtended(0xfffffffffffa760, 0x0,
  
  0xfffffffffffa960) + 0x17ac
  [10] 0x0900000001740714  UBMPinA_Extended(0x2800851f00000092,
  0x0,
  0x200000002000, 0x0, 0x0, 0x0, 0x0, 0x0) + 0x90
  [11] 0x09000000015a3434  DbBucketPinBufferExt(0xfffffffffffd680,
  
  0x1000000000001, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffacb8) +
  0x7ac
  [12] 0x09000000015a38b4  DbBucketPinBuffer(0xfffffffffffd680,
  0x1000000000001,
  0x0, 0x0, 0x0, 0x0, 0xfffffffffffacb8, 0xfffffffffffa  9e8) +
  0x5c
  [13] 0x0900000001593280  GetBucketAndSlot(0xfffffffffffd680,
  0xfffffffffffae38, 0x0, 0x0, 0xfffffffffffab50,
  0xfffffffffffacb0,
  0xfffffffffffab48, 0xfffffffffffacb8) + 0x1a4
  [14] 0x090000000159c908  DbBktPinSlotExtended(0xfffffffffffd680,
  
  0xfffffffffffae38, 0x0, 0x0, 0xfffffffffffacb0,
  0xfffffffffffacb8, 0x0) +
  0x258
  [15] 0x090000000159cbe0  DbBktPinSlot(0xfffffffffffd680,
  0xfffffffffffae38,
  0x0, 0x0, 0xfffffffffffacb0, 0xfffffffffffacb8) + 0x28
  [16] 0x0900000001bfc73c  NoteHeaderByBSIDExt(0xfffffffffffd680,
  
  0xfffffffffffae38, 0xfffffffffffaf38, 0x0) + 0x4e4
  [17] 0x0900000001bfd108  NoteHeader(0xfffffffffffd680,
  0xfffffffffffd3e8,
  0xfffffffffffaf38, 0x0) + 0x2c0
  [18] 0x09000000016b86ec  GetSpecialNoteImpl(0xfffffffffffd680,
  
  0x4000000008010, 0xfffffffffffd3e8, 0x0, 0x0) + 0x804
  [19] 0x0900000001bfd2f8  NoteHeader(0xfffffffffffd680,
  0xfffffffffffd3e8,
  0xfffffffffffc098, 0xfffffffffffb5a0) + 0x4b0
  [20] 0x0900000001585828
  GetNoteHeaderAndLength(0xfffffffffffd680,
  0xfffffffffffd3e8, 0xfffffffffffc098, 0xfffffffffffbc10,
  0xffffff fffffb9fc) +
  0x2ec
  [21] 0x09000000015854a8
  GetNoteHeaderAndLengthExt(0xfffffffffffd680,
  0xfffffffffffd3e8, 0xfffffffffffc098, 0xfffffffffffbc10,
  0xfffffffffffb9fc,
  0x0, 0x0, 0x0) + 0x2d8
  [22] 0x090000000221cc88  NoteOpenExtendedImpl(0xfffffffffffd680,
  0x126ffff0010,
  0x300000003000000, 0x0, 0x0, 0x0, 0xfffffffffffd984,   0x0) +
  0xa94
  [23] 0x0900000002224254  NoteOpenExtended(0xfffffffffffd680,
  0xffff0010ffff0010, 0x300000003000000, 0x0, 0x0, 0x0,
  0xfffffffffffd984) +
  0x248
  [24] 0x09000000017b7e3c
  iNSFNoteOpenExtended3(0xfffffffffffd680,
  0xffff0010ffff0010, 0x0, 0x0, 0x300000003000000, 0x0, 0x0, 0x0)
  +  0x1c0
  [25] 0x09000000016abaf0  NSFNoteOpenExtended3(0x9ac000009ac,
  0xffff0010ffff0010, 0x0, 0x0, 0x300000003000000, 0x0, 0x0, 0x0)
  +  0x3dc
  [26] 0x09000000016ac3f0  NSFNoteOpenExtended2(0x9ac000009ac,
  0xffff0010ffff0010, 0x300000003000000, 0x0, 0x0, 0x0,
  0xfffffffffffd984) + 0x74
  Page 44 of 49
  [27] 0x09000000016ac488  NSFNoteOpenExtended(0x9ac000009ac,
  0xffff0010ffff0010, 0x300000003000000, 0x0, 0x0,
  0xfffffffffffd984) +  0x  54
  [28] 0x09000000016ad1f0  NSFNoteOpenExt(0x9ac000009ac,
  0xffff0010ffff0010,
  0x300000003000000, 0xfffffffffffd984) + 0x84
  [29] 0x0900000001bafae8  NSFDbCompactInPlace_h(0x9ac000009ac,
  
  0x40000000000000, 0x0, 0x0, 0xfffffffffffecb0, 0x0) + 0x474
  [30] 0x0900000001bc0018  NSFDbCompactInPlace(0x9ac000009ac, 0x0,
  0x0,  0x0,
  0xfffffffffffecb0, 0x0) + 0x90
  [31] 0x09000000021f56a8  DbCompactExtended(0x1100016b0, 0x0,
  0x0, 0x0,
  0xfffffffffffecb0, 0x0) + 0x19b0
  [32] 0x09000000021f8350  NSFDbCompact(0x1100016b0, 0x0,
  0xfffffffffffecb0) +
  0x90
  [33] 0x000000010001d450  MTStore::Compact(const
  char*,int,unsigned int,unsigned
  int)(0x1100016b0, 0x0, 0x500000005, 0x3e8000003e8) +   0x94
  [34] 0x0000000100017010  CompactStore()() + 0x7c
  [35] 0x0000000100016780  DoDailyTasks()() + 0xc
  [36] 0x0000000100014348  AddInMain(0x2000000020, 0x100000001,
  0x11001c958) +
  0x458
  [37] 0x0000000100026440  NotesMain(0x100000001, 0x11001c958) +
  0x58
  [38] 0x0000000100026194  notes_main(0x0, 0x0, 0x0, 0x100000001,
  0x11001c958) +
  0xfc
  [39] 0x0000000100000290  __start() + 0x98
  
  
  
  
  ###################################
  ###### thread 229/233 :: server, pid=4850298, tid=19398839,
  ptid=17477)
  ######
  ###################################
  [1] 0x09000000004ea370  _cond_wait_global(??, ??, ??) + 0x4f0
  
  [2] 0x09000000004eaef8  _cond_wait(??, ??, ??) + 0x38
  [3] 0x09000000004ebbe8  pthread_cond_wait(??, ??) + 0x1a8
  [4] 0x09000000013038c8  WaitForThreadSem(0x3b3000003b3,
  0xffffffffffffffff) +
  0x110
  [5] 0x090000000130aeb4  WaitOnNativeSemaphore(0x3b30000000003b3,
  
  0x700000063621e36, 0x0, 0x0) + 0x118
  [6] 0x090000000130456c  OSLockWriteFRWSemInt(0x700000063621e34,
  0x100000001,
  0x0) + 0x1ec
  [7] 0x0900000001308a0c  OSLockWriteFRWSem(0x700000063621e34) +
  0x18
  [8] 0x0900000001309c30  OSWaitFairEvent(0x700000063621e30, 0x0)
  + 0x1c
  [9] 0x090000000153cee8
  newLkLock(DBCONTEXT_STRUCT*,LK_ID_STRUCT*,unsigned
  int,unsigned int,LK_INFO*,char*)(0x1219a9a08, 0x1219a9610,
  0x402200004022,
  0xffffffffffffffff, 0x1219a95f8, 0x9000000034aec10) + 0x1a8c
  [10] 0x090000000153b07c  _LkLock(0x1219a9a08, 0x1219a9610,
  0x402200004022,
  0xffffffffffffffff, 0x1219a95f8, 0x9000000034aec10) +  0x2b0
  [11] 0x090000000155ac00  LockDbReadSemCtxTimedInt(0x1219a9a08,
  
  0xffffffffffffffff, 0x9000000034aec10) + 0x978
  [12] 0x0900000001557250  LockDbROCondInt(0x1219a9a08,
  0x104000000000104,
  0x100000001, 0x9000000034aec10) + 0x36c
  [13] 0x090000000159f6a8  BucketWrite(0x100000001,
  0x2800851f00000092,
  0x325b7000325b7, 0x1000000010000, 0x1219a9c68,
  0x70000001041c038,
  0x70000001041c040, 0x70000001a1c0000) + 0x880
  [14] 0x09000000015a3e14  SUMBUCKETWritePage(0x2800851f00000092,
  
  0x325b7000325b7, 0x1000000010000, 0x1219a9c68,
  0x70000001041c038,
  0x70000001041c040, 0x70000001a1c0000, 0x0) + 0x70
  [15] 0x0900000001736438
  UBMFlushGroupExtended(0x2800851f00000092, 0x0,
  0x100000001, 0x70000000bf1f030, 0x9000000036242d8,
  0x900000003499180) + 0x6c4
  [16] 0x0900000001b188d0  DbFlushExtended2(0x1219aa138,
  0x400000004,
  0x100000001, 0x900000003499180, 0x0) + 0x1d38
  [17] 0x09000000030bb1b8  _RmLogFlushThread(0x0) + 0x750
  [18] 0x09000000030bc00c  RmFlushThreadWrapper() + 0x64
  [19] 0x00000001000b497c  RmFlushTask(0x1014afc00000000,
  0x3efc800000000) +
  0xa0
  [20] 0x00000001000c7720  Scheduler(0x0) + 0x2e0
  [21] 0x090000000131b750  ThreadWrapper(0x0) + 0x118
  [22] 0x09000000004c9c90  _pthread_body(??) + 0xf0
  

Local fix

Problem summary

• This APAR is closed as FIN. We have deferred the fix to a
   future release.
  

Problem conclusion

Temporary fix

Comments

• This APAR is associated with SPR# SDSS97VRHH.
  This APAR is closed as FIN. We have deferred the fix to a
   future release.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels

• R853 PSN

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