LO84871: IMAP DEADLOCK CONDITION ON DOCUMENT CACHING

APAR status

• Closed as fixed if next.

Error description

• There is a semaphore deadlock condition on document caching
  Similar to  SPR
  VPRS8GHJXM, but could be related to a different code path to
  held  this.
  Waiter is IMAP -  [nIMAP:  12a4:  19d4] and the writer is also
  IMAP -  [nIMAP:
  12a4:  1be0].
  ############################################################
  ### thread 8/27: [   nIMAP:  12a4:  19d4]
  ### FP=0x6dc075a8, PC=0x77c2135a, SP=0x6dc075a8
  ### stkbase=0x6dc10000, total stksize=4194304, used
  stksize=35416
  ############################################################
   [ 1] 0x77c2135a ntdll.ZwWaitForSingleObject+10
  (7000000,1002d7bc,12bdeee8,12bd0000)
   [ 2] 0x7FEFE1810DC KERNELBASE.WaitForSingleObjectEx+156
  (31b,1,100000000,7dc)
  @[ 3] 0x1005ea73 nnotes.WaitOnNativeSemaphoreCounted+251
  (3,11726e65,6dc07f10,0)
  @[ 4] 0x1005e4e6 nnotes.OSLockWriteFRWSem+302
  (7000000,1176d2bf,958d800,957cb18)
  @[ 5] 0x11b9a3f6 nnotes.DocCacheLock+22
  (6dc08588,11a6bb8c,62af06a8,100f4675)
  @[ 6] 0x1192b000 nnotes.NSFProfileGetField+84
  (1d21a8,1002d0d1,0,1)
   [ 7] 0x001a5590 ExNotesShortCutExtx64.MainEntryPoint+10768
  (1dd402,0,1,b7)
   [ 8] 0x001a6949 ExNotesShortCutExtx64.MainEntryPoint+15817
  (1dd402,905,7000000,7000000)
   [ 9] 0x001a63d9 ExNotesShortCutExtx64.MainEntryPoint+14425
  (14252b48,6dc091a0,2d5,4fa9250)
   [10] 0x001a14e3 ExNotesShortCutExtx64.EMHandlerProc+275
  (6655265746F0091,3e80001,b7,10)
  @[11] 0x100016cd nnotes.EMAfter+521 (40,0,905,1dd402)
  @[12] 0x11787878 nnotes.NSFNoteOpenExtended+1376
  (a,905,6dc0c624,7000000)
  @[13] 0x119ab685 nnotes.NSFNoteOpenByUNIDExtended+401
  (62b319e8,12481448,6dc0d768,0)
  @[14] 0x116f3f36 nnotes.NoteUpdateImpl+36034
  (62b900d8,47,4,6dc0e968)
  @[15] 0x11724572 nnotes.iNoteUpdate2+1050
  (2,1125d937,6dc0ef74,3)
  @[16] 0x1173bc9f nnotes.DispatchNoteUpdate+1915 (66,47,4,10)
  @[17] 0x1173ec5f nnotes.NSFNoteUpdateExtended2+3271
  (905,6dc0f728,100000,1176cec3)
  @[18] 0x11b13f66 nnotes.xNSFNoteUpdateExtended2+174
  (0,905,0,0)
  @[19] 0x1163bdcf nnotes.DbNoteUpdateAndAddToFolders+343
  (0,b31,1a47409,77200ec4)
  @[20] 0x11877b91 nnotes.DbIMAPCopyMessages+4301
  (0,904,27600001,896ace60)
  @[21] 0x11bbb384 nnotes.iNSFDbIMAPCopyMessages+220
  (0,0,62b92e30,11a91349)
  @[22] 0x118558bb nnotes.NSFDbIMAPCopyMessages+655
  (0,12309ced,6dc0fe20,6dc0fd20)
  @[23] 0x004099ae nIMAP.CopyProcess+322
  (FFFFFFF27600001,2600009,0,10039b84)
  @[24] 0x0043538d nIMAP.IMAPThreadProc+829 (0,0,0,0)
  @[25] 0x10036bc6 nnotes.ThreadWrapper+330 (0,0,0,0)
   [26] 0x7786652d kernel32.BaseThreadInitThunk+13 (0,0,0,0)
   [27] 0x77bfc521 ntdll.RtlUserThreadStart+33 (0,0,0,0)
  ############################################################
  ### thread 16/27: [   nIMAP:  12a4:  1be0]
  ### FP=0x413cd838, PC=0x77c2135a, SP=0x413cd838
  ### stkbase=0x413d0000, total stksize=4194304, used
  stksize=10184
  ############################################################
   [ 1] 0x77c2135a ntdll.ZwWaitForSingleObject+10 (0,0,0,0)
   [ 2] 0x7FEFE1810DC KERNELBASE.WaitForSingleObjectEx+156
  (33c,413ce978,0,860)
  @[ 3] 0x1005e9dc nnotes.WaitOnNativeSemaphoreCounted+100
  (0,0,7,77254f88)
  @[ 4] 0x1005e4e6 nnotes.OSLockWriteFRWSem+302
  (129a9524,f18009,118809,413ce2f0)
  @[ 5] 0x1005e3b1 nnotes.OSWaitFairEvent+13
  (0,245c09,0,FFFFFFF00000000)
  @[ 6] 0x11746823 nnotes.newLkLock+12419 (0,0,0,0)
  @[ 7] 0x11743418 nnotes.LkLock+544 (0,413ce4f0,413ce4e0,0)
  @[ 8] 0x117f64af nnotes.LockDbWriteSemCtxTimedInt+1459
  (0,1192d284,c275,413ce640)
  @[ 9] 0x117f4515 nnotes.LockDbWriteSemCtxInt+33
  (413ce4e8,413ce4f4,56C69666F727024,616D693332305F)
  @[10] 0x117f8960 nnotes.LockDbRWInt+724
  (2,1125d937,137871e0,3)
  @[11] 0x1173b69a nnotes.DispatchNoteUpdate+374
  (66,20005997,80000,10)
  @[12] 0x1173d867 nnotes.NSFNoteUpdateExtended3+3363
  (0,FCECDCCCBCAC9C8,7D6E5D400000004,124a3590)
  @[13] 0x1173ca68 nnotes.NSFNoteUpdateExtended+132
  (0,11247ae9,20005997,1002d0d1)
  @[14] 0x1192a7df nnotes.NSFProfileUpdate+531
  (413cf180,117f6acf,4f1c2f0,413cf180)
  @[15] 0x1186f581 nnotes.DbIMAPSubscribeFolder+1405
  (0,0,89689cb0,0)
  @[16] 0x11bbaf3c nnotes.iNSFDbIMAPSubscribeFolder+196
  (111f9ea4,413cf2a8,3e8,11245b32)
  @[17] 0x11853ede nnotes.NSFDbIMAPSubscribeFolder+674
  (413cf350,413cf2e0,413cf2a0,896ae038)
  @[18] 0x0042d1a3 nIMAP.CIMAPCommandSubBase::Process+559
  (89689c28,469330,4643d4,429f72)
  @[19] 0x0042b147 nIMAP.CIMAPProtocol::CommandDispatch+3247
  (25,10057353,4f1c280,1152570b)
  @[20] 0x00429f82 nIMAP.CIMAPProtocol::AuthenticatedCommands+106
  (fa0,6cef2a10,0,115239af)
  @[21] 0x0042c3af nIMAP.CIMAPProtocol::StateAuthenticated+55
  (413cf870,4f1e168,4f1c2a0,4f1c290)
  @[22] 0x00429a51 nIMAP.CIMAPProtocol::Run+585
  (1244fb48,413cfa10,0,1005d134)
  @[23] 0x004521e7 nIMAP.CBaseTask::StateMachine+1779
  (0,1004fa1a,e1d9428,1152570b)
  @[24] 0x00404ec2 nIMAP.CIMAPSrv::OnConnect+98
  (bf8001d,0,e1d9448,100371aa)
  @[25] 0x0044a74b nIMAP.CIServ::ServerTaskProtocolMachine+767
  (482220,f3d2c08,f6,0)
  @[26] 0x00448dab nIMAP.CIServ::ServerTaskIOCP+3179
  (482220,1,0,0)
  @[27] 0x00448123 nIMAP.ServerThread+59 (0,0,0,0)
  @[28] 0x10036bc6 nnotes.ThreadWrapper+330 (0,0,0,0)
   [29] 0x7786652d kernel32.BaseThreadInitThunk+13 (0,0,0,0)
   [30] 0x77bfc521 ntdll.RtlUserThreadStart+33 (0,0,0,0)
  

Local fix

• n
  

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# MMIL9W8GCX.
  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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