iis频繁奔溃，求大神帮忙分析dump

直接上图了

上图三个错误最近频繁出现，出现一次iis就奔溃一次，抓取的dump分析后如下：

Couldn't resolve error at 'ls'
:> !analyze -v
*******************************************************************************
*                                                                             *
*                        Exception Analysis                                   *
*                                                                             *
*******************************************************************************

GetUrlPageData2 (WinHttp) failed: .

DUMP_CLASS: 

DUMP_QUALIFIER: 

CONTEXT:  (.ecxr)
rax=736f686c61636f6c rbx=000001ac72f5c580 rcx=000001ac72f5c580
rdx=736f686c61636f6c rsi= rdi=
rip=00007ffd0e0d1744 rsp=0000005a9667d6a0 rbp=000001ac72f5c580
 r8=000001ac72f5c580  r9=000001ac6666cd50 r10=00000fffa0b9f15a
r11= r12=000001a7513e5ab0 r13=000001ac72f5c580
r14= r15=000001ac6666cd50
iopl=         nv up ei pl zr na po cy
cs=  ss=002b  ds=002b  es=002b  fs=  gs=002b             efl=
loghttp!RequestDoWork+0x84:
00007ffd`0e0d1744 488b08          mov     rcx,qword ptr [rax] ds:736f686c`61636f6c=????????????????
Resetting default scope

FAULTING_IP:
loghttp!RequestDoWork+
00007ffd`0e0d1744 488b08          mov     rcx,qword ptr [rax]

EXCEPTION_RECORD:  (.exr -)
ExceptionAddress: 00007ffd0e0d1744 (loghttp!RequestDoWork+0x0000000000000084)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags:
NumberParameters:
   Parameter[]:
   Parameter[]: ffffffffffffffff
Attempt to read from address ffffffffffffffff

PROCESS_NAME:  w3wp.exe

ERROR_CODE: (NTSTATUS) 0xc0000005 - <Unable to get error code text>

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - <Unable to get error code text>

EXCEPTION_CODE_STR:  c0000005

EXCEPTION_PARAMETER1:  

EXCEPTION_PARAMETER2:  ffffffffffffffff

FOLLOWUP_IP:
loghttp!RequestDoWork+
00007ffd`0e0d1744 488b08          mov     rcx,qword ptr [rax]

READ_ADDRESS:  ffffffffffffffff 

WATSON_BKT_PROCSTAMP:  57899b8a

WATSON_BKT_PROCVER:  10.0.14393.0

PROCESS_VER_PRODUCT:  Internet Information Services

WATSON_BKT_MODULE:  loghttp.dll

WATSON_BKT_MODSTAMP:  57899b80

WATSON_BKT_MODOFFSET:  

WATSON_BKT_MODVER:  10.0.14393.0

MODULE_VER_PRODUCT:  Internet Information Services

BUILD_VERSION_STRING:  10.0.14393.2214 (rs1_release_1.-)

MODLIST_WITH_TSCHKSUM_HASH:  a0ec544a1ec8d5dfa0a915fcd0de4fe39c075455

MODLIST_SHA1_HASH:  8789da5e655c37daf1ea0c1b0559023ff06eb1fc

NTGLOBALFLAG:  

PROCESS_BAM_CURRENT_THROTTLED: 

PROCESS_BAM_PREVIOUS_THROTTLED: 

APPLICATION_VERIFIER_FLAGS:  

PRODUCT_TYPE:  

SUITE_MASK:  

DUMP_FLAGS:  8000c07

DUMP_TYPE:  

MISSING_CLR_SYMBOL: 

ANALYSIS_SESSION_HOST:  DESKTOP-UO1I8RL

ANALYSIS_SESSION_TIME:  -- ::13.0800

ANALYSIS_VERSION: 10.0.15063.468 amd64fre

MANAGED_CODE: 

MANAGED_ENGINE_MODULE:  clr

MANAGED_ANALYSIS_PROVIDER:  SOS

MANAGED_THREAD_ID: f94

THREAD_ATTRIBUTES:
ADDITIONAL_DEBUG_TEXT:  SOS.DLL is not loaded for managed code. Analysis might be incomplete

OS_LOCALE:  CHS

PROBLEM_CLASSES: 

    ID:     [0n292]
    Type:   [@ACCESS_VIOLATION]
    Class:  Addendum
    Scope:  BUCKET_ID
    Name:   Omit
    Data:   Omit
    PID:    [Unspecified]
    TID:    [0xf94]
    Frame:  [] : loghttp!RequestDoWork

    ID:     [0n264]
    Type:   [INVALID_POINTER_READ]
    Class:  Primary
    Scope:  DEFAULT_BUCKET_ID (Failure Bucket ID prefix)
            BUCKET_ID
    Name:   Add
    Data:   Omit
    PID:    [Unspecified]
    TID:    [0xf94]
    Frame:  [] : loghttp!RequestDoWork

    ID:     [0n234]
    Type:   [NOSOS]
    Class:  Addendum
    Scope:  DEFAULT_BUCKET_ID (Failure Bucket ID prefix)
            BUCKET_ID
    Name:   Add
    Data:   Omit
    PID:    [Unspecified]
    TID:    [Unspecified]
    Frame:  []

BUGCHECK_STR:  APPLICATION_FAULT_INVALID_POINTER_READ_NOSOS

DEFAULT_BUCKET_ID:  INVALID_POINTER_READ_NOSOS

PRIMARY_PROBLEM_CLASS:  APPLICATION_FAULT

LAST_CONTROL_TRANSFER:  from 00007ffd0e0d16ad to 00007ffd0e0d1744

STACK_TEXT:
0000005a`9667d6a0 00007ffd`0e0d16ad : 000001ac`72f5c580 ` ` ` : loghttp!RequestDoWork+0x84
0000005a`9667d8a0 00007ffd`05ced3d9 : ` ` 000001ac`72f5c580 000001ac`6666ccc8 : loghttp!CIISHttpModule::OnSendResponse+0x1d
0000005a`9667d8e0 00007ffd`05cecd7c : 000001ac`6666ccc8 0000005a`9667d9f1 ` 000001ac`6666cd50 : iiscore!NOTIFICATION_CONTEXT::RequestDoWork+0xb9
0000005a`9667d930 00007ffd`05cecbc6 : 000001a7`51ac36b0 ` 000001ac`6666ccc8 ` : iiscore!NOTIFICATION_CONTEXT::CallModulesInternal+0x19c
0000005a`9667da40 00007ffd`05cf1147 : 0000005a`9667dac0 ` 000001ac`72f5c580 00007ffc`c2fbaef6 : iiscore!NOTIFICATION_CONTEXT::CallModules+0x36
0000005a`9667daa0 00007ffd`05cefd4c : ` 00007ffd`05cf15e0 ` ` : iiscore!NOTIFICATION_SEND_RESPONSE::DoWork+0x87
0000005a`9667db20 00007ffd`05cedca2 : 000001aa` ` ` 000001ac`72f5c580 : iiscore!W3_RESPONSE::Flush+0x39c
0000005a`9667dbb0 00007ffd`05ce7956 : 00007ffd`05ce7880 000001a9`9346f610 000001ac`6666bc08 000001a7`51ac36b0 : iiscore!NOTIFICATION_MAIN::DoWork+0x272
0000005a`9667ded0 00007ffd`1fcdfb01 : 000001ac`72f5c580 00007ffd`05ce7880 0000005a`9667e060 00007ffd`22574cd5 : iiscore!W3_CONTEXT_BASE::IndicateCompletion+0xd6
0000005a`9667df50 00007ffd`1fce25e2 : 0000005a`9667e1b0 0000005a`9667e1b0 0000005a`9667e178 00007ffc`c5413be5 : webengine4!W3_MGD_HANDLER::IndicateCompletion+0x5d
0000005a`9667df80 00007ffc`c542240e : 000001a9`9346e970 0000005a`9667e050 0000005a`9667dfa0 00006dc0`f7918fa1 : webengine4!MgdIndicateCompletion+0x22
0000005a`9667dfb0 00007ffc`c5411a14 : 000001aa`1208fc40 000001a9`9346e698 0000005a`9667e180 0000005a`9667e138 : 0x00007ffc`c542240e
0000005a`9667e070 00007ffc`c54107f3 : ffffffff`fffffffe 000001ac`6666b7f0 ffffffff`fffffffe ` : 0x00007ffc`c5411a14
0000005a`9667e210 00007ffc`c540f5e2 : ` 000001ac`66364ee0 ffffffff`fffffffe 0000005a` : 0x00007ffc`c54107f3
0000005a`9667e250 00007ffd` : ffffffff`ffffffff 00007ffd` 000001a7` 00007ffd`2257a528 : 0x00007ffc`c540f5e2
0000005a`9667e2c0 00007ffd`2263cfba : `0045004e 00007ffd`22575b35 ffffffff`fffffffe 00007ffd`2257a270 : clr!UM2MThunk_WrapperHelper+0x43
0000005a`9667e300 00007ffd`2257a9c8 : 0000005a`9667e428 ` 000001ac`66364ee0 00007ffd`225766af : clr!UM2MThunk_Wrapper+0x60
0000005a`9667e350 00007ffd`2263d065 : 0000005a`9667e501 0000005a` 0000373d`d1759c7a 0000005a`9667e560 : clr!Thread::DoADCallBack+0x13d
0000005a`9667e510 00007ffd`2257241d : 000001ac`6007b8a0 ffffffff`ffffffff ` ` : clr!UM2MDoADCallBack+0xb3
0000005a`9667e590 00007ffd`1fc8184f : 000001a7`51f618c0 000001ac`6666b7f0 ` ` : clr!UMThunkStub+0x26d
0000005a`9667e620 00007ffd`1fc817a2 : 0000005a` 000001ac`6666b7f0 00007ffd`22eb4410 0000005a`9667e800 : webengine4!W3_MGD_HANDLER::ProcessNotification+0x8e
0000005a`9667e650 00007ffd`225799e7 : 000001ac`6666b7f0 00007ffd`1fc81760 00007ffd`22eb4410 ` : webengine4!ProcessNotificationCallback+0x42
0000005a`9667e680 00007ffd`2257819c : 00007ffd`22579a70 0000005a`9667e700 0000005a`9667e801 `0b089504 : clr!UnManagedPerAppDomainTPCount::DispatchWorkItem+0x1bc
0000005a`9667e720 00007ffd`22577f45 : 0007000e` ` 000001ac`66364ee0 000001ac`66364ee0 : clr!ThreadpoolMgr::ExecuteWorkRequest+0x64
0000005a`9667e750 00007ffd`22622e8f : ` 000001a7`50c10e01 ` ` : clr!ThreadpoolMgr::WorkerThreadStart+0xf5
0000005a`9667e7f0 00007ffd`2fdb8364 : ` ` ` ` : clr!Thread::intermediateThreadProc+0x86
0000005a`9667f7b0 00007ffd`31ede851 : ` ` ` ` : kernel32!BaseThreadInitThunk+0x14
0000005a`9667f7e0 ` : ` ` ` ` : ntdll!RtlUserThreadStart+0x21

THREAD_SHA1_HASH_MOD_FUNC:  48176150c99086579b8115dc211b995cc4b07226

THREAD_SHA1_HASH_MOD_FUNC_OFFSET:  1d00c3832e4d0c79a48c8f97b4ed56fa80edffda

THREAD_SHA1_HASH_MOD:  5921a8f24cf922df9ee28e5c41febefcb341d312

FAULT_INSTR_CODE:  48088b48

SYMBOL_STACK_INDEX:  

SYMBOL_NAME:  loghttp!RequestDoWork+

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: loghttp

IMAGE_NAME:  loghttp.dll

DEBUG_FLR_IMAGE_TIMESTAMP:  57899b80

STACK_COMMAND:  .ecxr ; kb

FAILURE_BUCKET_ID:  INVALID_POINTER_READ_NOSOS_c0000005_loghttp.dll!RequestDoWork

BUCKET_ID:  APPLICATION_FAULT_INVALID_POINTER_READ_NOSOS_loghttp!RequestDoWork+

FAILURE_EXCEPTION_CODE:  c0000005

FAILURE_IMAGE_NAME:  loghttp.dll

BUCKET_ID_IMAGE_STR:  loghttp.dll

FAILURE_MODULE_NAME:  loghttp

BUCKET_ID_MODULE_STR:  loghttp

FAILURE_FUNCTION_NAME:  RequestDoWork

BUCKET_ID_FUNCTION_STR:  RequestDoWork

BUCKET_ID_OFFSET:  

BUCKET_ID_MODTIMEDATESTAMP:  57899b80

BUCKET_ID_MODCHECKSUM:  134fa

BUCKET_ID_MODVER_STR:  10.0.14393.0

BUCKET_ID_PREFIX_STR:  APPLICATION_FAULT_INVALID_POINTER_READ_NOSOS_

FAILURE_PROBLEM_CLASS:  APPLICATION_FAULT

FAILURE_SYMBOL_NAME:  loghttp.dll!RequestDoWork

WATSON_STAGEONE_URL:  http://watson.microsoft.com/StageOne/w3wp.exe/10.0.14393.0/57899b8a/loghttp.dll/10.0.14393.0/57899b80/c0000005/00001744.htm?Retriage=1

TARGET_TIME:  --19T04::.000Z

OSBUILD:  

OSSERVICEPACK:  

SERVICEPACK_NUMBER: 

OS_REVISION: 

OSPLATFORM_TYPE:  x64

OSNAME:  Windows 

OSEDITION:  Windows  Server TerminalServer DataCenter SingleUserTS

USER_LCID:  

OSBUILD_TIMESTAMP:  -- ::

BUILDDATESTAMP_STR:  -

BUILDLAB_STR:  rs1_release_1

BUILDOSVER_STR:  10.0.14393.2214

ANALYSIS_SESSION_ELAPSED_TIME:  61eb

ANALYSIS_SOURCE:  UM

FAILURE_ID_HASH_STRING:  um:invalid_pointer_read_nosos_c0000005_loghttp.dll!requestdowork

FAILURE_ID_HASH:  {7fc5e7af--9c33-c2b7-8a9e10458ef1}

Followup:     MachineOwner
---------

跪求大神分析此次iis频繁奔溃的原因。