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PORandom w3wp.exe crashes in .net 4
 

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  1. PORandom w3wp.exe crashes in .net 4
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    <p>I have a website which has been up and running absolutely fine for about 8 months now. It's running .net 4 intergrated mode.</p> <p>Recently i've started to get some "random" w3wp.exe crashes, and after 5 of them, IIS rapid fail protection kicks in and I have to manually login to the server and start the application pool again.</p> <p>Here's what the event viewer says for the Error:</p> <pre><code>Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7afa2 Faulting module name: nlssorting.dll, version: 4.0.30319.296, time stamp: 0x504835c7 Exception code: 0xc00000fd Fault offset: 0x000000000000191f Faulting process id: 0x1998 Faulting application start time: 0x01ce6e6b9b80c949 Faulting application path: c:\windows\system32\inetsrv\w3wp.exe Faulting module path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\nlssorting.dll Report Id: d9cf3164-da5e-11e2-8cc5-f46d0440f6d5 </code></pre> <p>Straight after the crashes, i get an "Information" log in the event viewer which at the bottom gives me the location of a .wer file.</p> <p>This is what the .wer files contains:</p> <pre><code>Version=1 EventType=APPCRASH EventTime=130162847687759734 ReportType=2 Consent=1 ReportIdentifier=d7c5e520-da5e-11e2-8cc5-f46d0440f6d5 IntegratorReportIdentifier=d7c5e51f-da5e-11e2-8cc5-f46d0440f6d5 Response.type=4 Sig[0].Name=Application Name Sig[0].Value=w3wp.exe Sig[1].Name=Application Version Sig[1].Value=7.5.7601.17514 Sig[2].Name=Application Timestamp Sig[2].Value=4ce7afa2 Sig[3].Name=Fault Module Name Sig[3].Value=nlssorting.dll Sig[4].Name=Fault Module Version Sig[4].Value=4.0.30319.296 Sig[5].Name=Fault Module Timestamp Sig[5].Value=504835c7 Sig[6].Name=Exception Code Sig[6].Value=c00000fd Sig[7].Name=Exception Offset Sig[7].Value=000000000000197d DynamicSig[1].Name=OS Version DynamicSig[1].Value=6.1.7601.2.1.0.1296.17 DynamicSig[2].Name=Locale ID DynamicSig[2].Value=2057 DynamicSig[22].Name=Additional Information 1 DynamicSig[22].Value=6141 DynamicSig[23].Name=Additional Information 2 DynamicSig[23].Value=61419d6dee6cf74b8ac2b00b4c3b3373 DynamicSig[24].Name=Additional Information 3 DynamicSig[24].Value=c19b DynamicSig[25].Name=Additional Information 4 DynamicSig[25].Value=c19b8acf029a3088171b1f5f3dd9dc77 UI[2]=c:\windows\system32\inetsrv\w3wp.exe UI[5]=Check online for a solution (recommended) UI[6]=Check for a solution later (recommended) UI[7]=Close UI[8]=IIS Worker Process stopped working and was closed UI[9]=A problem caused the application to stop working correctly. Windows will notify you if a solution is available. UI[10]=&amp;Close LoadedModule[0]=c:\windows\system32\inetsrv\w3wp.exe LoadedModule[1]=C:\Windows\SYSTEM32\ntdll.dll LoadedModule[2]=C:\Windows\system32\kernel32.dll LoadedModule[3]=C:\Windows\system32\KERNELBASE.dll LoadedModule[4]=C:\Windows\system32\ADVAPI32.dll LoadedModule[5]=C:\Windows\system32\msvcrt.dll LoadedModule[6]=C:\Windows\SYSTEM32\sechost.dll LoadedModule[7]=C:\Windows\system32\RPCRT4.dll LoadedModule[8]=C:\Windows\system32\pcwum.DLL LoadedModule[9]=C:\Windows\system32\USER32.dll LoadedModule[10]=C:\Windows\system32\GDI32.dll LoadedModule[11]=C:\Windows\system32\LPK.dll LoadedModule[12]=C:\Windows\system32\USP10.dll LoadedModule[13]=C:\Windows\system32\ole32.dll LoadedModule[14]=c:\windows\system32\inetsrv\IISUTIL.dll LoadedModule[15]=C:\Windows\system32\IMM32.DLL LoadedModule[16]=C:\Windows\system32\MSCTF.dll LoadedModule[17]=C:\Windows\system32\CRYPTBASE.dll LoadedModule[18]=C:\Windows\system32\ntmarta.dll LoadedModule[19]=C:\Windows\system32\WLDAP32.dll LoadedModule[20]=c:\windows\system32\inetsrv\w3wphost.dll LoadedModule[21]=C:\Windows\system32\OLEAUT32.dll LoadedModule[22]=c:\windows\system32\inetsrv\nativerd.dll LoadedModule[23]=C:\Windows\system32\CRYPT32.dll LoadedModule[24]=C:\Windows\system32\MSASN1.dll LoadedModule[25]=C:\Windows\system32\XmlLite.dll LoadedModule[26]=C:\Windows\system32\ktmw32.dll LoadedModule[27]=c:\windows\system32\inetsrv\IISRES.DLL LoadedModule[28]=C:\Windows\system32\CRYPTSP.dll LoadedModule[29]=C:\Windows\system32\rsaenh.dll LoadedModule[30]=C:\Windows\system32\mscoree.dll LoadedModule[31]=C:\Windows\system32\CLBCatQ.DLL LoadedModule[32]=C:\Windows\system32\mlang.dll LoadedModule[33]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\webengine4.dll LoadedModule[34]=C:\Windows\system32\MSVCR100_CLR0400.dll LoadedModule[35]=C:\Windows\system32\USERENV.dll LoadedModule[36]=C:\Windows\system32\profapi.dll LoadedModule[37]=C:\Windows\system32\PSAPI.DLL LoadedModule[38]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscoreei.dll LoadedModule[39]=C:\Windows\system32\SHLWAPI.dll LoadedModule[40]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll LoadedModule[41]=C:\Windows\system32\inetsrv\iiscore.dll LoadedModule[42]=c:\windows\system32\inetsrv\W3TP.dll LoadedModule[43]=c:\windows\system32\inetsrv\w3dt.dll LoadedModule[44]=C:\Windows\system32\HTTPAPI.dll LoadedModule[45]=C:\Windows\system32\slc.dll LoadedModule[46]=C:\Windows\system32\WS2_32.dll LoadedModule[47]=C:\Windows\system32\NSI.dll LoadedModule[48]=C:\Windows\system32\Normaliz.dll LoadedModule[49]=C:\Windows\system32\faultrep.dll LoadedModule[50]=C:\Windows\system32\Secur32.dll LoadedModule[51]=C:\Windows\system32\SSPICLI.DLL LoadedModule[52]=C:\Windows\system32\NLAapi.dll LoadedModule[53]=C:\Windows\system32\napinsp.dll LoadedModule[54]=C:\Windows\System32\mswsock.dll LoadedModule[55]=C:\Windows\system32\DNSAPI.dll LoadedModule[56]=C:\Windows\System32\winrnr.dll LoadedModule[57]=C:\Windows\System32\wshtcpip.dll LoadedModule[58]=C:\Windows\System32\wship6.dll LoadedModule[59]=C:\Windows\system32\IPHLPAPI.DLL LoadedModule[60]=C:\Windows\system32\WINNSI.DLL LoadedModule[61]=C:\Windows\system32\rasadhlp.dll LoadedModule[62]=C:\Windows\System32\fwpuclnt.dll LoadedModule[63]=C:\Windows\System32\inetsrv\cachuri.dll LoadedModule[64]=C:\Windows\System32\inetsrv\cachfile.dll LoadedModule[65]=C:\Windows\System32\inetsrv\cachtokn.dll LoadedModule[66]=C:\Windows\System32\inetsrv\cachhttp.dll LoadedModule[67]=C:\Windows\System32\inetsrv\compdyn.dll LoadedModule[68]=C:\Windows\System32\inetsrv\compstat.dll LoadedModule[69]=C:\Windows\System32\inetsrv\defdoc.dll LoadedModule[70]=C:\Windows\System32\inetsrv\protsup.dll LoadedModule[71]=C:\Windows\System32\inetsrv\redirect.dll LoadedModule[72]=C:\Windows\System32\inetsrv\static.dll LoadedModule[73]=C:\Windows\System32\inetsrv\authanon.dll LoadedModule[74]=C:\Windows\System32\inetsrv\authbas.dll LoadedModule[75]=C:\Windows\System32\inetsrv\authsspi.dll LoadedModule[76]=C:\Windows\system32\NETAPI32.dll LoadedModule[77]=C:\Windows\system32\netutils.dll LoadedModule[78]=C:\Windows\system32\srvcli.dll LoadedModule[79]=C:\Windows\system32\wkscli.dll LoadedModule[80]=C:\Windows\System32\inetsrv\iprestr.dll LoadedModule[81]=C:\Windows\System32\inetsrv\modrqflt.dll LoadedModule[82]=C:\Windows\System32\inetsrv\logcust.dll LoadedModule[83]=C:\Windows\System32\inetsrv\custerr.dll LoadedModule[84]=C:\Windows\System32\inetsrv\loghttp.dll LoadedModule[85]=C:\Windows\System32\inetsrv\isapi.dll LoadedModule[86]=C:\Windows\System32\inetsrv\filter.dll LoadedModule[87]=C:\Windows\System32\inetsrv\validcfg.dll LoadedModule[88]=c:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_filter.dll LoadedModule[89]=C:\Windows\system32\inetsrv\wbhst_pm.dll LoadedModule[90]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\webengine.dll LoadedModule[91]=C:\Windows\assembly\NativeImages_v4.0.30319_64\mscorlib\4f52500ab48877b85e71430f4f46670f\mscorlib.ni.dll LoadedModule[92]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\nlssorting.dll LoadedModule[93]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System\a91f32875cb3ba779f1b3ceff1690251\System.ni.dll LoadedModule[94]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Core\0a8d99339ffe6b25debb8f8201c27664\System.Core.ni.dll LoadedModule[95]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Web\5b905bd7b71f9fd6bea2d05cc1ae85f8\System.Web.ni.dll LoadedModule[96]=C:\Windows\system32\sxs.dll LoadedModule[97]=C:\Windows\system32\RpcRtRemote.dll LoadedModule[98]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Configuration\fa65f89fd682c459fc5e7bcbd0418317\System.Configuration.ni.dll LoadedModule[99]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Xml\f4afb233f160b8e55aad4660e45b374c\System.Xml.ni.dll LoadedModule[100]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clrjit.dll LoadedModule[101]=C:\Windows\assembly\NativeImages_v4.0.30319_64\Microsoft.Build.Uti#\14e16d61fae3cd1d9a1fa79b789f8438\Microsoft.Build.Utilities.v4.0.ni.dll LoadedModule[102]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Runtime.Cach#\8fdbe304abab0631b8a4310b35f3d93a\System.Runtime.Caching.ni.dll LoadedModule[103]=C:\Windows\system32\shfolder.dll LoadedModule[104]=C:\Windows\system32\SHELL32.dll LoadedModule[105]=C:\Windows\assembly\NativeImages_v4.0.30319_64\Microsoft.JScript\85204dde340780329b569b025e249c23\Microsoft.JScript.ni.dll LoadedModule[106]=C:\Windows\system32\version.dll LoadedModule[107]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\587f6661\a99d8ff8\App_Code.cgixlnxh.dll LoadedModule[108]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Data.Linq\feaa494ad67542d2060b31b9eeb6458b\System.Data.Linq.ni.dll LoadedModule[109]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Data\b928128fca867546a858a1a39240d85c\System.Data.ni.dll LoadedModule[110]=C:\Windows\Microsoft.Net\assembly\GAC_64\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll LoadedModule[111]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\587f6661\a99d8ff8\assembly\dl3\595a888a\f26c0653_7f81cd01\HtmlAgilityPack.dll LoadedModule[112]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Drawing\5ae853f556290da9399b15b3619f7e15\System.Drawing.ni.dll LoadedModule[113]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\587f6661\a99d8ff8\assembly\dl3\85ba5013\f0c8f388_706bce01\TweetSharp.dll LoadedModule[114]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Web.Extensio#\0180a2d993d2a9699cf07f7163524fff\System.Web.Extensions.ni.dll LoadedModule[115]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Transactions\7b2099a1386e38ff198a51939304ce6e\System.Transactions.ni.dll LoadedModule[116]=C:\Windows\Microsoft.Net\assembly\GAC_64\System.Transactions\v4.0_4.0.0.0__b77a5c561934e089\System.Transactions.dll LoadedModule[117]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\587f6661\a99d8ff8\App_global.asax.yxdky-qn.dll LoadedModule[118]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.ServiceModel#\7a5a5ff4a0b3bb4ba4bcc13166918e36\System.ServiceModel.Activation.ni.dll LoadedModule[119]=C:\Windows\system32\bcrypt.dll LoadedModule[120]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Runtime.Dura#\799274e49455d0fe4ca563f42143bef2\System.Runtime.DurableInstancing.ni.dll LoadedModule[121]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Numerics\a66416296451fe6d2d8a5506ca41b23d\System.Numerics.ni.dll LoadedModule[122]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.ServiceModel\15834d73d2846fc01ed54488ccfff5c8\System.ServiceModel.ni.dll LoadedModule[123]=C:\Windows\assembly\NativeImages_v4.0.30319_64\SMDiagnostics\31f93b6be386908ff2727bcd825de0ca\SMDiagnostics.ni.dll LoadedModule[124]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Xaml.Hosting\cf8401f4952deb5303e0d7fd459ce530\System.Xaml.Hosting.ni.dll LoadedModule[125]=C:\Windows\system32\inetsrv\gzip.dll LoadedModule[126]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\587f6661\a99d8ff8\assembly\dl3\3d63b311\fe7c9b8a_706bce01\Hammock.ClientProfile.dll LoadedModule[127]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\587f6661\a99d8ff8\assembly\dl3\6a128bd2\c184e08a_706bce01\Newtonsoft.Json.dll LoadedModule[128]=C:\Windows\system32\rasapi32.dll LoadedModule[129]=C:\Windows\system32\rasman.dll LoadedModule[130]=C:\Windows\system32\rtutils.dll LoadedModule[131]=C:\Windows\system32\winhttp.dll LoadedModule[132]=C:\Windows\system32\webio.dll LoadedModule[133]=C:\Windows\system32\credssp.dll LoadedModule[134]=C:\Windows\system32\dhcpcsvc6.DLL LoadedModule[135]=C:\Windows\system32\dhcpcsvc.DLL LoadedModule[136]=C:\Windows\system32\security.dll LoadedModule[137]=C:\Windows\system32\schannel.DLL LoadedModule[138]=C:\Windows\system32\ncrypt.dll LoadedModule[139]=C:\Windows\system32\bcryptprimitives.dll LoadedModule[140]=C:\Windows\system32\GPAPI.dll FriendlyEventName=Stopped working ConsentKey=APPCRASH AppName=IIS Worker Process AppPath=c:\windows\system32\inetsrv\w3wp.exe </code></pre> <p>That nlssorting.dll seems to crop up a lot but I can't seem to find anything online related. The only thing I can find which matches my error is <a href="http://connect.microsoft.com/VisualStudio/feedback/details/665157/nlssorting-fault-crashes-iis" rel="noreferrer">here</a>, but that doesn't really help me.</p> <p>I'm completely stumped as to where to go from here to fix this. Here's what I've tried:</p> <ul> <li>Loading up IIS log files and trying every request from about 30 minutes before a crash, and none of the pages cause any errors.</li> <li>Searching my code for any recursion which might cause a stackoverflow, but there isn't any</li> <li>trawling online for ANYTHING that might help</li> </ul> <p>Has anyone else ever had any problems with nlssorting.dll ? Can i get some more information from the .wer file that might help me pin point where this is happening? </p> <p>Thanks in advance for any help!</p> <p><strong>UPDATE</strong></p> <p>I was using a 3rd party DLL, which was causing a stack overflow exception (<code>0xc00000fd</code>) </p> <p>After more investigation, it was only happening after a certain chain of events happened - hence the "random" in the title. Removing the DLL fixed the problem.</p>
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    1. COLook at that: http://stackoverflow.com/questions/3044752/how-do-i-crash-the-app-pool/3045137#3045137
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    2. CO@Aristos I've looked through my code for any recursion and can't find any. the site has also been running absolutely fine for about 8 months, and these crashes have only just started happening. it's not a big site. do you have any knowledge on extracting more information from the .wer file?
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