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dotnet clr
group:SOS.dll loses symbol information
dotnet clr:
was more SOS than windbg so i should post over here. I attach to the aspnet_wp process to debug a v1.1.4322 asp.net app. I load the sos.dll and set my breakpoint inside a managed function call via 'bp' command. When it breaks i dump the stack and it looks great, Param names, source line numbers and all. When i navigate to other sections of the site and then return to hit the breakpoint again, all symbol information is gone. So i go from this -> --------------------------- 0x0086f714 0x05a99778 [DEFAULT] [hasThis] Void CEC.Staff..ctor(I4,I4) at [+0x0] [+0x0] C:\All_prod_Source\CEC_MC\CEC\Staff.vb:329 PARAM: this: 0x012d5514 (CEC.Staff) PARAM: int32 StaffID: 3228 PARAM: int32 CampusID: 0 0x0086f71c 0x05a99639 [DEFAULT] Class CEC.Staff CEC.Academics.EnrollmentClass.GetAcademicAdvisor(I4) at [+0x169] [+0x7b] PARAM: int32 adEnrollID: 91591 0x0086f76c 0x05a98a34 [DEFAULT] [hasThis] Void VC._default.AddStudentAcademicAdvisor() at [+0x324] [+0x13f] C:\All_prod_Source\VC_MC\default.aspx.vb:244 PARAM: this: 0x012875e4 (ASP.default_aspx) 0x0086f838 0x05a9826e [DEFAULT] [hasThis] Void VC._default.Page_Load(Object,Class System.EventArgs) at [+0x66] [+0x12] C:\All_prod_Source\VC_MC\default.aspx.vb:87 PARAM: this: 0x012875e4 (ASP.default_aspx) PARAM: class System.Object sender: 0x012875e4 (ASP.default_aspx) PARAM: class System.EventArgs e: 0x00ed02f4 to this-> ------------ :-( to this 0x0086f714 0x05a99778 [DEFAULT] [hasThis] Void CEC.Staff..ctor(I4,I4) 0x0086f71c 0x05a99639 [DEFAULT] Class CEC.Staff CEC.Academics.EnrollmentClass.GetAcademicAdvisor(I4) 0x0086f76c 0x05a9888e [DEFAULT] [hasThis] Void VC._default.AddStudentAcademicAdvisor() 0x0086f838 0x05a9826e [DEFAULT] [hasThis] Void VC._default.Page_Load(Object,Class System.EventArgs) Can anyone help me understand why SOS.dll loses the symbol info? as always, thanks in advance for any and all help.
Yes, all webconfigs have debug=3Dtrue and the dlls are built as debug.
The info im talking about is actually pulled from the pdb files (souce code file and line # ect). I have multiple apps on the site that use the same dlls in the local bin. I think when i jump from one to another and then come back it confuses it somehow. [quoted text, click to view] Dan Nemesek wrote:
> Hi, > > Are your pages set to debug=3Dtrue? > Are your assemblies that you are calling from the page set to debug build? > > Just a guess here but perhaps the first time you hit the page due to JIT > compilation SOS can better resolve symbols, but every subsequent hit it > can't. > From my experience without the debug settings =3D true you shouldn't get = any > symbolic info for managed stuff. > > Thanks, > > Dan > > This posting is provided "AS IS" with no warranties, and confers no right= s=2E > You assume all risk for your use. =A9 2002 Microsoft Corporation. > All rights reserved. > Use of included script samples are subject to the terms specified at > http://www.microsoft.com/info/cpyright.htm > Please reply to the newsgroups only.
Hi,
Are your pages set to debug=true? Are your assemblies that you are calling from the page set to debug build? Just a guess here but perhaps the first time you hit the page due to JIT compilation SOS can better resolve symbols, but every subsequent hit it can't. From my experience without the debug settings = true you shouldn't get any symbolic info for managed stuff. Thanks, Dan This posting is provided "AS IS" with no warranties, and confers no rights. You assume all risk for your use. © 2002 Microsoft Corporation. All rights reserved. Use of included script samples are subject to the terms specified at http://www.microsoft.com/info/cpyright.htm Please reply to the newsgroups only.
Thank you for your reply.
Ok, here we go from the start Start windbg Attach to the aspnet_wp process (loads all modules) At the command line I type ".load clr10\sos.dll" Then "!sym noisy" noisy mode - symbol prompts on then ".reload" Reloading current modules ..=2E.......................................................................= ..=2E....................................................................... DBGHELP: ntdll - public symbols c:\symbols\ntdll.pdb\36515FB5D04345E491F672FA2E2878C02\ntdll.pdb then "k" ChildEBP RetAddr 05a6ffc8 7c9507a8 ntdll!DbgBreakPoint 05a6fff4 00000000 ntdll!DbgUiRemoteBreakin+0x2d Now I set a breakpoint for CLR exceptions. The bp will dump the managed stack and then continue. "sxe -c "!cen;!clrstack -p;g" CLR" Then I hit go and load the main page. The debugger outputs the managed stack along with the param names and actual source code line numbers. System.InvalidCastException (0x15bba80) Thread 1 ESP EIP 0x0086f6f4 0x7c81eb33 [FRAME: HelperMethodFrame] 0x0086f720 0x04effa67 [DEFAULT] ValueClass System.DateTime Microsoft.VisualBasic.CompilerServices.DateType.FromObject(Object) 0x0086f760 0x04eff92f [DEFAULT] ValueClass System.DateTime CEC.Data.DBConvert.CvDate(Object) at [+0x4f] [+0x1b] PARAM: class System.Object obj: 0x00e7b8e0 (System.DBNull) 0x0086f7b0 0x0496c409 [DEFAULT] [hasThis] Void CEC.VC.User..ctor(I4) at [+0x4b1] [+0x277] PARAM: this: 0x015b7c10 (CEC.VC.User) PARAM: int32 UserID: 3064790 0x0086f880 0x05866781 [DEFAULT] [hasThis] Void VC.BreadCrumb.Page_Load(Object,Class System.EventArgs) at [+0xa1] [+0x52] C:\All_prod_Source\VC_MC\Controls\Components\BreadCrumb.ascx.vb:25 PARAM: this: 0x0151fa60 (ASP.BreadCrumb_ascx) PARAM: class System.Object sender: 0x0151fa60 (ASP.BreadCrumb_ascx) PARAM: class System.EventArgs e: 0x00ed0558 0x0086f8d4 0x00b2b55b [FRAME: MulticastFrame] [DEFAULT] [hasThis] Void System.EventHandler.Invoke(Object,Class System.EventArgs) 0x0086f8e8 0x056437dc [DEFAULT] [hasThis] Void System.Web.UI.Control.OnLoad(Class System.EventArgs) Now this works again and again if I refresh the page. When I click on a different link that brings me to another section of the site I get the same invalid cast exception dump but without the lines and param names. System.InvalidCastException (0x12ae12c) Thread 1 ESP EIP 0x0086f584 0x7c81eb33 [FRAME: HelperMethodFrame] 0x0086f5b0 0x04effa67 [DEFAULT] ValueClass System.DateTime Microsoft.VisualBasic.CompilerServices.DateType.FromObject(Object) 0x0086f5f0 0x04eff92f [DEFAULT] ValueClass System.DateTime CEC.Data.DBConvert.CvDate(Object) 0x0086f640 0x091e8611 [DEFAULT] [hasThis] Void CEC.VC.User..ctor(I4) 0x0086f710 0x091e7b6f [DEFAULT] Void CEC.VC.UserCache.CacheUserInfo(I4,SZArray String,Class System.Web.SessionState.HttpSessionState) 0x0086f7b0 0x091e6fb8 [DEFAULT] [hasThis] Void VC.Navigation.Page_Load(Object,Class System.EventArgs) 0x0086f8d4 0x00b2b55b [FRAME: MulticastFrame] [DEFAULT] [hasThis] Void System.EventHandler.Invoke(Object,Class System.EventArgs) ..reload Reloading current modules ..=2E.......................................................................= ..=2E....................................................................... DBGHELP: ntdll - public symbols c:\symbols\ntdll.pdb\36515FB5D04345E491F672FA2E2878C02\ntdll.pdb k ChildEBP RetAddr 07f9ffc8 7c9507a8 ntdll!DbgBreakPoint 07f9fff4 00000000 ntdll!DbgUiRemoteBreakin+0x2d The output from those commands looks exactly the same. I'm at a loss as to why it cannot use the symbol information. [quoted text, click to view] Dan Nemesek wrote:
> Hi, > > Execute the following commands to get the debugger to tell you what it's > doing during resolution > "!sym noisy" > > Then execute ".reload" to get the debugger to re-resolve symbols using the > current sym path. Execute a "k" command to resolve a stack that contains > the image your interested so you can see what it does. If your image is n= ot > in a current stack you can force it to load by executing ".reload /f > myimage.ext" > > Do this when the symbols resolve and then repeat when the symbols don't > resolve to see if you notice any difference. > > Thanks, > > Dan > > This posting is provided "AS IS" with no warranties, and confers no right= s=2E > You assume all risk for your use. =A9 2002 Microsoft Corporation. > All rights reserved. > Use of included script samples are subject to the terms specified at > http://www.microsoft.com/info/cpyright.htm > Please reply to the newsgroups only.
Yes, different app domains with local DLLS in the bin of each app dir.
The dlls are the exact same though, symbols and all. I will keep looking at it and try to give you more info. [quoted text, click to view] Dan Nemesek wrote:
> I wasn't able to repro using a simple two page test. See if you can repro > this using a simple two page test. If you can't give me more specifics on > your web app deployment, for example are you browsing through pages that > would be in different app domains? > > Thanks, > > Dan > > This posting is provided "AS IS" with no warranties, and confers no right= s=2E > You assume all risk for your use. =A9 2002 Microsoft Corporation. > All rights reserved. > Use of included script samples are subject to the terms specified at > http://www.microsoft.com/info/cpyright.htm > Please reply to the newsgroups only.
Hi,
Execute the following commands to get the debugger to tell you what it's doing during resolution "!sym noisy" Then execute ".reload" to get the debugger to re-resolve symbols using the current sym path. Execute a "k" command to resolve a stack that contains the image your interested so you can see what it does. If your image is not in a current stack you can force it to load by executing ".reload /f myimage.ext" Do this when the symbols resolve and then repeat when the symbols don't resolve to see if you notice any difference. Thanks, Dan This posting is provided "AS IS" with no warranties, and confers no rights. You assume all risk for your use. © 2002 Microsoft Corporation. All rights reserved. Use of included script samples are subject to the terms specified at http://www.microsoft.com/info/cpyright.htm Please reply to the newsgroups only.
Justin,
I will see if I can repro. I will keep you posted as to what the results are. Thanks, Dan This posting is provided "AS IS" with no warranties, and confers no rights. You assume all risk for your use. © 2002 Microsoft Corporation. All rights reserved. Use of included script samples are subject to the terms specified at http://www.microsoft.com/info/cpyright.htm Please reply to the newsgroups only.
I wasn't able to repro using a simple two page test. See if you can repro
this using a simple two page test. If you can't give me more specifics on your web app deployment, for example are you browsing through pages that would be in different app domains? Thanks, Dan This posting is provided "AS IS" with no warranties, and confers no rights. You assume all risk for your use. © 2002 Microsoft Corporation. All rights reserved. Use of included script samples are subject to the terms specified at http://www.microsoft.com/info/cpyright.htm Please reply to the newsgroups only.
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