[Mono-aspnet-list] Cannot load symbols from resource files: is it a bug?

Antonio Anzivino djechelon at zighinetto.org
Fri Feb 19 10:18:55 EST 2010


I'm trying to debug my web application under Linux using mdb to search for a
possible Mono deadlock (at least, as it just hangs, it looks like that, and
my app is not subject to deadlocks).


I ran a stand-alone mod-mono-server2 instance as my user and it's connected
to Apache via Unix socket. After some hours, the application (finally)
hanged and I tried to attach mdb. I found this:


Cannot read DWARF debugging info from symbol file
System.NullReferenceException: Object reference not set to an instance of an

  at Mono.Debugger.TargetBinaryAccess..ctor (Mono.Debugger.TargetBlob blob)
[0x0000d] in

  at Mono.Debugger.TargetBinaryReader..ctor (Mono.Debugger.TargetBlob blob)
[0x00000] in <filename unknown>:0 

  at Mono.Debugger.Backend.DwarfBinaryReader..ctor
(Mono.Debugger.Backend.Bfd bfd, Mono.Debugger.TargetBlob blob, Boolean
is64bit) [0x00000] in <filename unknown>:0 

  at Mono.Debugger.Backend.DwarfReader.get_DebugArangesReader () [0x00000]
in /usr/src/packages/BUILD/mono-debugger-2.6/backend/os/DwarfReader.cs:790 

  at Mono.Debugger.Backend.DwarfReader.read_aranges () [0x00000] in

  at Mono.Debugger.Backend.DwarfReader..ctor (Mono.Debugger.Backend.Bfd bfd,
Mono.Debugger.Module module) [0x00187] in

  at (wrapper remoting-invoke-with-check)

  at Mono.Debugger.Backend.Bfd.load_dwarf () [0x00017] in

The Mono runtime of the target application does not support attaching,

attaching as a native application.



That's a resource file. No debug symbol is expected to be there!

Should I ignore it or is it a bug with the debugger?


Thank you

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