[ubuntu-mono] [Bug 700504] [NEW] calling NamedPipeServerStream.Disconnect causes SIGSEGV

[Jason Crain]

Public bug reported:

Binary package hint: mono

When compiled and run, the following program crashes with SIGSEGV

public class Foo {
    static void Main() {
        new System.IO.Pipes.NamedPipeServerStream("testpipe").Disconnect();
    }
}

$ gmcs pipetest.cs
$ mono pipetest.exe
Stacktrace:

  at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
  at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
  at System.IO.Pipes.UnixNamedPipeServer.Disconnect () <0x0002b>
  at System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00020>
  at (wrapper remoting-invoke-with-check) System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00053>
  at Foo.Main () <0x0003b>
  at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) <0x00049>

Native stacktrace:

        mono() [0x48563b]
        mono() [0x4d275f]
        /lib/libpthread.so.0(+0xfb40) [0x7f44c0ed4b40]
        /lib/libc.so.6(fclose+0x4) [0x7f44c09268a4]
        [0x41d4e91b]

Debug info from gdb:

Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.

=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted

$ mono --version
Mono JIT compiler version 2.6.7 (Debian 2.6.7-3ubuntu1)
Copyright (C) 2002-2010 Novell, Inc and Contributors. www.mono-project.com
        TLS:           __thread
        GC:            Included Boehm (with typed GC and Parallel Mark)
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none

** Affects: mono (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  Binary package hint: mono
  
  When compiled and run, the following program crashes with SIGSEGV
  
  public class Foo {
-         static void Main() {
-                 new System.IO.Pipes.NamedPipeServerStream("testpipe").Disconnect();
-         }
+     static void Main() {
+         new System.IO.Pipes.NamedPipeServerStream("testpipe").Disconnect();
+     }
  }
- 
  
  $ gmcs pipetest.cs
  $ mono pipetest.exe
  Stacktrace:
  
-   at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
-   at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
-   at System.IO.Pipes.UnixNamedPipeServer.Disconnect () <0x0002b>
-   at System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00020>
-   at (wrapper remoting-invoke-with-check) System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00053>
-   at Foo.Main () <0x0003b>
-   at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) <0x00049>
+   at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
+   at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
+   at System.IO.Pipes.UnixNamedPipeServer.Disconnect () <0x0002b>
+   at System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00020>
+   at (wrapper remoting-invoke-with-check) System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00053>
+   at Foo.Main () <0x0003b>
+   at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) <0x00049>
  
  Native stacktrace:
  
-         mono() [0x48563b]
-         mono() [0x4d275f]
-         /lib/libpthread.so.0(+0xfb40) [0x7f44c0ed4b40]
-         /lib/libc.so.6(fclose+0x4) [0x7f44c09268a4]
-         [0x41d4e91b]
+         mono() [0x48563b]
+         mono() [0x4d275f]
+         /lib/libpthread.so.0(+0xfb40) [0x7f44c0ed4b40]
+         /lib/libc.so.6(fclose+0x4) [0x7f44c09268a4]
+         [0x41d4e91b]
  
  Debug info from gdb:
  
  Could not attach to process.  If your uid matches the uid of the target
  process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
  again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
  ptrace: Operation not permitted.
  
  =================================================================
  Got a SIGSEGV while executing native code. This usually indicates
- a fatal error in the mono runtime or one of the native libraries 
+ a fatal error in the mono runtime or one of the native libraries
  used by your application.
  =================================================================
  
  Aborted
+ 
+ $ mono --version
+ Mono JIT compiler version 2.6.7 (Debian 2.6.7-3ubuntu1)
+ Copyright (C) 2002-2010 Novell, Inc and Contributors. www.mono-project.com
+         TLS:           __thread
+         GC:            Included Boehm (with typed GC and Parallel Mark)
+         SIGSEGV:       altstack
+         Notifications: epoll
+         Architecture:  amd64
+         Disabled:      none

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https://bugs.launchpad.net/bugs/700504

Title:
  calling NamedPipeServerStream.Disconnect causes SIGSEGV

Status in “mono” package in Ubuntu:
  New

Bug description:
  Binary package hint: mono

When compiled and run, the following program crashes with SIGSEGV

public class Foo {
    static void Main() {
        new System.IO.Pipes.NamedPipeServerStream("testpipe").Disconnect();
    }
}

$ gmcs pipetest.cs
$ mono pipetest.exe
Stacktrace:

  at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
  at (wrapper managed-to-native) Mono.Unix.Native.Stdlib.fclose (intptr) <0x0005b>
  at System.IO.Pipes.UnixNamedPipeServer.Disconnect () <0x0002b>
  at System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00020>
  at (wrapper remoting-invoke-with-check) System.IO.Pipes.NamedPipeServerStream.Disconnect () <0x00053>
  at Foo.Main () <0x0003b>
  at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) <0x00049>

Native stacktrace:

        mono() [0x48563b]
        mono() [0x4d275f]
        /lib/libpthread.so.0(+0xfb40) [0x7f44c0ed4b40]
        /lib/libc.so.6(fclose+0x4) [0x7f44c09268a4]
        [0x41d4e91b]

Debug info from gdb:

Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.

=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted

$ mono --version
Mono JIT compiler version 2.6.7 (Debian 2.6.7-3ubuntu1)
Copyright (C) 2002-2010 Novell, Inc and Contributors. www.mono-project.com
        TLS:           __thread
        GC:            Included Boehm (with typed GC and Parallel Mark)
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none