AccessViolationException in Directory.cs about longpath HOT 8 CLOSED

What is the detail of the exception? Usually that tells you exactly why it occurred.

from longpath.

Here is the detail:

System.AccessViolationException was unhandled
HResult=-2147467261
Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source=FRAC
StackTrace:
at Pri.LongPath.NativeMethods.GetSecurityDescriptorLength(IntPtr byteArray)
at Pri.LongPath.Directory.GetAccessControl(String path, AccessControlSections includeSections) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\LongPath\Directory.cs:line 914
at Pri.LongPath.Directory.GetAccessControl(String path) in
REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\LongPath\Directory.cs:line 868
at Pri.LongPath.DirectoryInfo.GetAccessControl() in
REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\LongPath\DirectoryInfo.cs:line 208
at FRAC.FRACMainForm.CheckAccess(DirectoryInfo directory) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 156
at FRAC.FRACMainForm.ProcessFolder(DirectoryInfo root) in
REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 68
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 131
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.ProcessFolderRecursively(DirectoryInfo root) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 141
at FRAC.FRACMainForm.StartButton_Click(Object sender, EventArgs e) in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Form1.cs:line 217
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at FRAC.Program.Main() in REDACTED\Documents\Visual Studio 2010\Projects\FRAC\FRAC\Program.cs:line 18
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:

from longpath.

Sorry, accidentally closed it.

Any Ideas?

from longpath.

Still having the same issue, any guidance?

from longpath.

Unfortunately I'm unable to reproduce this so it's hard to do the right thing when it happens. Is there any other detail you can provide, like type of file system being accessed (local, share, soft-link, etc.)? Is it within a domain (security policies that get pushed, etc.). What type of security is on the directories being scanned?

from longpath.

Well upon further investigation it looks like it's related to the issue with UNC paths. The error happens as soon as the UNC path exceeds 250 characters. If this sounds right, i'll close this issue.

from longpath.

I'm seeing the same behavior and I'm fairly certain it only happens when the UNC path exceeds 250 characters. Is there a good way around this or a fix?

Edit: I should say I get the same error message on File.GetAccessRule(\\server\share)

from longpath.

Please try latest code with UNC and reparse point support. I cannot reproduce this with the latest build.

from longpath.