DLL that was not present in memory despite not being formally unloaded

https://devblogs.microsoft.com/oldnewthing/20260625-00/?p=112467

45•ibobev•3h ago

Comments

defrost•1h ago

That's some doggedly determined back tracing to uncover an unexpected heisenbug (loose meaning).

  So a total of 46% of the crashes were due to this rogue force-unload of a DLL. This is a case of bucket spray, where a single underlying cause generates a large number of different types of crashes.

chrisjj•1h ago

We've not yet seen sufficient evidence this is any type of heisenbug.

brookst•33m ago

Looking more closely would resolve it one way or the other.

defrost•20m ago

My hat.

defrost•21m ago

It's not, by the article, in a strict taxonomy.

In a wider sloppier sense some use the term for bugs that are hard to pin down and exhibit wide behaviours.

zabzonk•1h ago

> The good news for the shell32 team is that they are off the hook; they are the victim. The bad news is that we don’t know who the culprit is.

The story of software development through the ages.

brookst•34m ago

When you’ve eliminated all possible explanation, it’s time to pack it in.

taneq•24m ago

Oh man, my journey from idealistic “there is always an explanation” youth to “some days it do be like that, and we may never know why” in a nutshell.

masfuerte•1h ago

Part two:

https://devblogs.microsoft.com/oldnewthing/20260626-00/?p=11...

Someone1234•41m ago

Part 1 was interesting; it isn't clear why he split that into a Part 2 since it adds little to the story and is a paragraph long.

taneq•26m ago

Might have been an “I need to look into this” segueing into “ never mind”?

kumarvvr•55m ago

I see posts like this, this deep dive into the call stacks and am always humbled and reminded of the limits of my knowledge about computers and programs.

Panzer04•41m ago

Not a programmer?

kumarvvr•26m ago

I am, for 20 years now. I do embedded stuff too. Still.

Panzer04•8m ago

I'm a bit surprised you don't run into things like this then :). Do you use GDB and the like at all?

Or do you mean all the windows specific stuff etc, I guess I was more imaging the call stack etc.

No insult was intended XD

dist-epoch•33m ago

Goes both ways, author probably knows little about FPGA programming, React or PyTorch.

rwmj•12m ago

What MSFT support policy do you need to have the legendary Raymond Chen take a look at it?

I say this because we've reported a bunch of Windows bugs (mainly running Windows under virtualization) and getting them to pay attention at all is an up-hill battle.

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DLL that was not present in memory despite not being formally unloaded

Comments

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DLL that was not present in memory despite not being formally unloaded

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Anonymous GitHub account mass-dropping undisclosed 0-days

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