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[phaser] kernels freeze #598

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jordens opened this issue Oct 28, 2016 · 4 comments
Closed

[phaser] kernels freeze #598

jordens opened this issue Oct 28, 2016 · 4 comments

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@jordens
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jordens commented Oct 28, 2016

With current phaser (b14fcd4) kernels freeze depending on where I return:
If I place a return before the line that prints AD9154_SCR_L_REG, the kernel runs fine.
https://github.com/m-labs/artiq/blob/phaser/artiq/examples/phaser/repository/test_ad9154_status.py#L107
If I place it anywhere after (or using the code in the repository as is), it does not complete loading (no _D2HMsgType.LOAD_COMPLETED received, i.e. nothing received).
The particular line is not the problem. It seems to be more the amount of code.

Good (return before line 107) and bad (return just after line 107) dumps are attached.

good_bad.tar.gz

@jordens
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jordens commented Oct 28, 2016

This didn't happen before i merged master.

@whitequark
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I don't think this is related to the compiler. Rather this seems like yet another lwip bug.

@jordens
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jordens commented Nov 13, 2016

Still happens in 2e48250

@whitequark
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This is a manifestation of #637, let's discuss it there.

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