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Go HTTP client stuck on epoll_pwait #82

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fwsGonzo opened this issue Nov 21, 2022 · 1 comment
Open

Go HTTP client stuck on epoll_pwait #82

fwsGonzo opened this issue Nov 21, 2022 · 1 comment
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bug Something isn't working help wanted Extra attention is needed

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@fwsGonzo
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It panics in a strange place:

https://gist.github.com/fwsGonzo/01399b308fda7d9afc1e4d5bec1891ac

I have no current theory on what the problem could be. I looked over the fine print in the atomics section of the unprivileged spec and I couldn't see anything that I did obviously wrong. I also implemented page-crossing slowpath memory reads/writes and saw no difference.
@fwsGonzo fwsGonzo added the bug Something isn't working label Nov 21, 2022
@fwsGonzo
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It no longer panics but seems to get stuck calling epoll_pwait repeatedly. I can see the Go code, and I have inspected the inputs and outputs of the epoll wait. Nothing looks wrong. Could it be a bug in atomic operations? Go uses a lot of them in that path.

@fwsGonzo fwsGonzo changed the title Go HTTP client panics Go HTTP client stuck on epoll_pwait Nov 4, 2023
@fwsGonzo fwsGonzo added the help wanted Extra attention is needed label Nov 15, 2023
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@fwsGonzo