On 25/08/2018 00:54, Eric Wong wrote:
> The pipe_poll function does not use locks, and adding an entry
> to the waitqueue is not guaranteed to happen before pipe->nrbufs
> (or other fields) are read, leading to missed wakeups.
>
> Looking at Ruby CI build logs and backtraces, I've noticed
> occasi
On Fri, Aug 24, 2018 at 10:54:31PM +, Eric Wong wrote:
> The pipe_poll function does not use locks, and adding an entry
> to the waitqueue is not guaranteed to happen before pipe->nrbufs
> (or other fields) are read, leading to missed wakeups.
>
> Looking at Ruby CI build logs and backtraces,
The pipe_poll function does not use locks, and adding an entry
to the waitqueue is not guaranteed to happen before pipe->nrbufs
(or other fields) are read, leading to missed wakeups.
Looking at Ruby CI build logs and backtraces, I've noticed
occasional instances where processes are stuck in select
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