[Bugs] [Bug 1340361] Call_bail of a frame due to not able to find a saved frame in reply

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1340361

Raghavendra G <rgowdapp at redhat.com> changed:

           What    |Removed                     |Added
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             Status|POST                        |ASSIGNED



--- Comment #2 from Raghavendra G <rgowdapp at redhat.com> ---
> As for the RCA for not able to lookup a saved frame for response, I saw in
> rpc-clnt:
> 
> 1. Submit the request to transport for transmission to brick.
> 2. Save the frame for future reference while processing reply.
> 
> Now, if we get a response between 1 and 2 (before we were able to save the
> frame), we would be saving the frame of a request whose reply is already
> received. This can result in call-bail.

This RCA is incorrect, since both 1 and 2 happen atomically under lock. When
looking for a saved frame during reply processing we acquire same lock and
hence atomicity is preserved.

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