Re: NFSD threads hang when destroying a session or client ID

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rik.theys writes via Kernel.org Bugzilla:

(In reply to Chuck Lever from comment #25)
> > [Wed Jan 29 10:11:17 2025] cb_status=-521 tk_status=-10036
> 
> -521 = -EBADHANDLE (NFS4ERR_BADHANDLE)
> 
> -10036 = -NFS4ERR_BAD_XDR
> 
> I see several similar events in the trace.dat report. My guess is the client
> is generating BADHANDLE (nfs4_callback_getattr) but the server is having
> some trouble decoding that result.
> 
> My first impression is that XDR result decoders are supposed to return -EIO
> in this case. NFS4ERR_BAD_XDR is supposed to mean the /remote side/ was not
> able to decode a Call, not the local side couldn't decode the Reply.
> 
> RFC 8881 Section 20.1.3 states:
> 
> "If the filehandle specified is not one for which the client holds an
> OPEN_DELEGATE_WRITE delegation, an NFS4ERR_BADHANDLE error is returned."
> 
> This appears to be a bug in the new CB_GETATTR implementation. It might or
> might not cause the callback workqueue to stall, but it should probably be
> filed as a separate bug.

I've opened Bug #219737 for this.

Regards,
Rik

View: https://bugzilla.kernel.org/show_bug.cgi?id=219710#c27
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