linux-kernel - Re: Stall during read() on CIFS with 4.19

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Date:   Tue, 01 Jan 2019 20:30:42 +0100
From:   Yves-Alexis Perez <corsac@...sac.net>
To:     Steve French <sfrench@...ba.org>, linux-cifs@...r.kernel.org,
        samba-technical@...ts.samba.org,
        Ronnie Sahlberg <lsahlber@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        Paulo Alcantara <palcantara@...e.com>,
        Pavel Shilovsky <pshilov@...rosoft.com>
Subject: Re: Stall during read() on CIFS with 4.19

On Tue, 2019-01-01 at 13:33 +0100, Yves-Alexis Perez wrote:
> Hi,
> 
> with the upgrade to 4.19 in Debian sid, I experienced a regression with CIFS
> filesystems.
> 
> The server is running Debian stretch with samba, the clients are running
> Debian sid or stretch. With 4.18 kernels everything is fine, but with 4.19
> while the mount succeeds, any read() syscall on a file open()ed from a share
> just stalls.

Hi all,

I'm doing a common reply following quick replies from Steve and Paul
(thanks!).

The bug is apparently fixed by 
https://marc.info/?l=linux-cifs&m=154629475812244&w=3 and also by mounting
with a rsize reduced to 16384.

Regards,
-- 
Yves-Alexis