linux-kernel - Samba llseek bug

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Message-ID: <434992.1724429946@warthog.procyon.org.uk>
Date: Fri, 23 Aug 2024 17:19:06 +0100
From: David Howells <dhowells@...hat.com>
To: Steve French <sfrench@...ba.org>, Jeremy Allison <jra@...ba.org>,
    samba-technical@...ts.samba.org
Cc: dhowells@...hat.com, Paulo Alcantara <pc@...guebit.com>,
    Christian Brauner <christian@...uner.io>,
    Jeff Layton <jlayton@...nel.org>,
    Matthew Wilcox <willy@...radead.org>, netfs@...ts.linux.dev,
    linux-afs@...ts.infradead.org, linux-cifs@...r.kernel.org,
    linux-nfs@...r.kernel.org, ceph-devel@...r.kernel.org,
    v9fs@...ts.linux.dev, linux-erofs@...ts.ozlabs.org,
    linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
    linux-kernel@...r.kernel.org
Subject: Samba llseek bug

Note that whilst testing my cifs fixes with the generic/075 and generic/112
xfstests, the tests occasionally hit a bug in Samba whereby llseek() fails
because there are too many extents in the server file for the server to
report.  I've noted this before:

	https://lore.kernel.org/linux-cifs/349671.1716335639@warthog.procyon.org.uk/

is there a fix for this I can try?

David