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From:   David Howells <dhowells@redhat.com>
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References: <ZUiXkPPP1TuOgmmf@fedora.fritz.box> <20231022183917.1013135-1-sanpeqf@gmail.com> <ZUfQo47uo0p2ZsYg@fedora.fritz.box> <CAH2r5msde65PMtn-96VZDAQkT_rq+e-2G4O+zbPUR8zSWGxMsg@mail.gmail.com> <20231105193601.GB91123@sol.localdomain> <ZUfvk-6y2pER6Rmc@fedora.fritz.box> <20231105201516.GC91123@sol.localdomain>
To:     Damian Tometzki <damian@riscv-rocks.de>
Cc:     dhowells@redhat.com, Eric Biggers <ebiggers@kernel.org>,
        Steve French <smfrench@gmail.com>,
        John Sanpe <sanpeqf@gmail.com>,
        CIFS <linux-cifs@vger.kernel.org>,
        Namjae Jeon <linkinjeon@kernel.org>,
        Paulo Alcantara <pc@manguebit.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: smb cifs: Linux 6.7 pre rc-1 kernel dump in smb2_get_aead_req
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Date:   Mon, 06 Nov 2023 10:01:17 +0000
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Damian Tometzki <damian@riscv-rocks.de> wrote:

> the revert of f1b4cb650b9a0eeba206d8f069fcdc532bfbcd74 solved the issue of
> the kernel dump.

That almost certainly did not fix the problem - merely hid the wanring.

Prior to f1b4cb650b9a0eeba206d8f069fcdc532bfbcd74, ->user_backed is explicitly
set if the iov_iter is initialised to a user-backed type, now it's just
inferred from the type being 0 or 1 - so I think that the iov_iter has not
been initialised somewhere.

Somewhere being from SMB2_tcon() and cifs_send_recv() on down.

David