From: Tobias Hoffmann <smilingthax@googlemail.com>
To: Clemens Ladisch <clemens@ladisch.de>
Cc: tiwai@suse.de, alsa-devel@alsa-project.org, robin@gareus.org,
David Henningsson <david.henningsson@canonical.com>
Subject: Re: [WIP PATCH] Scarlett mixer interface for 6i6, 18i6, 18i8 and 18i20.
Date: Mon, 13 Oct 2014 14:02:12 +0200 [thread overview]
Message-ID: <543BBF44.3020109@googlemail.com> (raw)
In-Reply-To: <543BB9CF.7010806@ladisch.de>
On 13/10/14 13:38, Clemens Ladisch wrote:
> Tobias Hoffmann wrote:
>> On 07/10/14 17:16, David Henningsson wrote:
>>> + err = set_ctl_urb2(mixer->chip, UAC2_CS_CUR, 0x0100, 0x29, "\x80\xbb\x00\x00", 4);
>> There have been two reports of users that had to replace the set_ctl_urb2 line with:
>>
>> char buffer[4] = { '\x80', '\xbb', '\x00', '\x00' };
>> err = set_ctl_urb2(mixer->chip, UAC2_CS_CUR, 0x0100, 0x29, buffer, 4);
>>
>> otherwise they would get a kernel oops, e.g.:
> [...]
>
> This crash is inside memcpy(), where this memory type cannot make any
> difference.
>
> Please show the entire oops.
The first reporter (18i8) only sent me a patch with exactly that change,
claiming:
> It also oopses my kernel because of some constness issues.
Here are two reports (6i6) with oops trace:
https://github.com/smilingthax/alsa-driver_scarlett/issues/7
https://github.com/smilingthax/alsa-driver_scarlett/issues/2#issuecomment-54364354
Tobias
next prev parent reply other threads:[~2014-10-13 12:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-07 15:16 [WIP PATCH] Scarlett mixer interface for 6i6, 18i6, 18i8 and 18i20 David Henningsson
2014-10-07 15:24 ` Tobias Hoffmann
2014-10-08 19:04 ` Daniel Mack
2014-10-08 21:21 ` Robin Gareus
2014-10-08 22:06 ` Tobias Hoffmann
2014-10-09 8:39 ` Takashi Iwai
2014-10-08 22:49 ` Tobias Hoffmann
2014-10-09 8:31 ` Daniel Mack
2014-10-09 10:13 ` Tobias Hoffmann
2014-10-13 13:30 ` David Henningsson
2014-10-09 8:35 ` Takashi Iwai
2014-10-13 10:58 ` Tobias Hoffmann
2014-10-13 11:38 ` Clemens Ladisch
2014-10-13 12:02 ` Tobias Hoffmann [this message]
2014-10-13 12:09 ` Clemens Ladisch
2014-10-13 12:21 ` Tobias Hoffmann
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