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From: Daniel Mack <zonque-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: "Artem S. Tashkinov" <t.artem-DVq+YeWbj7cAvxtiuMwx3w@public.gmane.org>
Cc: bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org,
	pavel-+ZI9xUNit7I@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	security-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org,
	stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public.gmane.org
Subject: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website
Date: Sun, 21 Oct 2012 23:00:20 +0200	[thread overview]
Message-ID: <50846264.302@gmail.com> (raw)
In-Reply-To: <1651404200.40745.1350852195790.JavaMail.mail@webmail04>

On 21.10.2012 22:43, Artem S. Tashkinov wrote:
>> Nice. Could you do that again with the patch applied I sent yo some
>> hours ago?
> 
> That patch was of no help - the system has crashed and I couldn't spot relevant
> messages.
> 
> I've no idea what it means.

The sequence of driver callbacks issued on a stream start is

 .open()
 .hw_params()
 .prepare()
 .trigger()

If the ALSA part really causes this issue, the bad things happen either
in any of the driver callback functions or in the core underneath.

The patch I sent returns an error from the hw_params callback, and as
you still see the problem, that means that the crash happens before any
of the USB audio streaming really starts.

Could you try and return -EINVAL from snd_usb_capture_open() please?

If anyone has a better idea on how to debug this, please chime in.


Daniel

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WARNING: multiple messages have this Message-ID (diff)
From: Daniel Mack <zonque@gmail.com>
To: "Artem S. Tashkinov" <t.artem@lycos.com>
Cc: bp@alien8.de, pavel@ucw.cz, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, security@kernel.org,
	linux-media@vger.kernel.org, linux-usb@vger.kernel.org,
	alsa-devel@alsa-project.org, stern@rowland.harvard.edu
Subject: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website
Date: Sun, 21 Oct 2012 23:00:20 +0200	[thread overview]
Message-ID: <50846264.302@gmail.com> (raw)
In-Reply-To: <1651404200.40745.1350852195790.JavaMail.mail@webmail04>

On 21.10.2012 22:43, Artem S. Tashkinov wrote:
>> Nice. Could you do that again with the patch applied I sent yo some
>> hours ago?
> 
> That patch was of no help - the system has crashed and I couldn't spot relevant
> messages.
> 
> I've no idea what it means.

The sequence of driver callbacks issued on a stream start is

 .open()
 .hw_params()
 .prepare()
 .trigger()

If the ALSA part really causes this issue, the bad things happen either
in any of the driver callback functions or in the core underneath.

The patch I sent returns an error from the hw_params callback, and as
you still see the problem, that means that the crash happens before any
of the USB audio streaming really starts.

Could you try and return -EINVAL from snd_usb_capture_open() please?

If anyone has a better idea on how to debug this, please chime in.


Daniel


  reply	other threads:[~2012-10-21 21:00 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-20 12:06 A reliable kernel panic (3.6.2) and system crash when visiting a particular website Artem S. Tashkinov
2012-10-20 16:27 ` Borislav Petkov
2012-10-20 17:41   ` Artem S. Tashkinov
2012-10-20 18:04     ` Borislav Petkov
2012-10-20 20:57       ` Artem S. Tashkinov
2012-10-20 22:00       ` Artem S. Tashkinov
2012-10-20 20:32     ` Pavel Machek
2012-10-20 22:58       ` Borislav Petkov
2012-10-20 23:15         ` Artem S. Tashkinov
2012-10-21  0:24           ` Borislav Petkov
2012-10-21  0:24             ` Borislav Petkov
2012-10-21  1:57             ` Artem S. Tashkinov
2012-10-21 11:08               ` Borislav Petkov
2012-10-21 11:59                 ` Artem S. Tashkinov
2012-10-21 12:03                   ` Daniel Mack
2012-10-21 12:03                     ` Daniel Mack
2012-10-21 12:30                     ` Artem S. Tashkinov
2012-10-21 12:30                       ` Artem S. Tashkinov
2012-10-21 14:21                       ` was: " Daniel Mack
2012-10-21 14:57                         ` Artem S. Tashkinov
2012-10-21 15:22                           ` Daniel Mack
2012-10-21 15:28                             ` Alan Stern
2012-10-21 15:28                               ` Alan Stern
2012-10-21 15:36                               ` Daniel Mack
2012-10-21 12:12                   ` Daniel Mack
2012-10-21 15:23                   ` Re: Re: Re: " Alan Stern
2012-10-21 22:20                     ` A strange Linux 3.6 bug: corrupted page table Artem S. Tashkinov
2012-10-21 17:03                   ` Re: Re: Re: Re: A reliable kernel panic (3.6.2) and system crash when visiting a particular website Borislav Petkov
2012-10-21 19:49                     ` Artem S. Tashkinov
2012-10-21 19:54                       ` Daniel Mack
2012-10-21 20:43                         ` Artem S. Tashkinov
2012-10-21 21:00                           ` Daniel Mack [this message]
2012-10-21 21:00                             ` Daniel Mack
2012-10-21 20:36                       ` Re: Re: Re: Re: " Borislav Petkov
2012-10-22 15:17                       ` Alan Stern
2012-10-22 15:17                         ` Alan Stern
2012-10-22 15:30                         ` Daniel Mack
2012-10-22 15:54                           ` Alan Stern
2012-10-22 15:54                             ` Alan Stern
2012-10-22 17:30                             ` Artem S. Tashkinov
2012-10-22 18:01                               ` Alan Stern
2012-10-22 18:01                                 ` Alan Stern
2012-10-21  2:19           ` Alan Stern
2012-10-21 10:34           ` Daniel Mack
2012-10-21 11:59             ` Daniel Mack
2012-11-03 14:10           ` Christof Meerwald
2012-11-03 14:16             ` Daniel Mack
2012-11-03 14:28               ` Sven-Haegar Koch
2012-11-05 19:13               ` Christof Meerwald
2012-11-07 17:34                 ` Alan Stern
2012-11-07 19:19                   ` Takashi Iwai
2012-11-07 20:37                     ` Alan Stern
2012-11-08  6:48                       ` Takashi Iwai
2012-11-07 20:46                     ` Christof Meerwald
2012-11-07 20:59                     ` Artem S. Tashkinov
2012-11-08  0:42                     ` Daniel Mack
2012-11-08  6:43                       ` Takashi Iwai
2012-11-08  7:31                         ` Daniel Mack
2012-11-08  8:09                           ` Takashi Iwai
2012-11-08 15:55                             ` Alan Stern
2012-11-08 15:58                               ` Takashi Iwai

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