Re: 2.6.10-rc2-mm3

From: Paul Blazejowski
Date: Sat Nov 27 2004 - 21:35:49 EST

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On Sat, 27 Nov 2004 17:06:35 -0800, Andrew Morton <akpm@xxxxxxxx> wrote:
> > Nov 27 13:49:23 blaze udev[5385]: creating device node '/dev/sound/mixer'
> > Nov 27 13:49:23 blaze udev[5398]: creating device node '/dev/sound/dsp'
> > Nov 27 13:49:23 blaze udev[5410]: creating device node '/dev/sound/audio'
> > Nov 27 13:49:23 blaze udev[5417]: creating device node '/dev/sound/adsp'
>
> It's trying to create nodes under /dev/sound/
>
> >
> > -- ls /dev output --
> >
> > crw------- 1 root root 116, 33 2004-11-27 13:49 /dev/sound
>
> But your /dev/sound appears to be a character device node, not a directory.
>
> Did you try rm /dev/sound, mkdir /dev/sound?
>
>

Ok, i tried removing /dev/sound char device then making /dev/sound
directory and upon reboot the directory becomes the char device again.
Still no /dev/dsp.

Here is what i have noticed when running the udev startup script
/etc/rc.d/rc.udev on slackware:

When run after startup and udevd is already running it will create the
/dev/sound and friends and symlinks to dsp,mixer,audio under /dev eg.

--> ls -l /dev/sound
total 0
crw-rw--w- 1 root audio 14, 12 2004-11-27 21:13 adsp
crw-rw--w- 1 root audio 14, 4 2004-11-27 21:13 audio
crw-rw--w- 1 root audio 14, 3 2004-11-27 21:13 dsp
crw-rw--w- 1 root audio 14, 0 2004-11-27 21:13 mixer

and

--> ls -l /dev/{dsp,audio,mixer}
lrwxrwxrwx 1 root root 11 2004-11-27 21:13 /dev/audio -> sound/audio
lrwxrwxrwx 1 root root 9 2004-11-27 21:13 /dev/dsp -> sound/dsp
lrwxrwxrwx 1 root root 11 2004-11-27 21:13 /dev/mixer -> sound/mixer

but since /proc must be mounted before udev is run then invoking udev
for the second time breaks /proc's permissions thus this happens:

--> ut2004
libGL error: failed to open DRM: Operation not permitted

and dmesg prints:

scheduling while atomic: ut2004-bin/0x00000001/6112
[<c033b9b8>] schedule+0x4f8/0x500
[<c033bfe3>] schedule_timeout+0x63/0xc0
[<c0123ce0>] process_timeout+0x0/0x10
[<c01240bf>] msleep+0x2f/0x40
[<f8ba102f>] snd_intel8x0_setup_pcm_out+0xbf/0x150 [snd_intel8x0]
[<f8ba114c>] snd_intel8x0_pcm_prepare+0x8c/0xb0 [snd_intel8x0]
[<f8bfda84>] snd_pcm_do_prepare+0x14/0x40 [snd_pcm]
[<c013d615>] __alloc_pages+0x235/0x3e0
[<f8bfcdd8>] snd_pcm_action_single+0x38/0x80 [snd_pcm]
[<f8bfcfd0>] snd_pcm_action_nonatomic+0x80/0x90 [snd_pcm]
[<f8bfdb37>] snd_pcm_prepare+0x57/0x80 [snd_pcm]
[<f8c001e2>] snd_pcm_playback_ioctl1+0x52/0x320 [snd_pcm]
[<f8d3bae9>] snd_pcm_oss_poll+0x49/0x1a0 [snd_pcm_oss]
[<c016be5a>] poll_freewait+0x3a/0x50
[<f8c00868>] snd_pcm_kernel_playback_ioctl+0x38/0x50 [snd_pcm]
[<f8d39026>] snd_pcm_oss_prepare+0x26/0x60 [snd_pcm_oss]
[<f8d3909d>] snd_pcm_oss_make_ready+0x3d/0x60 [snd_pcm_oss]
[<f8d3958d>] snd_pcm_oss_write1+0x3d/0x210 [snd_pcm_oss]
[<f8d3b9d0>] snd_pcm_oss_write+0x40/0x60 [snd_pcm_oss]
[<f8d3b990>] snd_pcm_oss_write+0x0/0x60 [snd_pcm_oss]
[<c01589db>] vfs_write+0xbb/0x160
[<c0158b51>] sys_write+0x51/0x80
[<c0103133>] syscall_call+0x7/0xb
scheduling while atomic: ut2004-bin/0x00000001/6101
[<c033b9b8>] schedule+0x4f8/0x500
[<c033bfe3>] schedule_timeout+0x63/0xc0
[<c0123ce0>] process_timeout+0x0/0x10
[<c01240bf>] msleep+0x2f/0x40
[<f8ba102f>] snd_intel8x0_setup_pcm_out+0xbf/0x150 [snd_intel8x0]
[<f8ba114c>] snd_intel8x0_pcm_prepare+0x8c/0xb0 [snd_intel8x0]
[<f8bfda84>] snd_pcm_do_prepare+0x14/0x40 [snd_pcm]
[<f8bfcdd8>] snd_pcm_action_single+0x38/0x80 [snd_pcm]
[<f8bfcfd0>] snd_pcm_action_nonatomic+0x80/0x90 [snd_pcm]
[<f8bfdb37>] snd_pcm_prepare+0x57/0x80 [snd_pcm]
[<f8c001e2>] snd_pcm_playback_ioctl1+0x52/0x320 [snd_pcm]
[<f8bfe0b0>] snd_pcm_drop+0x70/0xf0 [snd_pcm]
[<f8c00868>] snd_pcm_kernel_playback_ioctl+0x38/0x50 [snd_pcm]
[<f8d39026>] snd_pcm_oss_prepare+0x26/0x60 [snd_pcm_oss]
[<f8d3909d>] snd_pcm_oss_make_ready+0x3d/0x60 [snd_pcm_oss]
[<f8d39be2>] snd_pcm_oss_sync+0x32/0x290 [snd_pcm_oss]
[<f8d399fd>] snd_pcm_oss_reset+0x2d/0x70 [snd_pcm_oss]
[<f8d3b31d>] snd_pcm_oss_ioctl+0xbd/0x710 [snd_pcm_oss]
[<c0102529>] restore_sigcontext+0x119/0x140
[<c016b6eb>] sys_ioctl+0xbb/0x250
[<c0103133>] syscall_call+0x7/0xb
scheduling while atomic: ut2004-bin/0x00000001/6101
[<c033b9b8>] schedule+0x4f8/0x500
[<c033bfe3>] schedule_timeout+0x63/0xc0
[<c0123ce0>] process_timeout+0x0/0x10
[<c01240bf>] msleep+0x2f/0x40
[<f8ba102f>] snd_intel8x0_setup_pcm_out+0xbf/0x150 [snd_intel8x0]
[<f8ba114c>] snd_intel8x0_pcm_prepare+0x8c/0xb0 [snd_intel8x0]
[<f8bfda84>] snd_pcm_do_prepare+0x14/0x40 [snd_pcm]
[<f8bfcdd8>] snd_pcm_action_single+0x38/0x80 [snd_pcm]
[<f8bfcfd0>] snd_pcm_action_nonatomic+0x80/0x90 [snd_pcm]
[<f8bfdb37>] snd_pcm_prepare+0x57/0x80 [snd_pcm]
[<f8c001e2>] snd_pcm_playback_ioctl1+0x52/0x320 [snd_pcm]
[<f8c001e2>] snd_pcm_playback_ioctl1+0x52/0x320 [snd_pcm]
[<f8c00868>] snd_pcm_kernel_playback_ioctl+0x38/0x50 [snd_pcm]
[<f8d39026>] snd_pcm_oss_prepare+0x26/0x60 [snd_pcm_oss]
[<f8d3909d>] snd_pcm_oss_make_ready+0x3d/0x60 [snd_pcm_oss]
[<f8d39be2>] snd_pcm_oss_sync+0x32/0x290 [snd_pcm_oss]
[<f8d3b1c1>] snd_pcm_oss_release+0x21/0xc0 [snd_pcm_oss]
[<c0159935>] __fput+0x135/0x150
[<c0157f39>] filp_close+0x59/0x90
[<c0157fd1>] sys_close+0x61/0xa0
[<c0103133>] syscall_call+0x7/0xb

For the record the udev.permissons has these:

# audio devices
dsp*:root:audio:0662
audio*:root:audio:0662
midi*:root:audio:0662
mixer*:root:audio:0666
sequencer*:root:audio:0662
sound/*:root:audio:0662
snd/control*:root:audio:0666
snd/midi*:root:audio:0666
snd/pcm*p:root:audio:0666
snd/seq:root:audio:0666
snd/timer:root:audio:0666
snd/hw*:root:audio:0662
snd/pcm*c:root:audio:0662
beep:root:audio:0664
admm*:root:audio:0662
adsp*:root:audio:0662
aload*:root:audio:0662
amidi*:root:audio:0662
dmfm*:root:audio:0662
dmmidi*:root:audio:0662
sndstat:root:audio:0662

udev.rules has:

# ALSA devices
KERNEL="controlC[0-9]*", NAME="snd/%k"
KERNEL="hw[CD0-9]*", NAME="snd/%k"
KERNEL="pcm[CD0-9cp]*", NAME="snd/%k"
KERNEL="midiC[D0-9]*", NAME="snd/%k"
KERNEL="timer", NAME="snd/%k"
KERNEL="seq", NAME="snd/%k"

and

# sound devices
KERNEL="adsp", NAME="sound/%k", SYMLINK="%k"
KERNEL="adsp[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="audio", NAME="sound/%k", SYMLINK="%k"
KERNEL="audio[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="dsp", NAME="sound/%k", SYMLINK="%k"
KERNEL="dsp[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="mixer", NAME="sound/%k", SYMLINK="%k"
KERNEL="mixer[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="sequencer", NAME="sound/%k", SYMLINK="%k"
KERNEL="sequencer[0-9]*", NAME="sound/%k", SYMLINK="%k"

Paul
--
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Next message: Michael Frank: "[PATCH 2.6.9] KDB: Fix compile problem when CONFIG_KPROBES and CONFIG_KDB set"
Previous message: Adrian Bunk: "{un,}register_key_type are unused"
In reply to: J.A. Magallon: "Re: 2.6.10-rc2-mm3"
Next in thread: J.A. Magallon: "Re: 2.6.10-rc2-mm3"
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