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SubjectRe: ALSA bugs in list [was Re: 2.6.12-rc1-mm1]
Lee Revell <rlrevell@xxxxxxxxxxx> wrote:
>
>/ On Mon, 2005-03-21 at 12:41 -0800, Andrew Morton wrote:/
>/ > From: bugme-daemon@xxxxxxxx/
>/ > Subject: [Bug 4282] ALSA driver in Linux 2.6.11 causes a kernel
panic when loading the EMU10K1 driver/
>/ > /
>/ /
>/ This one is a real mystery. No one can reproduce it./

Not quite true. This bug was current till today in Mandrake's kernel,
but with 2.6.11-5mdk they managed to get rid of it.
The problem is not with loading the driver but when alsactl tries to
store/restore mixer settings.

I have tried again with 2.6.12-rc1-mm1 and it is still there (for
example the Gnome won't start due to this).
Below the oops part from messages.

thanks,
Indrek



Mar 22 21:05:21 bedroom alsa: succeeded
Mar 22 21:05:21 bedroom kernel: Unable to handle kernel NULL pointer
dereference at virtual address 0000000c
Mar 22 21:05:21 bedroom kernel: printing eip:
Mar 22 21:05:21 bedroom kernel: dfa929e8
Mar 22 21:05:21 bedroom kernel: *pde = 00000000
Mar 22 21:05:21 bedroom kernel: Oops: 0000 [#1]
Mar 22 21:05:21 bedroom kernel: SMP
Mar 22 21:05:21 bedroom kernel: Modules linked in: snd_pcm_oss
snd_mixer_oss snd_emu10k1 snd_rawmidi snd_seq_device snd_ac97_codec
snd_pcm snd_timer snd_page_alloc snd_util_mem snd_hwdep snd soundcore
af_packet eth1394 e100 mii ide_cd ohci1394 ieee1394 nls_iso8859_15
nls_cp850 vfat fat intel_agp agpgart hw_random emu10k1_gp gameport
ata_piix libata ehci_hcd uhci_hcd usbcore evdev
Mar 22 21:05:21 bedroom kernel: CPU: 0
Mar 22 21:05:21 bedroom kernel: EIP:
0060:[pg0+527297000/1069851648] Not tainted VLI
Mar 22 21:05:21 bedroom kernel: EIP: 0060:[<dfa929e8>] Not tainted VLI
Mar 22 21:05:21 bedroom kernel: EFLAGS: 00010002 (2.6.12-r1m1)
Mar 22 21:05:21 bedroom kernel: EIP is at
snd_emu10k1_efx_send_routing_put+0x98/0xd5 [snd_emu10k1]
Mar 22 21:05:21 bedroom kernel: eax: 00000000 ebx: dd6cb1a8 ecx:
0000000c edx: 00000004
Mar 22 21:05:21 bedroom kernel: esi: 00000004 edi: 00000000 ebp:
dd6ca000 esp: dce73ed4
Mar 22 21:05:21 bedroom kernel: ds: 007b es: 007b ss: 0068
Mar 22 21:05:21 bedroom kernel: Process alsactl (pid: 5019,
threadinfo=dce72000 task=decaa550)
Mar 22 21:05:21 bedroom kernel: Stack: 00000000 00000000 00000000
dd6ca508 0000000f 00000001 00000246 ddc3c14c
Mar 22 21:05:21 bedroom kernel: ddfe9200 de1a0440 ddc3c000
dfa18e30 ddfe9200 de1a0400 00000000 00000000
Mar 22 21:05:21 bedroom kernel: 00000000 ddfe9200 c01b845c
ddfe9200 fffffff3 decc1180 de1a0400 bf886950
Mar 22 21:05:21 bedroom kernel: Call Trace:
Mar 22 21:05:21 bedroom kernel: [pg0+526798384/1069851648]
snd_ctl_elem_write+0x126/0x177 [snd]
Mar 22 21:05:21 bedroom kernel: [<dfa18e30>]
snd_ctl_elem_write+0x126/0x177 [snd]
Mar 22 21:05:21 bedroom kernel: [copy_from_user+70/126]
copy_from_user+0x46/0x7e
Mar 22 21:05:21 bedroom kernel: [<c01b845c>] copy_from_user+0x46/0x7e
Mar 22 21:05:21 bedroom kernel: [pg0+526798563/1069851648]
snd_ctl_elem_write_user+0x62/0xaf [snd]
Mar 22 21:05:21 bedroom kernel: [<dfa18ee3>]
snd_ctl_elem_write_user+0x62/0xaf [snd]
Mar 22 21:05:21 bedroom kernel: [do_ioctl+154/169] do_ioctl+0x9a/0xa9
Mar 22 21:05:21 bedroom kernel: [<c017352a>] do_ioctl+0x9a/0xa9
Mar 22 21:05:21 bedroom kernel: [vfs_ioctl+101/481] vfs_ioctl+0x65/0x1e1
Mar 22 21:05:21 bedroom kernel: [<c01736df>] vfs_ioctl+0x65/0x1e1
Mar 22 21:05:21 bedroom kernel: [sys_ioctl+69/109] sys_ioctl+0x45/0x6d
Mar 22 21:05:21 bedroom kernel: [<c01738a0>] sys_ioctl+0x45/0x6d
Mar 22 21:05:21 bedroom kernel: [sysenter_past_esp+84/117]
sysenter_past_esp+0x54/0x75
Mar 22 21:05:21 bedroom kernel: [<c01030c7>] sysenter_past_esp+0x54/0x75
Mar 22 21:05:21 bedroom kernel: Code: 24 10 23 4c 90 44 0f b6 04 13 39
c8 74 0b 88 0c 13 c7 44 24 14 01 00 00 00 83 c2 01 39 f2 7c da 8b 44 24
14 85 c0 74 0b 8b 43 38 <8b> 44 b8 0c 85 c0 75 19 8b 44 24 0c 8b 54 24
18 e8 c9 3c 83 e0

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