From: "\"Timo T.Hyrsylä\"" <timo.hyrsyla@cc-systems.com>
To: alsa-devel@alsa-project.org
Subject: Bad page state in process 'rmmod' cs4281
Date: Mon, 09 Mar 2009 10:32:02 +0200 [thread overview]
Message-ID: <49B4D402.4050509@cc-systems.com> (raw)
Trying to make Alsa work on our embedded arm system with ixdp425 and CS4281.
kernel is 2.6.20.3 and the Alsas (driver+lib+utils) latest 1.0.19
Other than the two below errors, the system seems to work ok.
When removing the snd_cs4281 module, dmesg reports multiple errors about
bad page
<0>Bad page state in process 'rmmod'
<0>page:c4007300 flags:0x00004000 mapping:00000000 mapcount:0 count:0
<0>Trying to fix it up, but a reboot is needed
<0>Backtrace:
<0>Bad page state in process 'rmmod'
<0>page:c4007320 flags:0x00004000 mapping:00000000 mapcount:0 count:0
<0>Trying to fix it up, but a reboot is needed
<0>Backtrace:
I've managed to track down the error upto dma_free_coherent.
snd_pcm_free > snd_pcm_lib_preallocate_free_for_all >
snd_pcm_lib_preallocate_free > snd_pcm_lib_preallocate_dma_free >
snd_dma_free_pages > snd_free_dev_pages > dma_free_coherent
Another issue, possibly related, is that when running aplay with --mmap
it will crash with:
Internal error: Oops: f3 [#1]
PC is at snd_pcm_mmap_data_nopage+0x10c/0x148 [snd_pcm]
LR is at __handle_mm_fault+0x16c/0x8ac
any helping ideas?
--
Timo TH.
next reply other threads:[~2009-03-09 8:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-09 8:32 "Timo T.Hyrsylä" [this message]
2009-03-09 11:24 ` Bad page state in process 'rmmod' cs4281 Takashi Iwai
[not found] ` <s5hsklhn0ou.wl%tiwai@suse.de>
2009-03-18 9:01 ` "Timo T.Hyrsylä"
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