Hi!
I'm trying to get a soundcard running in a xen 3.0.2 domU, but every time
an application tries to read or write /dev/dsp I get a ENOMEM (Cannot
allocate memory).
Changing mixer settings (with aumix) works fine...
Here's some debugging stuff:
grub config (menu.lst):
title kernel 2.6.16-xen0
root (hd0,2)
#512 MB fuer dom0
kernel /xen.gz dom0_mem=524288
module /vmlinuz-2.6.16-xen0 root=/dev/hda5 ro console=tty0
max_loop=128 pciback.hide=(0000:00:05.0)
savedefault
boot
config of the domU:
name = "vm02"
memory = 128
pci = [ '0000:00:05.0' ]
disk = [
'file:/data/xen_vserver/vm02.img,hda1,w','file:/data/xen_vserver/vm02-swap.img,
kernel = "/boot/vmlinuz-2.6.16-xenU"
vif = [ '' ]
dhcp="off"
ip="1.2.3.4"
netmask="255.255.255.240"
gateway="1.2.3.5"
hostname="vm02.foo.bar"
root = "/dev/hda1 ro"
extra = "4"
vm02:~# lsmod
Module Size Used by
snd_pcm_oss 47648 0
snd_mixer_oss 16000 1 snd_pcm_oss
snd_cmipci 29632 0
snd_pcm 77060 2 snd_pcm_oss,snd_cmipci
snd_page_alloc 8712 1 snd_pcm
snd_opl3_lib 8704 1 snd_cmipci
snd_timer 20548 2 snd_pcm,snd_opl3_lib
snd_hwdep 7492 1 snd_opl3_lib
snd_mpu401_uart 6528 1 snd_cmipci
snd_rawmidi 20640 1 snd_mpu401_uart
snd 44832 9
snd_pcm_oss,snd_mixer_oss,snd_cmipci,snd_pcm,snd_opl3_lib,snd_timer,snd_hwdep,snd_mpu401_uart,snd_rawmidi
soundcore 7584 1 snd
md5 4416 1
ipv6 242688 12
vm02:~# lspci
0000:00:05.0 Multimedia audio controller: C-Media Electronics Inc CM8738
(rev 10)
vm02:~# cat /dev/urandom > /dev/dsp
cat: write error: Cannot allocate memory
vm02:~# cat /dev/dsp
cat: /dev/dsp: Cannot allocate memory
vm02:~# strace cat /dev/dsp
execve("/bin/cat", ["cat", "/dev/dsp"], [/* 14 vars */]) = 0
uname({sys="Linux", node="vm02", ...}) = 0
brk(0) = 0x804d000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7f5a000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7f59000
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=13542, ...}) = 0
mmap2(NULL, 13542, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f55000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220T\1"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1177116, ...}) = 0
mmap2(NULL, 1186964, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7e33000
mmap2(0xb7f4b000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x117) = 0xb7f4b000
mmap2(0xb7f53000, 7316, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f53000
close(3) = 0
mprotect(0xb7f4b000, 20480, PROT_READ) = 0
munmap(0xb7f55000, 13542) = 0
brk(0) = 0x804d000
brk(0x806e000) = 0x806e000
fstat64(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
open("/dev/dsp", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFCHR|0660, st_rdev=makedev(14, 3), ...}) = 0
read(3, 0x804d080, 4096) = -1 ENOMEM (Cannot allocate memory)
write(2, "cat: ", 5cat: ) = 5
write(2, "/dev/dsp", 8/dev/dsp) = 8
write(2, ": Cannot allocate memory", 24: Cannot allocate memory) = 24
write(2, "\n", 1
) = 1
close(3) = 0
close(1) = 0
exit_group(1) = ?
Process 4135 detached
vm02:~# strace cat /dev/urandom > /dev/dsp
execve("/bin/cat", ["cat", "/dev/urandom"], [/* 14 vars */]) = 0
uname({sys="Linux", node="vm02", ...}) = 0
brk(0) = 0x804d000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7f98000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7f97000
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=13542, ...}) = 0
mmap2(NULL, 13542, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f93000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220T\1"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1177116, ...}) = 0
mmap2(NULL, 1186964, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7e71000
mmap2(0xb7f89000, 32768, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x117) = 0xb7f89000
mmap2(0xb7f91000, 7316, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f91000
close(3) = 0
mprotect(0xb7f89000, 20480, PROT_READ) = 0
munmap(0xb7f93000, 13542) = 0
brk(0) = 0x804d000
brk(0x806e000) = 0x806e000
fstat64(1, {st_mode=S_IFCHR|0660, st_rdev=makedev(14, 3), ...}) = 0
open("/dev/urandom", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFCHR|0444, st_rdev=makedev(1, 9), ...}) = 0
read(3, "5U\232b\241\231\262\7o\346\4\'tC31\205\256\30\305\"\1\21"..., 4096)
= 4096
write(1, "5U\232b\241\231\262\7o\346\4\'tC31\205\256\30\305\"\1\21"...,
4096) = -1 ENOMEM (Cannot allocate memory)
write(2, "cat: ", 5cat: ) = 5
write(2, "write error", 11write error) = 11
write(2, ": Cannot allocate memory", 24: Cannot allocate memory) = 24
write(2, "\n", 1
) = 1
exit_group(1) = ?
Process 4138 detached
I'm grateful for any help...
Regards, Tobias
--
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