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[uml-user] Lock-up while configuring eth0 in client and other problems
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From: Wil C. <wc...@na...> - 2001-07-04 18:56:11
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I'm getting a lock-up when I try to configure eth0 in a UML client.
Both host and client are using kernel 2.4.5 and UML patch 0.42 from 26
May. (BTW, is there any place in the source I can't find this version
number? I cursorily scanned a few files, but didn't find anything.
Perhaps --version should report this?)
The systems in question are running a now somewhat out of date
distro that I've been developing; the host itself it still fairly
Slackware 7 based whereas the client is LNXS 0.2.0-based. GCC on
host is 2.92.2; binutils is 2.10. It's possible, of course, that
my net-tools is too old; however, it's the same version (1.54;
ifconfig 1.39) as my Immunix 6.2-based system which is working with
2.4 just fine.
The host has ethertap configured according to web site; /dev/tap?
exists, etc. Host tap0 is 192.168.1.32; UML client eth0 should be
192.168.1.33.
Host:
# ifconfig tap0
tap0 Link encap:Ethernet HWaddr FE:FD:00:00:00:00 =20
inet addr:192.168.1.32 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1484 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0=20
Interrupt:5=20
# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Ifa=
ce
192.168.1.33 192.168.1.32 255.255.255.255 UGH 40 0 0 tap0
192.168.1.0 0.0.0.0 255.255.255.0 U 40 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 40 0 0 lo
0.0.0.0 192.168.1.10 0.0.0.0 UG 40 0 0 eth0
I start the UML client up as:
linux eth0=3Dethertap,tap0,,192.168.1.33 ubd0=3Droot_fs mem=3D32M
I ran a strace while trying to bring up eth0, and here's the output:
execve("/sbin/ifconfig", ["ifconfig", "eth0", "192.168.1.33", "up"],
[/* 9 vars */]) =3D 0
brk(0) =3D 0x8050c50
mmap() =3D 0x40018000
open("/etc/ld.so.preload", O_RDONLY) =3D -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) =3D 3
fstat(3, {...}) =3D 0
mmap() =3D 0x40019000
close(3) =3D 0
open("/lib/libc.so.6", O_RDONLY) =3D 3
fstat(3, {...}) =3D 0
read(3, 0xbf7fe7bc, 4096) =3D 4096
mmap() =3D 0x4001b000
mprotect(0x40128000, 27772, PROT_NONE) =3D 0
mmap() =3D 0x40128000
mmap() =3D 0x4012c000
close(3) =3D 0
mprotect(0x4001b000, 1101824, PROT_READ|PROT_WRITE) =3D 0
mprotect(0x4001b000, 1101824, PROT_READ|PROT_EXEC) =3D 0
munmap(0x40019000, 4555) =3D 0
personality(PER_LINUX) =3D 0
getpid() =3D 78
uname({...}) =3D 0
access("/proc/net", R_OK) =3D 0
access("/proc/net/unix", R_OK) =3D 0
socket(PF_UNSPEC, 0 /* SOCK_??? */, 0) =3D 3
socket(PF_UNSPEC, 0 /* SOCK_??? */, 0) =3D 4
access("/proc/net/ax25", R_OK) =3D -1 ENOENT (No such file or
directory)
access("/proc/net/nr", R_OK) =3D -1 ENOENT (No such file or
directory)
access("/proc/net/ipx", R_OK) =3D -1 ENOENT (No such file or
directory)
access("/proc/net/appletalk", R_OK) =3D -1 ENOENT (No such file or
directory)
access("/proc/net/ax25", R_OK) =3D -1 ENOENT (No such file or
directory)
access("/proc/net/nr", R_OK) =3D -1 ENOENT (No such file or
directory)
access("/proc/net/ipx", R_OK) =3D -1 ENOENT (No such file or
directory)
access("/proc/net/appletalk", R_OK) =3D -1 ENOENT (No such file or
directory)
ioctl(4, SIOCSIFADDR, 0xbf7ffd4c) =3D 0
ioctl(4, SIOCGIFFLAGS, 0xbf7ffccc) =3D 0
ioctl(4, SIOCSIFFLAGS
There are also cryptic errors reported in dmesg which may or may not
be unrelated:
do_io - write returned -1 : errno =3D 9
Attached also is my kernel config file, in case I might have missed
something.
Wil
--=20
W. Reilly Cooley wc...@na...
Naked Ape Consulting http://nakedape.cc
LNXS: Get 0.2.0-devel at http://sourceforge.net/projects/lnxs/
irc.openprojects.net #lnxs
When I hear a man applauded by the mob I always feel a pang of pity
for him. All he has to do to be hissed is to live long enough.
-- H.L. Mencken, "Minority Report"
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