[uml-user] 合作！
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[uml-user] segfaults inside uml
Hi,
I'm trying to use a vanilla 2.6.15.4 uml kernel with a debian sarge
installation. Most things work fine, but I get a few segfaults with a
few programs, such as host, nslookup or slapd...
For example:
# host user-mode-linux.sourceforge.net
Segmentation fault
# strace host user-mode-linux.sourceforge.net
execve("/usr/bin/host", ["host", "user-mode-linux.sourceforge.net"], [/*
13 vars */]) = 0
set_thread_area({entry_number:-1 -> 0, base_addr:0x4039b2a0,
limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1}) = 123
+++ killed by SIGSEGV +++
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Re: [uml-user] segfaults inside uml
On Wed, Mar 15, 2006 at 02:54:49PM +0100, Nicolas Boullis wrote: > I'm trying to use a vanilla 2.6.15.4 uml kernel with a debian sarge > installation. Most things work fine, but I get a few segfaults with a > few programs, such as host, nslookup or slapd... This is due to the lack of TLS support in the UML kernel. My patchset (at http://user-mode-linux.sf.net/patches.html) and the -bs kernels (at http://user-mode-linux.org/~blaisorblade) have this fixed. Alternatively, you can mv /lib/tls /lib/tls.save. Jeff --- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 ___ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
Re: [uml-user] segfaults inside uml
Jeff Dike wrote: > On Wed, Mar 15, 2006 at 02:54:49PM +0100, Nicolas Boullis wrote: > >>I'm trying to use a vanilla 2.6.15.4 uml kernel with a debian sarge >>installation. Most things work fine, but I get a few segfaults with a >>few programs, such as host, nslookup or slapd... > > > This is due to the lack of TLS support in the UML kernel. My patchset > (at http://user-mode-linux.sf.net/patches.html) and the -bs kernels > (at http://user-mode-linux.org/~blaisorblade) have this fixed. > > Alternatively, you can mv /lib/tls /lib/tls.save. Thanks for your response. Sorry for my message that I mistakenly sent unfinished and without first reading the list's archives. If I read the archives correctly, there will anyway be a problem as long as I use a 2.4 kernel as the host kernel. So I moves /lib/tls away, and it now seems to work fine. Thanks again for the help, and sorry for the noise, Nicolas --- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 ___ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
[uml-user] Where are /proc/mm and /dev/ubd0?
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Hello list,
I'm sure this must be an easy problem, but the solution continues to
escape me.
First, I have not been successful in compiling a kernel with /proc/mm
support. I downloaded source for 2.6.15 as well as the skas3-v8.2 patch
from Blaisorblade's site. When I do a make menuconfig, I can not find
any options for /proc/mm under "Processor Type & Features" as his site
says. I have tried it with both Debian's source for 2.6.15 as well as a
kernel.org source. The host system is running Debian Sarge (AMD64). Is
there an additional patch I am missing or something?
Second, am I correct that the host system needs to have a /dev/ubdX
device? Do I need special udev rules to get it to create the ubdX
device, or should it do it automatically when the proper module is
loaded? When I try to boot a guest Debian Sarge AMD64 image I
downloaded from the web, I am getting the following error:
ubda: unknown partition table
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(98,0)
I am guessing this has to do with the lack of a ubda device on the host
system, since I have mounted the guest system (with mount -o loop...)
and it most definitely does have a ubda device. The guest kernel is
also 2.6.15, with the uml-2.6.15-bs3-tls.patch from Blaisorblade's site
applied. That should be the only patch I need for a guest kernel,
correct?
Can anybody give me a clue-whack as to what I am doing wrong?
TIA,
Jacob
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