>> On fully up to date Fedora Core 6 x86_64, the kernel does display >> something before crashing: >> # uname -a >> Linux localhost.localdomain 2.6.18-1.2869.fc6 #1 SMP Wed Dec 20 14:51:34 >> EST 2006 x86_64 x86_64 x86_64 GNU/Linux >> # ./kernel32-2.6.19.2 >> Checking that ptrace can change system call numbers...OK >> Checking syscall emulation patch for ptrace...missing >> Checking for tmpfs mount on /dev/shm...OK >> Checking PROT_EXEC mmap in /dev/shm/...OK >> Checking for the skas3 patch in the host: >> - /proc/mm...not found >> - PTRACE_FAULTINFO...not found >> - PTRACE_LDT...not found >> UML running in SKAS0 mode >> >> [EMAIL PROTECTED] home]# >> >> This is 100% repeatable. Plain Fedora. >> Many users will have a similar setup and will just give up on UML. >> So I as I said before, UML is currently unusable for most people out >> there running fairly recent systems. > I have a 2.6.19, vanila kernel on top of redhat4, host. There is one major difference in this case, redhat4 uses glibc 2.3 whereas fc6 (and gentoo-current) use glibc 2.4 A lot of the problems that I am reporting started when glibc was upgraded (sorry I forgot to mention that)
> And any kernel between 2.6.17 - 2.6.20-rc5 x86_64 for guests. > For my iSCSI tests they all run well. > At the very beginning, I had bad crashes and I solved it with plain gdb. > The point for us to use UML, from the begging, was to use gdb on our own > kernel development. > At the end it was very easy to find that I have miss-configured the uml > kernel, when that was fixed every thing > ran well. > > for me I just do > #gdb um/vmlinux (was compiled with -O um) > gdb>run ubd0=/var/opt/FedoraCore5-AMD64-root_fs eth0=tuntap,,,192.168.0.117 > after first trap in gdb > gdb>handle SIGUSR1 pass nostop noprint > from than on its strait gdb, tell me if you need a script for loading symbols > of kernel modules. That would be great, it could go on the wiki too. Thanks Antoine ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
