On Monday 04 April 2005 01:57, Henrique wrote: > Dear UML developers, > I use UML for about two years, especially the version linux-2.4.24um-3 > (uml-patch-2.4.24-3.bz2), and is quite stable.
> Now I've compiled the last patch from SourceForge (uml-patch-2.4.27-1) > and sometimes (sporadically, maybe 1 out of 50 tries) my UMLs won't start. > Today I've pointed out this. > I am affraid this is not reproducible, but the thing is that with 2.4.24 > based guests, I've never observed this problem! > In this case I had only one UML guest running on my host, and I believe > at least 48 Mbyte of RAM free. > > Maybe the UML patch uml-patch-2.4.27-1 is not o.k. ? Such a crash is surely due to a kernel bug. Possibly the patch is not very stable, ok. 2.4.26-3um is probably better than 2.4.27-1um. Otherwise, you can try 2.4.27-bs1 or -bs2 (when I'll release it). However, the reality in my experience is that the 2.6 kernels, especially 2.6.11-bs1 (from my home page), are in most cases more stable than 2.4 ones. > MY HOST Kernel: 2.4.26skas (awsomely stable!) > My UML: last from Source-forge, patched Kernel linux-2.4.27 > uml-patch-2.4.27-1.bz2 Nov 10 12:18 > Command-line: > /usr/local/bin/linux-2.4.27um-1 umid=zip devfs=nomount con=pts > con0=fd:0,fd:1 mem=48M > > > > Checking for the skas3 patch in the host...found > Checking for /proc/mm...found > Checking PROT_EXEC mmap in /tmp...OK > Checking for /dev/anon on the host...Not available (open failed with > errno 2) > Linux version 2.4.27-1um ([EMAIL PROTECTED]) (gcc version 2.96 20000731 (Red > Hat Linux 7.1 2.96-98)) #1 Wed Mar 23 19:47:39 WET 2005 > On node 0 totalpages: 12288 > zone(0): 12288 pages. > zone(1): 0 pages. > zone(2): 0 pages. > Kernel command line: ubd0=/mnt/hdc1/fs_deb3B_4_t.ex2 mem=48M > eth0=tuntap,tap3 if=10.1.7.3 devfs=nomount con=pts con0=fd:0,fd:1 > root=/dev/ubd0 > Calibrating delay loop... 298.18 BogoMIPS > Memory: 44948k available > Dentry cache hash table entries: 8192 (order: 4, 65536 bytes) > Inode cache hash table entries: 4096 (order: 3, 32768 bytes) > Mount cache hash table entries: 512 (order: 0, 4096 bytes) > Buffer cache hash table entries: 1024 (order: 0, 4096 bytes) > Page-cache hash table entries: 16384 (order: 4, 65536 bytes) > Checking for host processor cmov support...Yes > Checking for host processor xmm support...No > Checking that ptrace can change system call numbers...OK > Checking syscall emulation patch for ptrace...missing > Kernel panic: Segfault with no mm > In idle task - not syncing > <6>SysRq : Show Regs > Checking syscall emulation patch for ptrace...missing This is the point where it stopped above. So maybe it's related to the test below. > Checking that host ptys support output SIGIO...Yes > Checking that host ptys support SIGIO on close...No, enabling workaround -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
