Trying 2.6.12, 2.6.12.1, 2.6.12.1-git5 and gentoo-sources-2.6.12-r1, the usermode linux is broken, using the same .config I can compile the executable linux, but after start I got: tfoerste@n22 /opt/uml $ start_uml.sh Checking for /proc/mm...not found Checking PROT_EXEC mmap in /tmp...OK Kernel virtual memory size shrunk to 243269632 bytes tracing thread pid = 18316 Nothing more and there is a process eating cpu time: tfoerste@n22 /opt/uml $ ps aux | grep ubda tfoerste 18128 98.4 0.5 262232 5432 pts/1 R 11:42 42:34 /opt/uml/linux-2.6.12-gentoo-r1/linux (toralf) [(idle thread)] ubda=/opt/uml/root_fs ubdb=/opt/uml/swap_fs ubdc= eth0=tuntap,,,192.168.0.254 mem=256M umid=toralf instead, UML with gentoo-sources-2.6.11-r11 runs fine. Reproducible: Always Steps to Reproduce: 1. 2. 3.
Please see if you can reproduce with usermode-sources-2.6.12
Te download failed :-( : n22 usermode-sources # emerge -a usermode-sources These are the packages that I would merge, in order: Calculating dependencies ...done! [ebuild N ] sys-kernel/usermode-sources-2.6.12 Do you want me to merge these packages? [Yes/No] >>> emerge (1 of 1) sys-kernel/usermode-sources-2.6.12 to / >>> Resuming download... >>> Downloading ftp://pandemonium.tiscali.de/pub/gentoo/distfiles/uml-2.6.12-bs1.patch.bz2 --13:22:58-- ftp://pandemonium.tiscali.de/pub/gentoo/distfiles/uml-2.6.12-bs1.patch.bz2 => `/usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2' Resolving pandemonium.tiscali.de... 195.52.219.14 Connecting to pandemonium.tiscali.de[195.52.219.14]:21... connected. Logging in as anonymous ... Logged in! ==> SYST ... done. ==> PWD ... done. ==> TYPE I ... done. ==> CWD /pub/gentoo/distfiles ... done. ==> SIZE uml-2.6.12-bs1.patch.bz2 ... done. ==> PASV ... done. ==> REST 15,884 ... done. ==> RETR uml-2.6.12-bs1.patch.bz2 ... No such file `uml-2.6.12-bs1.patch.bz2'. >>> Resuming download... >>> Downloading ftp://mirror.nutsmaas.nl/gentoo/distfiles/uml-2.6.12-bs1.patch.bz2 --13:22:59-- ftp://mirror.nutsmaas.nl/gentoo/distfiles/uml-2.6.12-bs1.patch.bz2 => `/usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2' Resolving mirror.nutsmaas.nl... 212.54.48.26 Connecting to mirror.nutsmaas.nl[212.54.48.26]:21... connected. Logging in as anonymous ... Logged in! ==> SYST ... done. ==> PWD ... done. ==> TYPE I ... done. ==> CWD /gentoo/distfiles ... done. ==> SIZE uml-2.6.12-bs1.patch.bz2 ... done. ==> PASV ... done. ==> REST 15,884 ... done. ==> RETR uml-2.6.12-bs1.patch.bz2 ... No such file `uml-2.6.12-bs1.patch.bz2'. >>> Resuming download... >>> Downloading http://mirrors.sec.informatik.tu-darmstadt.de/gentoo/distfiles/uml-2.6.12-bs1.patch.bz2 --13:22:59-- http://mirrors.sec.informatik.tu-darmstadt.de/gentoo/distfiles/uml-2.6.12-bs1.patch.bz2 => `/usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2' Resolving mirrors.sec.informatik.tu-darmstadt.de... 130.83.164.194 Connecting to mirrors.sec.informatik.tu-darmstadt.de[130.83.164.194]:80... connected. HTTP request sent, awaiting response... 404 Not Found Continued download failed on this file, which conflicts with `-c'. Refusing to truncate existing file `/usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2'. >>> Resuming download... >>> Downloading ftp://mir1.ovh.net/gentoo-distfiles/distfiles/uml-2.6.12-bs1.patch.bz2 --13:23:00-- ftp://mir1.ovh.net/gentoo-distfiles/distfiles/uml-2.6.12-bs1.patch.bz2 => `/usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2' Resolving mir1.ovh.net... 213.186.33.37 Connecting to mir1.ovh.net[213.186.33.37]:21... connected. Logging in as anonymous ... Logged in! ==> SYST ... done. ==> PWD ... done. ==> TYPE I ... done. ==> CWD /gentoo-distfiles/distfiles ... done. ==> SIZE uml-2.6.12-bs1.patch.bz2 ... done. ==> PASV ... done. ==> REST 15,884 ... done. ==> RETR uml-2.6.12-bs1.patch.bz2 ... No such file `uml-2.6.12-bs1.patch.bz2'. >>> Resuming download... >>> Downloading http://www.user-mode-linux.org/~blaisorblade/patches/guest/uml-2.6.12-bs1/uml-2.6.12-bs1.patch.bz2 --13:23:00-- http://www.user-mode-linux.org/%7Eblaisorblade/patches/guest/uml-2.6.12-bs1/uml-2.6.12-bs1.patch.bz2 => `/usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2' Resolving www.user-mode-linux.org... 66.59.111.166 Connecting to www.user-mode-linux.org[66.59.111.166]:80... connected. HTTP request sent, awaiting response... 416 Requested Range Not Satisfiable The file is already fully retrieved; nothing to do. !!! Couldn't download uml-2.6.12-bs1.patch.bz2. Aborting.
Ah, the md5sum differs: n22 /usr/portage/sys-kernel/usermode-sources/files # grep patch.bz2 digest-usermode-sources-2.6.12 MD5 8f698b9cd743c0f6e68949bedc5612b2 uml-2.6.12-bs1.patch.bz2 15907 n22 /usr/portage/sys-kernel/usermode-sources/files # md5sum /usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2 46faf2dfc91b68f7154a5afd317423be /usr/portage/distfiles/uml-2.6.12-bs1.patch.bz2
Strange. Fixed that in cvs - please try again later :)
I can start the UML image and it works but during startup I got: tfoerste@n22 ~ $ start_uml.sh Checking for /proc/mm...not found Checking PROT_EXEC mmap in /tmp...OK Kernel virtual memory size shrunk to 243269632 bytes tracing thread pid = 1359 Linux version 2.6.11-gentoo-r11 (tfoerste@n22) (gcc version 3.3.5-20050130 (Gentoo 3.3.5.20050130-r1, ssp-3.3.5.20050130-1, pie-8.7.7.1)) #2 Thu Jun 30 13:47:36 CEST 2005 Built 1 zonelists Kernel command line: ubda=/opt/uml/root_fs ubdb=/opt/uml/swap_fs eth0=tuntap,,,192.168.0.254 mem=256M root=98:0 PID hash table entries: 2048 (order: 11, 32768 bytes) Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) Memory: 255744k available ... tun: Universal TUN/TAP device driver, 1.6 tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com> NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP established hash table entries: 2048 (order: 2, 16384 bytes) TCP bind hash table entries: 2048 (order: 1, 8192 bytes) TCP: Hash tables configured (established 2048 bind 2048) NET: Registered protocol family 1 NET: Registered protocol family 17 Initialized stdio console driver Console initialized on /dev/tty0 Initializing software serial port version 1 Failed to open 'root_fs', errno = 2 VFS: Cannot open root device "98:0" or unknown-block(98,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0) EIP: 0073:[<a01f7382>] CPU: 0 Not tainted ESP: 007b:a08a66b4 EFLAGS: 00200286 Not tainted EAX: 00000000 EBX: 00000001 ECX: a08a6754 EDX: a08a66d4 ESI: 00000008 EDI: 0000000a EBP: a08a66bc DS: 007b ES: 007b a08afb20: [<a0047f0d>] notifier_call_chain+0x2d/0x50 a08afb30: [<a015a526>] bust_spinlocks+0x46/0x50 a08afb40: [<a0035381>] panic+0x71/0x120 a08afb60: [<a0002a39>] mount_block_root+0xb9/0x120 a08afbb0: [<a0002c1f>] mount_root+0x5f/0x70 a08afbd0: [<a0002c71>] prepare_namespace+0x41/0x120 a08afbe4: [<a00111e0>] init+0x0/0x110 a08afbe8: [<a00111e0>] init+0x0/0x110 a08afbf0: [<a00112e5>] init+0x105/0x110 a08afc10: [<a0014dc8>] run_kernel_thread+0x78/0x80 a08afc28: [<a00111e0>] init+0x0/0x110 a08afc38: [<a0014d90>] run_kernel_thread+0x40/0x80 a08afcd4: [<a00111e0>] init+0x0/0x110 a08afce0: [<a001be3b>] new_thread_handler+0x15b/0x190 a08afce4: [<a00111e0>] init+0x0/0x110 a08afd20: [<a01f7328>] __restore+0x0/0x8 a08afd60: [<a01f7382>] __sigprocmask+0x22/0x50 Checking for /proc/mm...not found Checking PROT_EXEC mmap in /tmp...OK Kernel virtual memory size shrunk to 243269632 bytes tracing thread pid = 13407 ... BTW from where I got the part "root=98:0", because this is not part of my command line ?
I'm confused, and my lack of UML knowledge doesn't help. In the original bug report, you were running 2.6.12 as the host OS, booting 2.6.11-gentoo-r11 as the guest OS... right? In comment #5, you were running usermode-sources-2.6.12 as the host OS, booting 2.6.11-gentoo-r11 as the guest, right..? My understanding is that usermode-sources is supposed to be the guest kernel. So it might be worth trying that as the guest too.
(In reply to comment #6) > In the original bug report, you were running 2.6.12 as the host OS, booting > 2.6.11-gentoo-r11 as the guest OS... right? No, in the original bug report I booted my notebook with gentoo-sources-2.6.11-gentoo-r11 and tried to use as guest kernel one of the gentoo-sources-2.6.12-* sources fron kernel.org > In comment #5, you were running usermode-sources-2.6.12 as the host OS, booting > 2.6.11-gentoo-r11 as the guest, right..? No, I switched in the mean time to gentoo-sources-2.6.12-gentoo-r4 for my host and used usermode-sources-2.6.12 as the guest kernel. But anyway, the usermode-sources-2.6.12 works, currently I am ignoring the kernel panic.
Created attachment 62882 [details] output on the command line using gentoo-sources-2.6.11-r1 as the guest kernel host kernel is gentoo-sources-2.6.12-r4
Created attachment 62883 [details] output on hte command line using usermode-sources-2.6.12 as the guest kernel host kernel is gentoo-sources-2.6.12-r4
BlaisorBlade: Is the oops here anything to worry about?
Thanks for CC'ing me, however I'd say there's nothing to worry about, if my hypoteses are correct. In the attachment you gave, there are two consecutive outputs. The first says that the command line is empty, the second works ok and has a full command line. When the command line is empty, UML can't start because it does not find a root filesystem image to work with. And that's exactly what the message says, so you have simply a bug with start_uml.sh it seems, even if that does not happen with the other kernel (possibly the script gets somehow confused with the different path name, or the different kernel version it gets with vmlinux --version). In the comment, instead, I see the crash with the following command line: Kernel command line: ubda=/opt/uml/root_fs ubdb=/opt/uml/swap_fs eth0=tuntap,,,192.168.0.254 mem=256M root=98:0 Which should indeed work. Is this some confusion on your part or you've really got this?
(In reply to comment #11) > so you have simply a bug with start_uml.sh it seems, even if that does not > happen with the other kernel (possibly the script gets somehow confused with > the different path name, or the different kernel version it gets with vmlinux Ough, there was a bug in a - so long time fine running "ItCannotHaveABug"-script - your right, sorry again. In summary : the usermode-sources -2.6.12 runs fine - as I can see.
