Probably not; You can try downloading a clean root-fs & compile the kernel (with your modules). In any case, it seems that you have broken root-fs (I'm not sure though).
HTH, ~Partha -----Original Message----- From: Prasad Joshi [mailto:[EMAIL PROTECTED] Sent: Friday, March 16, 2007 10:25 PM To: Ramanujam Parthasarathi-A19423 Cc: user-mode-linux-user@lists.sourceforge.net Subject: Re: [uml-user] Received a panic when UML is started. Hey, Is it possible to debug the modules from the pre-built UML? Because, while I was searching I came accross an UML binary for Fedora Core. As I am using Ubuntu will this FC UML work on my machines? And Will I be able to debug the modules which I am wrting? Please reply. Thanks and Regards, Prasad. On 3/16/07, Prasad Joshi <[EMAIL PROTECTED]> wrote: > Hi, > > Thanks for your reply. But, I need UML for debugging the modules which > I am writing. > > Thanks and Regards, > Prasad. > > On 3/16/07, Ramanujam Parthasarathi-A19423 <[EMAIL PROTECTED]> wrote: > > Hi Prasad, > > > > If you are working on UML for the first time, it may be a good idea > > to start with pre-built UML-binary & root-fs. You can then start > > changing/working on different aspects based on ur needs... > > > > HTH, > > ~Partha > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On > > Behalf Of Prasad Joshi > > Sent: Friday, March 16, 2007 9:24 PM > > To: user-mode-linux-user@lists.sourceforge.net > > Subject: [uml-user] Received a panic when UML is started. > > > > Hi All, > > > > I am new to UML and doing it for the first time. When I start the > > UML ./linux it is panicing. I am not getting what I did wrong. > > > > So I am attaching all the steps I did please inform me if any thing > > is missing or if I have done something wrong. > > > > Please help. > > > > Thanks and Regards, > > Prasad. > > > > I am using 2.6.20 kernel on i386 machine and OS installed is Ubuntu. > > > > Steps I did. > > ************ > > make menuconfig ARCH=um > > make ARCH=um > > a large linux executable was created. > > > > Creating and mounting root file system > > --------------------------------------- > > dd if=/dev/zero of=my-root_fs count=1 bs=1k seek=$[2*1024*1024] > > mkreiserfs -f my-root_fs > > > > mount -o loop my-root_fs /mnt > > > > Installing modules in the root file system > > ------------------------------------------- > > make modules_install > > INSTALL_MOD_PATH=/home/prasad/uml/linux-2.6.20/mnt/ ARCH=um > > > > Unmount the root file system > > --------------------------- > > umount mnt/ > > > > Ran UML --> which panicked > > ------- > > ./linux ubda=my-root_fs > > > > Is anything missing? > > > > [EMAIL PROTECTED]:/home/prasad/uml/linux-2.6.20# ./linux > > ubda=my-root_fs Checking that ptrace can change system call > > numbers...OK Checking syscall emulation patch for ptrace...OK > > Checking advanced syscall emulation patch for ptrace...OK 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 > > Checking that ptrace can change system call numbers...OK Checking > > syscall emulation patch for ptrace...OK Checking advanced syscall > > emulation patch for ptrace...OK Using a channel type which is > > configured out of UML Using a channel type which is configured out > > of UML Using a channel type which is configured out of UML Using a > > channel type which is configured out of UML Using a channel type > > which is configured out of UML Using a channel type which is > > configured out of UML Using a channel type which is configured out > > of UML Using a channel type which is configured out of UML Using a > > channel type which is configured out of UML Using a channel type > > which is configured out of UML Using a channel type which is > > configured out of UML Using a channel type which is configured out > > of UML Using a channel type which is configured out of UML Using a > > channel type which is configured out of UML Using a channel type > > which is configured out of UML [42949372.960000] Linux version > > 2.6.20 ([EMAIL PROTECTED]) (gcc version 4.1.2 20060928 > > (prerelease) (Ubuntu 4.1.1-13ubuntu5)) #1 Thu Mar 15 21:18:38 IST > > 2007 [42949372.960000] Built 1 zonelists. Total pages: 8128 > > [42949372.960000] Kernel command line: ubda=my-root_fs root=98:0 > > [42949372.960000] PID hash table entries: 128 (order: 7, 512 bytes) > > [42949372.960000] ------------------------ [42949372.960000] | > > Locking API testsuite: > > [42949372.960000] > > -------------------------------------------------------------------- > > ---- > > ---- > > [42949372.960000] | spin |wlock > > |rlock |mutex | wsem | rsem | > > [42949372.960000] > > -------------------------------------------------------------------- > > ---- > > -- > > [42949372.960000] A-A deadlock:failed|failed| ok > > |failed|failed|failed| > > [42949372.960000] A-B-B-A deadlock:failed|failed| ok > > |failed|failed|failed| > > [42949372.960000] A-B-B-C-C-A deadlock:failed|failed| ok > > |failed|failed|failed| > > [42949372.960000] A-B-C-A-B-C deadlock:failed|failed| ok > > |failed|failed|failed| > > [42949372.960000] A-B-B-C-C-D-D-A deadlock:failed|failed| ok > > |failed|failed|failed| > > [42949372.960000] A-B-C-D-B-D-D-A deadlock:failed|failed| ok > > |failed|failed|failed| > > [42949372.960000] A-B-C-D-B-C-D-A deadlock:failed|failed| ok > > |failed|failed|failed| > > [42949372.960000] double unlock: ok | ok > > |failed| ok |failed|failed| > > [42949372.960000] initialize > > held:failed|failed|failed|failed|failed|failed| > > [42949372.960000] bad unlock order: ok | ok | ok > > | ok | ok | ok | > > [42949372.960000] > > -------------------------------------------------------------------- > > ---- > > -- > > [42949372.960000] recursive read-lock: | ok > > | |failed| > > [42949372.960000] recursive read-lock #2: | ok > > | |failed| > > [42949372.960000] mixed read-write-lock: > > |failed| |failed| > > [42949372.960000] mixed write-read-lock: > > |failed| |failed| > > [42949372.960000] > > -------------------------------------------------------------------- > > ---- > > -- > > [42949372.960000] hard-irqs-on + irq-safe-A/12:failed|failed| ok | > > [42949372.960000] soft-irqs-on + irq-safe-A/12:failed|failed| ok | > > [42949372.960000] hard-irqs-on + irq-safe-A/21:failed|failed| ok | > > [42949372.960000] soft-irqs-on + irq-safe-A/21:failed|failed| ok | > > [42949372.960000] sirq-safe-A => hirqs-on/12:failed|failed| ok | > > [42949372.960000] sirq-safe-A => hirqs-on/21:failed|failed| ok | > > [42949372.960000] hard-safe-A + irqs-on/12:failed|failed| ok | > > [42949372.960000] soft-safe-A + irqs-on/12:failed|failed| ok | > > [42949372.960000] hard-safe-A + irqs-on/21:failed|failed| ok | > > [42949372.960000] soft-safe-A + irqs-on/21:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #1/123:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #1/123:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #1/132:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #1/132:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #1/213:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #1/213:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #1/231:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #1/231:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #1/312:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #1/312:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #1/321:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #1/321:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #2/123:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #2/123:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #2/132:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #2/132:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #2/213:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #2/213:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #2/231:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #2/231:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #2/312:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #2/312:failed|failed| ok | > > [42949372.960000] hard-safe-A + unsafe-B #2/321:failed|failed| ok | > > [42949372.960000] soft-safe-A + unsafe-B #2/321:failed|failed| ok | > > [42949372.960000] hard-irq lock-inversion/123:failed|failed| ok | > > [42949372.960000] soft-irq lock-inversion/123:failed|failed| ok | > > [42949372.960000] hard-irq lock-inversion/132:failed|failed| ok | > > [42949372.960000] soft-irq lock-inversion/132:failed|failed| ok | > > [42949372.960000] hard-irq lock-inversion/213:failed|failed| ok | > > [42949372.960000] soft-irq lock-inversion/213:failed|failed| ok | > > [42949372.960000] hard-irq lock-inversion/231:failed|failed| ok | > > [42949372.960000] soft-irq lock-inversion/231:failed|failed| ok | > > [42949372.960000] hard-irq lock-inversion/312:failed|failed| ok | > > [42949372.960000] soft-irq lock-inversion/312:failed|failed| ok | > > [42949372.960000] hard-irq lock-inversion/321:failed|failed| ok | > > [42949372.960000] soft-irq lock-inversion/321:failed|failed| ok | > > [42949372.960000] hard-irq read-recursion/123: ok | > > [42949372.960000] soft-irq read-recursion/123: ok | > > [42949372.960000] hard-irq read-recursion/132: ok | > > [42949372.960000] soft-irq read-recursion/132: ok | > > [42949372.960000] hard-irq read-recursion/213: ok | > > [42949372.960000] soft-irq read-recursion/213: ok | > > [42949372.960000] hard-irq read-recursion/231: ok | > > [42949372.960000] soft-irq read-recursion/231: ok | > > [42949372.960000] hard-irq read-recursion/312: ok | > > [42949372.960000] soft-irq read-recursion/312: ok | > > [42949372.960000] hard-irq read-recursion/321: ok | > > [42949372.960000] soft-irq read-recursion/321: ok | > > [42949372.960000] > > -------------------------------------------------------- > > [42949372.960000] 142 out of 218 testcases failed, as expected. | > > [42949372.960000] > > ---------------------------------------------------- > > [42949372.960000] Dentry cache hash table entries: 4096 (order: 2, > > 16384 bytes) > > [42949372.960000] Inode-cache hash table entries: 2048 (order: 1, > > 8192 > > bytes) > > [42949372.960000] Memory: 16224k available [42949373.250000] > > Mount-cache hash table entries: 512 [42949373.250000] Checking for > > host processor cmov support...Yes [42949373.250000] Checking for > > host processor xmm support...No [42949373.250000] Checking that host > > ptys support output SIGIO...Yes [42949373.250000] Checking that host > > ptys support SIGIO on close...No, enabling workaround > > [42949373.250000] Using 2.6 host AIO [42949373.250000] NET: > > Registered protocol family 16 [42949373.280000] NET: Registered > > protocol family 2 [42949373.410000] IP route cache hash table > > entries: 1024 (order: 0, > > 4096 bytes) > > [42949373.410000] TCP established hash table entries: 1024 (order: > > 2, > > 16384 bytes) > > [42949373.410000] TCP bind hash table entries: 512 (order: 1, 10240 > > bytes) > > [42949373.410000] TCP: Hash tables configured (established 1024 bind > > 512) > > [42949373.410000] TCP reno registered [42949373.450000] Checking > > host MADV_REMOVE support...MADV_REMOVE failed, err = -22 > > [42949373.450000] Can't release memory to the host - memory hotplug > > won't be supported [42949373.450000] mconsole (version 2) > > initialized on /root/.uml/Mw2JMK/mconsole [42949373.450000] Host TLS > > support detected [42949373.450000] Detected host type: i386 > > [42949373.450000] Initializing RT-Tester: OK [42949373.450000] io > > scheduler noop registered [42949373.450000] io scheduler > > anticipatory registered (default) [42949373.450000] io scheduler > > deadline registered [42949373.460000] io scheduler cfq registered > > [42949373.810000] RAMDISK driver initialized: 16 RAM disks of 4096K > > size 1024 blocksize [42949373.820000] loop: loaded (max 8 devices) > > [42949373.820000] netconsole: not configured, aborting > > [42949373.820000] TCP cubic registered [42949373.820000] NET: > > Registered protocol family 1 [42949373.820000] NET: Registered > > protocol family 17 [42949373.830000] Initialized stdio console > > driver [42949373.830000] parse_chan_pair failed for device 1 > > [42949373.830000] parse_chan_pair failed for device 2 > > [42949373.830000] parse_chan_pair failed for device 3 > > [42949373.830000] parse_chan_pair failed for device 4 > > [42949373.830000] parse_chan_pair failed for device 5 > > [42949373.830000] parse_chan_pair failed for device 6 > > [42949373.830000] parse_chan_pair failed for device 7 > > [42949373.830000] parse_chan_pair failed for device 8 > > [42949373.830000] parse_chan_pair failed for device 9 > > [42949373.830000] parse_chan_pair failed for device 10 > > [42949373.830000] parse_chan_pair failed for device 11 > > [42949373.830000] parse_chan_pair failed for device 12 > > [42949373.830000] parse_chan_pair failed for device 13 > > [42949373.830000] parse_chan_pair failed for device 14 > > [42949373.830000] parse_chan_pair failed for device 15 > > [42949373.830000] Console initialized on /dev/tty0 [42949373.860000] > > VFS: Cannot open root device "98:0" or > > unknown-block(98,0) > > [42949373.860000] Please append a correct "root=" boot option > > [42949373.860000] Kernel panic - not syncing: VFS: Unable to mount > > root fs on unknown-block(98,0) [42949373.860000] [42949373.860000] > > EIP: 0073:[<ffffe410>] CPU: 0 Not tainted ESP: > > 007b:b79abfa8 EFLAGS: 00200246 > > [42949373.860000] Not tainted > > [42949373.860000] EAX: 00000000 EBX: 00004525 ECX: 00000013 EDX: > > 00004525 > > [42949373.860000] ESI: 00004521 EDI: 00000011 EBP: b79abfc4 DS: 007b > > ES: 007b > > [42949373.860000] 0949fe88: [<080929d3>] show_regs+0x153/0x166 > > [42949373.860000] 0949feb4: [<0807754b>] panic_exit+0x62/0xa6 > > [42949373.860000] 0949fec8: [<080c3163>] > > notifier_call_chain+0x3e/0x76 [42949373.860000] 0949fee8: > > [<080c32b0>] > > atomic_notifier_call_chain+0x28/0x38 > > [42949373.860000] 0949fefc: [<080a103d>] panic+0xd5/0x215 > > [42949373.860000] 0949ff1c: [<0804aa61>] > > mount_block_root+0x222/0x254 [42949373.860000] 0949ff70: > > [<0804aced>] mount_root+0xb3/0xc9 [42949373.860000] 0949ff94: > > [<0804afa3>] prepare_namespace+0x2a0/0x312 [42949373.860000] > > 0949ffa4: [<0806c6e9>] init+0x1d8/0x3b5 [42949373.860000] 0949ffb4: > > [<08086e80>] run_kernel_thread+0x90/0xa6 [42949373.860000] 0949ffe0: > > [<08078273>] new_thread_handler+0x132/0x1ad [42949373.860000] > > 0949fffc: [<a55a5a5a>] 0xa55a5a5a [42949373.860000] > > [42949373.860000] <3>Trying to free already-free IRQ 2 > > [42949373.860000] Trying to free already-free IRQ 3 > > > > -------------------------------------------------------------------- > > ---- > > - > > 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=D > > EVDE > > V > > _______________________________________________ > > User-mode-linux-user mailing list > > User-mode-linux-user@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > > > ------------------------------------------------------------------------- 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-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
