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List:       user-mode-linux-user
Subject:    [uml-user] 2.6.12.[35]-bs{7,11} boot failure
From:       Nix <nix () esperi ! org ! uk>
Date:       2005-08-18 20:10:58
Message-ID: 87iry3j99p.fsf () amaterasu ! srvr ! nix
[Download RAW message or body]

(Those are all the 2.6.12 UMLs I've tried.)

Basically, userspace never starts: the last two lines I see are

VFS: Mounted root (ext2 filesystem) readonly.
line_ioctl: tty0: ioctl KDSIGACCEPT called
[halt]

(If I reboot into 2.6.11.9-bs5 with the same root fs, the next line
I see is init's banner.)

A trace of the main thread shows it sleeping, perhaps because, well,
userspace hasn't started yet:

USER       PID  PPID  C STIME TTY          TIME CMD
firewall 14958 14942  0 20:40 ?        00:00:00 [uml-esperi]
firewall 14962 14942  0 20:40 ?        00:00:00 uml-esperi con=port:16380 \
con0=fd:0,fd:1 fakeide mem=96M ubd0=/mirror/uml/esperi-roo firewall 14963 14942  0 \
20:40 ?        00:00:00 uml-esperi con=port:16380 con0=fd:0,fd:1 fakeide mem=96M \
ubd0=/mirror/uml/esperi-roo firewall 14942 14941  1 20:40 ?        00:00:01 \
uml-esperi con=port:16380 con0=fd:0,fd:1 fakeide mem=96M ubd0=/mirror/uml/esperi-roo

Attaching to program: /usr/packages/linux/variants/i586-esperi/linux, process 14942
Reading symbols from /lib/libutil.so.1...done.
Loaded symbols for /lib/libutil.so.1
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
0xb7ee91e5 in nanosleep () from /lib/libc.so.6
(gdb) bt
#0  0xb7ee91e5 in nanosleep () from /lib/libc.so.6
#1  0x0805e28f in idle_sleep ()
#2  0x081f3bb4 in init_thread_union ()
#3  0x00000000 in ?? ()
#4  0xbfd765d8 in ?? ()
#5  0x0805b601 in kernel_thread ()
#6  0x0000000a in ?? ()
#7  0x00000000 in ?? ()
#8  0x00000000 in ?? ()
#9  0x0805b81c in default_idle ()
#10 0x0000000a in ?? ()
#11 0xbfd765d8 in ?? ()
#12 0x0805b82f in default_idle ()
#13 0x081f0000 in ?? ()
#14 0x081f0000 in ?? ()
#15 0x081f0000 in ?? ()
#16 0x081f0000 in ?? ()
#17 0x081f0000 in ?? ()
#18 0x00000000 in ?? ()
#19 0x08061804 in init_idle_skas ()
#20 0x08049598 in start_kernel ()
#21 0x00000000 in ?? ()
#22 0x00000000 in ?? ()
#23 0x0822aba0 in uml_start ()
#24 0x0806183b in start_kernel_proc ()
#25 0x08061810 in init_idle_skas ()
#26 0x00000000 in ?? ()
#27 0x00000001 in ?? ()
#28 0x081f5220 in init_task ()
#29 0x081f5220 in init_task ()
#30 0x00000000 in ?? ()
#31 0x08061810 in init_idle_skas ()
#32 0x0805b35b in run_kernel_thread ()
#33 0x00000001 in ?? ()
#34 0x10000000 in ?? ()
#35 0x00000000 in ?? ()
#36 0x00000000 in ?? ()
#37 0x00000000 in ?? ()
#38 0x00000000 in ?? ()
#39 0x00000000 in ?? ()
#40 0x00000000 in ?? ()
#41 0x00000000 in ?? ()
#42 0x00000000 in ?? ()
#43 0x00000000 in ?? ()
#44 0x00000000 in ?? ()
#45 0x00000000 in ?? ()
#46 0x00000000 in ?? ()
#47 0x00000000 in ?? ()
#48 0x00000000 in ?? ()
#49 0x00000000 in ?? ()
#50 0x00000000 in ?? ()
#51 0x00000000 in ?? ()
#52 0x00000000 in ?? ()
#53 0x00000000 in ?? ()
#54 0x00000000 in ?? ()
#55 0x00000000 in ?? ()
#56 0x00000000 in ?? ()
#57 0x00000000 in ?? ()
#58 0x00000000 in ?? ()
#59 0x00000000 in ?? ()
#60 0x00000000 in ?? ()
#61 0x00000000 in ?? ()
#62 0x00000000 in ?? ()
#63 0x00000000 in ?? ()
#64 0x00000000 in ?? ()
#65 0x00000000 in ?? ()
#66 0x00000000 in ?? ()
#67 0x00000000 in ?? ()
#68 0x08061810 in init_idle_skas ()
#69 0x00000000 in ?? ()
#70 0x081f5220 in init_task ()
#71 0x08060fd8 in thread_wait ()
#72 0x00000000 in ?? ()
#73 0x081f0000 in ?? ()
#74 0x081f0000 in ?? ()
#75 0x00000000 in ?? ()
#76 0x081f0000 in ?? ()
#77 0x081f0000 in ?? ()
#78 0x081f0000 in ?? ()
#79 0x081f0000 in ?? ()
#80 0x081f0000 in ?? ()
#81 0x00003a5e in ?? ()
#82 0x06000000 in ?? ()
#83 <signal handler called>
#84 0xb7e8d321 in kill () from /lib/libc.so.6
#85 0xb7e8cf94 in siglongjmp () from /lib/libc.so.6
#86 0xb7e7a4ae in __libc_start_main () from /lib/libc.so.6
#87 0x080580d1 in _start ()


Any ideas?

(And sorry for not getting around to getting a backtrace for so long
after the release of 2.6.12.*.)

-- 
`I work in computers so, of course, I'm an expert on everything.'
                                                     --- Simon Rumble


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