Same tests but with 64-bit root_fs (unmodified gentoo 2005.1 amd64 stage3)
TT: Crash
---------
...
NET: Registered protocol family 17
Initialized stdio console driver
Console initialized on /dev/tty0
Initializing software serial port version 1
ubda: unknown partition table
ubdb: unknown partition table
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
Kernel panic - not syncing: Kernel mode fault at addr 0x0, ip 0x0
Modules linked in:
Pid: 1, comm: init Not tainted 2.6.15
RIP: 8000:[<0000000000000000>]
RSP: 00000000603dbc30 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 000000006015faa1
RDX: 000000006002398a RSI: 0000000000000001 RDI: 00000000603dbad0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 000000000000000a R15: 0000000000000000
Call Trace:
603db6d8: [<60012dbf>] panic_exit+0x2d/0x47
603db6f8: [<60039c1e>] notifier_call_chain+0x25/0x38
603db700: [<6015faa1>] __sigprocmask+0x11/0x40
603db728: [<600292c4>] panic+0xe4/0x175
603db768: [<6015faa1>] __sigprocmask+0x11/0x40
603db798: [<6001227b>] handle_page_fault+0x20f/0x25f
603db818: [<60012413>] segv+0x148/0x2be
603db828: [<6015fc05>] sigemptyset+0x15/0x40
603db838: [<60010333>] change_sig+0x58/0x70
603db8a8: [<6015fc05>] sigemptyset+0x15/0x40
603db8b8: [<6001039c>] change_signals+0x51/0x71
603db928: [<60012837>] segv_handler+0xc7/0xd0
603db968: [<60015275>] sig_handler_common_tt+0xe1/0x120
603db9d8: [<600239b9>] sig_handler+0x19/0x22
603db9e8: [<6015f820>] __restore_rt+0x0/0x10
603dba78: [<6002398a>] run_kernel_thread+0x2d/0x43
603dba88: [<6015faa1>] __sigprocmask+0x11/0x40
603dbae0: [<6000c184>] init+0x0/0x140
603dbb08: [<6002398a>] run_kernel_thread+0x2d/0x43
603dbb88: [<6000c184>] init+0x0/0x140
603dbb98: [<600103d7>] unblock_signals+0xe/0x10
603dbba8: [<60013ba7>] new_thread_handler+0x17f/0x193
603dbcd8: [<6015faa1>] __sigprocmask+0x11/0x40
SKAS0: Busy hang
----------------
...
TCP bic registered
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
ubda: unknown partition table
ubdb: unknown partition table
VFS: Mounted root (ext2 filesystem).
SKAS3: Crash
------------
...
TCP bic registered
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
ubda: unknown partition table
ubdb: unknown partition table
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
Kernel panic - not syncing: map_stub_pages : /proc/mm map for code failed, err
= 22
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.15
RIP: 0033:[<000000006015fad9>]
RSP: 00002aaaaaaacfc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000004031 RCX: ffffffffffffffff
RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000004031
RBP: 00002aaaaaaacfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000402e
R13: 00002aaaaaaac000 R14: 00007fffffffe0b8 R15: 00007fffffffe4c8
Call Trace:
603e3878: [<60012dbf>] panic_exit+0x2d/0x47
603e3898: [<60039c1e>] notifier_call_chain+0x25/0x38
603e38a0: [<6015faa1>] __sigprocmask+0x11/0x40
603e38c8: [<600292c4>] panic+0xe4/0x175
603e3910: [<6000e87c>] copy_to_user_proc+0x0/0x1b
603e3948: [<60170c49>] __syscall_error_1+0x6/0x1d
603e3958: [<600223c3>] file_io+0xac/0xcc
603e3968: [<6016ca20>] __libc_write+0x0/0x80
603e39b8: [<60016da6>] map_stub_pages+0xb5/0x189
603e39d8: [<6004e8b7>] prep_new_page+0x6c/0x75
603e39f8: [<6016c8a3>] __libc_open64+0xc3/0x150
603e3ac8: [<600175a7>] new_mm+0xb4/0xc4
603e3ad8: [<6004f588>] __mod_page_state+0x2c/0x34
603e3b08: [<600582c3>] __pte_alloc+0x4f/0x82
603e3b38: [<600160fe>] init_stub_pte+0x8e/0x13e
603e3b78: [<600162d1>] init_new_context_skas+0x123/0x196
603e3bc8: [<600725c5>] do_execve+0xca/0x235
603e3bf0: [<6000c184>] init+0x0/0x140
603e3c18: [<6000c758>] execve1+0x26/0x77
603e3c58: [<6000c7b4>] um_execve+0xb/0x3c
603e3c78: [<6000c15d>] run_init_process+0x48/0x6f
603e3ca8: [<6000c298>] init+0x114/0x140
603e3cd8: [<6002399b>] run_kernel_thread+0x3e/0x43
603e3ce8: [<6000c184>] init+0x0/0x140
603e3d00: [<6000c184>] init+0x0/0x140
603e3d28: [<6002398a>] run_kernel_thread+0x2d/0x43
603e3d68: [<600103d7>] unblock_signals+0xe/0x10
603e3d78: [<60025b73>] schedule_tail+0x2b/0x186
603e3db0: [<6000c184>] init+0x0/0x140
603e3dc8: [<60017309>] new_thread_handler+0xf6/0x12c
603e3e38: [<6015f820>] __restore_rt+0x0/0x10
603e3ee8: [<6015fad9>] __kill+0x9/0x20
End result is that if I want to run 2005.1 gentoo on amd64 host, the only
combination working for me with 2.6.15 unpatched is 32-bit kernel running
with 32-bit stage3 in skas0 mode. (I have earlier been able to run skas3
in 32bit with a slackware root_fs, I did not test this with 2.6.15 though)
This is an improvement, since I couldn't run unmodified stage3's in skas0
before due to the glibc tls issues. 2.6.14-SKAS0-32bit works fine in my
production environment anyway, so I'm pretty happy. I just wanted to play
around with 2.6.15 to see what happened. :-)
// Joel
On Tue, 3 Jan 2006, Jeff Dike wrote:
On Tue, Jan 03, 2006 at 01:30:06PM +0100, Joel Palmius wrote:
SKAS0: Busy hang
----------------
...
TCP bic registered
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
ubda: unknown partition table
ubdb: unknown partition table
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
request_module: runaway loop modprobe binfmt-464c
SKAS0: boots and works fine
---------------------------
I have yet to test the 64-bit guest with a 64-bit root_fs.
That would be a good idea.
(Maybe it's a
"doh!" on my side that the 64-bit guest kernel doesn't work with 32-bit
root_fs's)
Yup, I haven't added the 32-bit emulation yet,
I've only really tested x64_64 support with skas0, so I'm not too
surprised that the others don't work. TT mode is in its way out, so
I'm not too concerned about it. It would be nice for skas3 to work,
though.
Jeff
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