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xen-devel
[Xen-devel] Re: 2.6.26-rc8 pv_ops causes Unhandled invalid opcode fault/
Jeremy Fitzhardinge wrote:
Were there any other errors/warnings printed here?
Nope. Just some whitespace.
Are you sure? Could you send a full xm dmesg log output? The crash is
from a BUG() caused by a failing hypercall. Since you have compiled Xen
with debug enabled, it should have printed something about why it was
failing the hypercall.
Unfortunately, I included the entire dmesg output from that xm create
run. Here's more of the transcript in case it's useful:
http://www.theshore.net/~caker/xen/pvops-bug1/log.txt
Although, looking at it again, I did miss this line:
(XEN) mm.c:645:d341 Non-privileged (341) attempt to map I/O space 000d2e50
For reference:
$ gdb 2.6.26-rc8-linode11 GNU gdb Fedora (6.8-10.fc9)
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...
(no debugging symbols found)
(gdb) x/i 0x00000000c0103b55 <- note: need to add
0x to start
0xc0103b55 <make_lowmem_page_readonly+85>: ud2a (gdb) disassemble
make_lowmem_page_readonly
Dump of assembler code for function make_lowmem_page_readonly:
0xc0103b00 <make_lowmem_page_readonly+0>: push %ebp
0xc0103b01 <make_lowmem_page_readonly+1>: mov %eax,%ebp
0xc0103b03 <make_lowmem_page_readonly+3>: push %edi
Cool, thanks :)
-Chris
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