Re: [Xen-devel] BUG: unable to handle kernel paging request - balloon_init - xen-4.1.0 - 2.6.32.39

[Scott Garron <xen-devel@xxxxxxxxxxxxxxxxxx>]

On 4/25/2011 11:15 PM, Konrad Rzeszutek Wilk wrote:
> so if you launch gdb:
>
>   x/20i 0xffffffff819a88df
>
> should give an idea what instruction is causing it.
Reading symbols from /usr/src/linux-2.6-xen/vmlinux...done.
(gdb) x/20i 0xffffffff819a88df
0xffffffff819a88df <balloon_init>:      push   %rbp
0xffffffff819a88e0 <balloon_init+1>:    mov    $0xffffffed,%eax
0xffffffff819a88e5 <balloon_init+6>:    mov    %rsp,%rbp
0xffffffff819a88e8 <balloon_init+9>:    push   %rbx
0xffffffff819a88e9 <balloon_init+10>:   sub    $0x8,%rsp
0xffffffff819a88ed <balloon_init+14>:
    cmpl   $0x0,0x57a0c(%rip)        # 0xffffffff81a00300
0xffffffff819a88f4 <balloon_init+21>:
    je     0xffffffff819a8b39 <balloon_init+602>
0xffffffff819a88fa <balloon_init+27>:
    mov    0x11a8a0(%rip),%esi        # 0xffffffff81ac31a0
0xffffffff819a8900 <balloon_init+33>:   xor    %eax,%eax
0xffffffff819a8902 <balloon_init+35>:   mov    $0xffffffff817ea59c,%rdi
0xffffffff819a8909 <balloon_init+42>:   callq  0xffffffff815c229e <printk>
0xffffffff819a890e <balloon_init+47>:
    mov    0x11a88c(%rip),%ecx        # 0xffffffff81ac31a0
0xffffffff819a8914 <balloon_init+53>:   mov    $0x1,%eax
0xffffffff819a8919 <balloon_init+58>:   shl    %cl,%eax
0xffffffff819a891b <balloon_init+60>:
    cmpl   $0x1,0x579de(%rip)        # 0xffffffff81a00300
0xffffffff819a8922 <balloon_init+67>:   cltq
0xffffffff819a8924 <balloon_init+69>:
    mov    %rax,0x11a87d(%rip)        # 0xffffffff81ac31a8
0xffffffff819a892b <balloon_init+76>:
    jne    0xffffffff819a893a <balloon_init+91>
0xffffffff819a892d <balloon_init+78>:
    mov    0x579d4(%rip),%rax        # 0xffffffff81a00308
0xffffffff819a8934 <balloon_init+85>:   mov    0x20(%rax),%rax

--
Scott Garron

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