Re: BUG: unable to handle kernel paging request

[Markus]

Forgot cpuinfo yesterday, sorry!

Markus

> From: Markus <M4rkusXXL@xxxxxx>
> Date: Sun, May 23, 2010 at 10:44:41PM +0200
> 
> > It is 0000000001912178.
> > http://img256.imageshack.us/img256/4370/shotn.gif
> 
> True story, the fact that this value is not what it is expected to be
> judging from the code it happens might actually be a clue:
> 
> [64112.502507] Code: 8b bf b0 00 00 00 31 ed 48 8d 50 f0 48 85 c0 48
> 0f 45 ea 48 85 ff 74 10 48 89 ee e8 8d d3 ff ff 85 c0 0f 8e c5 00 00
> 00 48 89 eb <49> 8b bd b8 00 00 00 48 85 ff 74 10 48 89 ee e8 6e d3
> ff ff 85 All code
> ========
>    0:   8b bf b0 00 00 00       mov    0xb0(%rdi),%edi
>    6:   31 ed                   xor    %ebp,%ebp
>    8:   48 8d 50 f0             lea    -0x10(%rax),%rdx
>    c:   48 85 c0                test   %rax,%rax
>    f:   48 0f 45 ea             cmovne %rdx,%rbp
>   13:   48 85 ff                test   %rdi,%rdi
>   16:   74 10                   je     0x28
>   18:   48 89 ee                mov    %rbp,%rsi
>   1b:   e8 8d d3 ff ff          callq  0xffffffffffffd3ad
>   20:   85 c0                   test   %eax,%eax
>   22:   0f 8e c5 00 00 00       jle    0xed
>   28:   48 89 eb                mov    %rbp,%rbx
>   2b:*  49 8b bd b8 00 00 00    mov    0xb8(%r13),%rdi     <--
> trapping instruction 32:   48 85 ff                test   %rdi,%rdi
>   35:   74 10                   je     0x47
>   37:   48 89 ee                mov    %rbp,%rsi
>   3a:   e8 6e d3 ff ff          callq  0xffffffffffffd3ad
>   3f:   85                      .byte 0x85
> 
> Code starting with the faulting instruction
> ===========================================
>    0:   49 8b bd b8 00 00 00    mov    0xb8(%r13),%rdi
>    7:   48 85 ff                test   %rdi,%rdi
>    a:   74 10                   je     0x1c
>    c:   48 89 ee                mov    %rbp,%rsi
>    f:   e8 6e d3 ff ff          callq  0xffffffffffffd382
>   14:   85                      .byte 0x85
> 
> 
> and %r13 contains 00000000019129c0 in the register snapshot. Hmm...
> 
> > Serial console is no option, but this "netconsole"-thing looks
> > promising. I'll set that up and try to catch the next one with
> > this.
> 
> That'll help. Also let me make sure: Is this a vanilla kernel or are
> there any distribution patches on top of it? I see it says
> 2.6.34-gentoo but just in case. If it is not a vanilla kernel please
> try a vanilla one from kernel.org.
> 
> Also, please send the whole dmesg of the system, there might be
> something suspicious there and also the output of 'cat /proc/cpuinfo'
> and 'dmidecode', the last one run as root.
> 
> Thanks.

processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 16
model		: 4
model name	: AMD Phenom(tm) II X4 955 Processor
stepping	: 2
cpu MHz		: 3200.000
cache size	: 512 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save
bogomips	: 6400.59
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate

processor	: 1
vendor_id	: AuthenticAMD
cpu family	: 16
model		: 4
model name	: AMD Phenom(tm) II X4 955 Processor
stepping	: 2
cpu MHz		: 3200.000
cache size	: 512 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save
bogomips	: 6400.03
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate

processor	: 2
vendor_id	: AuthenticAMD
cpu family	: 16
model		: 4
model name	: AMD Phenom(tm) II X4 955 Processor
stepping	: 2
cpu MHz		: 3200.000
cache size	: 512 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 2
initial apicid	: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save
bogomips	: 6400.02
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate

processor	: 3
vendor_id	: AuthenticAMD
cpu family	: 16
model		: 4
model name	: AMD Phenom(tm) II X4 955 Processor
stepping	: 2
cpu MHz		: 3200.000
cache size	: 512 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 3
initial apicid	: 3
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save
bogomips	: 6400.02
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate