Hi Mika,
Please check your platforms
arch/arm/mach-<yourmach>/include/mach/memory.h and set both
_SECTION_SIZE_BITS and _MAX_PHYSMEM_BITS to be the same as defined in
the header. If crash works with the correct values, we just need to
Both SECTION_SIZE_BITS 28 and MAX_PHYSMEM_BITS 32 are defined correctly in the
kernel header and defs.h.
Although, still I got
> crash: invalid kernel virtual address: f67f000 type: "page
table"
It might come form my vmcore file's incorrectness.
Currently my vmcore contains the following,
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
NOTE 0x000074 0x00000000 0x00000000 0x00000 0x00000 0
LOAD 0x000074 0xc0000000 0x00000000 0x20000000 0x20000000 RWE 0
But actual mapping is,
Virtual 0xc0000000-0xcfffffff corresponds Physical 0x00000000-0x0fffffff
and
Virtual 0xd0000000-0xdfffffff corresponds Physical 0x40000000-0x4fffffff
Then I tried to prepend the following header instead,
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
NOTE 0x000094 0x00000000 0x00000000 0x00000 0x00000 0
LOAD 0x000094 0xc0000000 0x00000000 0x10000000 0x10000000 RWE 0
LOAD 0x10000094 0xd0000000 0x40000000 0x10000000 0x10000000 RWE 0
This time crash does not recognize the vmcore file.
Perhaps I have to change VTOP/PTOV macros accordingly?
Best Regards,
Takuo
--------------
>On Wed, May 25, 2011 at 10:11 AM, <takuo.koguchi.sw(a)hitachi.com> wrote:
>>>... But I got another error later, which I will report later.
>> Now I set _SECTION_SIZE_BITS 22 and see what happens next.
>> I found that readmem for "page table" failed while excuting
init_unwind_tables() in unwind_arm.c and crash exited.
>>
> crash: invalid kernel virtual address: f67f000 type: "page
table"
>>
>> Instead of investigating this issue, I continue by skipping init_unwind_tables
for a while.
>> Because crash gives me a prompt now and I am quite interested in whether it gives
me some useful information or not.
>>
>
Please check your platforms
arch/arm/mach-<yourmach>/include/mach/memory.h and set both
_SECTION_SIZE_BITS and _MAX_PHYSMEM_BITS to be the same as defined in
the header. If crash works with the correct values, we just need to
>find out some way of guessing these.
>
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