[PATCH] Fix segmentation fault for makedumpfile -x/--split

[Aruna Balakrishnaiah]

On Thursday 23 February 2012 03:05 PM, Atsushi Kumagai wrote:
Hi Atsushi,

> Hi Aruna,
>
> On Wed, 1 Feb 2012 13:15:18 +0900
> Atsushi Kumagai<kumagai-atsushi at mxc.nes.nec.co.jp>  wrote:
>
>> Hi Aruna,
>>
>> On Tue, 31 Jan 2012 15:56:33 +0530
>> Aruna Balakrishnaiah<aruna at linux.vnet.ibm.com>  wrote:
>>
>>> The patch fixes the segmentation fault issue of makedumpfile when a
>>> user specifies an invalid file name with -x/--split option.
>>> The patch takes care of such a scenario by setting .find_debuginfo to
>>> a function pointer which returns -1 and throws error messages against
>>> invalid vmlinux file input. With a valid vmlinux file .find_debuginfo
>>> was never invoked since the absolute path of debuginfo was known by the
>>> time we call init_dwarf_info.
>>>
>>> Signed-off-by: Aruna Balakrishnaiah<aruna at linux.vnet.ibm.com>
>>> ---
>>>   dwarf_info.c |   25 +++++++++++++++++++++++++
>>>   1 files changed, 25 insertions(+), 0 deletions(-)
> I'm reviewing your patch and it looks good.
>
> However, I can't guess that the segmentation fault caused
> by --split option because --split option doesn't require an argument.
>
> Would you tell me the case that you thought.
This is the case,

makedumpfile --split -x /boot/vmlinuz vmcore vm1 vm2

when used compressed vmlinux with -x.

Thanks,
Aruna


> Thanks
> Atsushi Kumagai
>


-- 
Regards,
Aruna Balakrishnaiah<aruna at linux.vnet.ibm.com>
Linux Technology Center,
IBM India Systems and Technology Lab