Balbir Singh writes:
>>> Changelog:
>>> Don't add PAGE_OFFSET blindly, check if REGION_ID is 0
>>>
>>> I ran into this issue while debugging an early boot problem.
>>> The system hit a BUG_ON() but report bug failed to print the
>>> line number and file name. The reason being that the system
>> Changelog:
>> Don't add PAGE_OFFSET blindly, check if REGION_ID is 0
>>
>> I ran into this issue while debugging an early boot problem.
>> The system hit a BUG_ON() but report bug failed to print the
>> line number and file name. The reason being that the system
>> was running in real mode
Balbir Singh writes:
>> It might be a little better to do this:
>>
>> bugaddr = regs->nip;
>> if (REGION_ID(bugaddr) == 0 && !(regs->msr & MSR_IR))
>> bugaddr += PAGE_OFFSET;
>>
>> It is possible to execute from addresses with the 0xc000... on top
On 02/17/2016 12:46 PM, Balbir Singh wrote:
>> > It might be a little better to do this:
>> >
>> >bugaddr = regs->nip;
>> >if (REGION_ID(bugaddr) == 0 && !(regs->msr & MSR_IR))
>> >bugaddr += PAGE_OFFSET;
>> >
>> > It is possible to execute from address
On Wed, Feb 17, 2016 at 01:33:32PM +0530, Anshuman Khandual wrote:
> On 02/17/2016 12:46 PM, Balbir Singh wrote:
> >> > It might be a little better to do this:
> >> >
> >> > bugaddr = regs->nip;
> >> > if (REGION_ID(bugaddr) == 0 && !(regs->msr & MSR_IR))
> >> >
> It might be a little better to do this:
>
> bugaddr = regs->nip;
> if (REGION_ID(bugaddr) == 0 && !(regs->msr & MSR_IR))
> bugaddr += PAGE_OFFSET;
>
> It is possible to execute from addresses with the 0xc000... on top in
> real mode, because th
On Wed, Feb 17, 2016 at 03:43:11PM +1100, Balbir Singh wrote:
> From: Balbir Singh
>
> I ran into this issue while debugging an early boot problem.
> The system hit a BUG_ON() but report bug failed to print the
> line number and file name. The reason being that the system
> was running in real mo
From: Balbir Singh
I ran into this issue while debugging an early boot problem.
The system hit a BUG_ON() but report bug failed to print the
line number and file name. The reason being that the system
was running in real mode and report_bug() searches for
addresses in the PAGE_OFFSET+ region
Sug
