Re: [mm] c566586818: BUG:kernel_hang_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to_disable)...ok

[Rong Chen]

On 8/27/20 1:30 AM, Catalin Marinas wrote:
> On Tue, Aug 25, 2020 at 11:02:40PM -0400, Qian Cai wrote:
> > On Aug 25, 2020, at 8:44 PM, Rong Chen <rong.a.chen@xxxxxxxxx> wrote:
> > > I rebuilt the kernel on commit c566586818 but the error changed to
> > > "RIP: 0010:clear_page_orig+0x12/0x40", and the error can be
> > > reproduced on parent commit:
> > Catalin, any thought? Sounds like those early kmemleak allocations
> > cause some sort of memory corruption?
> I can't immediately see how but Rong implies that the error also happens
> on the parent commit. Does it mean the bisection isn't entirely right?

Hi Catalin,

The original bisection is for "BUG:kernel_hang_in_early-boot_stage" 
which locate to commit c566586818,
and the boot will go on and meet the error "RIP: 
0010:clear_page_orig+0x12/0x40" if we set
CONFIG_DEBUG_KMEMLEAK_MEM_POOL_SIZE=400, but the error shouldn't cause 
by commit c566586818
because we can reproduce the error on parent commit.

Best Regards,
Rong Chen