Re: [lkp] [mm] 122708b1b9: PANIC: early exception
From: Andrew Morton
Date: Wed Aug 17 2016 - 15:18:58 EST
On Wed, 17 Aug 2016 17:10:28 +0100 Catalin Marinas <catalin.marinas@xxxxxxx> wrote:
> On Wed, Aug 17, 2016 at 11:51:41PM +0800, kernel test robot wrote:
> > FYI, we noticed the following commit:
> >
> > https://github.com/0day-ci/linux Catalin-Marinas/mm-kmemleak-Avoid-using-__va-on-addresses-that-don-t-have-a-lowmem-mapping/20160816-232733
> > commit 122708b1b91eb3d253baf86a263ead0f1f5cac78 ("mm: kmemleak: Avoid using __va() on addresses that don't have a lowmem mapping")
> >
> > in testcase: boot
> >
> > on test machine: 1 threads qemu-system-i386 -enable-kvm with 320M memory
> >
> > caused below changes:
> >
> > +--------------------------------+------------+------------+
> > | | 304bec1b1d | 122708b1b9 |
> > +--------------------------------+------------+------------+
> > | boot_successes | 3 | 0 |
> > | boot_failures | 5 | 8 |
> > | invoked_oom-killer:gfp_mask=0x | 1 | |
> > | Mem-Info | 1 | |
> > | BUG:kernel_test_crashed | 4 | |
> > | PANIC:early_exception | 0 | 8 |
> > | EIP_is_at__phys_addr | 0 | 8 |
> > | BUG:kernel_hang_in_boot_stage | 0 | 2 |
> > | BUG:kernel_boot_hang | 0 | 6 |
> > +--------------------------------+------------+------------+
>
> Please disregard this patch. I posted v2 here:
>
> http://lkml.kernel.org/g/1471426130-21330-1-git-send-email-catalin.marinas@xxxxxxx
>
> (and I'm eager to see the kbuild/kernel test robot results ;))
I don't see how the v1->v2 changes could fix a panic?