linux-kernel - Re: [mm] c566586818: BUG:kernel_hang_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to

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Date:   Wed, 26 Aug 2020 18:30:10 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Qian Cai <cai@....pw>
Cc:     Rong Chen <rong.a.chen@...el.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org
Subject: Re: [mm] c566586818:
 BUG:kernel_hang_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to_disable)...ok

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@...el.com> 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?

-- 
Catalin