From: Borislav Petkov <bp@alien8.de>
To: Qian Cai <cai@lca.pw>
Cc: Christoph Hellwig <hch@lst.de>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
x86 <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
kasan-dev <kasan-dev@googlegroups.com>
Subject: Re: AMD boot woe due to "x86/mm: Cleanup pgprot_4k_2_large() and pgprot_large_2_4k()"
Date: Wed, 22 Apr 2020 18:17:57 +0200 [thread overview]
Message-ID: <20200422161757.GC26846@zn.tnic> (raw)
In-Reply-To: <1ED37D02-125F-4919-861A-371981581D9E@lca.pw>
On Wed, Apr 22, 2020 at 11:55:54AM -0400, Qian Cai wrote:
> Reverted the linux-next commit and its dependency,
>
> a85573f7e741 ("x86/mm: Unexport __cachemode2pte_tbl”)
> 9e294786c89a (“x86/mm: Cleanup pgprot_4k_2_large() and pgprot_large_2_4k()”)
>
> fixed crashes or hard reset on AMD machines during boot that have been flagged by
> KASAN in different forms indicating some sort of memory corruption with this config,
>
> https://raw.githubusercontent.com/cailca/linux-mm/master/x86.config
What is the special thing about this config? You have KASAN enabled and?
Anything else?
I need to know what are the relevant switches you've enabled so that I
can enable them on my box too and try to reproduce.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2020-04-22 16:18 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-22 15:55 AMD boot woe due to "x86/mm: Cleanup pgprot_4k_2_large() and pgprot_large_2_4k()" Qian Cai
2020-04-22 16:17 ` Borislav Petkov [this message]
2020-04-22 16:35 ` Qian Cai
2020-04-22 16:47 ` Borislav Petkov
2020-04-22 18:54 ` Qian Cai
2020-04-22 17:01 ` Christoph Hellwig
2020-04-22 18:35 ` Qian Cai
2020-04-22 21:32 ` Qian Cai
2020-04-22 21:47 ` Borislav Petkov
2020-04-22 21:57 ` Qian Cai
2020-04-22 22:05 ` Borislav Petkov
2020-04-23 6:08 ` Christoph Hellwig
2020-04-23 10:47 ` Qian Cai
2020-04-23 11:06 ` Boris Petkov
2020-04-23 11:21 ` Qian Cai
2020-04-23 12:22 ` Borislav Petkov
2020-04-23 12:26 ` [tip: x86/mm] x86/mm: Use pgprotval_t in protval_4k_2_large() and protval_large_2_4k() tip-bot2 for Christoph Hellwig
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