From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Qian Cai <cai@lca.pw>
Cc: akpm@linux-foundation.org, heiko.carstens@de.ibm.com,
gor@linux.ibm.com, borntraeger@de.ibm.com,
linux-s390@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/page_alloc: fix a crash in free_pages_prepare()
Date: Mon, 30 Sep 2019 14:04:34 +0300 [thread overview]
Message-ID: <20190930110434.5k47w7xfvkjcohkp@box> (raw)
In-Reply-To: <1569613623-16820-1-git-send-email-cai@lca.pw>
On Fri, Sep 27, 2019 at 03:47:03PM -0400, Qian Cai wrote:
> On architectures like s390, arch_free_page() could mark the page unused
> (set_page_unused()) and any access later would trigger a kernel panic.
> Fix it by moving arch_free_page() after all possible accessing calls.
Looks like Power also uses the hook. Have you check that this patch will
not affect Power?
--
Kirill A. Shutemov
next prev parent reply other threads:[~2019-09-30 11:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-27 19:47 Qian Cai
2019-09-27 20:48 ` Andrew Morton
2019-09-27 21:15 ` Qian Cai
2019-09-30 7:44 ` Heiko Carstens
2019-09-27 21:02 ` Andrew Morton
2019-09-27 21:28 ` Qian Cai
2019-09-27 21:59 ` Andrew Morton
2019-09-27 22:17 ` Alexander Duyck
2019-09-28 9:06 ` David Hildenbrand
2019-09-30 6:27 ` Christian Borntraeger
2019-09-30 6:30 ` Christian Borntraeger
2019-09-30 11:00 ` Michal Hocko
2019-09-30 11:04 ` Kirill A. Shutemov [this message]
2019-09-30 11:22 ` Qian Cai
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