From: Christoph Hellwig <hch@infradead.org>
To: Stefan O'Rear <sorear2@gmail.com>
Cc: schwab@suse.de, linux-riscv@lists.infradead.org,
Palmer Dabbelt <palmer@sifive.com>,
Albert Ou <aou@eecs.berkeley.edu>
Subject: Re: [PATCH] riscv: Add pte bit to distinguish swap from invalid
Date: Mon, 17 Dec 2018 10:37:41 -0800 [thread overview]
Message-ID: <20181217183741.GB23353@infradead.org> (raw)
In-Reply-To: <1544983416-32532-1-git-send-email-sorear2@gmail.com>
On Sun, Dec 16, 2018 at 01:03:36PM -0500, Stefan O'Rear wrote:
> Previously, invalid PTEs and swap PTEs had the same binary
> representation, causing errors when attempting to unmap PROT_NONE
> mappings, including implicit unmap on exit.
>
> Typical error:
>
> swap_info_get: Bad swap file entry 40000000007a9879
> BUG: Bad page map in process a.out pte:3d4c3cc0 pmd:3e521401
>
> Cc: stable@vger.kernel.org
> Signed-off-by: Stefan O'Rear <sorear2@gmail.com>
Looks fine:
Reviewed-by: Christoph Hellwig <hch@lst.de>
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next prev parent reply other threads:[~2018-12-17 18:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-16 18:03 [PATCH] riscv: Add pte bit to distinguish swap from invalid Stefan O'Rear
2018-12-17 18:37 ` Christoph Hellwig [this message]
2019-02-08 17:36 ` David Abdurachmanov
2019-02-08 17:46 ` Palmer Dabbelt
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