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From: Vineeth Pillai <vpillai@digitalocean.com>
To: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Kelley Nielsen <kelleynnn@gmail.com>,
	Huang Ying <ying.huang@intel.com>,
	Hugh Dickins <hughd@google.com>, Rik van Riel <riel@surriel.com>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: shmem_recalc_inode: unable to handle kernel NULL pointer dereference
Date: Mon, 25 Mar 2019 18:08:37 -0400
Message-ID: <CANaguZB8szw13MkaiT9kcN8Fux6hYZnuD-p6_OPve6n2fOTuoQ@mail.gmail.com> (raw)
In-Reply-To: <1553440122.7s759munpm.astroid@alex-desktop.none>

On Sun, Mar 24, 2019 at 11:30 AM Alex Xu (Hello71) <alex_y_xu@yahoo.ca> wrote:
>
> I get this BUG in 5.1-rc1 sometimes when powering off the machine. I
> suspect my setup erroneously executes two swapoff+cryptsetup close
> operations simultaneously, so a race condition is triggered.
>
> I am using a single swap on a plain dm-crypt device on a MBR partition
> on a SATA drive.
>
> I think the problem is probably related to
> b56a2d8af9147a4efe4011b60d93779c0461ca97, so CCing the related people.
>
Could you please provide more information on this - stack trace, dmesg etc?
Is it easily reproducible? If yes, please detail the steps so that I
can try it inhouse.

Thanks,
Vineeth

  reply index

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-24 15:30 Alex Xu (Hello71)
2019-03-25 22:08 ` Vineeth Pillai [this message]
2019-03-31 16:15   ` Alex Xu (Hello71)
2019-03-31 19:21     ` Hugh Dickins
2019-04-03  0:30       ` Hugh Dickins
2019-04-05  2:12         ` Hugh Dickins
2019-04-05  9:41           ` Konstantin Khlebnikov
2019-04-08  6:05             ` Hugh Dickins
2019-04-08  7:19               ` Konstantin Khlebnikov
2019-04-08 17:26                 ` Hugh Dickins

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