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Date: Mon, 13 Jun 2022 16:54:07 +0900
From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
	Minchan Kim <minchan@kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
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	linux-block <linux-block@vger.kernel.org>,
	regressions@lists.linux.dev, Jens Axboe <axboe@kernel.dk>,
	Nitin Gupta <ngupta@vflare.org>
Subject: Re: qemu-arm: zram: mkfs.ext4 : Unable to handle kernel NULL pointer
 dereference at virtual address 00000140
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In-Reply-To: <CA+G9fYvjpCOcTVdpnHTOWaf3KcDeTM3Njn_NnXvU37ppoHH5uw@mail.gmail.com>

Hello,

On (22/06/12 20:56), Naresh Kamboju wrote:
> 
> I have tested this patch and the reported issue got resolved [1].
>

Many thanks for the tests.

Quite honestly I was hoping that the patch would not help :) Well, ok,
we now know that it's mapping area lock and the lockdep part of its
memory is zero-ed out. The question is - "why?" It really should not
be zeroed out.