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Date:   Thu, 20 Apr 2023 19:33:19 +0200 (CEST)
From:   Richard Weinberger <richard@nod.at>
To:     Yu Hao <yhao016@ucr.edu>
Cc:     chengzhihao1 <chengzhihao1@huawei.com>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        linux-mtd <linux-mtd@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
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Subject: Re: BUG: divide error in ubi_attach_mtd_dev
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Thread-Topic: divide error in ubi_attach_mtd_dev
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----- Ursprüngliche Mail -----
> The kernel is in qemu. We find that the `mtd` is from
> `mtd = get_mtd_device(NULL, req.mtd_num);` in function `ctrl_cdev_ioctl`.
> And we are still trying to figure out what MTD is.

Can you please share the qemu command line?

Within Linux you can query /proc/mtd or /sys/class/mtd/
to get infos about the MTD in question.

Thanks,
//richard