linux-kernel - Re: BUG: divide error in ubi_attach_mtd

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Message-ID: <977347543.226888.1682011999468.JavaMail.zimbra@nod.at>
Date:   Thu, 20 Apr 2023 19:33:19 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Yu Hao <yhao016@....edu>
Cc:     chengzhihao1 <chengzhihao1@...wei.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: BUG: divide error in ubi_attach_mtd_dev

----- 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