linux-kernel - Re: kernel BUG in __put_mtd

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Message-ID: <89021294.889167.1690781715755.JavaMail.zimbra@nod.at>
Date:   Mon, 31 Jul 2023 07:35:15 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Zheng Zhang <zheng.zhang@...il.ucr.edu>
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Alexander Usyskin <alexander.usyskin@...el.com>,
        Tomas Winkler <tomas.winkler@...el.com>,
        Vitaly Lubart <vitaly.lubart@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Zhang Xiaoxu <zhangxiaoxu5@...wei.com>
Subject: Re: kernel BUG in __put_mtd_device

----- Ursprüngliche Mail -----
> Von: "Zheng Zhang" <zheng.zhang@...il.ucr.edu>
> An: "Miquel Raynal" <miquel.raynal@...tlin.com>, "richard" <richard@....at>, "Vignesh Raghavendra" <vigneshr@...com>,
> "linux-mtd" <linux-mtd@...ts.infradead.org>, "linux-kernel" <linux-kernel@...r.kernel.org>
> Gesendet: Montag, 31. Juli 2023 01:27:09
> Betreff: kernel BUG in __put_mtd_device

> Miquel, Richard, Vignesh  and  to whom it may concern:
> 
> Hello! We have found a bug in MTD driver in the Linux kernel version 6.2.0
> by Syzkaller with our own templates.
> It's triggered for multiple times. Unfortunately, it doesn't generate a
> reproducer.
> Attached is the report, log generated by syzkaller.
> Please let me know if there is any additional information that I can
> provide to help debug this issue.

Isn't this related to "[PATCH] mtd: fix use-after-free in mtd release"?

Thanks,
//richard