Re: kernel BUG in __put_mtd_device

Re: kernel BUG in __put_mtd_device

[Miquel Raynal]

Hi Richard,

richard@nod.at wrote on Mon, 31 Jul 2023 07:35:15 +0200 (CEST):

> ----- Ursprüngliche Mail -----
> > Von: "Zheng Zhang" <zheng.zhang@email.ucr.edu>
> > An: "Miquel Raynal" <miquel.raynal@bootlin.com>, "richard" <richard@nod.at>, "Vignesh Raghavendra" <vigneshr@ti.com>,
> > "linux-mtd" <linux-mtd@lists.infradead.org>, "linux-kernel" <linux-kernel@vger.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"?

Yes, probably, we received two patches regarding the same issue, but so
far no agreement on them because none fully fixes the issue
apparently...

Thanks,
Miquèl

______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

Re: kernel BUG in __put_mtd_device

[Miquel Raynal]

Hi Zheng,

zheng.zhang@email.ucr.edu wrote on Mon, 31 Jul 2023 16:58:49 -0700:

> Could you tell me the base Linux version of this patch? It seems that the
> context is not consistent with 6.2 or newest version v6.5.rc4
> Thanks

mtd/next, where new changes have been brought to these functions

https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git/log/?h=mtd/next

Thanks,
Miquèl

______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/