From: "Jörn Engel" <joern@barelysecure.org>
To: syzbot <syzbot+b320a4d5f65a61dbbf89@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
miquel.raynal@bootlin.com, richard@nod.at,
syzkaller-bugs@googlegroups.com, vigneshr@ti.com,
Fabian Frederick <fabf@skynet.be>
Subject: Re: [syzbot] [mtd?] divide error in block2mtd_setup2
Date: Mon, 10 Aug 2026 09:27:03 -0700 [thread overview]
Message-ID: <ann719YIqopUBCv5@cashel.logfs.org> (raw)
In-Reply-To: <ankxaiwtTltL0xMj@cashel.logfs.org>
On Sun, Aug 09, 2026 at 07:03:22PM -0700, Jörn Engel wrote:
>
> Best guess would be this:
>
> if ((long)size % erase_size) {
While at it, what purpose does the cast to (long) serve?
As far as I can see, it is useless and should be removed. Fabian, do
you remember why it was necessary?
Jörn
--
The real voyage of discovery consists not in seeking new landscapes,
but in having new eyes.
-- Marcel Proust
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Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
From: "Jörn Engel" <joern@barelysecure.org>
To: syzbot <syzbot+b320a4d5f65a61dbbf89@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
miquel.raynal@bootlin.com, richard@nod.at,
syzkaller-bugs@googlegroups.com, vigneshr@ti.com,
Fabian Frederick <fabf@skynet.be>
Subject: Re: [syzbot] [mtd?] divide error in block2mtd_setup2
Date: Mon, 10 Aug 2026 09:27:03 -0700 [thread overview]
Message-ID: <ann719YIqopUBCv5@cashel.logfs.org> (raw)
In-Reply-To: <ankxaiwtTltL0xMj@cashel.logfs.org>
On Sun, Aug 09, 2026 at 07:03:22PM -0700, Jörn Engel wrote:
>
> Best guess would be this:
>
> if ((long)size % erase_size) {
While at it, what purpose does the cast to (long) serve?
As far as I can see, it is useless and should be removed. Fabian, do
you remember why it was necessary?
Jörn
--
The real voyage of discovery consists not in seeking new landscapes,
but in having new eyes.
-- Marcel Proust
next prev parent reply other threads:[~2026-08-10 16:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-10 0:34 [syzbot] [mtd?] divide error in block2mtd_setup2 syzbot
2026-08-10 0:34 ` syzbot
2026-08-10 2:03 ` Jörn Engel
2026-08-10 2:03 ` Jörn Engel
2026-08-10 9:17 ` Pei Xiao
2026-08-10 9:17 ` Pei Xiao
2026-08-10 12:40 ` Miquel Raynal
2026-08-10 12:40 ` Miquel Raynal
2026-08-11 3:02 ` Pei Xiao
2026-08-11 3:02 ` Pei Xiao
2026-08-10 16:27 ` Jörn Engel [this message]
2026-08-10 16:27 ` Jörn Engel
2026-08-11 1:21 ` Pei Xiao
2026-08-11 1:21 ` Pei Xiao
2026-08-10 9:12 ` [PATCH] mtd: block2mtd: Fix divide error when erase_size is zero Pei Xiao
2026-08-10 9:12 ` Pei Xiao
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