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From: Matthew Wilcox <willy@infradead.org>
To: Anmol Karn <anmol.karan123@gmail.com>
Cc: linux-fsdevel@vger.kernel.org,
	linux-kernel-mentees@lists.linuxfoundation.org,
	linux-kernel@vger.kernel.org,
	syzbot+f7204dcf3df4bb4ce42c@syzkaller.appspotmail.com
Subject: Re: [Linux-kernel-mentees] [PATCH] idr: remove WARN_ON_ONCE() when trying to check id
Date: Mon, 14 Sep 2020 12:08:03 +0100	[thread overview]
Message-ID: <20200914110803.GL6583@casper.infradead.org> (raw)
In-Reply-To: <20200914071724.202365-1-anmol.karan123@gmail.com>

On Mon, Sep 14, 2020 at 12:47:24PM +0530, Anmol Karn wrote:
> idr_get_next() gives WARN_ON_ONCE() when it gets (id > INT_MAX) true
> and this happens when syzbot does fuzzing, and that warning is
> expected, but WARN_ON_ONCE() is not required here and, cecking
> the condition and returning NULL value would be suffice.
> 
> Reference: commit b9959c7a347 ("filldir[64]: remove WARN_ON_ONCE() for bad directory entries")
> Reported-and-tested-by: syzbot+f7204dcf3df4bb4ce42c@syzkaller.appspotmail.com
> Link: https://syzkaller.appspot.com/bug?extid=f7204dcf3df4bb4ce42c 
> Signed-off-by: Anmol Karn <anmol.karan123@gmail.com>

https://lore.kernel.org/netdev/20200605120037.17427-1-willy@infradead.org/
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  reply	other threads:[~2020-09-14 11:08 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-14  7:17 Anmol Karn
2020-09-14 11:08 ` Matthew Wilcox [this message]
2020-09-14 18:47   ` Anmol Karn
2020-09-14 19:26     ` Matthew Wilcox
2020-09-15  5:13       ` Anmol Karn
2020-09-15  5:26         ` Eric Biggers
2020-09-15  5:51           ` Anmol Karn

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