From: Lukas Bulwahn <lukas.bulwahn@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>,
Alan Stern <stern@rowland.harvard.edu>,
Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
linux-kernel@vger.kernel.org, linux-safety@lists.elisa.tech,
linux-usb@vger.kernel.org
Subject: Re: [linux-safety] [PATCH] usb: host: ehci-sched: add comment about find_tt() not returning error
Date: Tue, 13 Oct 2020 07:41:40 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.21.2010130737430.14590@felia> (raw)
In-Reply-To: <20201013052150.GA330398@kroah.com>
On Tue, 13 Oct 2020, Greg Kroah-Hartman wrote:
> On Mon, Oct 12, 2020 at 08:17:34PM +0200, Lukas Bulwahn wrote:
> > > If you are suggesting some sort of special code annotation that the tool
> > > would understand, I am open to that. But I'm not aware of any even
> > > vaguely standard way of marking up a particular function call to
> > > indicate it will not return an error.
> >
> > I cannot yet say if some annotation would work, we, Sudip and me, need to
> > investigate. It could be that something like, assert(!IS_ERR(tt)), is
> > sufficient to let the tools know that they can safely assume that the
> > path they are complaining about is not possible.
> >
> > We could make the assert() a nop, so it would not effect the resulting
> > object code in any way.
>
> Things like assert() have been rejected numberous times in the past in
> the kernel, good luck with that :)
>
Greg, we have been warned by you now; so, we are well aware what could
await us just as numerous others before.
Lukas
next prev parent reply other threads:[~2020-10-13 5:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-11 20:50 [PATCH] usb: host: ehci-sched: add comment about find_tt() not returning error Sudip Mukherjee
2020-10-12 0:27 ` Alan Stern
2020-10-12 14:11 ` [linux-safety] " Lukas Bulwahn
2020-10-12 14:57 ` Alan Stern
2020-10-12 15:10 ` Lukas Bulwahn
2020-10-12 15:18 ` Greg Kroah-Hartman
2020-10-12 18:25 ` Lukas Bulwahn
2020-10-13 5:23 ` Greg Kroah-Hartman
2020-10-13 5:37 ` Lukas Bulwahn
2020-10-13 6:36 ` Greg Kroah-Hartman
2020-10-13 7:16 ` Lukas Bulwahn
2020-10-13 7:35 ` Greg Kroah-Hartman
2020-10-13 8:02 ` Lukas Bulwahn
2020-10-13 8:24 ` Sudip Mukherjee
2020-10-13 8:36 ` Lukas Bulwahn
2020-10-12 16:00 ` Alan Stern
2020-10-12 18:17 ` Lukas Bulwahn
2020-10-13 5:21 ` Greg Kroah-Hartman
2020-10-13 5:41 ` Lukas Bulwahn [this message]
2020-10-12 15:24 ` Sudip Mukherjee
2020-10-12 18:49 ` Lukas Bulwahn
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