From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
Namjae Jeon <linkinjeon@kernel.org>,
Steve French <sfrench@samba.org>,
Hyunchul Lee <hyc.lee@gmail.com>,
linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] ksmbd: remove unnecessary conditions
Date: Tue, 7 Sep 2021 19:34:33 +0900 [thread overview]
Message-ID: <YTdAOWa/vLEhWQVt@google.com> (raw)
In-Reply-To: <20210907101705.GH1935@kadam>
On (21/09/07 13:17), Dan Carpenter wrote:
> > >
> > > But you've seen it now, right?
> >
> > A linear search in array of 5 elements or a binary search in array of 340
> > elements? Yea, I saw it. I'd prefer one extra uid_valid(), if you'd ask
> > me - why call the function if we already know that it'll fail.
>
> It's a failure path. Hopefully people will only give us valid data.
>
I usually prefer to assume that remote clients are _not exactly_ nice folks.
Can this be a DoS vector - probably not. `cmp; je;` is several thousand
times cheaper that a bsearch, and this is a remote user request servicing
path. So. Just my 5 cents.
I'll leave it to you and Namjae to decide.
prev parent reply other threads:[~2021-09-07 10:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-07 7:34 [PATCH] ksmbd: remove unnecessary conditions Dan Carpenter
2021-09-07 8:06 ` Sergey Senozhatsky
2021-09-07 8:54 ` Dan Carpenter
2021-09-07 9:04 ` Sergey Senozhatsky
2021-09-07 9:14 ` Dan Carpenter
2021-09-07 9:59 ` Sergey Senozhatsky
2021-09-07 10:17 ` Dan Carpenter
2021-09-07 10:34 ` Sergey Senozhatsky [this message]
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