From: Stephen Boyd <sboyd@codeaurora.org>
To: Joe Perches <joe@perches.com>
Cc: Miche Baker-Harvey <miche@google.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Greg Kroah-Hartman <gregkh@suse.de>,
linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com,
Amit Shah <amit.shah@redhat.com>,
Anton Blanchard <anton@samba.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
virtualization@lists.linux-foundation.org
Subject: Re: [PATCH] VirtioConsole support.
Date: Fri, 28 Oct 2011 11:19:40 -0700 [thread overview]
Message-ID: <4EAAF23C.8050102@codeaurora.org> (raw)
In-Reply-To: <1319770558.2529.20.camel@Joe-Laptop>
On 10/27/11 19:55, Joe Perches wrote:
>
> @@ -845,6 +857,19 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno, int data,
> kref_init(&hp->kref);
>
> INIT_WORK(&hp->tty_resize, hvc_set_winsz);
> + /*
> + * make each console its own struct console.
> + * No need to do allocation and copy under lock.
> + */
> + cp = kzalloc(sizeof(*cp), GFP_KERNEL);
> + if (!cp) {
> + kfree(hp);
> + mutex_unlock(&hvc_ports_mutex);
> + return ERR_PTR(-ENOMEM);
> + }
> + memcpy(cp, &hvc_console, sizeof(*cp));
> The kzalloc should be kmalloc as the allocated
> memory is immediately overwritten.
Even better would be kmemdup().
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2011-10-28 18:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-27 5:30 Regression: patch " hvc_console: display printk messages on console." causing infinite loop with 3.2-rc0 + Xen Konrad Rzeszutek Wilk
2011-10-27 5:34 ` Konrad Rzeszutek Wilk
2011-10-27 5:48 ` Greg KH
[not found] ` <CAB8Rdaq2r4Uc-WZK-k=wiEW8DKdixn+9dB7E4_XDL7k8jCMwSw@mail.gmail.com>
2011-10-27 14:50 ` Fwd: " Miche Baker-Harvey
2011-10-27 15:08 ` Konrad Rzeszutek Wilk
2011-10-27 15:31 ` Konrad Rzeszutek Wilk
2011-10-27 17:22 ` Miche Baker-Harvey
2011-10-27 17:35 ` Konrad Rzeszutek Wilk
2011-10-27 18:39 ` [PATCH] VirtioConsole support Miche Baker-Harvey
2011-10-27 21:15 ` Konrad Rzeszutek Wilk
2011-10-31 9:55 ` Amit Shah
2011-10-27 21:43 ` Miche Baker-Harvey
2011-10-27 21:55 ` Konrad Rzeszutek Wilk
2011-10-28 16:27 ` Greg KH
2011-10-28 2:55 ` Joe Perches
2011-10-28 18:19 ` Stephen Boyd [this message]
2011-11-02 22:02 ` Rusty Russell
2011-11-03 12:38 ` Christian Borntraeger
2011-11-03 14:15 ` Konrad Rzeszutek Wilk
2011-11-02 1:13 ` Regression: patch " hvc_console: display printk messages on console." causing infinite loop with 3.2-rc0 + Xen Stephen Rothwell
2011-11-03 1:30 ` Greg KH
2011-11-07 6:19 ` Stephen Rothwell
2011-11-07 20:24 ` Greg KH
2011-10-31 7:48 ` Rusty Russell
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