From: Quan Nguyen <quan@os.amperecomputing.com>
To: Dan Carpenter <dan.carpenter@oracle.com>,
Wolfram Sang <wsa@kernel.org>, Corey Minyard <minyard@acm.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
Joel Stanley <joel@jms.id.au>, Andrew Jeffery <andrew@aj.id.au>,
Brendan Higgins <brendanhiggins@google.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
openipmi-developer@lists.sourceforge.net,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
linux-i2c@vger.kernel.org, openbmc@lists.ozlabs.org,
Open Source Submission <patches@amperecomputing.com>,
Phong Vo <phong@os.amperecomputing.com>,
"Thang Q . Nguyen" <thang@os.amperecomputing.com>
Subject: Re: [PATCH v6 3/4] ipmi: ssif_bmc: Return -EFAULT if copy_from_user() fails
Date: Thu, 17 Mar 2022 14:45:19 +0700 [thread overview]
Message-ID: <db5a879e-5e2f-24f0-c0fb-4971679a45cb@os.amperecomputing.com> (raw)
In-Reply-To: <YirzJj/BBUQTbKS3@ninjato>
Added Dan as I have missed Dan's email address in the first place.
My apologize,
- Quan
On 11/03/2022 13:58, Wolfram Sang wrote:
> On Thu, Mar 10, 2022 at 06:41:18PM +0700, Quan Nguyen wrote:
>> From: Dan Carpenter <dan.carpenter@oracle.com>
>>
>> The copy_from_user() function returns the number of bytes remaining to
>> be copied but we should return -EFAULT here.
>>
>> Fixes: 501c25b59508 ("ipmi: ssif_bmc: Add SSIF BMC driver")
>> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>> Signed-off-by: Corey Minyard <cminyard@mvista.com>
>> Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
>
> It is nice that you want to keep this patch seperate to give Dan
> credits, but I still think it should be merged into patch 1, so the
> initial driver is as flawless as it can be. You could give Dan still
> credits by mentioning him in the commit message IMO. Dan, would you be
> fine with this?
>
>> v6:
>> + New add in v6, thanks Dan for the patch [Dan]
>>
>> drivers/char/ipmi/ssif_bmc.c | 5 ++---
>> 1 file changed, 2 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/char/ipmi/ssif_bmc.c b/drivers/char/ipmi/ssif_bmc.c
>> index 62db97773654..91ac2cae756e 100644
>> --- a/drivers/char/ipmi/ssif_bmc.c
>> +++ b/drivers/char/ipmi/ssif_bmc.c
>> @@ -87,9 +87,8 @@ static ssize_t ssif_bmc_write(struct file *file, const char __user *buf, size_t
>> if (count > sizeof(struct ssif_msg))
>> return -EINVAL;
>>
>> - ret = copy_from_user(&msg, buf, count);
>> - if (ret)
>> - return ret;
>> + if (copy_from_user(&msg, buf, count))
>> + return -EFAULT;
>>
>> if (!msg.len || count < ssif_msg_len(&msg))
>> return -EINVAL;
>> --
>> 2.35.1
>>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-03-17 7:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-10 11:41 [PATCH v6 0/4] Add SSIF BMC driver Quan Nguyen
2022-03-10 11:41 ` [PATCH v6 1/4] ipmi: ssif_bmc: " Quan Nguyen
2022-03-11 1:19 ` Corey Minyard
2022-03-17 8:30 ` Quan Nguyen
2022-03-17 13:13 ` Corey Minyard
2022-04-08 4:40 ` Quan Nguyen
2022-03-11 6:20 ` kernel test robot
2022-03-14 18:15 ` Jae Hyun Yoo
2022-03-17 9:00 ` Quan Nguyen
2022-03-10 11:41 ` [PATCH v6 2/4] bindings: ipmi: Add binding for " Quan Nguyen
2022-03-10 11:41 ` [PATCH v6 3/4] ipmi: ssif_bmc: Return -EFAULT if copy_from_user() fails Quan Nguyen
2022-03-11 6:58 ` Wolfram Sang
2022-03-17 7:45 ` Quan Nguyen [this message]
2022-03-17 8:38 ` Dan Carpenter
2022-03-10 11:41 ` [PATCH v6 4/4] i2c: aspeed: Assert NAK when slave is busy Quan Nguyen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=db5a879e-5e2f-24f0-c0fb-4971679a45cb@os.amperecomputing.com \
--to=quan@os.amperecomputing.com \
--cc=andrew@aj.id.au \
--cc=benh@kernel.crashing.org \
--cc=brendanhiggins@google.com \
--cc=dan.carpenter@oracle.com \
--cc=devicetree@vger.kernel.org \
--cc=joel@jms.id.au \
--cc=krzysztof.kozlowski@canonical.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-aspeed@lists.ozlabs.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=minyard@acm.org \
--cc=openbmc@lists.ozlabs.org \
--cc=openipmi-developer@lists.sourceforge.net \
--cc=patches@amperecomputing.com \
--cc=phong@os.amperecomputing.com \
--cc=robh+dt@kernel.org \
--cc=thang@os.amperecomputing.com \
--cc=wsa@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).