netdev - Re: [Patch net-next 1/2] net_sched: fix errno in tcindex_set

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5424B2F6.4060201@intel.com>
Date:	Thu, 25 Sep 2014 17:27:34 -0700
From:	John Fastabend <john.r.fastabend@...el.com>
To:	John Fastabend <john.fastabend@...il.com>
CC:	Cong Wang <xiyou.wangcong@...il.com>, netdev@...r.kernel.org,
	davem@...emloft.net
Subject: Re: [Patch net-next 1/2] net_sched: fix errno in tcindex_set_parms()

On 09/25/2014 03:57 PM, John Fastabend wrote:
> On 09/25/2014 02:07 PM, John Fastabend wrote:
>> On 09/25/2014 12:06 PM, Cong Wang wrote:
>>> When kmemdup() fails, we should return -ENOMEM.
>>>
>>> Cc: John Fastabend <john.fastabend@...il.com>
>>> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>
>>> ---
>>
>> Acked-by: John Fastabend <john.r.fastabend@...el.com>
>>
>> Thanks Cong.
>>
> 
> Related to this we should probably push error messages
> from the dump routines correctly. If you see u32_dump()
> returns a -EINVAL even though it was due to a memory
> allocation failure. This is not necessarily due to my
> patches though I think the error returning from dump
> has always been a simple -1 value.
> 
> I'll take a look at it, unless you beat me to it, after
> I finish up the percpu stats which I'm doing now.
> 
> .John
> 

Also just in case you hit them, there is an suspicious
rcu usage from qdisc_watchdog and another from task_csl_state()
call in cls_cgroup.

The qdisc_watchdog is due to the annotation on the qdisc
and I'm not entirely convinced the cls_cgroup hasn't been
there all along.

I'm looking into them but most likely wont figure it out
tonight as I have to take off for a bit.

Thanks,
John
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html