Subject: Re: net/ipv4/fib_trie.c:1550 suspicious rcu_dereference_check() usage

From: Alexander Duyck <[email-masked]>
Date: Tue, 10 Mar 2015 09:41:35 -0700

On 03/10/2015 09:20 AM, Fabio Estevam wrote:
> On Tue, Mar 10, 2015 at 1:19 AM, Fabio Estevam <[email-masked]> wrote:
>> Hi,
>>
>> On a imx6sl-warp board running linux-next 20150306:
>>
>> root@imx6sl-warp:~# reboot
>>
>> The system is going down for reboot NOW!(ttymxc0) (Wed Feb 25 18:41:59 2015):
>> INIT: Switching to runlevel: 6
>> INIT: Sending processes the TERM signal
>> INIT: Sending processe Stopping syslogd/klogd: stopped syslogd (pid 301)
>> stopped klogd (pid 304)
>> done
>> Deconfiguring network interfaces... [   36.083246]
>> [   36.084753] ===============================
>> [   36.089026] [ INFO: suspicious RCU usage. ]
>> [   36.093217] 4.0.0-rc2-next-20150306-00003-g62c7037-dirty #2699 Not tainted
> It seems that the issue is gone in linux-next 20150310.

I'll look into it just to make sure.  It likely means that there was a 
bug in the first set of patches that were accepted in the first half of 
last week that was likely resolved when the second set was accepted.

- Alex