Re: INFO: rcu detected stall in ndisc_alloc_skb

[Tetsuo Handa]

On 2018/12/31 17:24, Dmitry Vyukov wrote:
>>> Since this involves OOMs and looks like a one-off induced memory corruption:
>>>
>>> #syz dup: kernel panic: corrupted stack end in wb_workfn
>>>
>>
>> Why?
>>
>> RCU stall in this case is likely to be latency caused by flooding of printk().
> 
> Just a hypothesis. OOMs lead to arbitrary memory corruptions, so can
> cause stalls as well. But can be what you said too. I just thought
> that cleaner dashboard is more useful than a large assorted pile of
> crashes. If you think it's actionable in some way, feel free to undup.
> 

We don't know why bpf tree is hitting this problem.
Let's continue monitoring this problem.

#syz undup