Re: [RFC][PATCHSET] iov_iter work

[Qian Cai]

On 6/10/2021 11:35 AM, Al Viro wrote:
> On Thu, Jun 10, 2021 at 10:29:59AM -0400, Qian Cai wrote:
> 
>> Al, a quick fuzzing on today's linux-next triggered this. I never saw this before, so I am wondering if this is anything to do with this series. I could try to narrow it down and bisect if necessary. Any thoughts?
> 
> Do you have a reproducer?

I have no idea how reproducible this is, but it was triggered by running the fuzzing within a half-hour.

$ trinity -C 16

> call of memcpy_from_skb(), calling copy_from_iter_full(), which
> calls iov_iter_revert() on failure now...
> 
> Bloody hell.  Incremental, to be folded in:

This patch is running good so far. I'll report back if things changed.