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.
