On Mon, 2024-03-18 at 09:52 -0700, Stanislav Fomichev wrote: > On 03/16, Xu Kuohai wrote: > > From: Xu Kuohai <xukuohai@xxxxxxxxxx> > > > > A bpf prog returning positive number attached to file_alloc_security hook > > will make kernel panic. > > I'll leave it up to KP. I remember there was a similar patch series in > the past, but I have no state on why it was not accepted.. Yes, this one: v1: https://lore.kernel.org/bpf/20221115175652.3836811-1-roberto.sassu@xxxxxxxxxxxxxxx/ v2: https://lore.kernel.org/bpf/20221207172434.435893-1-roberto.sassu@xxxxxxxxxxxxxxx/ The selftests were failing, and I wasn't able to come up with a solution on the verifier side. I see patch 5 goes in that direction, and I remember there was related work in this area. (just saw Paul's answer, maybe the new KP's patch set also solves this) Roberto
