Re: [bpf PATCH] bpf, sockmap: RCU splat with TLS redirect and strparser

[Martin KaFai Lau]

On Wed, Jun 24, 2020 at 02:09:23PM -0700, John Fastabend wrote:
> Redirect on non-TLS sockmap side has RCU lock held from sockmap code
> path but when called from TLS this is no longer true. The RCU section
> is needed because we use rcu dereference to fetch the psock of the
> socket we are redirecting to.
sk_psock_verdict_apply() is also called by sk_psock_strp_read() after
rcu_read_unlock().  This issue should not be limited to tls?