Re: [PATCH v2 net-next 2/5] bpf/verifier: when pruning a branch, ignore its write marks
From: Alexei Starovoitov via iovisor-dev <hidden>
Date: 2017-08-23 14:42:27
On 8/23/17 7:10 AM, Edward Cree wrote:
The fact that writes occurred in reaching the continuation state does
not screen off its reads from us, because we're not really its parent.
So detect 'not really the parent' in do_propagate_liveness, and ignore
write marks in that case.
Fixes: dc503a8ad984 ("bpf/verifier: track liveness for pruning")
Signed-off-by: Edward Cree <ecree-s/n/eUQHGBpZroRs9YW3xA@public.gmane.org>Acked-by: Alexei Starovoitov <redacted>