Messages in this thread | | | Date | Wed, 08 Nov 2017 03:28:34 +0100 | From | Daniel Borkmann <> | Subject | Re: [PATCH 1/2] bpf: add a bpf_override_function helper |
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On 11/07/2017 09:28 PM, Josef Bacik wrote: > From: Josef Bacik <jbacik@fb.com> > > Error injection is sloppy and very ad-hoc. BPF could fill this niche > perfectly with it's kprobe functionality. We could make sure errors are > only triggered in specific call chains that we care about with very > specific situations. Accomplish this with the bpf_override_funciton > helper. This will modify the probe'd callers return value to the > specified value and set the PC to an override function that simply > returns, bypassing the originally probed function. This gives us a nice > clean way to implement systematic error injection for all of our code > paths. > > Acked-by: Alexei Starovoitov <ast@kernel.org> > Signed-off-by: Josef Bacik <jbacik@fb.com>
BPF bits:
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
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