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Daniel Borkmann authored
Given bpf_probe_read{,str}() BPF helpers are now only available under CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE, we need to add the drop-in replacements of bpf_probe_read_{kernel,user}_str() to do_refine_retval_range() as well to avoid hitting the same issue as in 849fa506 ("bpf/verifier: refine retval R0 state for bpf_get_stack helper"). Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
John Fastabend <john.fastabend@gmail.com> Acked-by:
Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200515101118.6508-3-daniel@iogearbox.net
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