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authorLorenz Bauer <lmb@cloudflare.com>2020-06-08 10:42:57 +0100
committerAlexei Starovoitov <ast@kernel.org>2020-06-09 11:05:49 -0700
commit21a85bd601ee50f2796d52c542c46d04e21cedac (patch)
tree9e036569cfb1ee0a84906d2357d91e1e3a9357d0 /drivers/s390
parent75e68e5bf2c7fa9d3e874099139df03d5952a3e1 (diff)
downloadlinux-21a85bd601ee50f2796d52c542c46d04e21cedac.tar.bz2
scripts: Require pahole v1.16 when generating BTF
bpf_iter requires the kernel BTF to be generated with pahole >= 1.16, since otherwise the function definitions that the iterator attaches to are not included. This failure mode is indistiguishable from trying to attach to an iterator that really doesn't exist. Since it's really easy to miss this requirement, bump the pahole version check used at build time to at least 1.16. Fixes: 15d83c4d7cef ("bpf: Allow loading of a bpf_iter program") Suggested-by: Ivan Babrou <ivan@cloudflare.com> Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200608094257.47366-1-lmb@cloudflare.com
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