11141
39%

Ran 04 Oct 2019 02:52AM UTC

Jobs 1

Files 443

Run time 34s

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Committed 04 Oct 2019 02:32AM UTC coverage: 45.483% (-0.04%) from 45.527%

Build # 11141

Build Type

push

travis-ci-com

Committed by

ianvernon

Commit Message

bpf: Fix sockops compile on newer LLVM

Older versions of Clang/LLVM (7.0 and earlier) compile this line into a
32-bit read followed by a shift:

  r8 = *(u32 *)(r6 + 64)
  r8 >>= 16

Newer versions of Clang/LLVM will compile this instead into a single
16-bit read into an offset from the context like this:

  r8 = *(u16 *)(r6 + 66)

Unfortunately, the kernel verifier (at least as of v5.0, possibly newer)
does not currently support reads into 'struct bpf_sock_ops' at such
offsets, which leads to verifier errors when attempting to load the
program when compiled on newer compilers.

Fix it by forcing a 32-bit read and shifting it.

Signed-off-by: Joe Stringer <joe@cilium.io>

Coverage Stats

25831 of 56793 relevant lines covered (45.48%)

1195.38 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	11141.1	04 Oct 2019 02:52AM UTC	0	45.48	Travis Job 11141.1

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