From: Alexei Starovoitov <a...@fb.com> Date: Sat, 3 Dec 2016 12:31:33 -0800
> From: Gianluca Borello <g.bore...@gmail.com> > > Occasionally, clang (e.g. version 3.8.1) translates a sum between two > constant operands using a BPF_OR instead of a BPF_ADD. The verifier is > currently not handling this scenario, and the destination register type > becomes UNKNOWN_VALUE even if it's still storing a constant. As a result, > the destination register cannot be used as argument to a helper function > expecting a ARG_CONST_STACK_*, limiting some use cases. > > Modify the verifier to handle this case, and add a few tests to make sure > all combinations are supported, and stack boundaries are still verified > even with BPF_OR. > > Signed-off-by: Gianluca Borello <g.bore...@gmail.com> > Signed-off-by: Alexei Starovoitov <a...@kernel.org> Applied, but... > diff --git a/tools/testing/selftests/bpf/.gitignore > b/tools/testing/selftests/bpf/.gitignore > index 3c59f96e3ed8..071431bedde8 100644 > --- a/tools/testing/selftests/bpf/.gitignore > +++ b/tools/testing/selftests/bpf/.gitignore > @@ -1,2 +1,3 @@ > test_verifier > test_maps > +test_lru_map This had nothing to do with this change, nor was it mentioned in the commit message. Please do not do this in the future.
