selftests/bpf: synthetic tests to push verifier limits

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Add a test to generate 1m ld_imm64 insns to stress the verifier.

Bump the size of fill_ld_abs_vlan_push_pop test from 4k to 29k
and jump_around_ld_abs from 4k to 5.5k.
Larger sizes are not possible due to 16-bit offset encoding
in jump instructions.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Alexei Starovoitov 2019-04-01 21:27:49 -07:00 • committed by Daniel Borkmann

parent e5e7a8f2d8

commit 8aa2d4b4b9

2 changed files with 35 additions and 9 deletions

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35

tools/testing/selftests/bpf/test_verifier.c

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9

tools/testing/selftests/bpf/verifier/ld_dw.c

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