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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/bpf/verifier/dead_code.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/dead_code.c')
-rw-r--r-- | tools/testing/selftests/bpf/verifier/dead_code.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/dead_code.c b/tools/testing/selftests/bpf/verifier/dead_code.c new file mode 100644 index 000000000..721ec9391 --- /dev/null +++ b/tools/testing/selftests/bpf/verifier/dead_code.c @@ -0,0 +1,161 @@ +{ + "dead code: start", + .insns = { + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_LDX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 10, -4), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "R9 !read_ok", + .result_unpriv = REJECT, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: mid 1", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 10, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: mid 2", + .insns = { + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), + BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 4), + BPF_JMP_IMM(BPF_JSET, BPF_REG_0, 1, 1), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .retval = 1, +}, +{ + "dead code: end 1", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 10, 1), + BPF_EXIT_INSN(), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: end 2", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 10, 1), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_0, 12), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: end 3", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 8, 1), + BPF_EXIT_INSN(), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 10, 1), + BPF_JMP_IMM(BPF_JA, 0, 0, 1), + BPF_MOV64_IMM(BPF_REG_0, 12), + BPF_JMP_IMM(BPF_JA, 0, 0, -5), + }, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: tail of main + func", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 8, 1), + BPF_EXIT_INSN(), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_0, 12), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "function calls to other bpf functions are allowed for", + .result_unpriv = REJECT, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: tail of main + two functions", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 8, 1), + BPF_EXIT_INSN(), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), + BPF_EXIT_INSN(), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_0, 12), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "function calls to other bpf functions are allowed for", + .result_unpriv = REJECT, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: function in the middle and mid of another func", + .insns = { + BPF_MOV64_IMM(BPF_REG_1, 7), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_0, 12), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_0, 7), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 7, 1), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, -5), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "function calls to other bpf functions are allowed for", + .result_unpriv = REJECT, + .result = ACCEPT, + .retval = 7, +}, +{ + "dead code: middle of main before call", + .insns = { + BPF_MOV64_IMM(BPF_REG_1, 2), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 2, 1), + BPF_MOV64_IMM(BPF_REG_1, 5), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_REG(BPF_REG_0, BPF_REG_1), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "function calls to other bpf functions are allowed for", + .result_unpriv = REJECT, + .result = ACCEPT, + .retval = 2, +}, +{ + "dead code: start of a function", + .insns = { + BPF_MOV64_IMM(BPF_REG_1, 2), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), + BPF_EXIT_INSN(), + BPF_JMP_IMM(BPF_JA, 0, 0, 0), + BPF_MOV64_REG(BPF_REG_0, BPF_REG_1), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "function calls to other bpf functions are allowed for", + .result_unpriv = REJECT, + .result = ACCEPT, + .retval = 2, +}, |