a680cb3d8e
The verifier errors around stack accesses have changed slightly in the previous commit (generally for the better). Signed-off-by: Andrei Matei <andreimatei1@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210207011027.676572-3-andreimatei1@gmail.com
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
{
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"constant register |= constant should keep constant type",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -48),
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BPF_MOV64_IMM(BPF_REG_2, 34),
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BPF_ALU64_IMM(BPF_OR, BPF_REG_2, 13),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_TRACEPOINT,
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},
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{
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"constant register |= constant should not bypass stack boundary checks",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -48),
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BPF_MOV64_IMM(BPF_REG_2, 34),
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BPF_ALU64_IMM(BPF_OR, BPF_REG_2, 24),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid indirect access to stack R1 off=-48 size=58",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_TRACEPOINT,
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},
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{
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"constant register |= constant register should keep constant type",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -48),
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BPF_MOV64_IMM(BPF_REG_2, 34),
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BPF_MOV64_IMM(BPF_REG_4, 13),
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BPF_ALU64_REG(BPF_OR, BPF_REG_2, BPF_REG_4),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_TRACEPOINT,
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},
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{
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"constant register |= constant register should not bypass stack boundary checks",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -48),
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BPF_MOV64_IMM(BPF_REG_2, 34),
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BPF_MOV64_IMM(BPF_REG_4, 24),
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BPF_ALU64_REG(BPF_OR, BPF_REG_2, BPF_REG_4),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid indirect access to stack R1 off=-48 size=58",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_TRACEPOINT,
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},
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