{ "leak pointer into ctx 1", .insns = { BPF_MOV64_IMM(BPF_REG_0, 0), BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, offsetof(struct __sk_buff, cb[0])), BPF_LD_MAP_FD(BPF_REG_2, 0), BPF_STX_XADD(BPF_DW, BPF_REG_1, BPF_REG_2, offsetof(struct __sk_buff, cb[0])), BPF_EXIT_INSN(), }, .fixup_map_hash_8b = { 2 }, .errstr_unpriv = "R2 leaks addr into mem", .result_unpriv = REJECT, .result = REJECT, .errstr = "BPF_XADD stores into R1 ctx is not allowed", }, { "leak pointer into ctx 2", .insns = { BPF_MOV64_IMM(BPF_REG_0, 0), BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, offsetof(struct __sk_buff, cb[0])), BPF_STX_XADD(BPF_DW, BPF_REG_1, BPF_REG_10, offsetof(struct __sk_buff, cb[0])), BPF_EXIT_INSN(), }, .errstr_unpriv = "R10 leaks addr into mem", .result_unpriv = REJECT, .result = REJECT, .errstr = "BPF_XADD stores into R1 ctx is not allowed", }, { "leak pointer into ctx 3", .insns = { BPF_MOV64_IMM(BPF_REG_0, 0), BPF_LD_MAP_FD(BPF_REG_2, 0), BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_2, offsetof(struct __sk_buff, cb[0])), BPF_EXIT_INSN(), }, .fixup_map_hash_8b = { 1 }, .errstr_unpriv = "R2 leaks addr into ctx", .result_unpriv = REJECT, .result = ACCEPT, }, { "leak pointer into map val", .insns = { BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), BPF_LD_MAP_FD(BPF_REG_1, 0), BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), BPF_MOV64_IMM(BPF_REG_3, 0), BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), BPF_STX_XADD(BPF_DW, BPF_REG_0, BPF_REG_6, 0), BPF_MOV64_IMM(BPF_REG_0, 0), BPF_EXIT_INSN(), }, .fixup_map_hash_8b = { 4 }, .errstr_unpriv = "R6 leaks addr into mem", .result_unpriv = REJECT, .result = ACCEPT, },