cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

and.c (2307B)

      1{
      2	"invalid and of negative number",
      3	.insns = {
      4	BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
      5	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
      6	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
      7	BPF_LD_MAP_FD(BPF_REG_1, 0),
      8	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
      9	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
     10	BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
     11	BPF_ALU64_IMM(BPF_AND, BPF_REG_1, -4),
     12	BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
     13	BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
     14	BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
     15	BPF_EXIT_INSN(),
     16	},
     17	.fixup_map_hash_48b = { 3 },
     18	.errstr = "R0 max value is outside of the allowed memory range",
     19	.result = REJECT,
     20	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
     21},
     22{
     23	"invalid range check",
     24	.insns = {
     25	BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
     26	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
     27	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
     28	BPF_LD_MAP_FD(BPF_REG_1, 0),
     29	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
     30	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 12),
     31	BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
     32	BPF_MOV64_IMM(BPF_REG_9, 1),
     33	BPF_ALU32_IMM(BPF_MOD, BPF_REG_1, 2),
     34	BPF_ALU32_IMM(BPF_ADD, BPF_REG_1, 1),
     35	BPF_ALU32_REG(BPF_AND, BPF_REG_9, BPF_REG_1),
     36	BPF_ALU32_IMM(BPF_ADD, BPF_REG_9, 1),
     37	BPF_ALU32_IMM(BPF_RSH, BPF_REG_9, 1),
     38	BPF_MOV32_IMM(BPF_REG_3, 1),
     39	BPF_ALU32_REG(BPF_SUB, BPF_REG_3, BPF_REG_9),
     40	BPF_ALU32_IMM(BPF_MUL, BPF_REG_3, 0x10000000),
     41	BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3),
     42	BPF_STX_MEM(BPF_W, BPF_REG_0, BPF_REG_3, 0),
     43	BPF_MOV64_REG(BPF_REG_0, 0),
     44	BPF_EXIT_INSN(),
     45	},
     46	.fixup_map_hash_48b = { 3 },
     47	.errstr = "R0 max value is outside of the allowed memory range",
     48	.result = REJECT,
     49	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
     50},
     51{
     52	"check known subreg with unknown reg",
     53	.insns = {
     54	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
     55	BPF_ALU64_IMM(BPF_LSH, BPF_REG_0, 32),
     56	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
     57	BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 0xFFFF1234),
     58	/* Upper bits are unknown but AND above masks out 1 zero'ing lower bits */
     59	BPF_JMP32_IMM(BPF_JLT, BPF_REG_0, 1, 1),
     60	BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, 512),
     61	BPF_MOV64_IMM(BPF_REG_0, 0),
     62	BPF_EXIT_INSN(),
     63	},
     64	.errstr_unpriv = "R1 !read_ok",
     65	.result_unpriv = REJECT,
     66	.result = ACCEPT,
     67	.retval = 0
     68},