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

value.c (3401B)

      1{
      2	"map element value store of cleared call register",
      3	.insns = {
      4	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
      5	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
      6	BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0),
      7	BPF_LD_MAP_FD(BPF_REG_1, 0),
      8	BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
      9	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
     10	BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 0),
     11	BPF_EXIT_INSN(),
     12	},
     13	.fixup_map_hash_48b = { 3 },
     14	.errstr_unpriv = "R1 !read_ok",
     15	.errstr = "R1 !read_ok",
     16	.result = REJECT,
     17	.result_unpriv = REJECT,
     18},
     19{
     20	"map element value with unaligned store",
     21	.insns = {
     22	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
     23	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
     24	BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0),
     25	BPF_LD_MAP_FD(BPF_REG_1, 0),
     26	BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
     27	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 17),
     28	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 3),
     29	BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42),
     30	BPF_ST_MEM(BPF_DW, BPF_REG_0, 2, 43),
     31	BPF_ST_MEM(BPF_DW, BPF_REG_0, -2, 44),
     32	BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
     33	BPF_ST_MEM(BPF_DW, BPF_REG_8, 0, 32),
     34	BPF_ST_MEM(BPF_DW, BPF_REG_8, 2, 33),
     35	BPF_ST_MEM(BPF_DW, BPF_REG_8, -2, 34),
     36	BPF_ALU64_IMM(BPF_ADD, BPF_REG_8, 5),
     37	BPF_ST_MEM(BPF_DW, BPF_REG_8, 0, 22),
     38	BPF_ST_MEM(BPF_DW, BPF_REG_8, 4, 23),
     39	BPF_ST_MEM(BPF_DW, BPF_REG_8, -7, 24),
     40	BPF_MOV64_REG(BPF_REG_7, BPF_REG_8),
     41	BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, 3),
     42	BPF_ST_MEM(BPF_DW, BPF_REG_7, 0, 22),
     43	BPF_ST_MEM(BPF_DW, BPF_REG_7, 4, 23),
     44	BPF_ST_MEM(BPF_DW, BPF_REG_7, -4, 24),
     45	BPF_EXIT_INSN(),
     46	},
     47	.fixup_map_hash_48b = { 3 },
     48	.errstr_unpriv = "R0 leaks addr",
     49	.result = ACCEPT,
     50	.result_unpriv = REJECT,
     51	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
     52},
     53{
     54	"map element value with unaligned load",
     55	.insns = {
     56	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
     57	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
     58	BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0),
     59	BPF_LD_MAP_FD(BPF_REG_1, 0),
     60	BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
     61	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 11),
     62	BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
     63	BPF_JMP_IMM(BPF_JGE, BPF_REG_1, MAX_ENTRIES, 9),
     64	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 3),
     65	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0),
     66	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 2),
     67	BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
     68	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_8, 0),
     69	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_8, 2),
     70	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 5),
     71	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 0),
     72	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_0, 4),
     73	BPF_EXIT_INSN(),
     74	},
     75	.fixup_map_hash_48b = { 3 },
     76	.errstr_unpriv = "R0 leaks addr",
     77	.result = ACCEPT,
     78	.result_unpriv = REJECT,
     79	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
     80},
     81{
     82	"map element value is preserved across register spilling",
     83	.insns = {
     84	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
     85	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
     86	BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0),
     87	BPF_LD_MAP_FD(BPF_REG_1, 0),
     88	BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
     89	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
     90	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, offsetof(struct test_val, foo)),
     91	BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42),
     92	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
     93	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -184),
     94	BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0),
     95	BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1, 0),
     96	BPF_ST_MEM(BPF_DW, BPF_REG_3, 0, 42),
     97	BPF_EXIT_INSN(),
     98	},
     99	.fixup_map_hash_48b = { 3 },
    100	.errstr_unpriv = "R0 leaks addr",
    101	.result = ACCEPT,
    102	.result_unpriv = REJECT,
    103	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
    104},