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

direct_stack_access_wraparound.c (1156B)

      1{
      2	"direct stack access with 32-bit wraparound. test1",
      3	.insns = {
      4	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
      5	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x7fffffff),
      6	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x7fffffff),
      7	BPF_MOV32_IMM(BPF_REG_0, 0),
      8	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
      9	BPF_EXIT_INSN(),
     10	},
     11	.errstr = "fp pointer and 2147483647",
     12	.result = REJECT
     13},
     14{
     15	"direct stack access with 32-bit wraparound. test2",
     16	.insns = {
     17	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
     18	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x3fffffff),
     19	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x3fffffff),
     20	BPF_MOV32_IMM(BPF_REG_0, 0),
     21	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
     22	BPF_EXIT_INSN(),
     23	},
     24	.errstr = "fp pointer and 1073741823",
     25	.result = REJECT
     26},
     27{
     28	"direct stack access with 32-bit wraparound. test3",
     29	.insns = {
     30	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
     31	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x1fffffff),
     32	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x1fffffff),
     33	BPF_MOV32_IMM(BPF_REG_0, 0),
     34	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
     35	BPF_EXIT_INSN(),
     36	},
     37	.errstr = "fp pointer offset 1073741822",
     38	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
     39	.result = REJECT
     40},