diff options
Diffstat (limited to 'lib/test_bpf.c')
| -rw-r--r-- | lib/test_bpf.c | 595 |
1 files changed, 402 insertions, 193 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c index 8e157806df7a6..60aedc8793610 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -356,29 +356,22 @@ static int bpf_fill_maxinsns11(struct bpf_test *self) return __bpf_fill_ja(self, BPF_MAXINSNS, 68); } -static int bpf_fill_ja(struct bpf_test *self) -{ - /* Hits exactly 11 passes on x86_64 JIT. */ - return __bpf_fill_ja(self, 12, 9); -} - -static int bpf_fill_ld_abs_get_processor_id(struct bpf_test *self) +static int bpf_fill_maxinsns12(struct bpf_test *self) { unsigned int len = BPF_MAXINSNS; struct sock_filter *insn; - int i; + int i = 0; insn = kmalloc_array(len, sizeof(*insn), GFP_KERNEL); if (!insn) return -ENOMEM; - for (i = 0; i < len - 1; i += 2) { - insn[i] = __BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 0); - insn[i + 1] = __BPF_STMT(BPF_LD | BPF_W | BPF_ABS, - SKF_AD_OFF + SKF_AD_CPU); - } + insn[0] = __BPF_JUMP(BPF_JMP | BPF_JA, len - 2, 0, 0); - insn[len - 1] = __BPF_STMT(BPF_RET | BPF_K, 0xbee); + for (i = 1; i < len - 1; i++) + insn[i] = __BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0); + + insn[len - 1] = __BPF_STMT(BPF_RET | BPF_K, 0xabababab); self->u.ptr.insns = insn; self->u.ptr.len = len; @@ -386,50 +379,22 @@ static int bpf_fill_ld_abs_get_processor_id(struct bpf_test *self) return 0; } -#define PUSH_CNT 68 -/* test: {skb->data[0], vlan_push} x 68 + {skb->data[0], vlan_pop} x 68 */ -static int bpf_fill_ld_abs_vlan_push_pop(struct bpf_test *self) +static int bpf_fill_maxinsns13(struct bpf_test *self) { unsigned int len = BPF_MAXINSNS; - struct bpf_insn *insn; - int i = 0, j, k = 0; + struct sock_filter *insn; + int i = 0; insn = kmalloc_array(len, sizeof(*insn), GFP_KERNEL); if (!insn) return -ENOMEM; - insn[i++] = BPF_MOV64_REG(R6, R1); -loop: - for (j = 0; j < PUSH_CNT; j++) { - insn[i++] = BPF_LD_ABS(BPF_B, 0); - insn[i] = BPF_JMP_IMM(BPF_JNE, R0, 0x34, len - i - 2); - i++; - insn[i++] = BPF_MOV64_REG(R1, R6); - insn[i++] = BPF_MOV64_IMM(R2, 1); - insn[i++] = BPF_MOV64_IMM(R3, 2); - insn[i++] = BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, - bpf_skb_vlan_push_proto.func - __bpf_call_base); - insn[i] = BPF_JMP_IMM(BPF_JNE, R0, 0, len - i - 2); - i++; - } - - for (j = 0; j < PUSH_CNT; j++) { - insn[i++] = BPF_LD_ABS(BPF_B, 0); - insn[i] = BPF_JMP_IMM(BPF_JNE, R0, 0x34, len - i - 2); - i++; - insn[i++] = BPF_MOV64_REG(R1, R6); - insn[i++] = BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, - bpf_skb_vlan_pop_proto.func - __bpf_call_base); - insn[i] = BPF_JMP_IMM(BPF_JNE, R0, 0, len - i - 2); - i++; - } - if (++k < 5) - goto loop; + for (i = 0; i < len - 3; i++) + insn[i] = __BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0); - for (; i < len - 1; i++) - insn[i] = BPF_ALU32_IMM(BPF_MOV, R0, 0xbef); - - insn[len - 1] = BPF_EXIT_INSN(); + insn[len - 3] = __BPF_STMT(BPF_LD | BPF_IMM, 0xabababab); + insn[len - 2] = __BPF_STMT(BPF_ALU | BPF_XOR | BPF_X, 0); + insn[len - 1] = __BPF_STMT(BPF_RET | BPF_A, 0); self->u.ptr.insns = insn; self->u.ptr.len = len; @@ -437,58 +402,29 @@ loop: return 0; } -static int bpf_fill_ld_abs_vlan_push_pop2(struct bpf_test *self) +static int bpf_fill_ja(struct bpf_test *self) { - struct bpf_insn *insn; - - insn = kmalloc_array(16, sizeof(*insn), GFP_KERNEL); - if (!insn) - return -ENOMEM; - - /* Due to func address being non-const, we need to - * assemble this here. - */ - insn[0] = BPF_MOV64_REG(R6, R1); - insn[1] = BPF_LD_ABS(BPF_B, 0); - insn[2] = BPF_LD_ABS(BPF_H, 0); - insn[3] = BPF_LD_ABS(BPF_W, 0); - insn[4] = BPF_MOV64_REG(R7, R6); - insn[5] = BPF_MOV64_IMM(R6, 0); - insn[6] = BPF_MOV64_REG(R1, R7); - insn[7] = BPF_MOV64_IMM(R2, 1); - insn[8] = BPF_MOV64_IMM(R3, 2); - insn[9] = BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, - bpf_skb_vlan_push_proto.func - __bpf_call_base); - insn[10] = BPF_MOV64_REG(R6, R7); - insn[11] = BPF_LD_ABS(BPF_B, 0); - insn[12] = BPF_LD_ABS(BPF_H, 0); - insn[13] = BPF_LD_ABS(BPF_W, 0); - insn[14] = BPF_MOV64_IMM(R0, 42); - insn[15] = BPF_EXIT_INSN(); - - self->u.ptr.insns = insn; - self->u.ptr.len = 16; - - return 0; + /* Hits exactly 11 passes on x86_64 JIT. */ + return __bpf_fill_ja(self, 12, 9); } -static int bpf_fill_jump_around_ld_abs(struct bpf_test *self) +static int bpf_fill_ld_abs_get_processor_id(struct bpf_test *self) { unsigned int len = BPF_MAXINSNS; - struct bpf_insn *insn; - int i = 0; + struct sock_filter *insn; + int i; insn = kmalloc_array(len, sizeof(*insn), GFP_KERNEL); if (!insn) return -ENOMEM; - insn[i++] = BPF_MOV64_REG(R6, R1); - insn[i++] = BPF_LD_ABS(BPF_B, 0); - insn[i] = BPF_JMP_IMM(BPF_JEQ, R0, 10, len - i - 2); - i++; - while (i < len - 1) - insn[i++] = BPF_LD_ABS(BPF_B, 1); - insn[i] = BPF_EXIT_INSN(); + for (i = 0; i < len - 1; i += 2) { + insn[i] = __BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 0); + insn[i + 1] = __BPF_STMT(BPF_LD | BPF_W | BPF_ABS, + SKF_AD_OFF + SKF_AD_CPU); + } + + insn[len - 1] = __BPF_STMT(BPF_RET | BPF_K, 0xbee); self->u.ptr.insns = insn; self->u.ptr.len = len; @@ -1988,40 +1924,6 @@ static struct bpf_test tests[] = { { { 0, -1 } } }, { - "INT: DIV + ABS", - .u.insns_int = { - BPF_ALU64_REG(BPF_MOV, R6, R1), - BPF_LD_ABS(BPF_B, 3), - BPF_ALU64_IMM(BPF_MOV, R2, 2), - BPF_ALU32_REG(BPF_DIV, R0, R2), - BPF_ALU64_REG(BPF_MOV, R8, R0), - BPF_LD_ABS(BPF_B, 4), - BPF_ALU64_REG(BPF_ADD, R8, R0), - BPF_LD_IND(BPF_B, R8, -70), - BPF_EXIT_INSN(), - }, - INTERNAL, - { 10, 20, 30, 40, 50 }, - { { 4, 0 }, { 5, 10 } } - }, - { - /* This one doesn't go through verifier, but is just raw insn - * as opposed to cBPF tests from here. Thus div by 0 tests are - * done in test_verifier in BPF kselftests. - */ - "INT: DIV by -1", - .u.insns_int = { - BPF_ALU64_REG(BPF_MOV, R6, R1), - BPF_ALU64_IMM(BPF_MOV, R7, -1), - BPF_LD_ABS(BPF_B, 3), - BPF_ALU32_REG(BPF_DIV, R0, R7), - BPF_EXIT_INSN(), - }, - INTERNAL, - { 10, 20, 30, 40, 50 }, - { { 3, 0 }, { 4, 0 } } - }, - { "check: missing ret", .u.insns = { BPF_STMT(BPF_LD | BPF_IMM, 1), @@ -2383,50 +2285,6 @@ static struct bpf_test tests[] = { { }, { { 0, 1 } } }, - { - "nmap reduced", - .u.insns_int = { - BPF_MOV64_REG(R6, R1), - BPF_LD_ABS(BPF_H, 12), - BPF_JMP_IMM(BPF_JNE, R0, 0x806, 28), - BPF_LD_ABS(BPF_H, 12), - BPF_JMP_IMM(BPF_JNE, R0, 0x806, 26), - BPF_MOV32_IMM(R0, 18), - BPF_STX_MEM(BPF_W, R10, R0, -64), - BPF_LDX_MEM(BPF_W, R7, R10, -64), - BPF_LD_IND(BPF_W, R7, 14), - BPF_STX_MEM(BPF_W, R10, R0, -60), - BPF_MOV32_IMM(R0, 280971478), - BPF_STX_MEM(BPF_W, R10, R0, -56), - BPF_LDX_MEM(BPF_W, R7, R10, -56), - BPF_LDX_MEM(BPF_W, R0, R10, -60), - BPF_ALU32_REG(BPF_SUB, R0, R7), - BPF_JMP_IMM(BPF_JNE, R0, 0, 15), - BPF_LD_ABS(BPF_H, 12), - BPF_JMP_IMM(BPF_JNE, R0, 0x806, 13), - BPF_MOV32_IMM(R0, 22), - BPF_STX_MEM(BPF_W, R10, R0, -56), - BPF_LDX_MEM(BPF_W, R7, R10, -56), - BPF_LD_IND(BPF_H, R7, 14), - BPF_STX_MEM(BPF_W, R10, R0, -52), - BPF_MOV32_IMM(R0, 17366), - BPF_STX_MEM(BPF_W, R10, R0, -48), - BPF_LDX_MEM(BPF_W, R7, R10, -48), - BPF_LDX_MEM(BPF_W, R0, R10, -52), - BPF_ALU32_REG(BPF_SUB, R0, R7), - BPF_JMP_IMM(BPF_JNE, R0, 0, 2), - BPF_MOV32_IMM(R0, 256), - BPF_EXIT_INSN(), - BPF_MOV32_IMM(R0, 0), - BPF_EXIT_INSN(), - }, - INTERNAL, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x08, 0x06, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0x10, 0xbf, 0x48, 0xd6, 0x43, 0xd6}, - { { 38, 256 } }, - .stack_depth = 64, - }, /* BPF_ALU | BPF_MOV | BPF_X */ { "ALU_MOV_X: dst = 2", @@ -5478,28 +5336,29 @@ static struct bpf_test tests[] = { .expected_errcode = -ENOTSUPP, }, { - "BPF_MAXINSNS: ld_abs+get_processor_id", - { }, - CLASSIC, + "BPF_MAXINSNS: jump over MSH", { }, - { { 1, 0xbee } }, - .fill_helper = bpf_fill_ld_abs_get_processor_id, + CLASSIC | FLAG_EXPECTED_FAIL, + { 0xfa, 0xfb, 0xfc, 0xfd, }, + { { 4, 0xabababab } }, + .fill_helper = bpf_fill_maxinsns12, + .expected_errcode = -EINVAL, }, { - "BPF_MAXINSNS: ld_abs+vlan_push/pop", + "BPF_MAXINSNS: exec all MSH", { }, - INTERNAL, - { 0x34 }, - { { ETH_HLEN, 0xbef } }, - .fill_helper = bpf_fill_ld_abs_vlan_push_pop, + CLASSIC, + { 0xfa, 0xfb, 0xfc, 0xfd, }, + { { 4, 0xababab83 } }, + .fill_helper = bpf_fill_maxinsns13, }, { - "BPF_MAXINSNS: jump around ld_abs", + "BPF_MAXINSNS: ld_abs+get_processor_id", { }, - INTERNAL, - { 10, 11 }, - { { 2, 10 } }, - .fill_helper = bpf_fill_jump_around_ld_abs, + CLASSIC, + { }, + { { 1, 0xbee } }, + .fill_helper = bpf_fill_ld_abs_get_processor_id, }, /* * LD_IND / LD_ABS on fragmented SKBs @@ -5683,6 +5542,53 @@ static struct bpf_test tests[] = { { {0x40, 0x05 } }, }, { + "LD_IND byte positive offset, all ff", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3e), + BPF_STMT(BPF_LD | BPF_IND | BPF_B, 0x1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0xff, [0x3d] = 0xff, [0x3e] = 0xff, [0x3f] = 0xff }, + { {0x40, 0xff } }, + }, + { + "LD_IND byte positive offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3e), + BPF_STMT(BPF_LD | BPF_IND | BPF_B, 0x1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LD_IND byte negative offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3e), + BPF_STMT(BPF_LD | BPF_IND | BPF_B, -0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 } }, + }, + { + "LD_IND byte negative offset, multiple calls", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3b), + BPF_STMT(BPF_LD | BPF_IND | BPF_B, SKF_LL_OFF + 1), + BPF_STMT(BPF_LD | BPF_IND | BPF_B, SKF_LL_OFF + 2), + BPF_STMT(BPF_LD | BPF_IND | BPF_B, SKF_LL_OFF + 3), + BPF_STMT(BPF_LD | BPF_IND | BPF_B, SKF_LL_OFF + 4), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x82 }, }, + }, + { "LD_IND halfword positive offset", .u.insns = { BPF_STMT(BPF_LDX | BPF_IMM, 0x20), @@ -5731,6 +5637,39 @@ static struct bpf_test tests[] = { { {0x40, 0x66cc } }, }, { + "LD_IND halfword positive offset, all ff", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3d), + BPF_STMT(BPF_LD | BPF_IND | BPF_H, 0x1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0xff, [0x3d] = 0xff, [0x3e] = 0xff, [0x3f] = 0xff }, + { {0x40, 0xffff } }, + }, + { + "LD_IND halfword positive offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3e), + BPF_STMT(BPF_LD | BPF_IND | BPF_H, 0x1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LD_IND halfword negative offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3e), + BPF_STMT(BPF_LD | BPF_IND | BPF_H, -0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 } }, + }, + { "LD_IND word positive offset", .u.insns = { BPF_STMT(BPF_LDX | BPF_IMM, 0x20), @@ -5821,6 +5760,39 @@ static struct bpf_test tests[] = { { {0x40, 0x66cc77dd } }, }, { + "LD_IND word positive offset, all ff", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3b), + BPF_STMT(BPF_LD | BPF_IND | BPF_W, 0x1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0xff, [0x3d] = 0xff, [0x3e] = 0xff, [0x3f] = 0xff }, + { {0x40, 0xffffffff } }, + }, + { + "LD_IND word positive offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3e), + BPF_STMT(BPF_LD | BPF_IND | BPF_W, 0x1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LD_IND word negative offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LDX | BPF_IMM, 0x3e), + BPF_STMT(BPF_LD | BPF_IND | BPF_W, -0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 } }, + }, + { "LD_ABS byte", .u.insns = { BPF_STMT(BPF_LD | BPF_ABS | BPF_B, 0x20), @@ -5838,6 +5810,68 @@ static struct bpf_test tests[] = { { {0x40, 0xcc } }, }, { + "LD_ABS byte positive offset, all ff", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0xff, [0x3d] = 0xff, [0x3e] = 0xff, [0x3f] = 0xff }, + { {0x40, 0xff } }, + }, + { + "LD_ABS byte positive offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LD_ABS byte negative offset, out of bounds load", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, -1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC | FLAG_EXPECTED_FAIL, + .expected_errcode = -EINVAL, + }, + { + "LD_ABS byte negative offset, in bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, SKF_LL_OFF + 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x82 }, }, + }, + { + "LD_ABS byte negative offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, SKF_LL_OFF + 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LD_ABS byte negative offset, multiple calls", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, SKF_LL_OFF + 0x3c), + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, SKF_LL_OFF + 0x3d), + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, SKF_LL_OFF + 0x3e), + BPF_STMT(BPF_LD | BPF_ABS | BPF_B, SKF_LL_OFF + 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x82 }, }, + }, + { "LD_ABS halfword", .u.insns = { BPF_STMT(BPF_LD | BPF_ABS | BPF_H, 0x22), @@ -5872,6 +5906,55 @@ static struct bpf_test tests[] = { { {0x40, 0x99ff } }, }, { + "LD_ABS halfword positive offset, all ff", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_H, 0x3e), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0xff, [0x3d] = 0xff, [0x3e] = 0xff, [0x3f] = 0xff }, + { {0x40, 0xffff } }, + }, + { + "LD_ABS halfword positive offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_H, 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LD_ABS halfword negative offset, out of bounds load", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_H, -1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC | FLAG_EXPECTED_FAIL, + .expected_errcode = -EINVAL, + }, + { + "LD_ABS halfword negative offset, in bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_H, SKF_LL_OFF + 0x3e), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x1982 }, }, + }, + { + "LD_ABS halfword negative offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_H, SKF_LL_OFF + 0x3e), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { "LD_ABS word", .u.insns = { BPF_STMT(BPF_LD | BPF_ABS | BPF_W, 0x1c), @@ -5939,6 +6022,140 @@ static struct bpf_test tests[] = { }, { {0x40, 0x88ee99ff } }, }, + { + "LD_ABS word positive offset, all ff", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_W, 0x3c), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0xff, [0x3d] = 0xff, [0x3e] = 0xff, [0x3f] = 0xff }, + { {0x40, 0xffffffff } }, + }, + { + "LD_ABS word positive offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_W, 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LD_ABS word negative offset, out of bounds load", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_W, -1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC | FLAG_EXPECTED_FAIL, + .expected_errcode = -EINVAL, + }, + { + "LD_ABS word negative offset, in bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_W, SKF_LL_OFF + 0x3c), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x25051982 }, }, + }, + { + "LD_ABS word negative offset, out of bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_ABS | BPF_W, SKF_LL_OFF + 0x3c), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x3f, 0 }, }, + }, + { + "LDX_MSH standalone, preserved A", + .u.insns = { + BPF_STMT(BPF_LD | BPF_IMM, 0xffeebbaa), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x3c), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0xffeebbaa }, }, + }, + { + "LDX_MSH standalone, preserved A 2", + .u.insns = { + BPF_STMT(BPF_LD | BPF_IMM, 0x175e9d63), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x3c), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x3d), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x3e), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x3f), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x175e9d63 }, }, + }, + { + "LDX_MSH standalone, test result 1", + .u.insns = { + BPF_STMT(BPF_LD | BPF_IMM, 0xffeebbaa), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x3c), + BPF_STMT(BPF_MISC | BPF_TXA, 0), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x14 }, }, + }, + { + "LDX_MSH standalone, test result 2", + .u.insns = { + BPF_STMT(BPF_LD | BPF_IMM, 0xffeebbaa), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x3e), + BPF_STMT(BPF_MISC | BPF_TXA, 0), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x24 }, }, + }, + { + "LDX_MSH standalone, negative offset", + .u.insns = { + BPF_STMT(BPF_LD | BPF_IMM, 0xffeebbaa), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, -1), + BPF_STMT(BPF_MISC | BPF_TXA, 0), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0 }, }, + }, + { + "LDX_MSH standalone, negative offset 2", + .u.insns = { + BPF_STMT(BPF_LD | BPF_IMM, 0xffeebbaa), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, SKF_LL_OFF + 0x3e), + BPF_STMT(BPF_MISC | BPF_TXA, 0), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0x24 }, }, + }, + { + "LDX_MSH standalone, out of bounds", + .u.insns = { + BPF_STMT(BPF_LD | BPF_IMM, 0xffeebbaa), + BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 0x40), + BPF_STMT(BPF_MISC | BPF_TXA, 0), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC, + { [0x3c] = 0x25, [0x3d] = 0x05, [0x3e] = 0x19, [0x3f] = 0x82 }, + { {0x40, 0 }, }, + }, /* * verify that the interpreter or JIT correctly sets A and X * to 0. @@ -6127,14 +6344,6 @@ static struct bpf_test tests[] = { {}, { {0x1, 0x42 } }, }, - { - "LD_ABS with helper changing skb data", - { }, - INTERNAL, - { 0x34 }, - { { ETH_HLEN, 42 } }, - .fill_helper = bpf_fill_ld_abs_vlan_push_pop2, - }, /* Checking interpreter vs JIT wrt signed extended imms. */ { "JNE signed compare, test 1", |