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Diffstat (limited to 'tools/testing/selftests/bpf/verifier/spill_fill.c')
-rw-r--r--tools/testing/selftests/bpf/verifier/spill_fill.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/tools/testing/selftests/bpf/verifier/spill_fill.c b/tools/testing/selftests/bpf/verifier/spill_fill.c
deleted file mode 100644
index d1463bf4949a..000000000000
--- a/tools/testing/selftests/bpf/verifier/spill_fill.c
+++ /dev/null
@@ -1,345 +0,0 @@
-{
- "check valid spill/fill",
- .insns = {
- /* spill R1(ctx) into stack */
- BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),
- /* fill it back into R2 */
- BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_10, -8),
- /* should be able to access R0 = *(R2 + 8) */
- /* BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_2, 8), */
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- BPF_EXIT_INSN(),
- },
- .errstr_unpriv = "R0 leaks addr",
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .retval = POINTER_VALUE,
-},
-{
- "check valid spill/fill, skb mark",
- .insns = {
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_1),
- BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
- offsetof(struct __sk_buff, mark)),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .result_unpriv = ACCEPT,
-},
-{
- "check valid spill/fill, ptr to mem",
- .insns = {
- /* reserve 8 byte ringbuf memory */
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_2, 8),
- BPF_MOV64_IMM(BPF_REG_3, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_reserve),
- /* store a pointer to the reserved memory in R6 */
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
- /* check whether the reservation was successful */
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6),
- /* spill R6(mem) into the stack */
- BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
- /* fill it back in R7 */
- BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_10, -8),
- /* should be able to access *(R7) = 0 */
- BPF_ST_MEM(BPF_DW, BPF_REG_7, 0, 0),
- /* submit the reserved ringbuf memory */
- BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
- BPF_MOV64_IMM(BPF_REG_2, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_submit),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_ringbuf = { 1 },
- .result = ACCEPT,
- .result_unpriv = ACCEPT,
-},
-{
- "check with invalid reg offset 0",
- .insns = {
- /* reserve 8 byte ringbuf memory */
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_2, 8),
- BPF_MOV64_IMM(BPF_REG_3, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_reserve),
- /* store a pointer to the reserved memory in R6 */
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
- /* add invalid offset to memory or NULL */
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
- /* check whether the reservation was successful */
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- /* should not be able to access *(R7) = 0 */
- BPF_ST_MEM(BPF_W, BPF_REG_6, 0, 0),
- /* submit the reserved ringbuf memory */
- BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_2, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_submit),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_ringbuf = { 1 },
- .result = REJECT,
- .errstr = "R0 pointer arithmetic on ringbuf_mem_or_null prohibited",
-},
-{
- "check corrupted spill/fill",
- .insns = {
- /* spill R1(ctx) into stack */
- BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),
- /* mess up with R1 pointer on stack */
- BPF_ST_MEM(BPF_B, BPF_REG_10, -7, 0x23),
- /* fill back into R0 is fine for priv.
- * R0 now becomes SCALAR_VALUE.
- */
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
- /* Load from R0 should fail. */
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8),
- BPF_EXIT_INSN(),
- },
- .errstr_unpriv = "attempt to corrupt spilled",
- .errstr = "R0 invalid mem access 'scalar'",
- .result = REJECT,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "check corrupted spill/fill, LSB",
- .insns = {
- BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),
- BPF_ST_MEM(BPF_H, BPF_REG_10, -8, 0xcafe),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
- BPF_EXIT_INSN(),
- },
- .errstr_unpriv = "attempt to corrupt spilled",
- .result_unpriv = REJECT,
- .result = ACCEPT,
- .retval = POINTER_VALUE,
-},
-{
- "check corrupted spill/fill, MSB",
- .insns = {
- BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),
- BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0x12345678),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
- BPF_EXIT_INSN(),
- },
- .errstr_unpriv = "attempt to corrupt spilled",
- .result_unpriv = REJECT,
- .result = ACCEPT,
- .retval = POINTER_VALUE,
-},
-{
- "Spill and refill a u32 const scalar. Offset to skb->data",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- /* r4 = 20 */
- BPF_MOV32_IMM(BPF_REG_4, 20),
- /* *(u32 *)(r10 -8) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
- /* r4 = *(u32 *)(r10 -8) */
- BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -8),
- /* r0 = r2 */
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- /* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=20 */
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
- /* if (r0 > r3) R0=pkt,off=20 R2=pkt R3=pkt_end R4=20 */
- BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
- /* r0 = *(u32 *)r2 R0=pkt,off=20,r=20 R2=pkt,r=20 R3=pkt_end R4=20 */
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "Spill a u32 const, refill from another half of the uninit u32 from the stack",
- .insns = {
- /* r4 = 20 */
- BPF_MOV32_IMM(BPF_REG_4, 20),
- /* *(u32 *)(r10 -8) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
- /* r4 = *(u32 *)(r10 -4) fp-8=????rrrr*/
- BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -4),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result_unpriv = REJECT,
- .errstr_unpriv = "invalid read from stack off -4+0 size 4",
- /* in privileged mode reads from uninitialized stack locations are permitted */
- .result = ACCEPT,
-},
-{
- "Spill a u32 const scalar. Refill as u16. Offset to skb->data",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- /* r4 = 20 */
- BPF_MOV32_IMM(BPF_REG_4, 20),
- /* *(u32 *)(r10 -8) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
- /* r4 = *(u16 *)(r10 -8) */
- BPF_LDX_MEM(BPF_H, BPF_REG_4, BPF_REG_10, -8),
- /* r0 = r2 */
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- /* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=umax=65535 */
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
- /* if (r0 > r3) R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=umax=65535 */
- BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
- /* r0 = *(u32 *)r2 R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=20 */
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid access to packet",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "Spill u32 const scalars. Refill as u64. Offset to skb->data",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- /* r6 = 0 */
- BPF_MOV32_IMM(BPF_REG_6, 0),
- /* r7 = 20 */
- BPF_MOV32_IMM(BPF_REG_7, 20),
- /* *(u32 *)(r10 -4) = r6 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_6, -4),
- /* *(u32 *)(r10 -8) = r7 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_7, -8),
- /* r4 = *(u64 *)(r10 -8) */
- BPF_LDX_MEM(BPF_H, BPF_REG_4, BPF_REG_10, -8),
- /* r0 = r2 */
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- /* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=umax=65535 */
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
- /* if (r0 > r3) R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=umax=65535 */
- BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
- /* r0 = *(u32 *)r2 R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=20 */
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid access to packet",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "Spill a u32 const scalar. Refill as u16 from fp-6. Offset to skb->data",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- /* r4 = 20 */
- BPF_MOV32_IMM(BPF_REG_4, 20),
- /* *(u32 *)(r10 -8) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
- /* r4 = *(u16 *)(r10 -6) */
- BPF_LDX_MEM(BPF_H, BPF_REG_4, BPF_REG_10, -6),
- /* r0 = r2 */
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- /* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=umax=65535 */
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
- /* if (r0 > r3) R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=umax=65535 */
- BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
- /* r0 = *(u32 *)r2 R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=20 */
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid access to packet",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "Spill and refill a u32 const scalar at non 8byte aligned stack addr. Offset to skb->data",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- /* r4 = 20 */
- BPF_MOV32_IMM(BPF_REG_4, 20),
- /* *(u32 *)(r10 -8) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
- /* *(u32 *)(r10 -4) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -4),
- /* r4 = *(u32 *)(r10 -4), */
- BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -4),
- /* r0 = r2 */
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- /* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=umax=U32_MAX */
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
- /* if (r0 > r3) R0=pkt,umax=U32_MAX R2=pkt R3=pkt_end R4= */
- BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
- /* r0 = *(u32 *)r2 R0=pkt,umax=U32_MAX R2=pkt R3=pkt_end R4= */
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid access to packet",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "Spill and refill a umax=40 bounded scalar. Offset to skb->data",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_1,
- offsetof(struct __sk_buff, tstamp)),
- BPF_JMP_IMM(BPF_JLE, BPF_REG_4, 40, 2),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- /* *(u32 *)(r10 -8) = r4 R4=umax=40 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
- /* r4 = (*u32 *)(r10 - 8) */
- BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -8),
- /* r2 += r4 R2=pkt R4=umax=40 */
- BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_4),
- /* r0 = r2 R2=pkt,umax=40 R4=umax=40 */
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- /* r2 += 20 R0=pkt,umax=40 R2=pkt,umax=40 */
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 20),
- /* if (r2 > r3) R0=pkt,umax=40 R2=pkt,off=20,umax=40 */
- BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_3, 1),
- /* r0 = *(u32 *)r0 R0=pkt,r=20,umax=40 R2=pkt,off=20,r=20,umax=40 */
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "Spill a u32 scalar at fp-4 and then at fp-8",
- .insns = {
- /* r4 = 4321 */
- BPF_MOV32_IMM(BPF_REG_4, 4321),
- /* *(u32 *)(r10 -4) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -4),
- /* *(u32 *)(r10 -8) = r4 */
- BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
- /* r4 = *(u64 *)(r10 -8) */
- BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
generated by cgit (git 2.34.1) at 2024-06-24 04:27:14 +0000