Test verifier/raw_stack.c automatically converted to use inline assembly.
Signed-off-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
---
.../selftests/bpf/prog_tests/verifier.c | 2 +
.../selftests/bpf/progs/verifier_raw_stack.c | 371 ++++++++++++++++++
.../selftests/bpf/verifier/raw_stack.c | 305 --------------
3 files changed, 373 insertions(+), 305 deletions(-)
create mode 100644 tools/testing/selftests/bpf/progs/verifier_raw_stack.c
delete mode 100644 tools/testing/selftests/bpf/verifier/raw_stack.c
diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c
index bd48a584a356..4a73cac3f9ba 100644
--- a/tools/testing/selftests/bpf/prog_tests/verifier.c
+++ b/tools/testing/selftests/bpf/prog_tests/verifier.c
@@ -28,6 +28,7 @@
#include "verifier_map_ret_val.skel.h"
#include "verifier_masking.skel.h"
#include "verifier_meta_access.skel.h"
+#include "verifier_raw_stack.skel.h"
__maybe_unused
static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
@@ -78,3 +79,4 @@ void test_verifier_map_ptr(void) { RUN(verifier_map_ptr); }
void test_verifier_map_ret_val(void) { RUN(verifier_map_ret_val); }
void test_verifier_masking(void) { RUN(verifier_masking); }
void test_verifier_meta_access(void) { RUN(verifier_meta_access); }
+void test_verifier_raw_stack(void) { RUN(verifier_raw_stack); }
diff --git a/tools/testing/selftests/bpf/progs/verifier_raw_stack.c b/tools/testing/selftests/bpf/progs/verifier_raw_stack.c
new file mode 100644
index 000000000000..efbfc3a4ad6a
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/verifier_raw_stack.c
@@ -0,0 +1,371 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Converted from tools/testing/selftests/bpf/verifier/raw_stack.c */
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_misc.h"
+
+SEC("tc")
+__description("raw_stack: no skb_load_bytes")
+__failure __msg("invalid read from stack R6 off=-8 size=8")
+__naked void stack_no_skb_load_bytes(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -8; \
+ r3 = r6; \
+ r4 = 8; \
+ /* Call to skb_load_bytes() omitted. */ \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" ::: __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, negative len")
+__failure __msg("R4 min value is negative")
+__naked void skb_load_bytes_negative_len(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -8; \
+ r3 = r6; \
+ r4 = -8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, negative len 2")
+__failure __msg("R4 min value is negative")
+__naked void load_bytes_negative_len_2(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -8; \
+ r3 = r6; \
+ r4 = %[__imm_0]; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes),
+ __imm_const(__imm_0, ~0)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, zero len")
+__failure __msg("invalid zero-sized read")
+__naked void skb_load_bytes_zero_len(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -8; \
+ r3 = r6; \
+ r4 = 0; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, no init")
+__success __retval(0)
+__naked void skb_load_bytes_no_init(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -8; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, init")
+__success __retval(0)
+__naked void stack_skb_load_bytes_init(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -8; \
+ r3 = 0xcafe; \
+ *(u64*)(r6 + 0) = r3; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, spilled regs around bounds")
+__success __retval(0)
+__naked void bytes_spilled_regs_around_bounds(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -16; \
+ *(u64*)(r6 - 8) = r1; \
+ *(u64*)(r6 + 8) = r1; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 - 8); \
+ r2 = *(u64*)(r6 + 8); \
+ r0 = *(u32*)(r0 + %[__sk_buff_mark]); \
+ r2 = *(u32*)(r2 + %[__sk_buff_priority]); \
+ r0 += r2; \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes),
+ __imm_const(__sk_buff_mark, offsetof(struct __sk_buff, mark)),
+ __imm_const(__sk_buff_priority, offsetof(struct __sk_buff, priority))
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, spilled regs corruption")
+__failure __msg("R0 invalid mem access 'scalar'")
+__flag(BPF_F_ANY_ALIGNMENT)
+__naked void load_bytes_spilled_regs_corruption(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -8; \
+ *(u64*)(r6 + 0) = r1; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ r0 = *(u32*)(r0 + %[__sk_buff_mark]); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes),
+ __imm_const(__sk_buff_mark, offsetof(struct __sk_buff, mark))
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, spilled regs corruption 2")
+__failure __msg("R3 invalid mem access 'scalar'")
+__flag(BPF_F_ANY_ALIGNMENT)
+__naked void bytes_spilled_regs_corruption_2(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -16; \
+ *(u64*)(r6 - 8) = r1; \
+ *(u64*)(r6 + 0) = r1; \
+ *(u64*)(r6 + 8) = r1; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 - 8); \
+ r2 = *(u64*)(r6 + 8); \
+ r3 = *(u64*)(r6 + 0); \
+ r0 = *(u32*)(r0 + %[__sk_buff_mark]); \
+ r2 = *(u32*)(r2 + %[__sk_buff_priority]); \
+ r0 += r2; \
+ r3 = *(u32*)(r3 + %[__sk_buff_pkt_type]); \
+ r0 += r3; \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes),
+ __imm_const(__sk_buff_mark, offsetof(struct __sk_buff, mark)),
+ __imm_const(__sk_buff_pkt_type, offsetof(struct __sk_buff, pkt_type)),
+ __imm_const(__sk_buff_priority, offsetof(struct __sk_buff, priority))
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, spilled regs + data")
+__success __retval(0)
+__naked void load_bytes_spilled_regs_data(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -16; \
+ *(u64*)(r6 - 8) = r1; \
+ *(u64*)(r6 + 0) = r1; \
+ *(u64*)(r6 + 8) = r1; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 - 8); \
+ r2 = *(u64*)(r6 + 8); \
+ r3 = *(u64*)(r6 + 0); \
+ r0 = *(u32*)(r0 + %[__sk_buff_mark]); \
+ r2 = *(u32*)(r2 + %[__sk_buff_priority]); \
+ r0 += r2; \
+ r0 += r3; \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes),
+ __imm_const(__sk_buff_mark, offsetof(struct __sk_buff, mark)),
+ __imm_const(__sk_buff_priority, offsetof(struct __sk_buff, priority))
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, invalid access 1")
+__failure __msg("invalid indirect access to stack R3 off=-513 size=8")
+__naked void load_bytes_invalid_access_1(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -513; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, invalid access 2")
+__failure __msg("invalid indirect access to stack R3 off=-1 size=8")
+__naked void load_bytes_invalid_access_2(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -1; \
+ r3 = r6; \
+ r4 = 8; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, invalid access 3")
+__failure __msg("R4 min value is negative")
+__naked void load_bytes_invalid_access_3(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += 0xffffffff; \
+ r3 = r6; \
+ r4 = 0xffffffff; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, invalid access 4")
+__failure
+__msg("R4 unbounded memory access, use 'var &= const' or 'if (var < const)'")
+__naked void load_bytes_invalid_access_4(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -1; \
+ r3 = r6; \
+ r4 = 0x7fffffff; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, invalid access 5")
+__failure
+__msg("R4 unbounded memory access, use 'var &= const' or 'if (var < const)'")
+__naked void load_bytes_invalid_access_5(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -512; \
+ r3 = r6; \
+ r4 = 0x7fffffff; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, invalid access 6")
+__failure __msg("invalid zero-sized read")
+__naked void load_bytes_invalid_access_6(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -512; \
+ r3 = r6; \
+ r4 = 0; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("raw_stack: skb_load_bytes, large access")
+__success __retval(0)
+__naked void skb_load_bytes_large_access(void)
+{
+ asm volatile (" \
+ r2 = 4; \
+ r6 = r10; \
+ r6 += -512; \
+ r3 = r6; \
+ r4 = 512; \
+ call %[bpf_skb_load_bytes]; \
+ r0 = *(u64*)(r6 + 0); \
+ exit; \
+" :
+ : __imm(bpf_skb_load_bytes)
+ : __clobber_all);
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/verifier/raw_stack.c b/tools/testing/selftests/bpf/verifier/raw_stack.c
deleted file mode 100644
index eb5ed936580b..000000000000
--- a/tools/testing/selftests/bpf/verifier/raw_stack.c
+++ /dev/null
@@ -1,305 +0,0 @@
-{
- "raw_stack: no skb_load_bytes",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- /* Call to skb_load_bytes() omitted. */
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid read from stack R6 off=-8 size=8",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, negative len",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, -8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "R4 min value is negative",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, negative len 2",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, ~0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "R4 min value is negative",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, zero len",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid zero-sized read",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, no init",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, init",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
- BPF_ST_MEM(BPF_DW, BPF_REG_6, 0, 0xcafe),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, spilled regs around bounds",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8),
- BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
- offsetof(struct __sk_buff, mark)),
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2,
- offsetof(struct __sk_buff, priority)),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, spilled regs corruption",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
- offsetof(struct __sk_buff, mark)),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "R0 invalid mem access 'scalar'",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "raw_stack: skb_load_bytes, spilled regs corruption 2",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8),
- BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8),
- BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_6, 0),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
- offsetof(struct __sk_buff, mark)),
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2,
- offsetof(struct __sk_buff, priority)),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2),
- BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_3,
- offsetof(struct __sk_buff, pkt_type)),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "R3 invalid mem access 'scalar'",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "raw_stack: skb_load_bytes, spilled regs + data",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
- BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8),
- BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8),
- BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_6, 0),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
- offsetof(struct __sk_buff, mark)),
- BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2,
- offsetof(struct __sk_buff, priority)),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, invalid access 1",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -513),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid indirect access to stack R3 off=-513 size=8",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, invalid access 2",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -1),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 8),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid indirect access to stack R3 off=-1 size=8",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, invalid access 3",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 0xffffffff),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 0xffffffff),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "R4 min value is negative",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, invalid access 4",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -1),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 0x7fffffff),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "R4 unbounded memory access, use 'var &= const' or 'if (var < const)'",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, invalid access 5",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 0x7fffffff),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "R4 unbounded memory access, use 'var &= const' or 'if (var < const)'",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, invalid access 6",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = REJECT,
- .errstr = "invalid zero-sized read",
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
- "raw_stack: skb_load_bytes, large access",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512),
- BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
- BPF_MOV64_IMM(BPF_REG_4, 512),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
--
2.40.0
