diff options
Diffstat (limited to 'tools/testing/selftests/bpf/test_verifier.c')
-rw-r--r-- | tools/testing/selftests/bpf/test_verifier.c | 2836 |
1 files changed, 2836 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c new file mode 100644 index 000000000000..0ef8eaf6cea7 --- /dev/null +++ b/tools/testing/selftests/bpf/test_verifier.c @@ -0,0 +1,2836 @@ +/* + * Testsuite for eBPF verifier + * + * Copyright (c) 2014 PLUMgrid, http://plumgrid.com + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + */ + +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <string.h> +#include <stddef.h> +#include <stdbool.h> +#include <sched.h> + +#include <sys/resource.h> + +#include <linux/unistd.h> +#include <linux/filter.h> +#include <linux/bpf_perf_event.h> +#include <linux/bpf.h> + +#include "../../../include/linux/filter.h" + +#include "bpf_sys.h" + +#ifndef ARRAY_SIZE +# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) +#endif + +#define MAX_INSNS 512 +#define MAX_FIXUPS 8 + +struct bpf_test { + const char *descr; + struct bpf_insn insns[MAX_INSNS]; + int fixup_map1[MAX_FIXUPS]; + int fixup_map2[MAX_FIXUPS]; + int fixup_prog[MAX_FIXUPS]; + const char *errstr; + const char *errstr_unpriv; + enum { + UNDEF, + ACCEPT, + REJECT + } result, result_unpriv; + enum bpf_prog_type prog_type; +}; + +/* Note we want this to be 64 bit aligned so that the end of our array is + * actually the end of the structure. + */ +#define MAX_ENTRIES 11 + +struct test_val { + unsigned int index; + int foo[MAX_ENTRIES]; +}; + +static struct bpf_test tests[] = { + { + "add+sub+mul", + .insns = { + BPF_MOV64_IMM(BPF_REG_1, 1), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 2), + BPF_MOV64_IMM(BPF_REG_2, 3), + BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_2), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1), + BPF_ALU64_IMM(BPF_MUL, BPF_REG_1, 3), + BPF_MOV64_REG(BPF_REG_0, BPF_REG_1), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + }, + { + "unreachable", + .insns = { + BPF_EXIT_INSN(), + BPF_EXIT_INSN(), + }, + .errstr = "unreachable", + .result = REJECT, + }, + { + "unreachable2", + .insns = { + BPF_JMP_IMM(BPF_JA, 0, 0, 1), + BPF_JMP_IMM(BPF_JA, 0, 0, 0), + BPF_EXIT_INSN(), + }, + .errstr = "unreachable", + .result = REJECT, + }, + { + "out of range jump", + .insns = { + BPF_JMP_IMM(BPF_JA, 0, 0, 1), + BPF_EXIT_INSN(), + }, + .errstr = "jump out of range", + .result = REJECT, + }, + { + "out of range jump2", + .insns = { + BPF_JMP_IMM(BPF_JA, 0, 0, -2), + BPF_EXIT_INSN(), + }, + .errstr = "jump out of range", + .result = REJECT, + }, + { + "test1 ld_imm64", + .insns = { + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), + BPF_LD_IMM64(BPF_REG_0, 0), + BPF_LD_IMM64(BPF_REG_0, 0), + BPF_LD_IMM64(BPF_REG_0, 1), + BPF_LD_IMM64(BPF_REG_0, 1), + BPF_MOV64_IMM(BPF_REG_0, 2), + BPF_EXIT_INSN(), + }, + .errstr = "invalid BPF_LD_IMM insn", + .errstr_unpriv = "R1 pointer comparison", + .result = REJECT, + }, + { + "test2 ld_imm64", + .insns = { + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), + BPF_LD_IMM64(BPF_REG_0, 0), + BPF_LD_IMM64(BPF_REG_0, 0), + BPF_LD_IMM64(BPF_REG_0, 1), + BPF_LD_IMM64(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .errstr = "invalid BPF_LD_IMM insn", + .errstr_unpriv = "R1 pointer comparison", + .result = REJECT, + }, + { + "test3 ld_imm64", + .insns = { + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), + BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0), + BPF_LD_IMM64(BPF_REG_0, 0), + BPF_LD_IMM64(BPF_REG_0, 0), + BPF_LD_IMM64(BPF_REG_0, 1), + BPF_LD_IMM64(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .errstr = "invalid bpf_ld_imm64 insn", + .result = REJECT, + }, + { + "test4 ld_imm64", + .insns = { + BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0), + BPF_EXIT_INSN(), + }, + .errstr = "invalid bpf_ld_imm64 insn", + .result = REJECT, + }, + { + "test5 ld_imm64", + .insns = { + BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0), + }, + .errstr = "invalid bpf_ld_imm64 insn", + .result = REJECT, + }, + { + "no bpf_exit", + .insns = { + BPF_ALU64_REG(BPF_MOV, BPF_REG_0, BPF_REG_2), + }, + .errstr = "jump out of range", + .result = REJECT, + }, + { + "loop (back-edge)", + .insns = { + BPF_JMP_IMM(BPF_JA, 0, 0, -1), + BPF_EXIT_INSN(), + }, + .errstr = "back-edge", + .result = REJECT, + }, + { + "loop2 (back-edge)", + .insns = { + BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_0), + BPF_MOV64_REG(BPF_REG_3, BPF_REG_0), + BPF_JMP_IMM(BPF_JA, 0, 0, -4), + BPF_EXIT_INSN(), + }, + .errstr = "back-edge", + .result = REJECT, + }, + { + "conditional loop", + .insns = { + BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_0), + BPF_MOV64_REG(BPF_REG_3, BPF_REG_0), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, -3), + BPF_EXIT_INSN(), + }, + .errstr = "back-edge", + .result = REJECT, + }, + { + "read uninitialized register", + .insns = { + BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), + BPF_EXIT_INSN(), + }, + .errstr = "R2 !read_ok", + .result = REJECT, + }, + { + "read invalid register", + .insns = { + BPF_MOV64_REG(BPF_REG_0, -1), + BPF_EXIT_INSN(), + }, + .errstr = "R15 is invalid", + .result = REJECT, + }, + { + "program doesn't init R0 before exit", + .insns = { + BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1), + BPF_EXIT_INSN(), + }, + .errstr = "R0 !read_ok", + .result = REJECT, + }, + { + "program doesn't init R0 before exit in all branches", + .insns = { + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 2), + BPF_EXIT_INSN(), + }, + .errstr = "R0 !read_ok", + .errstr_unpriv = "R1 pointer comparison", + .result = REJECT, + }, + { + "stack out of bounds", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, 8, 0), + BPF_EXIT_INSN(), + }, + .errstr = "invalid stack", + .result = REJECT, + }, + { + "invalid call insn1", + .insns = { + BPF_RAW_INSN(BPF_JMP | BPF_CALL | BPF_X, 0, 0, 0, 0), + BPF_EXIT_INSN(), + }, + .errstr = "BPF_CALL uses reserved", + .result = REJECT, + }, + { + "invalid call insn2", + .insns = { + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 1, 0), + BPF_EXIT_INSN(), + }, + .errstr = "BPF_CALL uses reserved", + .result = REJECT, + }, + { + "invalid function call", + .insns = { + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, 1234567), + BPF_EXIT_INSN(), + }, + .errstr = "invalid func 1234567", + .result = REJECT, + }, + { + "uninitialized stack1", + .insns = { + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 2 }, + .errstr = "invalid indirect read from stack", + .result = REJECT, + }, + { + "uninitialized stack2", + .insns = { + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_2, -8), + BPF_EXIT_INSN(), + }, + .errstr = "invalid read from stack", + .result = REJECT, + }, + { + "invalid argument register", + .insns = { + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_get_cgroup_classid), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_get_cgroup_classid), + BPF_EXIT_INSN(), + }, + .errstr = "R1 !read_ok", + .result = REJECT, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, + }, + { + "non-invalid argument register", + .insns = { + BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_1), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_get_cgroup_classid), + BPF_ALU64_REG(BPF_MOV, BPF_REG_1, BPF_REG_6), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_get_cgroup_classid), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, + }, + { + "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, + }, + { + "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 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 should fail */ + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "attempt to corrupt spilled", + .errstr = "corrupted spill", + .result = REJECT, + }, + { + "invalid src register in STX", + .insns = { + BPF_STX_MEM(BPF_B, BPF_REG_10, -1, -1), + BPF_EXIT_INSN(), + }, + .errstr = "R15 is invalid", + .result = REJECT, + }, + { + "invalid dst register in STX", + .insns = { + BPF_STX_MEM(BPF_B, 14, BPF_REG_10, -1), + BPF_EXIT_INSN(), + }, + .errstr = "R14 is invalid", + .result = REJECT, + }, + { + "invalid dst register in ST", + .insns = { + BPF_ST_MEM(BPF_B, 14, -1, -1), + BPF_EXIT_INSN(), + }, + .errstr = "R14 is invalid", + .result = REJECT, + }, + { + "invalid src register in LDX", + .insns = { + BPF_LDX_MEM(BPF_B, BPF_REG_0, 12, 0), + BPF_EXIT_INSN(), + }, + .errstr = "R12 is invalid", + .result = REJECT, + }, + { + "invalid dst register in LDX", + .insns = { + BPF_LDX_MEM(BPF_B, 11, BPF_REG_1, 0), + BPF_EXIT_INSN(), + }, + .errstr = "R11 is invalid", + .result = REJECT, + }, + { + "junk insn", + .insns = { + BPF_RAW_INSN(0, 0, 0, 0, 0), + BPF_EXIT_INSN(), + }, + .errstr = "invalid BPF_LD_IMM", + .result = REJECT, + }, + { + "junk insn2", + .insns = { + BPF_RAW_INSN(1, 0, 0, 0, 0), + BPF_EXIT_INSN(), + }, + .errstr = "BPF_LDX uses reserved fields", + .result = REJECT, + }, + { + "junk insn3", + .insns = { + BPF_RAW_INSN(-1, 0, 0, 0, 0), + BPF_EXIT_INSN(), + }, + .errstr = "invalid BPF_ALU opcode f0", + .result = REJECT, + }, + { + "junk insn4", + .insns = { + BPF_RAW_INSN(-1, -1, -1, -1, -1), + BPF_EXIT_INSN(), + }, + .errstr = "invalid BPF_ALU opcode f0", + .result = REJECT, + }, + { + "junk insn5", + .insns = { + BPF_RAW_INSN(0x7f, -1, -1, -1, -1), + BPF_EXIT_INSN(), + }, + .errstr = "BPF_ALU uses reserved fields", + .result = REJECT, + }, + { + "misaligned read from stack", + .insns = { + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_2, -4), + BPF_EXIT_INSN(), + }, + .errstr = "misaligned access", + .result = REJECT, + }, + { + "invalid map_fd for function call", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_delete_elem), + BPF_EXIT_INSN(), + }, + .errstr = "fd 0 is not pointing to valid bpf_map", + .result = REJECT, + }, + { + "don't check return value before access", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 3 }, + .errstr = "R0 invalid mem access 'map_value_or_null'", + .result = REJECT, + }, + { + "access memory with incorrect alignment", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 4, 0), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 3 }, + .errstr = "misaligned access", + .result = REJECT, + }, + { + "sometimes access memory with incorrect alignment", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), + BPF_EXIT_INSN(), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 3 }, + .errstr = "R0 invalid mem access", + .errstr_unpriv = "R0 leaks addr", + .result = REJECT, + }, + { + "jump test 1", + .insns = { + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1, -8), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 0), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 2, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 4, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 5, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -32, 5), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "R1 pointer comparison", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "jump test 2", + .insns = { + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 2), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 14), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 2), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 11), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 2, 2), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -32, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 8), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 2), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -40, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 5), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 4, 2), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -48, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 5, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -56, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "R1 pointer comparison", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "jump test 3", + .insns = { + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 0), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 19), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 3), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 0), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), + BPF_JMP_IMM(BPF_JA, 0, 0, 15), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 2, 3), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -32, 0), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -32), + BPF_JMP_IMM(BPF_JA, 0, 0, 11), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 3), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -40, 0), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -40), + BPF_JMP_IMM(BPF_JA, 0, 0, 7), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 4, 3), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -48, 0), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -48), + BPF_JMP_IMM(BPF_JA, 0, 0, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 5, 0), + BPF_ST_MEM(BPF_DW, BPF_REG_2, -56, 0), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -56), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_delete_elem), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 24 }, + .errstr_unpriv = "R1 pointer comparison", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "jump test 4", + .insns = { + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "R1 pointer comparison", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "jump test 5", + .insns = { + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_MOV64_REG(BPF_REG_3, BPF_REG_2), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 2), + BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8), + BPF_JMP_IMM(BPF_JA, 0, 0, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "R1 pointer comparison", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "access skb fields ok", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, len)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, mark)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, pkt_type)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, queue_mapping)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, protocol)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, vlan_present)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, vlan_tci)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + }, + { + "access skb fields bad1", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -4), + BPF_EXIT_INSN(), + }, + .errstr = "invalid bpf_context access", + .result = REJECT, + }, + { + "access skb fields bad2", + .insns = { + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 9), + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, pkt_type)), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 4 }, + .errstr = "different pointers", + .errstr_unpriv = "R1 pointer comparison", + .result = REJECT, + }, + { + "access skb fields bad3", + .insns = { + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, pkt_type)), + BPF_EXIT_INSN(), + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), + BPF_JMP_IMM(BPF_JA, 0, 0, -12), + }, + .fixup_map1 = { 6 }, + .errstr = "different pointers", + .errstr_unpriv = "R1 pointer comparison", + .result = REJECT, + }, + { + "access skb fields bad4", + .insns = { + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 3), + BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, len)), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), + BPF_JMP_IMM(BPF_JA, 0, 0, -13), + }, + .fixup_map1 = { 7 }, + .errstr = "different pointers", + .errstr_unpriv = "R1 pointer comparison", + .result = REJECT, + }, + { + "check skb->mark is not writeable by sockets", + .insns = { + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, mark)), + BPF_EXIT_INSN(), + }, + .errstr = "invalid bpf_context access", + .errstr_unpriv = "R1 leaks addr", + .result = REJECT, + }, + { + "check skb->tc_index is not writeable by sockets", + .insns = { + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, tc_index)), + BPF_EXIT_INSN(), + }, + .errstr = "invalid bpf_context access", + .errstr_unpriv = "R1 leaks addr", + .result = REJECT, + }, + { + "check non-u32 access to cb", + .insns = { + BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_EXIT_INSN(), + }, + .errstr = "invalid bpf_context access", + .errstr_unpriv = "R1 leaks addr", + .result = REJECT, + }, + { + "check out of range skb->cb access", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0]) + 256), + BPF_EXIT_INSN(), + }, + .errstr = "invalid bpf_context access", + .errstr_unpriv = "", + .result = REJECT, + .prog_type = BPF_PROG_TYPE_SCHED_ACT, + }, + { + "write skb fields from socket prog", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[4])), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, mark)), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, tc_index)), + BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, cb[2])), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .errstr_unpriv = "R1 leaks addr", + .result_unpriv = REJECT, + }, + { + "write skb fields from tc_cls_act prog", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, mark)), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, tc_index)), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, tc_index)), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, cb[3])), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "", + .result_unpriv = REJECT, + .result = ACCEPT, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, + }, + { + "PTR_TO_STACK store/load", + .insns = { + BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10), + BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + }, + { + "PTR_TO_STACK store/load - bad alignment on off", + .insns = { + BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), + BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2), + BPF_EXIT_INSN(), + }, + .result = REJECT, + .errstr = "misaligned access off -6 size 8", + }, + { + "PTR_TO_STACK store/load - bad alignment on reg", + .insns = { + BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10), + BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8), + BPF_EXIT_INSN(), + }, + .result = REJECT, + .errstr = "misaligned access off -2 size 8", + }, + { + "PTR_TO_STACK store/load - out of bounds low", + .insns = { + BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -80000), + BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8), + BPF_EXIT_INSN(), + }, + .result = REJECT, + .errstr = "invalid stack off=-79992 size=8", + }, + { + "PTR_TO_STACK store/load - out of bounds high", + .insns = { + BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), + BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8), + BPF_EXIT_INSN(), + }, + .result = REJECT, + .errstr = "invalid stack off=0 size=8", + }, + { + "unpriv: return pointer", + .insns = { + BPF_MOV64_REG(BPF_REG_0, BPF_REG_10), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .result_unpriv = REJECT, + .errstr_unpriv = "R0 leaks addr", + }, + { + "unpriv: add const to pointer", + .insns = { + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .result_unpriv = REJECT, + .errstr_unpriv = "R1 pointer arithmetic", + }, + { + "unpriv: add pointer to pointer", + .insns = { + BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_10), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .result_unpriv = REJECT, + .errstr_unpriv = "R1 pointer arithmetic", + }, + { + "unpriv: neg pointer", + .insns = { + BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .result_unpriv = REJECT, + .errstr_unpriv = "R1 pointer arithmetic", + }, + { + "unpriv: cmp pointer with const", + .insns = { + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .result_unpriv = REJECT, + .errstr_unpriv = "R1 pointer comparison", + }, + { + "unpriv: cmp pointer with pointer", + .insns = { + BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .result_unpriv = REJECT, + .errstr_unpriv = "R10 pointer comparison", + }, + { + "unpriv: check that printk is disallowed", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), + BPF_MOV64_IMM(BPF_REG_2, 8), + BPF_MOV64_REG(BPF_REG_3, BPF_REG_1), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_trace_printk), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "unknown func 6", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "unpriv: pass pointer to helper function", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_MOV64_REG(BPF_REG_3, BPF_REG_2), + BPF_MOV64_REG(BPF_REG_4, BPF_REG_2), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_update_elem), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 3 }, + .errstr_unpriv = "R4 leaks addr", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "unpriv: indirectly pass pointer on stack to helper function", + .insns = { + BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_map_lookup_elem), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map1 = { 3 }, + .errstr = "invalid indirect read from stack off -8+0 size 8", + .result = REJECT, + }, + { + "unpriv: mangle pointer on stack 1", + .insns = { + BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8), + BPF_ST_MEM(BPF_W, BPF_REG_10, -8, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "attempt to corrupt spilled", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "unpriv: mangle pointer on stack 2", + .insns = { + BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8), + BPF_ST_MEM(BPF_B, BPF_REG_10, -1, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "attempt to corrupt spilled", + .result_unpriv = REJECT, + .result = ACCEPT, + }, + { + "unpriv: read pointer from stack in small chunks", + .insns = { + BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_10, -8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr = "invalid size", + .result = REJECT, + }, + { + "unpriv: write pointer into ctx", + .insns = { + BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "R1 leaks addr", + .result_unpriv = REJECT, + .errstr = "invalid bpf_context access", + .result = REJECT, + }, + { + "unpriv: spill/fill of ctx", + .insns = { + 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_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + }, + { + "unpriv: spill/fill of ctx 2", + .insns = { + 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_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_get_hash_recalc), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, + }, + { + "unpriv: spill/fill of ctx 3", + .insns = { + 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_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_10, 0), |