diff options
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/ref_tracking.c')
-rw-r--r-- | tools/testing/selftests/bpf/verifier/ref_tracking.c | 1082 |
1 files changed, 0 insertions, 1082 deletions
diff --git a/tools/testing/selftests/bpf/verifier/ref_tracking.c b/tools/testing/selftests/bpf/verifier/ref_tracking.c deleted file mode 100644 index 9540164712b7..000000000000 --- a/tools/testing/selftests/bpf/verifier/ref_tracking.c +++ /dev/null @@ -1,1082 +0,0 @@ -{ - "reference tracking: leak potential reference", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), /* leak reference */ - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: leak potential reference to sock_common", - .insns = { - BPF_SK_LOOKUP(skc_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), /* leak reference */ - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: leak potential reference on stack", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), - BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_0, 0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: leak potential reference on stack 2", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), - BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_0, 0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: zero potential reference", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_IMM(BPF_REG_0, 0), /* leak reference */ - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: zero potential reference to sock_common", - .insns = { - BPF_SK_LOOKUP(skc_lookup_tcp), - BPF_MOV64_IMM(BPF_REG_0, 0), /* leak reference */ - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: copy and zero potential references", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_MOV64_IMM(BPF_REG_7, 0), /* leak reference */ - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: acquire/release user key reference", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, -3), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_LSM, - .kfunc = "bpf", - .expected_attach_type = BPF_LSM_MAC, - .flags = BPF_F_SLEEPABLE, - .fixup_kfunc_btf_id = { - { "bpf_lookup_user_key", 2 }, - { "bpf_key_put", 5 }, - }, - .result = ACCEPT, -}, -{ - "reference tracking: acquire/release system key reference", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 1), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_LSM, - .kfunc = "bpf", - .expected_attach_type = BPF_LSM_MAC, - .flags = BPF_F_SLEEPABLE, - .fixup_kfunc_btf_id = { - { "bpf_lookup_system_key", 1 }, - { "bpf_key_put", 4 }, - }, - .result = ACCEPT, -}, -{ - "reference tracking: release user key reference without check", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, -3), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_LSM, - .kfunc = "bpf", - .expected_attach_type = BPF_LSM_MAC, - .flags = BPF_F_SLEEPABLE, - .errstr = "arg#0 is ptr_or_null_ expected ptr_ or socket", - .fixup_kfunc_btf_id = { - { "bpf_lookup_user_key", 2 }, - { "bpf_key_put", 4 }, - }, - .result = REJECT, -}, -{ - "reference tracking: release system key reference without check", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 1), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_LSM, - .kfunc = "bpf", - .expected_attach_type = BPF_LSM_MAC, - .flags = BPF_F_SLEEPABLE, - .errstr = "arg#0 is ptr_or_null_ expected ptr_ or socket", - .fixup_kfunc_btf_id = { - { "bpf_lookup_system_key", 1 }, - { "bpf_key_put", 3 }, - }, - .result = REJECT, -}, -{ - "reference tracking: release with NULL key pointer", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_LSM, - .kfunc = "bpf", - .expected_attach_type = BPF_LSM_MAC, - .flags = BPF_F_SLEEPABLE, - .errstr = "arg#0 pointer type STRUCT bpf_key must point to scalar, or struct with scalar", - .fixup_kfunc_btf_id = { - { "bpf_key_put", 1 }, - }, - .result = REJECT, -}, -{ - "reference tracking: leak potential reference to user key", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, -3), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_LSM, - .kfunc = "bpf", - .expected_attach_type = BPF_LSM_MAC, - .flags = BPF_F_SLEEPABLE, - .errstr = "Unreleased reference", - .fixup_kfunc_btf_id = { - { "bpf_lookup_user_key", 2 }, - }, - .result = REJECT, -}, -{ - "reference tracking: leak potential reference to system key", - .insns = { - BPF_MOV64_IMM(BPF_REG_1, 1), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_LSM, - .kfunc = "bpf", - .expected_attach_type = BPF_LSM_MAC, - .flags = BPF_F_SLEEPABLE, - .errstr = "Unreleased reference", - .fixup_kfunc_btf_id = { - { "bpf_lookup_system_key", 1 }, - }, - .result = REJECT, -}, -{ - "reference tracking: release reference without check", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - /* reference in r0 may be NULL */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "type=sock_or_null expected=sock", - .result = REJECT, -}, -{ - "reference tracking: release reference to sock_common without check", - .insns = { - BPF_SK_LOOKUP(skc_lookup_tcp), - /* reference in r0 may be NULL */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "type=sock_common_or_null expected=sock", - .result = REJECT, -}, -{ - "reference tracking: release reference", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: release reference to sock_common", - .insns = { - BPF_SK_LOOKUP(skc_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: release reference 2", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: release reference twice", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "type=scalar expected=sock", - .result = REJECT, -}, -{ - "reference tracking: release reference twice inside branch", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), /* goto end */ - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "type=scalar expected=sock", - .result = REJECT, -}, -{ - "reference tracking: alloc, check, free in one subbranch", - .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_MOV64_REG(BPF_REG_0, BPF_REG_2), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 16), - /* if (offsetof(skb, mark) > data_len) exit; */ - BPF_JMP_REG(BPF_JLE, BPF_REG_0, BPF_REG_3, 1), - BPF_EXIT_INSN(), - BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_2, - offsetof(struct __sk_buff, mark)), - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 1), /* mark == 0? */ - /* Leak reference in R0 */ - BPF_EXIT_INSN(), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), /* sk NULL? */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "reference tracking: alloc, check, free in both subbranches", - .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_MOV64_REG(BPF_REG_0, BPF_REG_2), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 16), - /* if (offsetof(skb, mark) > data_len) exit; */ - BPF_JMP_REG(BPF_JLE, BPF_REG_0, BPF_REG_3, 1), - BPF_EXIT_INSN(), - BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_2, - offsetof(struct __sk_buff, mark)), - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 4), /* mark == 0? */ - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), /* sk NULL? */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), /* sk NULL? */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "reference tracking in call: free reference in subprog", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), /* unchecked reference */ - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - - /* subprog 1 */ - BPF_MOV64_REG(BPF_REG_2, BPF_REG_1), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_2, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking in call: free reference in subprog and outside", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), /* unchecked reference */ - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - - /* subprog 1 */ - BPF_MOV64_REG(BPF_REG_2, BPF_REG_1), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_2, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "type=scalar expected=sock", - .result = REJECT, -}, -{ - "reference tracking in call: alloc & leak reference in subprog", - .insns = { - BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - - /* subprog 1 */ - BPF_MOV64_REG(BPF_REG_6, BPF_REG_4), - BPF_SK_LOOKUP(sk_lookup_tcp), - /* spill unchecked sk_ptr into stack of caller */ - BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_0, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking in call: alloc in subprog, release outside", - .insns = { - BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - - /* subprog 1 */ - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_EXIT_INSN(), /* return sk */ - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .retval = POINTER_VALUE, - .result = ACCEPT, -}, -{ - "reference tracking in call: sk_ptr leak into caller stack", - .insns = { - BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - - /* subprog 1 */ - BPF_MOV64_REG(BPF_REG_5, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, -8), - BPF_STX_MEM(BPF_DW, BPF_REG_5, BPF_REG_4, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 5), - /* spill unchecked sk_ptr into stack of caller */ - BPF_MOV64_REG(BPF_REG_5, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, -8), - BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_5, 0), - BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_0, 0), - BPF_EXIT_INSN(), - - /* subprog 2 */ - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking in call: sk_ptr spill into caller stack", - .insns = { - BPF_MOV64_REG(BPF_REG_4, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -8), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - - /* subprog 1 */ - BPF_MOV64_REG(BPF_REG_5, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, -8), - BPF_STX_MEM(BPF_DW, BPF_REG_5, BPF_REG_4, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 8), - /* spill unchecked sk_ptr into stack of caller */ - BPF_MOV64_REG(BPF_REG_5, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, -8), - BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_5, 0), - BPF_STX_MEM(BPF_DW, BPF_REG_4, BPF_REG_0, 0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), - /* now the sk_ptr is verified, free the reference */ - BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_4, 0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - - /* subprog 2 */ - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: allow LD_ABS", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LD_ABS(BPF_B, 0), - BPF_LD_ABS(BPF_H, 0), - BPF_LD_ABS(BPF_W, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: forbid LD_ABS while holding reference", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_LD_ABS(BPF_B, 0), - BPF_LD_ABS(BPF_H, 0), - BPF_LD_ABS(BPF_W, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "BPF_LD_[ABS|IND] cannot be mixed with socket references", - .result = REJECT, -}, -{ - "reference tracking: allow LD_IND", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_MOV64_IMM(BPF_REG_7, 1), - BPF_LD_IND(BPF_W, BPF_REG_7, -0x200000), - BPF_MOV64_REG(BPF_REG_0, BPF_REG_7), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, - .retval = 1, -}, -{ - "reference tracking: forbid LD_IND while holding reference", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_4, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_7, 1), - BPF_LD_IND(BPF_W, BPF_REG_7, -0x200000), - BPF_MOV64_REG(BPF_REG_0, BPF_REG_7), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_4), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "BPF_LD_[ABS|IND] cannot be mixed with socket references", - .result = REJECT, -}, -{ - "reference tracking: check reference or tail call", - .insns = { - BPF_MOV64_REG(BPF_REG_7, BPF_REG_1), - BPF_SK_LOOKUP(sk_lookup_tcp), - /* if (sk) bpf_sk_release() */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 7), - /* bpf_tail_call() */ - BPF_MOV64_IMM(BPF_REG_3, 3), - BPF_LD_MAP_FD(BPF_REG_2, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .fixup_prog1 = { 17 }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: release reference then tail call", - .insns = { - BPF_MOV64_REG(BPF_REG_7, BPF_REG_1), - BPF_SK_LOOKUP(sk_lookup_tcp), - /* if (sk) bpf_sk_release() */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - /* bpf_tail_call() */ - BPF_MOV64_IMM(BPF_REG_3, 3), - BPF_LD_MAP_FD(BPF_REG_2, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .fixup_prog1 = { 18 }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: leak possible reference over tail call", - .insns = { - BPF_MOV64_REG(BPF_REG_7, BPF_REG_1), - /* Look up socket and store in REG_6 */ - BPF_SK_LOOKUP(sk_lookup_tcp), - /* bpf_tail_call() */ - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_3, 3), - BPF_LD_MAP_FD(BPF_REG_2, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), - BPF_MOV64_IMM(BPF_REG_0, 0), - /* if (sk) bpf_sk_release() */ - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .fixup_prog1 = { 16 }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "tail_call would lead to reference leak", - .result = REJECT, -}, -{ - "reference tracking: leak checked reference over tail call", - .insns = { - BPF_MOV64_REG(BPF_REG_7, BPF_REG_1), - /* Look up socket and store in REG_6 */ - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - /* if (!sk) goto end */ - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7), - /* bpf_tail_call() */ - BPF_MOV64_IMM(BPF_REG_3, 0), - BPF_LD_MAP_FD(BPF_REG_2, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_7), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .fixup_prog1 = { 17 }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "tail_call would lead to reference leak", - .result = REJECT, -}, -{ - "reference tracking: mangle and release sock_or_null", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 5), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "R1 pointer arithmetic on sock_or_null prohibited", - .result = REJECT, -}, -{ - "reference tracking: mangle and release sock", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 5), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "R1 pointer arithmetic on sock prohibited", - .result = REJECT, -}, -{ - "reference tracking: access member", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), - BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_0, 4), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: write to member", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_LD_IMM64(BPF_REG_2, 42), - BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_2, - offsetof(struct bpf_sock, mark)), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LD_IMM64(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "cannot write into sock", - .result = REJECT, -}, -{ - "reference tracking: invalid 64-bit access of member", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), - BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "invalid sock access off=0 size=8", - .result = REJECT, -}, -{ - "reference tracking: access after release", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "!read_ok", - .result = REJECT, -}, -{ - "reference tracking: direct access for lookup", - .insns = { - /* Check that the packet is at least 64B long */ - 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_MOV64_REG(BPF_REG_0, BPF_REG_2), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 64), - BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 9), - /* sk = sk_lookup_tcp(ctx, skb->data, ...) */ - BPF_MOV64_IMM(BPF_REG_3, sizeof(struct bpf_sock_tuple)), - BPF_MOV64_IMM(BPF_REG_4, 0), - BPF_MOV64_IMM(BPF_REG_5, 0), - BPF_EMIT_CALL(BPF_FUNC_sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3), - BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_0, 4), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: use ptr from bpf_tcp_sock() after release", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_tcp_sock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_7, offsetof(struct bpf_tcp_sock, snd_cwnd)), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = REJECT, - .errstr = "invalid mem access", - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "reference tracking: use ptr from bpf_sk_fullsock() after release", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_fullsock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_7, offsetof(struct bpf_sock, type)), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = REJECT, - .errstr = "invalid mem access", - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "reference tracking: use ptr from bpf_sk_fullsock(tp) after release", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_tcp_sock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_fullsock), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_JMP_IMM(BPF_JNE, BPF_REG_6, 0, 1), - BPF_EXIT_INSN(), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, offsetof(struct bpf_sock, type)), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = REJECT, - .errstr = "invalid mem access", - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "reference tracking: use sk after bpf_sk_release(tp)", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_tcp_sock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, offsetof(struct bpf_sock, type)), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = REJECT, - .errstr = "invalid mem access", - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "reference tracking: use ptr from bpf_get_listener_sock() after bpf_sk_release(sk)", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_get_listener_sock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, offsetof(struct bpf_sock, src_port)), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: bpf_sk_release(listen_sk)", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_get_listener_sock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, offsetof(struct bpf_sock, type)), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = REJECT, - .errstr = "R1 must be referenced when passed to release function", -}, -{ - /* !bpf_sk_fullsock(sk) is checked but !bpf_tcp_sock(sk) is not checked */ - "reference tracking: tp->snd_cwnd after bpf_sk_fullsock(sk) and bpf_tcp_sock(sk)", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_fullsock), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_tcp_sock), - BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_8, offsetof(struct bpf_tcp_sock, snd_cwnd)), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = REJECT, - .errstr = "invalid mem access", -}, -{ - "reference tracking: branch tracking valid pointer null comparison", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_3, 1), - BPF_JMP_IMM(BPF_JNE, BPF_REG_6, 0, 1), - BPF_MOV64_IMM(BPF_REG_3, 0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 2), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, -}, -{ - "reference tracking: branch tracking valid pointer value comparison", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_3, 1), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 4), - BPF_MOV64_IMM(BPF_REG_3, 0), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 1234, 2), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .errstr = "Unreleased reference", - .result = REJECT, -}, -{ - "reference tracking: bpf_sk_release(btf_tcp_sock)", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_skc_to_tcp_sock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = ACCEPT, - .result_unpriv = REJECT, - .errstr_unpriv = "unknown func", -}, -{ - "reference tracking: use ptr from bpf_skc_to_tcp_sock() after release", - .insns = { - BPF_SK_LOOKUP(sk_lookup_tcp), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_6, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_EMIT_CALL(BPF_FUNC_skc_to_tcp_sock), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 3), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_7, BPF_REG_0), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_EMIT_CALL(BPF_FUNC_sk_release), - BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_7, 0), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .result = REJECT, - .errstr = "invalid mem access", - .result_unpriv = REJECT, - .errstr_unpriv = "unknown func", -}, -{ - "reference tracking: try to leak released ptr reg", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_0, -4), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_9, BPF_REG_0), - - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_MOV64_IMM(BPF_REG_2, 8), - BPF_MOV64_IMM(BPF_REG_3, 0), - BPF_EMIT_CALL(BPF_FUNC_ringbuf_reserve), - BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), - BPF_EXIT_INSN(), - BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), - - BPF_MOV64_REG(BPF_REG_1, BPF_REG_8), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_EMIT_CALL(BPF_FUNC_ringbuf_discard), - BPF_MOV64_IMM(BPF_REG_0, 0), - - BPF_STX_MEM(BPF_DW, BPF_REG_9, BPF_REG_8, 0), - BPF_EXIT_INSN() - }, - .fixup_map_array_48b = { 4 }, - .fixup_map_ringbuf = { 11 }, - .result = ACCEPT, - .result_unpriv = REJECT, - .errstr_unpriv = "R8 !read_ok" -}, |