diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/verifier_bounds.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/verifier_bounds.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/verifier_bounds.c b/tools/testing/selftests/bpf/progs/verifier_bounds.c index 0a72e0228ea9..411a18437d7e 100644 --- a/tools/testing/selftests/bpf/progs/verifier_bounds.c +++ b/tools/testing/selftests/bpf/progs/verifier_bounds.c @@ -1709,4 +1709,158 @@ __naked void jeq_disagreeing_tnums(void *ctx) : __clobber_all); } +SEC("socket") +__description("conditional jump on same register, branch taken") +__not_msg("20: (b7) r0 = 1 {{.*}} R0=1") +__success __log_level(2) +__retval(0) __flag(BPF_F_TEST_REG_INVARIANTS) +__naked void condition_jump_on_same_register(void *ctx) +{ + asm volatile(" \ + call %[bpf_get_prandom_u32]; \ + w8 = 0x80000000; \ + r0 &= r8; \ + if r0 == r0 goto +1; \ + goto l1_%=; \ + if r0 >= r0 goto +1; \ + goto l1_%=; \ + if r0 s>= r0 goto +1; \ + goto l1_%=; \ + if r0 <= r0 goto +1; \ + goto l1_%=; \ + if r0 s<= r0 goto +1; \ + goto l1_%=; \ + if r0 != r0 goto l1_%=; \ + if r0 > r0 goto l1_%=; \ + if r0 s> r0 goto l1_%=; \ + if r0 < r0 goto l1_%=; \ + if r0 s< r0 goto l1_%=; \ +l0_%=: r0 = 0; \ + exit; \ +l1_%=: r0 = 1; \ + exit; \ +" : + : __imm(bpf_get_prandom_u32) + : __clobber_all); +} + +SEC("socket") +__description("jset on same register, constant value branch taken") +__not_msg("7: (b7) r0 = 1 {{.*}} R0=1") +__success __log_level(2) +__retval(0) __flag(BPF_F_TEST_REG_INVARIANTS) +__naked void jset_on_same_register_1(void *ctx) +{ + asm volatile(" \ + r0 = 0; \ + if r0 & r0 goto l1_%=; \ + r0 = 1; \ + if r0 & r0 goto +1; \ + goto l1_%=; \ +l0_%=: r0 = 0; \ + exit; \ +l1_%=: r0 = 1; \ + exit; \ +" : + : __imm(bpf_get_prandom_u32) + : __clobber_all); +} + +SEC("socket") +__description("jset on same register, scalar value branch taken") +__not_msg("12: (b7) r0 = 1 {{.*}} R0=1") +__success __log_level(2) +__retval(0) __flag(BPF_F_TEST_REG_INVARIANTS) +__naked void jset_on_same_register_2(void *ctx) +{ + asm volatile(" \ + /* range [1;2] */ \ + call %[bpf_get_prandom_u32]; \ + r0 &= 0x1; \ + r0 += 1; \ + if r0 & r0 goto +1; \ + goto l1_%=; \ + /* range [-2;-1] */ \ + call %[bpf_get_prandom_u32]; \ + r0 &= 0x1; \ + r0 -= 2; \ + if r0 & r0 goto +1; \ + goto l1_%=; \ +l0_%=: r0 = 0; \ + exit; \ +l1_%=: r0 = 1; \ + exit; \ +" : + : __imm(bpf_get_prandom_u32) + : __clobber_all); +} + +SEC("socket") +__description("jset on same register, scalar value unknown branch 1") +__msg("3: (b7) r0 = 0 {{.*}} R0=0") +__msg("5: (b7) r0 = 1 {{.*}} R0=1") +__success __log_level(2) +__flag(BPF_F_TEST_REG_INVARIANTS) +__naked void jset_on_same_register_3(void *ctx) +{ + asm volatile(" \ + /* range [0;1] */ \ + call %[bpf_get_prandom_u32]; \ + r0 &= 0x1; \ + if r0 & r0 goto l1_%=; \ +l0_%=: r0 = 0; \ + exit; \ +l1_%=: r0 = 1; \ + exit; \ +" : + : __imm(bpf_get_prandom_u32) + : __clobber_all); +} + +SEC("socket") +__description("jset on same register, scalar value unknown branch 2") +__msg("4: (b7) r0 = 0 {{.*}} R0=0") +__msg("6: (b7) r0 = 1 {{.*}} R0=1") +__success __log_level(2) +__flag(BPF_F_TEST_REG_INVARIANTS) +__naked void jset_on_same_register_4(void *ctx) +{ + asm volatile(" \ + /* range [-1;0] */ \ + call %[bpf_get_prandom_u32]; \ + r0 &= 0x1; \ + r0 -= 1; \ + if r0 & r0 goto l1_%=; \ +l0_%=: r0 = 0; \ + exit; \ +l1_%=: r0 = 1; \ + exit; \ +" : + : __imm(bpf_get_prandom_u32) + : __clobber_all); +} + +SEC("socket") +__description("jset on same register, scalar value unknown branch 3") +__msg("4: (b7) r0 = 0 {{.*}} R0=0") +__msg("6: (b7) r0 = 1 {{.*}} R0=1") +__success __log_level(2) +__flag(BPF_F_TEST_REG_INVARIANTS) +__naked void jset_on_same_register_5(void *ctx) +{ + asm volatile(" \ + /* range [-1;1] */ \ + call %[bpf_get_prandom_u32]; \ + r0 &= 0x2; \ + r0 -= 1; \ + if r0 & r0 goto l1_%=; \ +l0_%=: r0 = 0; \ + exit; \ +l1_%=: r0 = 1; \ + exit; \ +" : + : __imm(bpf_get_prandom_u32) + : __clobber_all); +} + char _license[] SEC("license") = "GPL"; |