selftests/bpf: verifier/bounds_mix_sign_unsign.c converted to inline assembly
Test verifier/bounds_mix_sign_unsign.c automatically converted to use inline assembly. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20230325025524.144043-11-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Eduard Zingerman
Alexei Starovoitov
Родитель
7605f94b34
Коммит
b14a702afd
|
|
@ -7,6 +7,7 @@
|
|||
#include "verifier_array_access.skel.h"
|
||||
#include "verifier_basic_stack.skel.h"
|
||||
#include "verifier_bounds_deduction.skel.h"
|
||||
#include "verifier_bounds_mix_sign_unsign.skel.h"
|
||||
|
||||
__maybe_unused
|
||||
static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
|
||||
|
|
@ -36,3 +37,4 @@ void test_verifier_and(void) { RUN(verifier_and); }
|
|||
void test_verifier_array_access(void) { RUN(verifier_array_access); }
|
||||
void test_verifier_basic_stack(void) { RUN(verifier_basic_stack); }
|
||||
void test_verifier_bounds_deduction(void) { RUN(verifier_bounds_deduction); }
|
||||
void test_verifier_bounds_mix_sign_unsign(void) { RUN(verifier_bounds_mix_sign_unsign); }
|
||||
|
|
|
|||
|
|
@ -0,0 +1,554 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/* Converted from tools/testing/selftests/bpf/verifier/bounds_mix_sign_unsign.c */
|
||||
|
||||
#include <linux/bpf.h>
|
||||
#include <bpf/bpf_helpers.h>
|
||||
#include "bpf_misc.h"
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_HASH);
|
||||
__uint(max_entries, 1);
|
||||
__type(key, long long);
|
||||
__type(value, long long);
|
||||
} map_hash_8b SEC(".maps");
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, positive bounds")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_positive_bounds(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = 2; \
|
||||
if r2 >= r1 goto l0_%=; \
|
||||
if r1 s> 4 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void checks_mixing_signed_and_unsigned(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -1; \
|
||||
if r1 > r2 goto l0_%=; \
|
||||
if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 2")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_2(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -1; \
|
||||
if r1 > r2 goto l0_%=; \
|
||||
r8 = 0; \
|
||||
r8 += r1; \
|
||||
if r8 s> 1 goto l0_%=; \
|
||||
r0 += r8; \
|
||||
r0 = 0; \
|
||||
*(u8*)(r8 + 0) = r0; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 3")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_3(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -1; \
|
||||
if r1 > r2 goto l0_%=; \
|
||||
r8 = r1; \
|
||||
if r8 s> 1 goto l0_%=; \
|
||||
r0 += r8; \
|
||||
r0 = 0; \
|
||||
*(u8*)(r8 + 0) = r0; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 4")
|
||||
__success __success_unpriv __retval(0)
|
||||
__naked void signed_and_unsigned_variant_4(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = 1; \
|
||||
r1 &= r2; \
|
||||
if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 5")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_5(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -1; \
|
||||
if r1 > r2 goto l0_%=; \
|
||||
if r1 s> 1 goto l0_%=; \
|
||||
r0 += 4; \
|
||||
r0 -= r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
r0 = 0; \
|
||||
l0_%=: exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 6")
|
||||
__failure __msg("R4 min value is negative, either use unsigned")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_6(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
r9 = r1; \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = r9; \
|
||||
r2 = 0; \
|
||||
r3 = r10; \
|
||||
r3 += -512; \
|
||||
r4 = *(u64*)(r10 - 16); \
|
||||
r6 = -1; \
|
||||
if r4 > r6 goto l0_%=; \
|
||||
if r4 s> 1 goto l0_%=; \
|
||||
r4 += 1; \
|
||||
r5 = 0; \
|
||||
r6 = 0; \
|
||||
*(u16*)(r10 - 512) = r6; \
|
||||
call %[bpf_skb_load_bytes]; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_skb_load_bytes)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 7")
|
||||
__success __success_unpriv __retval(0)
|
||||
__naked void signed_and_unsigned_variant_7(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = %[__imm_0]; \
|
||||
if r1 > r2 goto l0_%=; \
|
||||
if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b),
|
||||
__imm_const(__imm_0, 1024 * 1024 * 1024)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 8")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_8(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -1; \
|
||||
if r2 > r1 goto l1_%=; \
|
||||
r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 9")
|
||||
__success __success_unpriv __retval(0)
|
||||
__naked void signed_and_unsigned_variant_9(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -9223372036854775808ULL ll; \
|
||||
if r2 > r1 goto l1_%=; \
|
||||
r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 10")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_10(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = 0; \
|
||||
if r2 > r1 goto l1_%=; \
|
||||
r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 11")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_11(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -1; \
|
||||
if r2 >= r1 goto l1_%=; \
|
||||
/* Dead branch. */ \
|
||||
r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 12")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_12(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -6; \
|
||||
if r2 >= r1 goto l1_%=; \
|
||||
r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: if r1 s> 1 goto l0_%=; \
|
||||
r0 += r1; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 13")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_13(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = 2; \
|
||||
if r2 >= r1 goto l0_%=; \
|
||||
r7 = 1; \
|
||||
if r7 s> 0 goto l1_%=; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: r7 += r1; \
|
||||
if r7 s> 4 goto l2_%=; \
|
||||
r0 += r7; \
|
||||
r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l2_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 14")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_14(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
r9 = *(u32*)(r1 + %[__sk_buff_mark]); \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -1; \
|
||||
r8 = 2; \
|
||||
if r9 == 42 goto l1_%=; \
|
||||
if r8 s> r1 goto l2_%=; \
|
||||
l3_%=: if r1 s> 1 goto l2_%=; \
|
||||
r0 += r1; \
|
||||
l0_%=: r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
l2_%=: r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: if r1 > r2 goto l2_%=; \
|
||||
goto l3_%=; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b),
|
||||
__imm_const(__sk_buff_mark, offsetof(struct __sk_buff, mark))
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("socket")
|
||||
__description("bounds checks mixing signed and unsigned, variant 15")
|
||||
__failure __msg("unbounded min value")
|
||||
__failure_unpriv
|
||||
__naked void signed_and_unsigned_variant_15(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
call %[bpf_ktime_get_ns]; \
|
||||
*(u64*)(r10 - 16) = r0; \
|
||||
r1 = 0; \
|
||||
*(u64*)(r10 - 8) = r1; \
|
||||
r2 = r10; \
|
||||
r2 += -8; \
|
||||
r1 = %[map_hash_8b] ll; \
|
||||
call %[bpf_map_lookup_elem]; \
|
||||
if r0 == 0 goto l0_%=; \
|
||||
r1 = *(u64*)(r10 - 16); \
|
||||
r2 = -6; \
|
||||
if r2 >= r1 goto l1_%=; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
l1_%=: r0 += r1; \
|
||||
if r0 > 1 goto l2_%=; \
|
||||
r0 = 0; \
|
||||
exit; \
|
||||
l2_%=: r1 = 0; \
|
||||
*(u8*)(r0 + 0) = r1; \
|
||||
r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_ktime_get_ns),
|
||||
__imm(bpf_map_lookup_elem),
|
||||
__imm_addr(map_hash_8b)
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
char _license[] SEC("license") = "GPL";
|
||||
|
|
@ -1,411 +0,0 @@
|
|||
{
|
||||
"bounds checks mixing signed and unsigned, positive bounds",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 6),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 2),
|
||||
BPF_JMP_REG(BPF_JGE, BPF_REG_2, BPF_REG_1, 3),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 4, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 6),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_2, 3),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 2",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 8),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_2, 5),
|
||||
BPF_MOV64_IMM(BPF_REG_8, 0),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_8, BPF_REG_1),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_8, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_8),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_8, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 3",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 7),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_2, 4),
|
||||
BPF_MOV64_REG(BPF_REG_8, BPF_REG_1),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_8, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_8),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_8, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 4",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 6),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 1),
|
||||
BPF_ALU64_REG(BPF_AND, BPF_REG_1, BPF_REG_2),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.result = ACCEPT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 5",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 8),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_2, 5),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 4),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 4),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 6",
|
||||
.insns = {
|
||||
BPF_MOV64_REG(BPF_REG_9, BPF_REG_1),
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_9),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||||
BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -512),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_6, -1),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_6, 5),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_4, 1, 4),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 1),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_ST_MEM(BPF_H, BPF_REG_10, -512, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.errstr = "R4 min value is negative, either use unsigned",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 7",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 6),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 1024 * 1024 * 1024),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_2, 3),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.result = ACCEPT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 8",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 8),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 9",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 9),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_LD_IMM64(BPF_REG_2, -9223372036854775808ULL),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.result = ACCEPT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 10",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 8),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 11",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 8),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||||
BPF_JMP_REG(BPF_JGE, BPF_REG_2, BPF_REG_1, 2),
|
||||
/* Dead branch. */
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 12",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 8),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -6),
|
||||
BPF_JMP_REG(BPF_JGE, BPF_REG_2, BPF_REG_1, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 13",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 5),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 2),
|
||||
BPF_JMP_REG(BPF_JGE, BPF_REG_2, BPF_REG_1, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_7, 1),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_7, 0, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_7, BPF_REG_1),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_7, 4, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_7),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 14",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, mark)),
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 7),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||||
BPF_MOV64_IMM(BPF_REG_8, 2),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_9, 42, 6),
|
||||
BPF_JMP_REG(BPF_JSGT, BPF_REG_8, BPF_REG_1, 3),
|
||||
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 1, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_2, -3),
|
||||
BPF_JMP_IMM(BPF_JA, 0, 0, -7),
|
||||
},
|
||||
.fixup_map_hash_8b = { 6 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
{
|
||||
"bounds checks mixing signed and unsigned, variant 15",
|
||||
.insns = {
|
||||
BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),
|
||||
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -16),
|
||||
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, 3),
|
||||
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -16),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -6),
|
||||
BPF_JMP_REG(BPF_JGE, BPF_REG_2, BPF_REG_1, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_JMP_IMM(BPF_JGT, BPF_REG_0, 1, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
BPF_ST_MEM(BPF_B, BPF_REG_0, 0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.errstr = "unbounded min value",
|
||||
.result = REJECT,
|
||||
},
|
||||
Загрузка…
Ссылка в новой задаче