#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 = -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 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";
