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selftests/bpf: verifier/sock converted to inline assembly 

Test verifier/sock automatically converted to use inline assembly.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230421174234.2391278-20-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Eduard Zingerman 2023-04-21 20:42:29 +03:00 committed by Alexei Starovoitov
parent 034d9ad25d
commit 426fc0e3fc
3 changed files with 982 additions and 706 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/testing/selftests/bpf/prog_tests/verifier.c
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@ -50,6 +50,7 @@
#include "verifier_ringbuf.skel.h"
#include "verifier_runtime_jit.skel.h"
#include "verifier_search_pruning.skel.h"
#include "verifier_sock.skel.h"
#include "verifier_spill_fill.skel.h"
#include "verifier_stack_ptr.skel.h"
#include "verifier_uninit.skel.h"
@ -141,6 +142,7 @@ void test_verifier_regalloc(void) { RUN(verifier_regalloc); }
void test_verifier_ringbuf(void) { RUN(verifier_ringbuf); }
void test_verifier_runtime_jit(void) { RUN(verifier_runtime_jit); }
void test_verifier_search_pruning(void) { RUN(verifier_search_pruning); }
void test_verifier_sock(void) { RUN(verifier_sock); }
void test_verifier_spill_fill(void) { RUN(verifier_spill_fill); }
void test_verifier_stack_ptr(void) { RUN(verifier_stack_ptr); }
void test_verifier_uninit(void) { RUN(verifier_uninit); }

980
tools/testing/selftests/bpf/progs/verifier_sock.c Normal file
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@ -0,0 +1,980 @@
// SPDX-License-Identifier: GPL-2.0
/* Converted from tools/testing/selftests/bpf/verifier/sock.c */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
#define offsetofend(TYPE, MEMBER) \
(offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
struct {
__uint(type, BPF_MAP_TYPE_REUSEPORT_SOCKARRAY);
__uint(max_entries, 1);
__type(key, __u32);
__type(value, __u64);
} map_reuseport_array SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_SOCKHASH);
__uint(max_entries, 1);
__type(key, int);
__type(value, int);
} map_sockhash SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_SOCKMAP);
__uint(max_entries, 1);
__type(key, int);
__type(value, int);
} map_sockmap SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_XSKMAP);
__uint(max_entries, 1);
__type(key, int);
__type(value, int);
} map_xskmap SEC(".maps");
struct val {
int cnt;
struct bpf_spin_lock l;
};
struct {
__uint(type, BPF_MAP_TYPE_SK_STORAGE);
__uint(max_entries, 0);
__type(key, int);
__type(value, struct val);
__uint(map_flags, BPF_F_NO_PREALLOC);
} sk_storage_map SEC(".maps");
SEC("cgroup/skb")
__description("skb->sk: no NULL check")
__failure __msg("invalid mem access 'sock_common_or_null'")
__failure_unpriv
__naked void skb_sk_no_null_check(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
r0 = *(u32*)(r1 + 0); \
r0 = 0; \
exit; \
" :
: __imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("cgroup/skb")
__description("skb->sk: sk->family [non fullsock field]")
__success __success_unpriv __retval(0)
__naked void sk_family_non_fullsock_field_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: r0 = *(u32*)(r1 + %[bpf_sock_family]); \
r0 = 0; \
exit; \
" :
: __imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_family, offsetof(struct bpf_sock, family))
: __clobber_all);
}
SEC("cgroup/skb")
__description("skb->sk: sk->type [fullsock field]")
__failure __msg("invalid sock_common access")
__failure_unpriv
__naked void sk_sk_type_fullsock_field_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: r0 = *(u32*)(r1 + %[bpf_sock_type]); \
r0 = 0; \
exit; \
" :
: __imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_type, offsetof(struct bpf_sock, type))
: __clobber_all);
}
SEC("cgroup/skb")
__description("bpf_sk_fullsock(skb->sk): no !skb->sk check")
__failure __msg("type=sock_common_or_null expected=sock_common")
__failure_unpriv
__naked void sk_no_skb_sk_check_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
call %[bpf_sk_fullsock]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): no NULL check on ret")
__failure __msg("invalid mem access 'sock_or_null'")
__failure_unpriv
__naked void no_null_check_on_ret_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
r0 = *(u32*)(r0 + %[bpf_sock_type]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_type, offsetof(struct bpf_sock, type))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->type [fullsock field]")
__success __success_unpriv __retval(0)
__naked void sk_sk_type_fullsock_field_2(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u32*)(r0 + %[bpf_sock_type]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_type, offsetof(struct bpf_sock, type))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->family [non fullsock field]")
__success __success_unpriv __retval(0)
__naked void sk_family_non_fullsock_field_2(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
exit; \
l1_%=: r0 = *(u32*)(r0 + %[bpf_sock_family]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_family, offsetof(struct bpf_sock, family))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->state [narrow load]")
__success __success_unpriv __retval(0)
__naked void sk_sk_state_narrow_load(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u8*)(r0 + %[bpf_sock_state]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_state, offsetof(struct bpf_sock, state))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->dst_port [word load] (backward compatibility)")
__success __success_unpriv __retval(0)
__naked void port_word_load_backward_compatibility(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u32*)(r0 + %[bpf_sock_dst_port]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_dst_port, offsetof(struct bpf_sock, dst_port))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->dst_port [half load]")
__success __success_unpriv __retval(0)
__naked void sk_dst_port_half_load(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u16*)(r0 + %[bpf_sock_dst_port]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_dst_port, offsetof(struct bpf_sock, dst_port))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->dst_port [half load] (invalid)")
__failure __msg("invalid sock access")
__failure_unpriv
__naked void dst_port_half_load_invalid_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u16*)(r0 + %[__imm_0]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__imm_0, offsetof(struct bpf_sock, dst_port) + 2),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->dst_port [byte load]")
__success __success_unpriv __retval(0)
__naked void sk_dst_port_byte_load(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r2 = *(u8*)(r0 + %[bpf_sock_dst_port]); \
r2 = *(u8*)(r0 + %[__imm_0]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__imm_0, offsetof(struct bpf_sock, dst_port) + 1),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_dst_port, offsetof(struct bpf_sock, dst_port))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->dst_port [byte load] (invalid)")
__failure __msg("invalid sock access")
__failure_unpriv
__naked void dst_port_byte_load_invalid(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u8*)(r0 + %[__imm_0]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__imm_0, offsetof(struct bpf_sock, dst_port) + 2),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): past sk->dst_port [half load] (invalid)")
__failure __msg("invalid sock access")
__failure_unpriv
__naked void dst_port_half_load_invalid_2(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u16*)(r0 + %[bpf_sock_dst_port__end]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_dst_port__end, offsetofend(struct bpf_sock, dst_port))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->dst_ip6 [load 2nd byte]")
__success __success_unpriv __retval(0)
__naked void dst_ip6_load_2nd_byte(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u8*)(r0 + %[__imm_0]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__imm_0, offsetof(struct bpf_sock, dst_ip6[0]) + 1),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->type [narrow load]")
__success __success_unpriv __retval(0)
__naked void sk_sk_type_narrow_load(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u8*)(r0 + %[bpf_sock_type]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_type, offsetof(struct bpf_sock, type))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): sk->protocol [narrow load]")
__success __success_unpriv __retval(0)
__naked void sk_sk_protocol_narrow_load(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u8*)(r0 + %[bpf_sock_protocol]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_protocol, offsetof(struct bpf_sock, protocol))
: __clobber_all);
}
SEC("cgroup/skb")
__description("sk_fullsock(skb->sk): beyond last field")
__failure __msg("invalid sock access")
__failure_unpriv
__naked void skb_sk_beyond_last_field_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u32*)(r0 + %[bpf_sock_rx_queue_mapping__end]);\
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_sock_rx_queue_mapping__end, offsetofend(struct bpf_sock, rx_queue_mapping))
: __clobber_all);
}
SEC("cgroup/skb")
__description("bpf_tcp_sock(skb->sk): no !skb->sk check")
__failure __msg("type=sock_common_or_null expected=sock_common")
__failure_unpriv
__naked void sk_no_skb_sk_check_2(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
call %[bpf_tcp_sock]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("cgroup/skb")
__description("bpf_tcp_sock(skb->sk): no NULL check on ret")
__failure __msg("invalid mem access 'tcp_sock_or_null'")
__failure_unpriv
__naked void no_null_check_on_ret_2(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_tcp_sock]; \
r0 = *(u32*)(r0 + %[bpf_tcp_sock_snd_cwnd]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_tcp_sock_snd_cwnd, offsetof(struct bpf_tcp_sock, snd_cwnd))
: __clobber_all);
}
SEC("cgroup/skb")
__description("bpf_tcp_sock(skb->sk): tp->snd_cwnd")
__success __success_unpriv __retval(0)
__naked void skb_sk_tp_snd_cwnd_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_tcp_sock]; \
if r0 != 0 goto l1_%=; \
exit; \
l1_%=: r0 = *(u32*)(r0 + %[bpf_tcp_sock_snd_cwnd]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_tcp_sock_snd_cwnd, offsetof(struct bpf_tcp_sock, snd_cwnd))
: __clobber_all);
}
SEC("cgroup/skb")
__description("bpf_tcp_sock(skb->sk): tp->bytes_acked")
__success __success_unpriv __retval(0)
__naked void skb_sk_tp_bytes_acked(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_tcp_sock]; \
if r0 != 0 goto l1_%=; \
exit; \
l1_%=: r0 = *(u64*)(r0 + %[bpf_tcp_sock_bytes_acked]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_tcp_sock_bytes_acked, offsetof(struct bpf_tcp_sock, bytes_acked))
: __clobber_all);
}
SEC("cgroup/skb")
__description("bpf_tcp_sock(skb->sk): beyond last field")
__failure __msg("invalid tcp_sock access")
__failure_unpriv
__naked void skb_sk_beyond_last_field_2(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_tcp_sock]; \
if r0 != 0 goto l1_%=; \
exit; \
l1_%=: r0 = *(u64*)(r0 + %[bpf_tcp_sock_bytes_acked__end]);\
r0 = 0; \
exit; \
" :
: __imm(bpf_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_tcp_sock_bytes_acked__end, offsetofend(struct bpf_tcp_sock, bytes_acked))
: __clobber_all);
}
SEC("cgroup/skb")
__description("bpf_tcp_sock(bpf_sk_fullsock(skb->sk)): tp->snd_cwnd")
__success __success_unpriv __retval(0)
__naked void skb_sk_tp_snd_cwnd_2(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
exit; \
l1_%=: r1 = r0; \
call %[bpf_tcp_sock]; \
if r0 != 0 goto l2_%=; \
exit; \
l2_%=: r0 = *(u32*)(r0 + %[bpf_tcp_sock_snd_cwnd]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm(bpf_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk)),
__imm_const(bpf_tcp_sock_snd_cwnd, offsetof(struct bpf_tcp_sock, snd_cwnd))
: __clobber_all);
}
SEC("tc")
__description("bpf_sk_release(skb->sk)")
__failure __msg("R1 must be referenced when passed to release function")
__naked void bpf_sk_release_skb_sk(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 == 0 goto l0_%=; \
call %[bpf_sk_release]; \
l0_%=: r0 = 0; \
exit; \
" :
: __imm(bpf_sk_release),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("tc")
__description("bpf_sk_release(bpf_sk_fullsock(skb->sk))")
__failure __msg("R1 must be referenced when passed to release function")
__naked void bpf_sk_fullsock_skb_sk(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
exit; \
l1_%=: r1 = r0; \
call %[bpf_sk_release]; \
r0 = 1; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm(bpf_sk_release),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("tc")
__description("bpf_sk_release(bpf_tcp_sock(skb->sk))")
__failure __msg("R1 must be referenced when passed to release function")
__naked void bpf_tcp_sock_skb_sk(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_tcp_sock]; \
if r0 != 0 goto l1_%=; \
exit; \
l1_%=: r1 = r0; \
call %[bpf_sk_release]; \
r0 = 1; \
exit; \
" :
: __imm(bpf_sk_release),
__imm(bpf_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("tc")
__description("sk_storage_get(map, skb->sk, NULL, 0): value == NULL")
__success __retval(0)
__naked void sk_null_0_value_null(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r4 = 0; \
r3 = 0; \
r2 = r0; \
r1 = %[sk_storage_map] ll; \
call %[bpf_sk_storage_get]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm(bpf_sk_storage_get),
__imm_addr(sk_storage_map),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("tc")
__description("sk_storage_get(map, skb->sk, 1, 1): value == 1")
__failure __msg("R3 type=scalar expected=fp")
__naked void sk_1_1_value_1(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r4 = 1; \
r3 = 1; \
r2 = r0; \
r1 = %[sk_storage_map] ll; \
call %[bpf_sk_storage_get]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm(bpf_sk_storage_get),
__imm_addr(sk_storage_map),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("tc")
__description("sk_storage_get(map, skb->sk, &stack_value, 1): stack_value")
__success __retval(0)
__naked void stack_value_1_stack_value(void)
{
asm volatile (" \
r2 = 0; \
*(u64*)(r10 - 8) = r2; \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: call %[bpf_sk_fullsock]; \
if r0 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r4 = 1; \
r3 = r10; \
r3 += -8; \
r2 = r0; \
r1 = %[sk_storage_map] ll; \
call %[bpf_sk_storage_get]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_sk_fullsock),
__imm(bpf_sk_storage_get),
__imm_addr(sk_storage_map),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
SEC("tc")
__description("bpf_map_lookup_elem(smap, &key)")
__failure __msg("cannot pass map_type 24 into func bpf_map_lookup_elem")
__naked void map_lookup_elem_smap_key(void)
{
asm volatile (" \
r1 = 0; \
*(u32*)(r10 - 4) = r1; \
r2 = r10; \
r2 += -4; \
r1 = %[sk_storage_map] ll; \
call %[bpf_map_lookup_elem]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_map_lookup_elem),
__imm_addr(sk_storage_map)
: __clobber_all);
}
SEC("xdp")
__description("bpf_map_lookup_elem(xskmap, &key); xs->queue_id")
__success __retval(0)
__naked void xskmap_key_xs_queue_id(void)
{
asm volatile (" \
r1 = 0; \
*(u32*)(r10 - 8) = r1; \
r2 = r10; \
r2 += -8; \
r1 = %[map_xskmap] ll; \
call %[bpf_map_lookup_elem]; \
if r0 != 0 goto l0_%=; \
exit; \
l0_%=: r0 = *(u32*)(r0 + %[bpf_xdp_sock_queue_id]); \
r0 = 0; \
exit; \
" :
: __imm(bpf_map_lookup_elem),
__imm_addr(map_xskmap),
__imm_const(bpf_xdp_sock_queue_id, offsetof(struct bpf_xdp_sock, queue_id))
: __clobber_all);
}
SEC("sk_skb")
__description("bpf_map_lookup_elem(sockmap, &key)")
__failure __msg("Unreleased reference id=2 alloc_insn=6")
__naked void map_lookup_elem_sockmap_key(void)
{
asm volatile (" \
r1 = 0; \
*(u32*)(r10 - 4) = r1; \
r2 = r10; \
r2 += -4; \
r1 = %[map_sockmap] ll; \
call %[bpf_map_lookup_elem]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_map_lookup_elem),
__imm_addr(map_sockmap)
: __clobber_all);
}
SEC("sk_skb")
__description("bpf_map_lookup_elem(sockhash, &key)")
__failure __msg("Unreleased reference id=2 alloc_insn=6")
__naked void map_lookup_elem_sockhash_key(void)
{
asm volatile (" \
r1 = 0; \
*(u32*)(r10 - 4) = r1; \
r2 = r10; \
r2 += -4; \
r1 = %[map_sockhash] ll; \
call %[bpf_map_lookup_elem]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_map_lookup_elem),
__imm_addr(map_sockhash)
: __clobber_all);
}
SEC("sk_skb")
__description("bpf_map_lookup_elem(sockmap, &key); sk->type [fullsock field]; bpf_sk_release(sk)")
__success
__naked void field_bpf_sk_release_sk_1(void)
{
asm volatile (" \
r1 = 0; \
*(u32*)(r10 - 4) = r1; \
r2 = r10; \
r2 += -4; \
r1 = %[map_sockmap] ll; \
call %[bpf_map_lookup_elem]; \
if r0 != 0 goto l0_%=; \
exit; \
l0_%=: r1 = r0; \
r0 = *(u32*)(r0 + %[bpf_sock_type]); \
call %[bpf_sk_release]; \
exit; \
" :
: __imm(bpf_map_lookup_elem),
__imm(bpf_sk_release),
__imm_addr(map_sockmap),
__imm_const(bpf_sock_type, offsetof(struct bpf_sock, type))
: __clobber_all);
}
SEC("sk_skb")
__description("bpf_map_lookup_elem(sockhash, &key); sk->type [fullsock field]; bpf_sk_release(sk)")
__success
__naked void field_bpf_sk_release_sk_2(void)
{
asm volatile (" \
r1 = 0; \
*(u32*)(r10 - 4) = r1; \
r2 = r10; \
r2 += -4; \
r1 = %[map_sockhash] ll; \
call %[bpf_map_lookup_elem]; \
if r0 != 0 goto l0_%=; \
exit; \
l0_%=: r1 = r0; \
r0 = *(u32*)(r0 + %[bpf_sock_type]); \
call %[bpf_sk_release]; \
exit; \
" :
: __imm(bpf_map_lookup_elem),
__imm(bpf_sk_release),
__imm_addr(map_sockhash),
__imm_const(bpf_sock_type, offsetof(struct bpf_sock, type))
: __clobber_all);
}
SEC("sk_reuseport")
__description("bpf_sk_select_reuseport(ctx, reuseport_array, &key, flags)")
__success
__naked void ctx_reuseport_array_key_flags(void)
{
asm volatile (" \
r4 = 0; \
r2 = 0; \
*(u32*)(r10 - 4) = r2; \
r3 = r10; \
r3 += -4; \
r2 = %[map_reuseport_array] ll; \
call %[bpf_sk_select_reuseport]; \
exit; \
" :
: __imm(bpf_sk_select_reuseport),
__imm_addr(map_reuseport_array)
: __clobber_all);
}
SEC("sk_reuseport")
__description("bpf_sk_select_reuseport(ctx, sockmap, &key, flags)")
__success
__naked void reuseport_ctx_sockmap_key_flags(void)
{
asm volatile (" \
r4 = 0; \
r2 = 0; \
*(u32*)(r10 - 4) = r2; \
r3 = r10; \
r3 += -4; \
r2 = %[map_sockmap] ll; \
call %[bpf_sk_select_reuseport]; \
exit; \
" :
: __imm(bpf_sk_select_reuseport),
__imm_addr(map_sockmap)
: __clobber_all);
}
SEC("sk_reuseport")
__description("bpf_sk_select_reuseport(ctx, sockhash, &key, flags)")
__success
__naked void reuseport_ctx_sockhash_key_flags(void)
{
asm volatile (" \
r4 = 0; \
r2 = 0; \
*(u32*)(r10 - 4) = r2; \
r3 = r10; \
r3 += -4; \
r2 = %[map_sockmap] ll; \
call %[bpf_sk_select_reuseport]; \
exit; \
" :
: __imm(bpf_sk_select_reuseport),
__imm_addr(map_sockmap)
: __clobber_all);
}
SEC("tc")
__description("mark null check on return value of bpf_skc_to helpers")
__failure __msg("invalid mem access")
__naked void of_bpf_skc_to_helpers(void)
{
asm volatile (" \
r1 = *(u64*)(r1 + %[__sk_buff_sk]); \
if r1 != 0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: r6 = r1; \
call %[bpf_skc_to_tcp_sock]; \
r7 = r0; \
r1 = r6; \
call %[bpf_skc_to_tcp_request_sock]; \
r8 = r0; \
if r8 != 0 goto l1_%=; \
r0 = 0; \
exit; \
l1_%=: r0 = *(u8*)(r7 + 0); \
exit; \
" :
: __imm(bpf_skc_to_tcp_request_sock),
__imm(bpf_skc_to_tcp_sock),
__imm_const(__sk_buff_sk, offsetof(struct __sk_buff, sk))
: __clobber_all);
}
char _license[] SEC("license") = "GPL";

706
tools/testing/selftests/bpf/verifier/sock.c
View File

@ -1,706 +0,0 @@
{
"skb->sk: no NULL check",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid mem access 'sock_common_or_null'",
},
{
"skb->sk: sk->family [non fullsock field]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, offsetof(struct bpf_sock, family)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"skb->sk: sk->type [fullsock field]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, offsetof(struct bpf_sock, type)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid sock_common access",
},
{
"bpf_sk_fullsock(skb->sk): no !skb->sk check",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "type=sock_common_or_null expected=sock_common",
},
{
"sk_fullsock(skb->sk): no NULL check on ret",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, type)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid mem access 'sock_or_null'",
},
{
"sk_fullsock(skb->sk): sk->type [fullsock field]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, type)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->family [non fullsock field]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, family)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->state [narrow load]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, state)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->dst_port [word load] (backward compatibility)",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, dst_port)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->dst_port [half load]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, dst_port)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->dst_port [half load] (invalid)",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, dst_port) + 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid sock access",
},
{
"sk_fullsock(skb->sk): sk->dst_port [byte load]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_B, BPF_REG_2, BPF_REG_0, offsetof(struct bpf_sock, dst_port)),
BPF_LDX_MEM(BPF_B, BPF_REG_2, BPF_REG_0, offsetof(struct bpf_sock, dst_port) + 1),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->dst_port [byte load] (invalid)",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, dst_port) + 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid sock access",
},
{
"sk_fullsock(skb->sk): past sk->dst_port [half load] (invalid)",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_0, offsetofend(struct bpf_sock, dst_port)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid sock access",
},
{
"sk_fullsock(skb->sk): sk->dst_ip6 [load 2nd byte]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, dst_ip6[0]) + 1),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->type [narrow load]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, type)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): sk->protocol [narrow load]",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, protocol)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"sk_fullsock(skb->sk): beyond last field",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetofend(struct bpf_sock, rx_queue_mapping)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid sock access",
},
{
"bpf_tcp_sock(skb->sk): no !skb->sk check",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_EMIT_CALL(BPF_FUNC_tcp_sock),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "type=sock_common_or_null expected=sock_common",
},
{
"bpf_tcp_sock(skb->sk): no NULL check on ret",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_tcp_sock),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_tcp_sock, snd_cwnd)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid mem access 'tcp_sock_or_null'",
},
{
"bpf_tcp_sock(skb->sk): tp->snd_cwnd",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_tcp_sock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_tcp_sock, snd_cwnd)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"bpf_tcp_sock(skb->sk): tp->bytes_acked",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_tcp_sock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_tcp_sock, bytes_acked)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"bpf_tcp_sock(skb->sk): beyond last field",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_tcp_sock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, offsetofend(struct bpf_tcp_sock, bytes_acked)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = REJECT,
.errstr = "invalid tcp_sock access",
},
{
"bpf_tcp_sock(bpf_sk_fullsock(skb->sk)): tp->snd_cwnd",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
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, 1),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_tcp_sock, snd_cwnd)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
.result = ACCEPT,
},
{
"bpf_sk_release(skb->sk)",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1),
BPF_EMIT_CALL(BPF_FUNC_sk_release),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "R1 must be referenced when passed to release function",
},
{
"bpf_sk_release(bpf_sk_fullsock(skb->sk))",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
BPF_EMIT_CALL(BPF_FUNC_sk_release),
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "R1 must be referenced when passed to release function",
},
{
"bpf_sk_release(bpf_tcp_sock(skb->sk))",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_tcp_sock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
BPF_EMIT_CALL(BPF_FUNC_sk_release),
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "R1 must be referenced when passed to release function",
},
{
"sk_storage_get(map, skb->sk, NULL, 0): value == NULL",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_MOV64_IMM(BPF_REG_4, 0),
BPF_MOV64_IMM(BPF_REG_3, 0),
BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
BPF_LD_MAP_FD(BPF_REG_1, 0),
BPF_EMIT_CALL(BPF_FUNC_sk_storage_get),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_sk_storage_map = { 11 },
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = ACCEPT,
},
{
"sk_storage_get(map, skb->sk, 1, 1): value == 1",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_MOV64_IMM(BPF_REG_4, 1),
BPF_MOV64_IMM(BPF_REG_3, 1),
BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
BPF_LD_MAP_FD(BPF_REG_1, 0),
BPF_EMIT_CALL(BPF_FUNC_sk_storage_get),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_sk_storage_map = { 11 },
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "R3 type=scalar expected=fp",
},
{
"sk_storage_get(map, skb->sk, &stack_value, 1): stack_value",
.insns = {
BPF_MOV64_IMM(BPF_REG_2, 0),
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_2, -8),
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_EMIT_CALL(BPF_FUNC_sk_fullsock),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_MOV64_IMM(BPF_REG_4, 1),
BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -8),
BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
BPF_LD_MAP_FD(BPF_REG_1, 0),
BPF_EMIT_CALL(BPF_FUNC_sk_storage_get),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_sk_storage_map = { 14 },
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = ACCEPT,
},
{
"bpf_map_lookup_elem(smap, &key)",
.insns = {
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
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_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_sk_storage_map = { 3 },
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "cannot pass map_type 24 into func bpf_map_lookup_elem",
},
{
"bpf_map_lookup_elem(xskmap, &key); xs->queue_id",
.insns = {
BPF_ST_MEM(BPF_W, 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_EMIT_CALL(BPF_FUNC_map_lookup_elem),
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
BPF_EXIT_INSN(),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_xdp_sock, queue_id)),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_map_xskmap = { 3 },
.prog_type = BPF_PROG_TYPE_XDP,
.result = ACCEPT,
},
{
"bpf_map_lookup_elem(sockmap, &key)",
.insns = {
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
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_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_map_sockmap = { 3 },
.prog_type = BPF_PROG_TYPE_SK_SKB,
.result = REJECT,
.errstr = "Unreleased reference id=2 alloc_insn=5",
},
{
"bpf_map_lookup_elem(sockhash, &key)",
.insns = {
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
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_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_map_sockhash = { 3 },
.prog_type = BPF_PROG_TYPE_SK_SKB,
.result = REJECT,
.errstr = "Unreleased reference id=2 alloc_insn=5",
},
{
"bpf_map_lookup_elem(sockmap, &key); sk->type [fullsock field]; bpf_sk_release(sk)",
.insns = {
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
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_1, BPF_REG_0),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, type)),
BPF_EMIT_CALL(BPF_FUNC_sk_release),
BPF_EXIT_INSN(),
},
.fixup_map_sockmap = { 3 },
.prog_type = BPF_PROG_TYPE_SK_SKB,
.result = ACCEPT,
},
{
"bpf_map_lookup_elem(sockhash, &key); sk->type [fullsock field]; bpf_sk_release(sk)",
.insns = {
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
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_1, BPF_REG_0),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_sock, type)),
BPF_EMIT_CALL(BPF_FUNC_sk_release),
BPF_EXIT_INSN(),
},
.fixup_map_sockhash = { 3 },
.prog_type = BPF_PROG_TYPE_SK_SKB,
.result = ACCEPT,
},
{
"bpf_sk_select_reuseport(ctx, reuseport_array, &key, flags)",
.insns = {
BPF_MOV64_IMM(BPF_REG_4, 0),
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -4),
BPF_LD_MAP_FD(BPF_REG_2, 0),
BPF_EMIT_CALL(BPF_FUNC_sk_select_reuseport),
BPF_EXIT_INSN(),
},
.fixup_map_reuseport_array = { 4 },
.prog_type = BPF_PROG_TYPE_SK_REUSEPORT,
.result = ACCEPT,
},
{
"bpf_sk_select_reuseport(ctx, sockmap, &key, flags)",
.insns = {
BPF_MOV64_IMM(BPF_REG_4, 0),
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -4),
BPF_LD_MAP_FD(BPF_REG_2, 0),
BPF_EMIT_CALL(BPF_FUNC_sk_select_reuseport),
BPF_EXIT_INSN(),
},
.fixup_map_sockmap = { 4 },
.prog_type = BPF_PROG_TYPE_SK_REUSEPORT,
.result = ACCEPT,
},
{
"bpf_sk_select_reuseport(ctx, sockhash, &key, flags)",
.insns = {
BPF_MOV64_IMM(BPF_REG_4, 0),
BPF_ST_MEM(BPF_W, BPF_REG_10, -4, 0),
BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, -4),
BPF_LD_MAP_FD(BPF_REG_2, 0),
BPF_EMIT_CALL(BPF_FUNC_sk_select_reuseport),
BPF_EXIT_INSN(),
},
.fixup_map_sockmap = { 4 },
.prog_type = BPF_PROG_TYPE_SK_REUSEPORT,
.result = ACCEPT,
},
{
"mark null check on return value of bpf_skc_to helpers",
.insns = {
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, offsetof(struct __sk_buff, sk)),
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
BPF_EMIT_CALL(BPF_FUNC_skc_to_tcp_sock),
BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
BPF_EMIT_CALL(BPF_FUNC_skc_to_tcp_request_sock),
BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
BPF_JMP_IMM(BPF_JNE, BPF_REG_8, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
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",
},