1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2017 Facebook
5 #include <linux/btf_ids.h>
6 #include <linux/slab.h>
7 #include <linux/vmalloc.h>
8 #include <linux/etherdevice.h>
9 #include <linux/filter.h>
10 #include <linux/rcupdate_trace.h>
11 #include <linux/sched/signal.h>
12 #include <net/bpf_sk_storage.h>
15 #include <net/net_namespace.h>
16 #include <linux/error-injection.h>
17 #include <linux/smp.h>
18 #include <linux/sock_diag.h>
20 #define CREATE_TRACE_POINTS
21 #include <trace/events/bpf_test_run.h>
23 struct bpf_test_timer {
24 enum { NO_PREEMPT, NO_MIGRATE } mode;
26 u64 time_start, time_spent;
29 static void bpf_test_timer_enter(struct bpf_test_timer *t)
33 if (t->mode == NO_PREEMPT)
38 t->time_start = ktime_get_ns();
41 static void bpf_test_timer_leave(struct bpf_test_timer *t)
46 if (t->mode == NO_PREEMPT)
53 static bool bpf_test_timer_continue(struct bpf_test_timer *t, u32 repeat, int *err, u32 *duration)
59 t->time_spent += ktime_get_ns() - t->time_start;
60 do_div(t->time_spent, t->i);
61 *duration = t->time_spent > U32_MAX ? U32_MAX : (u32)t->time_spent;
66 if (signal_pending(current)) {
67 /* During iteration: we've been cancelled, abort. */
73 /* During iteration: we need to reschedule between runs. */
74 t->time_spent += ktime_get_ns() - t->time_start;
75 bpf_test_timer_leave(t);
77 bpf_test_timer_enter(t);
80 /* Do another round. */
88 static int bpf_test_run(struct bpf_prog *prog, void *ctx, u32 repeat,
89 u32 *retval, u32 *time, bool xdp)
91 struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE] = { NULL };
92 struct bpf_test_timer t = { NO_MIGRATE };
93 enum bpf_cgroup_storage_type stype;
96 for_each_cgroup_storage_type(stype) {
97 storage[stype] = bpf_cgroup_storage_alloc(prog, stype);
98 if (IS_ERR(storage[stype])) {
99 storage[stype] = NULL;
100 for_each_cgroup_storage_type(stype)
101 bpf_cgroup_storage_free(storage[stype]);
109 bpf_test_timer_enter(&t);
111 ret = bpf_cgroup_storage_set(storage);
116 *retval = bpf_prog_run_xdp(prog, ctx);
118 *retval = BPF_PROG_RUN(prog, ctx);
120 bpf_cgroup_storage_unset();
121 } while (bpf_test_timer_continue(&t, repeat, &ret, time));
122 bpf_test_timer_leave(&t);
124 for_each_cgroup_storage_type(stype)
125 bpf_cgroup_storage_free(storage[stype]);
130 static int bpf_test_finish(const union bpf_attr *kattr,
131 union bpf_attr __user *uattr, const void *data,
132 u32 size, u32 retval, u32 duration)
134 void __user *data_out = u64_to_user_ptr(kattr->test.data_out);
136 u32 copy_size = size;
138 /* Clamp copy if the user has provided a size hint, but copy the full
139 * buffer if not to retain old behaviour.
141 if (kattr->test.data_size_out &&
142 copy_size > kattr->test.data_size_out) {
143 copy_size = kattr->test.data_size_out;
147 if (data_out && copy_to_user(data_out, data, copy_size))
149 if (copy_to_user(&uattr->test.data_size_out, &size, sizeof(size)))
151 if (copy_to_user(&uattr->test.retval, &retval, sizeof(retval)))
153 if (copy_to_user(&uattr->test.duration, &duration, sizeof(duration)))
158 trace_bpf_test_finish(&err);
162 /* Integer types of various sizes and pointer combinations cover variety of
163 * architecture dependent calling conventions. 7+ can be supported in the
167 __diag_ignore(GCC, 8, "-Wmissing-prototypes",
168 "Global functions as their definitions will be in vmlinux BTF");
169 int noinline bpf_fentry_test1(int a)
174 int noinline bpf_fentry_test2(int a, u64 b)
179 int noinline bpf_fentry_test3(char a, int b, u64 c)
184 int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
186 return (long)a + b + c + d;
189 int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
191 return a + (long)b + c + d + e;
194 int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f)
196 return a + (long)b + c + d + (long)e + f;
199 struct bpf_fentry_test_t {
200 struct bpf_fentry_test_t *a;
203 int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg)
208 int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg)
213 int noinline bpf_modify_return_test(int a, int *b)
219 u64 noinline bpf_kfunc_call_test1(struct sock *sk, u32 a, u64 b, u32 c, u64 d)
221 return a + b + c + d;
224 int noinline bpf_kfunc_call_test2(struct sock *sk, u32 a, u32 b)
229 struct sock * noinline bpf_kfunc_call_test3(struct sock *sk)
236 ALLOW_ERROR_INJECTION(bpf_modify_return_test, ERRNO);
238 BTF_SET_START(test_sk_kfunc_ids)
239 BTF_ID(func, bpf_kfunc_call_test1)
240 BTF_ID(func, bpf_kfunc_call_test2)
241 BTF_ID(func, bpf_kfunc_call_test3)
242 BTF_SET_END(test_sk_kfunc_ids)
244 bool bpf_prog_test_check_kfunc_call(u32 kfunc_id)
246 return btf_id_set_contains(&test_sk_kfunc_ids, kfunc_id);
249 static void *bpf_test_init(const union bpf_attr *kattr, u32 size,
250 u32 headroom, u32 tailroom)
252 void __user *data_in = u64_to_user_ptr(kattr->test.data_in);
253 u32 user_size = kattr->test.data_size_in;
256 if (size < ETH_HLEN || size > PAGE_SIZE - headroom - tailroom)
257 return ERR_PTR(-EINVAL);
259 if (user_size > size)
260 return ERR_PTR(-EMSGSIZE);
262 data = kzalloc(size + headroom + tailroom, GFP_USER);
264 return ERR_PTR(-ENOMEM);
266 if (copy_from_user(data + headroom, data_in, user_size)) {
268 return ERR_PTR(-EFAULT);
274 int bpf_prog_test_run_tracing(struct bpf_prog *prog,
275 const union bpf_attr *kattr,
276 union bpf_attr __user *uattr)
278 struct bpf_fentry_test_t arg = {};
279 u16 side_effect = 0, ret = 0;
280 int b = 2, err = -EFAULT;
283 if (kattr->test.flags || kattr->test.cpu)
286 switch (prog->expected_attach_type) {
287 case BPF_TRACE_FENTRY:
288 case BPF_TRACE_FEXIT:
289 if (bpf_fentry_test1(1) != 2 ||
290 bpf_fentry_test2(2, 3) != 5 ||
291 bpf_fentry_test3(4, 5, 6) != 15 ||
292 bpf_fentry_test4((void *)7, 8, 9, 10) != 34 ||
293 bpf_fentry_test5(11, (void *)12, 13, 14, 15) != 65 ||
294 bpf_fentry_test6(16, (void *)17, 18, 19, (void *)20, 21) != 111 ||
295 bpf_fentry_test7((struct bpf_fentry_test_t *)0) != 0 ||
296 bpf_fentry_test8(&arg) != 0)
299 case BPF_MODIFY_RETURN:
300 ret = bpf_modify_return_test(1, &b);
308 retval = ((u32)side_effect << 16) | ret;
309 if (copy_to_user(&uattr->test.retval, &retval, sizeof(retval)))
314 trace_bpf_test_finish(&err);
318 struct bpf_raw_tp_test_run_info {
319 struct bpf_prog *prog;
325 __bpf_prog_test_run_raw_tp(void *data)
327 struct bpf_raw_tp_test_run_info *info = data;
330 info->retval = BPF_PROG_RUN(info->prog, info->ctx);
334 int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
335 const union bpf_attr *kattr,
336 union bpf_attr __user *uattr)
338 void __user *ctx_in = u64_to_user_ptr(kattr->test.ctx_in);
339 __u32 ctx_size_in = kattr->test.ctx_size_in;
340 struct bpf_raw_tp_test_run_info info;
341 int cpu = kattr->test.cpu, err = 0;
344 /* doesn't support data_in/out, ctx_out, duration, or repeat */
345 if (kattr->test.data_in || kattr->test.data_out ||
346 kattr->test.ctx_out || kattr->test.duration ||
350 if (ctx_size_in < prog->aux->max_ctx_offset ||
351 ctx_size_in > MAX_BPF_FUNC_ARGS * sizeof(u64))
354 if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 && cpu != 0)
358 info.ctx = kzalloc(ctx_size_in, GFP_USER);
361 if (copy_from_user(info.ctx, ctx_in, ctx_size_in)) {
371 current_cpu = get_cpu();
372 if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 ||
373 cpu == current_cpu) {
374 __bpf_prog_test_run_raw_tp(&info);
375 } else if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
376 /* smp_call_function_single() also checks cpu_online()
377 * after csd_lock(). However, since cpu is from user
378 * space, let's do an extra quick check to filter out
379 * invalid value before smp_call_function_single().
383 err = smp_call_function_single(cpu, __bpf_prog_test_run_raw_tp,
389 copy_to_user(&uattr->test.retval, &info.retval, sizeof(u32)))
397 static void *bpf_ctx_init(const union bpf_attr *kattr, u32 max_size)
399 void __user *data_in = u64_to_user_ptr(kattr->test.ctx_in);
400 void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
401 u32 size = kattr->test.ctx_size_in;
405 if (!data_in && !data_out)
408 data = kzalloc(max_size, GFP_USER);
410 return ERR_PTR(-ENOMEM);
413 err = bpf_check_uarg_tail_zero(USER_BPFPTR(data_in), max_size, size);
419 size = min_t(u32, max_size, size);
420 if (copy_from_user(data, data_in, size)) {
422 return ERR_PTR(-EFAULT);
428 static int bpf_ctx_finish(const union bpf_attr *kattr,
429 union bpf_attr __user *uattr, const void *data,
432 void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
434 u32 copy_size = size;
436 if (!data || !data_out)
439 if (copy_size > kattr->test.ctx_size_out) {
440 copy_size = kattr->test.ctx_size_out;
444 if (copy_to_user(data_out, data, copy_size))
446 if (copy_to_user(&uattr->test.ctx_size_out, &size, sizeof(size)))
455 * range_is_zero - test whether buffer is initialized
456 * @buf: buffer to check
457 * @from: check from this position
458 * @to: check up until (excluding) this position
460 * This function returns true if the there is a non-zero byte
461 * in the buf in the range [from,to).
463 static inline bool range_is_zero(void *buf, size_t from, size_t to)
465 return !memchr_inv((u8 *)buf + from, 0, to - from);
468 static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb)
470 struct qdisc_skb_cb *cb = (struct qdisc_skb_cb *)skb->cb;
475 /* make sure the fields we don't use are zeroed */
476 if (!range_is_zero(__skb, 0, offsetof(struct __sk_buff, mark)))
479 /* mark is allowed */
481 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, mark),
482 offsetof(struct __sk_buff, priority)))
485 /* priority is allowed */
487 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, priority),
488 offsetof(struct __sk_buff, ifindex)))
491 /* ifindex is allowed */
493 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, ifindex),
494 offsetof(struct __sk_buff, cb)))
499 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, cb),
500 offsetof(struct __sk_buff, tstamp)))
503 /* tstamp is allowed */
504 /* wire_len is allowed */
505 /* gso_segs is allowed */
507 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_segs),
508 offsetof(struct __sk_buff, gso_size)))
511 /* gso_size is allowed */
513 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_size),
514 sizeof(struct __sk_buff)))
517 skb->mark = __skb->mark;
518 skb->priority = __skb->priority;
519 skb->tstamp = __skb->tstamp;
520 memcpy(&cb->data, __skb->cb, QDISC_CB_PRIV_LEN);
522 if (__skb->wire_len == 0) {
523 cb->pkt_len = skb->len;
525 if (__skb->wire_len < skb->len ||
526 __skb->wire_len > GSO_MAX_SIZE)
528 cb->pkt_len = __skb->wire_len;
531 if (__skb->gso_segs > GSO_MAX_SEGS)
533 skb_shinfo(skb)->gso_segs = __skb->gso_segs;
534 skb_shinfo(skb)->gso_size = __skb->gso_size;
539 static void convert_skb_to___skb(struct sk_buff *skb, struct __sk_buff *__skb)
541 struct qdisc_skb_cb *cb = (struct qdisc_skb_cb *)skb->cb;
546 __skb->mark = skb->mark;
547 __skb->priority = skb->priority;
548 __skb->ifindex = skb->dev->ifindex;
549 __skb->tstamp = skb->tstamp;
550 memcpy(__skb->cb, &cb->data, QDISC_CB_PRIV_LEN);
551 __skb->wire_len = cb->pkt_len;
552 __skb->gso_segs = skb_shinfo(skb)->gso_segs;
555 int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
556 union bpf_attr __user *uattr)
558 bool is_l2 = false, is_direct_pkt_access = false;
559 struct net *net = current->nsproxy->net_ns;
560 struct net_device *dev = net->loopback_dev;
561 u32 size = kattr->test.data_size_in;
562 u32 repeat = kattr->test.repeat;
563 struct __sk_buff *ctx = NULL;
564 u32 retval, duration;
565 int hh_len = ETH_HLEN;
571 if (kattr->test.flags || kattr->test.cpu)
574 data = bpf_test_init(kattr, size, NET_SKB_PAD + NET_IP_ALIGN,
575 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
577 return PTR_ERR(data);
579 ctx = bpf_ctx_init(kattr, sizeof(struct __sk_buff));
585 switch (prog->type) {
586 case BPF_PROG_TYPE_SCHED_CLS:
587 case BPF_PROG_TYPE_SCHED_ACT:
590 case BPF_PROG_TYPE_LWT_IN:
591 case BPF_PROG_TYPE_LWT_OUT:
592 case BPF_PROG_TYPE_LWT_XMIT:
593 is_direct_pkt_access = true;
599 sk = kzalloc(sizeof(struct sock), GFP_USER);
605 sock_net_set(sk, net);
606 sock_init_data(NULL, sk);
608 skb = build_skb(data, 0);
617 skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
618 __skb_put(skb, size);
619 if (ctx && ctx->ifindex > 1) {
620 dev = dev_get_by_index(net, ctx->ifindex);
626 skb->protocol = eth_type_trans(skb, dev);
627 skb_reset_network_header(skb);
629 switch (skb->protocol) {
630 case htons(ETH_P_IP):
631 sk->sk_family = AF_INET;
632 if (sizeof(struct iphdr) <= skb_headlen(skb)) {
633 sk->sk_rcv_saddr = ip_hdr(skb)->saddr;
634 sk->sk_daddr = ip_hdr(skb)->daddr;
637 #if IS_ENABLED(CONFIG_IPV6)
638 case htons(ETH_P_IPV6):
639 sk->sk_family = AF_INET6;
640 if (sizeof(struct ipv6hdr) <= skb_headlen(skb)) {
641 sk->sk_v6_rcv_saddr = ipv6_hdr(skb)->saddr;
642 sk->sk_v6_daddr = ipv6_hdr(skb)->daddr;
651 __skb_push(skb, hh_len);
652 if (is_direct_pkt_access)
653 bpf_compute_data_pointers(skb);
654 ret = convert___skb_to_skb(skb, ctx);
657 ret = bpf_test_run(prog, skb, repeat, &retval, &duration, false);
661 if (skb_headroom(skb) < hh_len) {
662 int nhead = HH_DATA_ALIGN(hh_len - skb_headroom(skb));
664 if (pskb_expand_head(skb, nhead, 0, GFP_USER)) {
669 memset(__skb_push(skb, hh_len), 0, hh_len);
671 convert_skb_to___skb(skb, ctx);
674 /* bpf program can never convert linear skb to non-linear */
675 if (WARN_ON_ONCE(skb_is_nonlinear(skb)))
676 size = skb_headlen(skb);
677 ret = bpf_test_finish(kattr, uattr, skb->data, size, retval, duration);
679 ret = bpf_ctx_finish(kattr, uattr, ctx,
680 sizeof(struct __sk_buff));
682 if (dev && dev != net->loopback_dev)
685 bpf_sk_storage_free(sk);
691 int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
692 union bpf_attr __user *uattr)
694 u32 tailroom = SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
695 u32 headroom = XDP_PACKET_HEADROOM;
696 u32 size = kattr->test.data_size_in;
697 u32 repeat = kattr->test.repeat;
698 struct netdev_rx_queue *rxqueue;
699 struct xdp_buff xdp = {};
700 u32 retval, duration;
705 if (prog->expected_attach_type == BPF_XDP_DEVMAP ||
706 prog->expected_attach_type == BPF_XDP_CPUMAP)
708 if (kattr->test.ctx_in || kattr->test.ctx_out)
711 /* XDP have extra tailroom as (most) drivers use full page */
712 max_data_sz = 4096 - headroom - tailroom;
714 data = bpf_test_init(kattr, max_data_sz, headroom, tailroom);
716 return PTR_ERR(data);
718 rxqueue = __netif_get_rx_queue(current->nsproxy->net_ns->loopback_dev, 0);
719 xdp_init_buff(&xdp, headroom + max_data_sz + tailroom,
721 xdp_prepare_buff(&xdp, data, headroom, size, true);
723 bpf_prog_change_xdp(NULL, prog);
724 ret = bpf_test_run(prog, &xdp, repeat, &retval, &duration, true);
727 if (xdp.data != data + headroom || xdp.data_end != xdp.data + size)
728 size = xdp.data_end - xdp.data;
729 ret = bpf_test_finish(kattr, uattr, xdp.data, size, retval, duration);
731 bpf_prog_change_xdp(prog, NULL);
736 static int verify_user_bpf_flow_keys(struct bpf_flow_keys *ctx)
738 /* make sure the fields we don't use are zeroed */
739 if (!range_is_zero(ctx, 0, offsetof(struct bpf_flow_keys, flags)))
742 /* flags is allowed */
744 if (!range_is_zero(ctx, offsetofend(struct bpf_flow_keys, flags),
745 sizeof(struct bpf_flow_keys)))
751 int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
752 const union bpf_attr *kattr,
753 union bpf_attr __user *uattr)
755 struct bpf_test_timer t = { NO_PREEMPT };
756 u32 size = kattr->test.data_size_in;
757 struct bpf_flow_dissector ctx = {};
758 u32 repeat = kattr->test.repeat;
759 struct bpf_flow_keys *user_ctx;
760 struct bpf_flow_keys flow_keys;
761 const struct ethhdr *eth;
762 unsigned int flags = 0;
763 u32 retval, duration;
767 if (prog->type != BPF_PROG_TYPE_FLOW_DISSECTOR)
770 if (kattr->test.flags || kattr->test.cpu)
776 data = bpf_test_init(kattr, size, 0, 0);
778 return PTR_ERR(data);
780 eth = (struct ethhdr *)data;
785 user_ctx = bpf_ctx_init(kattr, sizeof(struct bpf_flow_keys));
786 if (IS_ERR(user_ctx)) {
788 return PTR_ERR(user_ctx);
791 ret = verify_user_bpf_flow_keys(user_ctx);
794 flags = user_ctx->flags;
797 ctx.flow_keys = &flow_keys;
799 ctx.data_end = (__u8 *)data + size;
801 bpf_test_timer_enter(&t);
803 retval = bpf_flow_dissect(prog, &ctx, eth->h_proto, ETH_HLEN,
805 } while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
806 bpf_test_timer_leave(&t);
811 ret = bpf_test_finish(kattr, uattr, &flow_keys, sizeof(flow_keys),
814 ret = bpf_ctx_finish(kattr, uattr, user_ctx,
815 sizeof(struct bpf_flow_keys));
823 int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog, const union bpf_attr *kattr,
824 union bpf_attr __user *uattr)
826 struct bpf_test_timer t = { NO_PREEMPT };
827 struct bpf_prog_array *progs = NULL;
828 struct bpf_sk_lookup_kern ctx = {};
829 u32 repeat = kattr->test.repeat;
830 struct bpf_sk_lookup *user_ctx;
831 u32 retval, duration;
834 if (prog->type != BPF_PROG_TYPE_SK_LOOKUP)
837 if (kattr->test.flags || kattr->test.cpu)
840 if (kattr->test.data_in || kattr->test.data_size_in || kattr->test.data_out ||
841 kattr->test.data_size_out)
847 user_ctx = bpf_ctx_init(kattr, sizeof(*user_ctx));
848 if (IS_ERR(user_ctx))
849 return PTR_ERR(user_ctx);
857 if (!range_is_zero(user_ctx, offsetofend(typeof(*user_ctx), local_port), sizeof(*user_ctx)))
860 if (user_ctx->local_port > U16_MAX || user_ctx->remote_port > U16_MAX) {
865 ctx.family = (u16)user_ctx->family;
866 ctx.protocol = (u16)user_ctx->protocol;
867 ctx.dport = (u16)user_ctx->local_port;
868 ctx.sport = (__force __be16)user_ctx->remote_port;
870 switch (ctx.family) {
872 ctx.v4.daddr = (__force __be32)user_ctx->local_ip4;
873 ctx.v4.saddr = (__force __be32)user_ctx->remote_ip4;
876 #if IS_ENABLED(CONFIG_IPV6)
878 ctx.v6.daddr = (struct in6_addr *)user_ctx->local_ip6;
879 ctx.v6.saddr = (struct in6_addr *)user_ctx->remote_ip6;
888 progs = bpf_prog_array_alloc(1, GFP_KERNEL);
894 progs->items[0].prog = prog;
896 bpf_test_timer_enter(&t);
898 ctx.selected_sk = NULL;
899 retval = BPF_PROG_SK_LOOKUP_RUN_ARRAY(progs, ctx, BPF_PROG_RUN);
900 } while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
901 bpf_test_timer_leave(&t);
906 user_ctx->cookie = 0;
907 if (ctx.selected_sk) {
908 if (ctx.selected_sk->sk_reuseport && !ctx.no_reuseport) {
913 user_ctx->cookie = sock_gen_cookie(ctx.selected_sk);
916 ret = bpf_test_finish(kattr, uattr, NULL, 0, retval, duration);
918 ret = bpf_ctx_finish(kattr, uattr, user_ctx, sizeof(*user_ctx));
921 bpf_prog_array_free(progs);
926 int bpf_prog_test_run_syscall(struct bpf_prog *prog,
927 const union bpf_attr *kattr,
928 union bpf_attr __user *uattr)
930 void __user *ctx_in = u64_to_user_ptr(kattr->test.ctx_in);
931 __u32 ctx_size_in = kattr->test.ctx_size_in;
936 /* doesn't support data_in/out, ctx_out, duration, or repeat or flags */
937 if (kattr->test.data_in || kattr->test.data_out ||
938 kattr->test.ctx_out || kattr->test.duration ||
939 kattr->test.repeat || kattr->test.flags)
942 if (ctx_size_in < prog->aux->max_ctx_offset ||
943 ctx_size_in > U16_MAX)
947 ctx = kzalloc(ctx_size_in, GFP_USER);
950 if (copy_from_user(ctx, ctx_in, ctx_size_in)) {
956 rcu_read_lock_trace();
957 retval = bpf_prog_run_pin_on_cpu(prog, ctx);
958 rcu_read_unlock_trace();
960 if (copy_to_user(&uattr->test.retval, &retval, sizeof(u32))) {
965 if (copy_to_user(ctx_in, ctx, ctx_size_in))