Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

There were quite a few overlapping sets of changes here.

Daniel's bug fix for off-by-ones in the new BPF branch instructions,
along with the added allowances for "data_end > ptr + x" forms
collided with the metadata additions.

Along with those three changes came veritifer test cases, which in
their final form I tried to group together properly.  If I had just
trimmed GIT's conflict tags as-is, this would have split up the
meta tests unnecessarily.

In the socketmap code, a set of preemption disabling changes
overlapped with the rename of bpf_compute_data_end() to
bpf_compute_data_pointers().

Changes were made to the mv88e6060.c driver set addr method
which got removed in net-next.

The hyperv transport socket layer had a locking change in 'net'
which overlapped with a change of socket state macro usage
in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc MAINTAINERS
Simple merge

diff --cc drivers/net/ethernet/amazon/ena/ena_ethtool.c
Simple merge

diff --cc drivers/net/ethernet/amazon/ena/ena_netdev.c
Simple merge

diff --cc drivers/net/ethernet/broadcom/bnxt/bnxt.c
Simple merge

diff --cc drivers/net/ethernet/cavium/liquidio/lio_main.c
Simple merge

diff --cc drivers/net/ethernet/ibm/ibmvnic.c
Simple merge

diff --cc drivers/net/ethernet/intel/i40e/i40e_nvm.c
Simple merge

diff --cc drivers/net/ethernet/intel/i40e/i40e_txrx.c
Simple merge

diff --cc drivers/net/ethernet/mellanox/mlxsw/reg.h
Simple merge

diff --cc drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
Simple merge

diff --cc drivers/net/ethernet/netronome/nfp/nfp_net_common.c
Simple merge

diff --cc drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
Simple merge

diff --cc drivers/net/geneve.c
Simple merge

diff --cc drivers/net/macsec.c
Simple merge

diff --cc drivers/net/tun.c
Simple merge

diff --cc drivers/net/xen-netback/interface.c
Simple merge

diff --cc include/linux/filter.h
index 2d2db394b0ca72678b8c19fdfcfd576d266d62a0,818a0b26249ea2a836638204226cd73b106e7ccb..cdd78a7beaaed1488e74d4d9a49fa4aac44ffc2b
--- 1/include/linux/filter.h
--- 2/include/linux/filter.h
+++ b/include/linux/filter.h
@@@ -731,24 -725,10 +731,24 @@@ int xdp_do_redirect(struct net_device *
                    struct bpf_prog *prog);
  void xdp_do_flush_map(void);
  
 +/* Drivers not supporting XDP metadata can use this helper, which
 + * rejects any room expansion for metadata as a result.
 + */
 +static __always_inline void
 +xdp_set_data_meta_invalid(struct xdp_buff *xdp)
 +{
 +      xdp->data_meta = xdp->data + 1;
 +}
 +
 +static __always_inline bool
 +xdp_data_meta_unsupported(const struct xdp_buff *xdp)
 +{
 +      return unlikely(xdp->data_meta > xdp->data);
 +}
 +
  void bpf_warn_invalid_xdp_action(u32 act);
 -void bpf_warn_invalid_xdp_redirect(u32 ifindex);
  
- struct sock *do_sk_redirect_map(void);
+ struct sock *do_sk_redirect_map(struct sk_buff *skb);
  
  #ifdef CONFIG_BPF_JIT
  extern int bpf_jit_enable;

diff --cc include/linux/mod_devicetable.h
Simple merge

diff --cc include/linux/netdevice.h
Simple merge

diff --cc include/net/tcp.h
Simple merge

diff --cc kernel/bpf/arraymap.c
Simple merge

diff --cc kernel/bpf/devmap.c
index e5d3de7cff2e55d85e9dca7c1f5099b647f3e985,e745d6a88224f5b5e9a8241dc7dee5d35e4832de..ebdef54bf7df2b898e7d03a5ddc3b0c8a7554bbb
--- 1/kernel/bpf/devmap.c
--- 2/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@@ -81,9 -78,12 +81,12 @@@ static struct bpf_map *dev_map_alloc(un
        int err = -EINVAL;
        u64 cost;
  
+       if (!capable(CAP_NET_ADMIN))
+               return ERR_PTR(-EPERM);
+ 
        /* check sanity of attributes */
        if (attr->max_entries == 0 || attr->key_size != 4 ||
 -          attr->value_size != 4 || attr->map_flags & ~BPF_F_NUMA_NODE)
 +          attr->value_size != 4 || attr->map_flags & ~DEV_CREATE_FLAG_MASK)
                return ERR_PTR(-EINVAL);
  
        dtab = kzalloc(sizeof(*dtab), GFP_USER);

diff --cc kernel/bpf/hashtab.c
Simple merge

diff --cc kernel/bpf/sockmap.c
index 86ec846f2d5e9c9eccd7ccb7b1cd8c1e86c68c5d,2b6eb35ae5d39799a9ae33fe5bf07508d2b82a54..eef843c3b4193c238923f01802bd6baccbb614b8
--- 1/kernel/bpf/sockmap.c
--- 2/kernel/bpf/sockmap.c
+++ b/kernel/bpf/sockmap.c
@@@ -39,10 -39,8 +39,11 @@@
  #include <linux/workqueue.h>
  #include <linux/list.h>
  #include <net/strparser.h>
+ #include <net/tcp.h>
  
 +#define SOCK_CREATE_FLAG_MASK \
 +      (BPF_F_NUMA_NODE | BPF_F_RDONLY | BPF_F_WRONLY)
 +
  struct bpf_stab {
        struct bpf_map map;
        struct sock **sock_map;
@@@ -104,9 -102,16 +105,16 @@@ static int smap_verdict_func(struct sma
                return SK_DROP;
  
        skb_orphan(skb);
+       /* We need to ensure that BPF metadata for maps is also cleared
+        * when we orphan the skb so that we don't have the possibility
+        * to reference a stale map.
+        */
+       TCP_SKB_CB(skb)->bpf.map = NULL;
        skb->sk = psock->sock;
 -      bpf_compute_data_end(skb);
 +      bpf_compute_data_pointers(skb);
+       preempt_disable();
        rc = (*prog->bpf_func)(skb, prog->insnsi);
+       preempt_enable();
        skb->sk = NULL;
  
        return rc;
@@@ -490,9 -486,12 +489,12 @@@ static struct bpf_map *sock_map_alloc(u
        int err = -EINVAL;
        u64 cost;
  
+       if (!capable(CAP_NET_ADMIN))
+               return ERR_PTR(-EPERM);
+ 
        /* check sanity of attributes */
        if (attr->max_entries == 0 || attr->key_size != 4 ||
 -          attr->value_size != 4 || attr->map_flags & ~BPF_F_NUMA_NODE)
 +          attr->value_size != 4 || attr->map_flags & ~SOCK_CREATE_FLAG_MASK)
                return ERR_PTR(-EINVAL);
  
        if (attr->value_size > KMALLOC_MAX_SIZE)

diff --cc kernel/bpf/verifier.c
index 545b8c45a578c49e9462de3d24ecf1c172feecbf,c48ca2a34b5e131420f4795c4a0eaf9d9a64861d..d906775e12c1aee261d32abfa55ec2dd31e0090c
--- 1/kernel/bpf/verifier.c
--- 2/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@@ -1006,7 -1116,12 +1006,13 @@@ static int check_mem_access(struct bpf_
                /* ctx accesses must be at a fixed offset, so that we can
                 * determine what type of data were returned.
                 */
-               if (!tnum_is_const(reg->var_off)) {
+               if (reg->off) {
 -                      verbose("dereference of modified ctx ptr R%d off=%d+%d, ctx+const is allowed, ctx+const+const is not\n",
++                      verbose(env,
++                              "dereference of modified ctx ptr R%d off=%d+%d, ctx+const is allowed, ctx+const+const is not\n",
+                               regno, reg->off, off - reg->off);
+                       return -EACCES;
+               }
+               if (!tnum_is_const(reg->var_off) || reg->var_off.value) {
                        char tn_buf[48];
  
                        tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off);
@@@ -2341,12 -2431,14 +2346,15 @@@ static int check_alu_op(struct bpf_veri
  
  static void find_good_pkt_pointers(struct bpf_verifier_state *state,
                                   struct bpf_reg_state *dst_reg,
-                                  enum bpf_reg_type type)
++                                 enum bpf_reg_type type,
+                                  bool range_right_open)
  {
        struct bpf_reg_state *regs = state->regs, *reg;
+       u16 new_range;
        int i;
  
-       if (dst_reg->off < 0)
+       if (dst_reg->off < 0 ||
+           (dst_reg->off == 0 && range_right_open))
                /* This doesn't give us any range */
                return;
  
@@@ -2403,16 -2501,16 +2417,16 @@@
         * dst_reg->off is known < MAX_PACKET_OFF, therefore it fits in a u16.
         */
        for (i = 0; i < MAX_BPF_REG; i++)
 -              if (regs[i].type == PTR_TO_PACKET && regs[i].id == dst_reg->id)
 +              if (regs[i].type == type && regs[i].id == dst_reg->id)
                        /* keep the maximum range already checked */
-                       regs[i].range = max_t(u16, regs[i].range, dst_reg->off);
+                       regs[i].range = max(regs[i].range, new_range);
  
        for (i = 0; i < MAX_BPF_STACK; i += BPF_REG_SIZE) {
                if (state->stack_slot_type[i] != STACK_SPILL)
                        continue;
                reg = &state->spilled_regs[i / BPF_REG_SIZE];
 -              if (reg->type == PTR_TO_PACKET && reg->id == dst_reg->id)
 -                      reg->range = max(reg->range, new_range);
 +              if (reg->type == type && reg->id == dst_reg->id)
-                       reg->range = max_t(u16, reg->range, dst_reg->off);
++                      reg->range = max_t(u16, reg->range, new_range);
        }
  }
  
@@@ -2776,46 -2874,49 +2790,78 @@@ static int check_cond_jmp_op(struct bpf
        } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JGT &&
                   dst_reg->type == PTR_TO_PACKET &&
                   regs[insn->src_reg].type == PTR_TO_PACKET_END) {
-               find_good_pkt_pointers(this_branch, dst_reg, PTR_TO_PACKET);
+               /* pkt_data' > pkt_end */
 -              find_good_pkt_pointers(this_branch, dst_reg, false);
++              find_good_pkt_pointers(this_branch, dst_reg,
++                                     PTR_TO_PACKET, false);
+       } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JGT &&
+                  dst_reg->type == PTR_TO_PACKET_END &&
+                  regs[insn->src_reg].type == PTR_TO_PACKET) {
+               /* pkt_end > pkt_data' */
 -              find_good_pkt_pointers(other_branch, &regs[insn->src_reg], true);
++              find_good_pkt_pointers(other_branch, &regs[insn->src_reg],
++                                     PTR_TO_PACKET, true);
+       } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JLT &&
+                  dst_reg->type == PTR_TO_PACKET &&
+                  regs[insn->src_reg].type == PTR_TO_PACKET_END) {
+               /* pkt_data' < pkt_end */
 -              find_good_pkt_pointers(other_branch, dst_reg, true);
++              find_good_pkt_pointers(other_branch, dst_reg, PTR_TO_PACKET,
++                                     true);
        } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JLT &&
 -              find_good_pkt_pointers(this_branch, &regs[insn->src_reg], false);
+                  dst_reg->type == PTR_TO_PACKET_END &&
+                  regs[insn->src_reg].type == PTR_TO_PACKET) {
+               /* pkt_end < pkt_data' */
++              find_good_pkt_pointers(this_branch, &regs[insn->src_reg],
++                                     PTR_TO_PACKET, false);
+       } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JGE &&
                   dst_reg->type == PTR_TO_PACKET &&
                   regs[insn->src_reg].type == PTR_TO_PACKET_END) {
-               find_good_pkt_pointers(other_branch, dst_reg, PTR_TO_PACKET);
+               /* pkt_data' >= pkt_end */
 -              find_good_pkt_pointers(this_branch, dst_reg, true);
++              find_good_pkt_pointers(this_branch, dst_reg,
++                                     PTR_TO_PACKET, true);
        } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JGE &&
                   dst_reg->type == PTR_TO_PACKET_END &&
                   regs[insn->src_reg].type == PTR_TO_PACKET) {
 -              find_good_pkt_pointers(other_branch, &regs[insn->src_reg], false);
+               /* pkt_end >= pkt_data' */
-                                      PTR_TO_PACKET);
 +              find_good_pkt_pointers(other_branch, &regs[insn->src_reg],
 -              find_good_pkt_pointers(other_branch, dst_reg, false);
++                                     PTR_TO_PACKET, false);
+       } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JLE &&
+                  dst_reg->type == PTR_TO_PACKET &&
+                  regs[insn->src_reg].type == PTR_TO_PACKET_END) {
+               /* pkt_data' <= pkt_end */
++              find_good_pkt_pointers(other_branch, dst_reg,
++                                     PTR_TO_PACKET, false);
        } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JLE &&
                   dst_reg->type == PTR_TO_PACKET_END &&
                   regs[insn->src_reg].type == PTR_TO_PACKET) {
 -              find_good_pkt_pointers(this_branch, &regs[insn->src_reg], true);
+               /* pkt_end <= pkt_data' */
-                                      PTR_TO_PACKET);
 +              find_good_pkt_pointers(this_branch, &regs[insn->src_reg],
-               find_good_pkt_pointers(this_branch, dst_reg, PTR_TO_PACKET_META);
++                                     PTR_TO_PACKET, true);
 +      } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JGT &&
 +                 dst_reg->type == PTR_TO_PACKET_META &&
 +                 reg_is_init_pkt_pointer(&regs[insn->src_reg], PTR_TO_PACKET)) {
-               find_good_pkt_pointers(other_branch, dst_reg, PTR_TO_PACKET_META);
++              find_good_pkt_pointers(this_branch, dst_reg,
++                                     PTR_TO_PACKET_META, false);
 +      } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JLT &&
 +                 dst_reg->type == PTR_TO_PACKET_META &&
 +                 reg_is_init_pkt_pointer(&regs[insn->src_reg], PTR_TO_PACKET)) {
-                                      PTR_TO_PACKET_META);
++              find_good_pkt_pointers(other_branch, dst_reg,
++                                     PTR_TO_PACKET_META, false);
 +      } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JGE &&
 +                 reg_is_init_pkt_pointer(dst_reg, PTR_TO_PACKET) &&
 +                 regs[insn->src_reg].type == PTR_TO_PACKET_META) {
 +              find_good_pkt_pointers(other_branch, &regs[insn->src_reg],
-                                      PTR_TO_PACKET_META);
++                                     PTR_TO_PACKET_META, false);
 +      } else if (BPF_SRC(insn->code) == BPF_X && opcode == BPF_JLE &&
 +                 reg_is_init_pkt_pointer(dst_reg, PTR_TO_PACKET) &&
 +                 regs[insn->src_reg].type == PTR_TO_PACKET_META) {
 +              find_good_pkt_pointers(this_branch, &regs[insn->src_reg],
++                                     PTR_TO_PACKET_META, false);
        } else if (is_pointer_value(env, insn->dst_reg)) {
 -              verbose("R%d pointer comparison prohibited\n", insn->dst_reg);
 +              verbose(env, "R%d pointer comparison prohibited\n",
 +                      insn->dst_reg);
                return -EACCES;
        }
 -      if (log_level)
 -              print_verifier_state(this_branch);
 +      if (env->log.level)
 +              print_verifier_state(env, this_branch);
        return 0;
  }
  

diff --cc kernel/events/core.c
Simple merge

diff --cc net/bridge/br_netlink.c
Simple merge

diff --cc net/can/af_can.c
Simple merge

diff --cc net/core/dev.c
Simple merge

diff --cc net/core/ethtool.c
Simple merge

diff --cc net/core/filter.c
index ccf62f44140a4a2a86f23ceccbfdc013a784f0ba,aa0265997f930c86229ee1658063ba9718c6dc79..b79c44cc8145a1960b5e5d03c281a3e4ac82c44e
--- 1/net/core/filter.c
--- 2/net/core/filter.c
+++ b/net/core/filter.c
@@@ -3894,15 -3682,8 +3895,14 @@@ static bool sk_skb_is_valid_access(int 
                                   enum bpf_access_type type,
                                   struct bpf_insn_access_aux *info)
  {
 +      switch (off) {
 +      case bpf_ctx_range(struct __sk_buff, tc_classid):
 +      case bpf_ctx_range(struct __sk_buff, data_meta):
 +              return false;
 +      }
 +
        if (type == BPF_WRITE) {
                switch (off) {
-               case bpf_ctx_range(struct __sk_buff, mark):
                case bpf_ctx_range(struct __sk_buff, tc_index):
                case bpf_ctx_range(struct __sk_buff, priority):
                        break;
@@@ -3912,6 -3693,9 +3912,8 @@@
        }
  
        switch (off) {
 -      case bpf_ctx_range(struct __sk_buff, tc_classid):
+       case bpf_ctx_range(struct __sk_buff, mark):
+               return false;
        case bpf_ctx_range(struct __sk_buff, data):
                info->reg_type = PTR_TO_PACKET;
                break;

diff --cc net/core/rtnetlink.c
index 20b550d07fe3851fb6c589fd1eecb32c7b2b4d05,5ace48926b196666265a7f95b77779cbdd1ff848..04680a53c8dd48d6a84ec2dc78f68b73e5a9bf13
--- 1/net/core/rtnetlink.c
--- 2/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@@ -4377,11 -4287,14 +4381,14 @@@ static int rtnetlink_event(struct notif
        case NETDEV_CHANGENAME:
        case NETDEV_FEAT_CHANGE:
        case NETDEV_BONDING_FAILOVER:
+       case NETDEV_POST_TYPE_CHANGE:
        case NETDEV_NOTIFY_PEERS:
+       case NETDEV_CHANGEUPPER:
        case NETDEV_RESEND_IGMP:
        case NETDEV_CHANGEINFODATA:
+       case NETDEV_CHANGE_TX_QUEUE_LEN:
                rtmsg_ifinfo_event(RTM_NEWLINK, dev, 0, rtnl_get_event(event),
 -                                 GFP_KERNEL);
 +                                 GFP_KERNEL, NULL);
                break;
        default:
                break;

diff --cc net/core/skbuff.c
Simple merge

diff --cc net/core/sock.c
Simple merge

diff --cc net/ipv4/inet_connection_sock.c
Simple merge

diff --cc net/ipv4/tcp_input.c
Simple merge

diff --cc net/ipv4/tcp_ipv4.c
Simple merge

diff --cc net/ipv4/udp.c
Simple merge

diff --cc net/netlink/af_netlink.c
Simple merge

diff --cc net/packet/af_packet.c
Simple merge

diff --cc net/rxrpc/af_rxrpc.c
Simple merge

diff --cc net/sctp/socket.c
Simple merge

diff --cc net/vmw_vsock/hyperv_transport.c
index bbac023e70d1741ab2ad6a33d9ee7a954cf0e33c,e21991fe883a7c5f03a3d6eefb52518ef9a67d6c..5583df708b8cfedb61ca2e6fec93a79789d6f949
--- 1/net/vmw_vsock/hyperv_transport.c
--- 2/net/vmw_vsock/hyperv_transport.c
+++ b/net/vmw_vsock/hyperv_transport.c
@@@ -310,7 -310,9 +310,9 @@@ static void hvs_close_connection(struc
        struct sock *sk = get_per_channel_state(chan);
        struct vsock_sock *vsk = vsock_sk(sk);
  
 -      sk->sk_state = SS_UNCONNECTED;
+       lock_sock(sk);
+ 
 +      sk->sk_state = TCP_CLOSE;
        sock_set_flag(sk, SOCK_DONE);
        vsk->peer_shutdown |= SEND_SHUTDOWN | RCV_SHUTDOWN;
  
@@@ -344,8 -348,10 +348,9 @@@ static void hvs_open_connection(struct 
        if (!sk)
                return;
  
 -
 -      if ((conn_from_host && sk->sk_state != VSOCK_SS_LISTEN) ||
 -          (!conn_from_host && sk->sk_state != SS_CONNECTING))
+       lock_sock(sk);
 +      if ((conn_from_host && sk->sk_state != TCP_LISTEN) ||
 +          (!conn_from_host && sk->sk_state != TCP_SYN_SENT))
                goto out;
  
        if (conn_from_host) {
@@@ -395,11 -401,9 +400,9 @@@
  
                vsock_insert_connected(vnew);
  
-               lock_sock(sk);
                vsock_enqueue_accept(sk, new);
-               release_sock(sk);
        } else {
 -              sk->sk_state = SS_CONNECTED;
 +              sk->sk_state = TCP_ESTABLISHED;
                sk->sk_socket->state = SS_CONNECTED;
  
                vsock_insert_connected(vsock_sk(sk));

diff --cc scripts/mod/devicetable-offsets.c
Simple merge

diff --cc scripts/mod/file2alias.c
Simple merge

diff --cc tools/include/uapi/linux/bpf.h
Simple merge

diff --cc tools/testing/selftests/bpf/bpf_helpers.h
index 609514f7448254e976c2b7d0b58cb20a24b19365,b2e02bdcd098f6380c80bc190e3986acb1007188..abfa4c5c8527cd2acfa729630384cf97d0fec254
--- 1/tools/testing/selftests/bpf/bpf_helpers.h
--- 2/tools/testing/selftests/bpf/bpf_helpers.h
+++ b/tools/testing/selftests/bpf/bpf_helpers.h
@@@ -67,10 -65,7 +67,10 @@@ static int (*bpf_xdp_adjust_meta)(void 
  static int (*bpf_setsockopt)(void *ctx, int level, int optname, void *optval,
                             int optlen) =
        (void *) BPF_FUNC_setsockopt;
- static int (*bpf_sk_redirect_map)(void *map, int key, int flags) =
 +static int (*bpf_getsockopt)(void *ctx, int level, int optname, void *optval,
 +                           int optlen) =
 +      (void *) BPF_FUNC_getsockopt;
+ static int (*bpf_sk_redirect_map)(void *ctx, void *map, int key, int flags) =
        (void *) BPF_FUNC_sk_redirect_map;
  static int (*bpf_sock_map_update)(void *map, void *key, void *value,
                                  unsigned long long flags) =

diff --cc tools/testing/selftests/bpf/test_maps.c
Simple merge

diff --cc tools/testing/selftests/bpf/test_verifier.c
index cc91d0159f436cb12367b68c0f51a63314502292,64ae21f644896a74bb624d6f873463b5b2d07312..1b93941bdfeaa68a33d738100a9570235232c542
--- 1/tools/testing/selftests/bpf/test_verifier.c
--- 2/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@@ -6645,325 -6657,500 +6657,819 @@@ static struct bpf_test tests[] = 
                .errstr = "BPF_END uses reserved fields",
                .result = REJECT,
        },
 +      {
 +              "meta access, test1",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = ACCEPT,
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test2",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_SUB, BPF_REG_0, 8),
 +                      BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = REJECT,
 +              .errstr = "invalid access to packet, off=-8",
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test3",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_end)),
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = REJECT,
 +              .errstr = "invalid access to packet",
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test4",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_end)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_4),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = REJECT,
 +              .errstr = "invalid access to packet",
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test5",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_3),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_4, 3),
 +                      BPF_MOV64_IMM(BPF_REG_2, -8),
 +                      BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
 +                                   BPF_FUNC_xdp_adjust_meta),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_3, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = REJECT,
 +              .errstr = "R3 !read_ok",
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test6",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_3),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 +                      BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_0, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = REJECT,
 +              .errstr = "invalid access to packet",
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test7",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_3),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 +                      BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = ACCEPT,
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test8",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 0xFFFF),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = ACCEPT,
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test9",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 0xFFFF),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 1),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = REJECT,
 +              .errstr = "invalid access to packet",
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test10",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_end)),
 +                      BPF_MOV64_IMM(BPF_REG_5, 42),
 +                      BPF_MOV64_IMM(BPF_REG_6, 24),
 +                      BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_5, -8),
 +                      BPF_STX_XADD(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
 +                      BPF_LDX_MEM(BPF_DW, BPF_REG_5, BPF_REG_10, -8),
 +                      BPF_JMP_IMM(BPF_JGT, BPF_REG_5, 100, 6),
 +                      BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_5),
 +                      BPF_MOV64_REG(BPF_REG_5, BPF_REG_3),
 +                      BPF_MOV64_REG(BPF_REG_6, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_5, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = REJECT,
 +              .errstr = "invalid access to packet",
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test11",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_MOV64_IMM(BPF_REG_5, 42),
 +                      BPF_MOV64_IMM(BPF_REG_6, 24),
 +                      BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_5, -8),
 +                      BPF_STX_XADD(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
 +                      BPF_LDX_MEM(BPF_DW, BPF_REG_5, BPF_REG_10, -8),
 +                      BPF_JMP_IMM(BPF_JGT, BPF_REG_5, 100, 6),
 +                      BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_5),
 +                      BPF_MOV64_REG(BPF_REG_5, BPF_REG_2),
 +                      BPF_MOV64_REG(BPF_REG_6, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 8),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_5, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = ACCEPT,
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
 +      {
 +              "meta access, test12",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_meta)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data)),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
 +                                  offsetof(struct xdp_md, data_end)),
 +                      BPF_MOV64_REG(BPF_REG_5, BPF_REG_3),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 16),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_4, 5),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_3, 0),
 +                      BPF_MOV64_REG(BPF_REG_5, BPF_REG_2),
 +                      BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 16),
 +                      BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 1),
 +                      BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 +                      BPF_MOV64_IMM(BPF_REG_0, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = ACCEPT,
 +              .prog_type = BPF_PROG_TYPE_XDP,
 +      },
+       {
+               "arithmetic ops make PTR_TO_CTX unusable",
+               .insns = {
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1,
+                                     offsetof(struct __sk_buff, data) -
+                                     offsetof(struct __sk_buff, mark)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
+                                   offsetof(struct __sk_buff, mark)),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "dereference of modified ctx ptr R1 off=68+8, ctx+const is allowed, ctx+const+const is not",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_SCHED_CLS,
+       },
+       {
+               "XDP pkt read, pkt_end mangling, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_end mangling, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_ALU64_IMM(BPF_SUB, BPF_REG_3, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' > pkt_end, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' > pkt_end, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data' > pkt_end, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 0),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_end > pkt_data', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_end > pkt_data', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_end > pkt_data', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' < pkt_end, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data' < pkt_end, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' < pkt_end, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_end < pkt_data', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_end < pkt_data', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_end < pkt_data', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_3, BPF_REG_1, 0),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' >= pkt_end, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data' >= pkt_end, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' >= pkt_end, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_1, BPF_REG_3, 0),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_end >= pkt_data', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
 +      {
 +              "bpf_exit with invalid return code. test1",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .errstr = "R0 has value (0x0; 0xffffffff)",
 +              .result = REJECT,
 +              .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
 +      },
 +      {
 +              "bpf_exit with invalid return code. test2",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
 +                      BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 1),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = ACCEPT,
 +              .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
 +      },
 +      {
 +              "bpf_exit with invalid return code. test3",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
 +                      BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 3),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .errstr = "R0 has value (0x0; 0x3)",
 +              .result = REJECT,
 +              .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
 +      },
 +      {
 +              "bpf_exit with invalid return code. test4",
 +              .insns = {
 +                      BPF_MOV64_IMM(BPF_REG_0, 1),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .result = ACCEPT,
 +              .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
 +      },
 +      {
 +              "bpf_exit with invalid return code. test5",
 +              .insns = {
 +                      BPF_MOV64_IMM(BPF_REG_0, 2),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .errstr = "R0 has value (0x2; 0x0)",
 +              .result = REJECT,
 +              .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
 +      },
 +      {
 +              "bpf_exit with invalid return code. test6",
 +              .insns = {
 +                      BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .errstr = "R0 is not a known value (ctx)",
 +              .result = REJECT,
 +              .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
 +      },
 +      {
 +              "bpf_exit with invalid return code. test7",
 +              .insns = {
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
 +                      BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, 4),
 +                      BPF_ALU64_REG(BPF_MUL, BPF_REG_0, BPF_REG_2),
 +                      BPF_EXIT_INSN(),
 +              },
 +              .errstr = "R0 has unknown scalar value",
 +              .result = REJECT,
 +              .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
 +      },
+       {
+               "XDP pkt read, pkt_end >= pkt_data', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_end >= pkt_data', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' <= pkt_end, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data' <= pkt_end, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data' <= pkt_end, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_end <= pkt_data', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_end <= pkt_data', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_end <= pkt_data', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_end)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_3, BPF_REG_1, 0),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
  };
  
  static int probe_filter_length(const struct bpf_insn *fp)