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| author | David S. Miller <davem@davemloft.net> | 2020-06-13 15:28:08 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-13 15:28:08 -0700 |
| commit | fa7566a0d68f8467846cba8ec29f1551b0a42de9 (patch) | |
| tree | c520797b309d68cacd4bb9089473af7bf8644f07 /net/core/filter.c | |
| parent | bf97bac9dc6481e9f68992e52bed5cc4b210e636 (diff) | |
| parent | 29fcb05bbf1a7008900bb9bee347bdbfc7171036 (diff) | |
| download | linux-fa7566a0d68f8467846cba8ec29f1551b0a42de9.tar.gz linux-fa7566a0d68f8467846cba8ec29f1551b0a42de9.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2020-06-12
The following pull-request contains BPF updates for your *net* tree.
We've added 26 non-merge commits during the last 10 day(s) which contain
a total of 27 files changed, 348 insertions(+), 93 deletions(-).
The main changes are:
1) sock_hash accounting fix, from Andrey.
2) libbpf fix and probe_mem sanitizing, from Andrii.
3) sock_hash fixes, from Jakub.
4) devmap_val fix, from Jesper.
5) load_bytes_relative fix, from YiFei.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/filter.c')
| -rw-r--r-- | net/core/filter.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 209482a4eaa2..73395384afe2 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -1755,25 +1755,27 @@ BPF_CALL_5(bpf_skb_load_bytes_relative, const struct sk_buff *, skb, u32, offset, void *, to, u32, len, u32, start_header) { u8 *end = skb_tail_pointer(skb); - u8 *net = skb_network_header(skb); - u8 *mac = skb_mac_header(skb); - u8 *ptr; + u8 *start, *ptr; - if (unlikely(offset > 0xffff || len > (end - mac))) + if (unlikely(offset > 0xffff)) goto err_clear; switch (start_header) { case BPF_HDR_START_MAC: - ptr = mac + offset; + if (unlikely(!skb_mac_header_was_set(skb))) + goto err_clear; + start = skb_mac_header(skb); break; case BPF_HDR_START_NET: - ptr = net + offset; + start = skb_network_header(skb); break; default: goto err_clear; } - if (likely(ptr >= mac && ptr + len <= end)) { + ptr = start + offset; + + if (likely(ptr + len <= end)) { memcpy(to, ptr, len); return 0; } @@ -4340,8 +4342,6 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname, } break; case SO_BINDTODEVICE: - ret = -ENOPROTOOPT; -#ifdef CONFIG_NETDEVICES optlen = min_t(long, optlen, IFNAMSIZ - 1); strncpy(devname, optval, optlen); devname[optlen] = 0; @@ -4360,7 +4360,6 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname, dev_put(dev); } ret = sock_bindtoindex(sk, ifindex, false); -#endif break; default: ret = -EINVAL; |