diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/filter.c | 2 | ||||
| -rw-r--r-- | net/core/sock_map.c | 4 | ||||
| -rw-r--r-- | net/unix/af_unix.c | 9 | ||||
| -rw-r--r-- | net/unix/unix_bpf.c | 3 |
4 files changed, 11 insertions, 7 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index fcfcb72663ca..5fa9189eb772 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -503,7 +503,7 @@ static bool convert_bpf_ld_abs(struct sock_filter *fp, struct bpf_insn **insnp) ((unaligned_ok && offset >= 0) || (!unaligned_ok && offset >= 0 && offset + ip_align >= 0 && - offset + ip_align % size == 0))) { + (offset + ip_align) % size == 0))) { bool ldx_off_ok = offset <= S16_MAX; *insn++ = BPF_MOV64_REG(BPF_REG_TMP, BPF_REG_H); diff --git a/net/core/sock_map.c b/net/core/sock_map.c index b0e96337a269..02a68be3002a 100644 --- a/net/core/sock_map.c +++ b/net/core/sock_map.c @@ -530,7 +530,7 @@ static bool sock_map_redirect_allowed(const struct sock *sk) if (sk_is_tcp(sk)) return sk->sk_state != TCP_LISTEN; else - return sk->sk_state == TCP_ESTABLISHED; + return READ_ONCE(sk->sk_state) == TCP_ESTABLISHED; } static bool sock_map_sk_is_suitable(const struct sock *sk) @@ -543,7 +543,7 @@ static bool sock_map_sk_state_allowed(const struct sock *sk) if (sk_is_tcp(sk)) return (1 << sk->sk_state) & (TCPF_ESTABLISHED | TCPF_LISTEN); if (sk_is_stream_unix(sk)) - return (1 << sk->sk_state) & TCPF_ESTABLISHED; + return (1 << READ_ONCE(sk->sk_state)) & TCPF_ESTABLISHED; if (sk_is_vsock(sk) && (sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET)) return (1 << sk->sk_state) & TCPF_ESTABLISHED; diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 4c4a8d23ddd2..f668ff107722 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -3735,15 +3735,15 @@ static int bpf_iter_unix_seq_show(struct seq_file *seq, void *v) struct bpf_prog *prog; struct sock *sk = v; uid_t uid; - bool slow; int ret; if (v == SEQ_START_TOKEN) return 0; - slow = lock_sock_fast(sk); + lock_sock(sk); + unix_state_lock(sk); - if (unlikely(sk_unhashed(sk))) { + if (unlikely(sock_flag(sk, SOCK_DEAD))) { ret = SEQ_SKIP; goto unlock; } @@ -3753,7 +3753,8 @@ static int bpf_iter_unix_seq_show(struct seq_file *seq, void *v) prog = bpf_iter_get_info(&meta, false); ret = unix_prog_seq_show(prog, &meta, v, uid); unlock: - unlock_sock_fast(sk, slow); + unix_state_unlock(sk); + release_sock(sk); return ret; } diff --git a/net/unix/unix_bpf.c b/net/unix/unix_bpf.c index d14cd5454a8d..f86ff19e9764 100644 --- a/net/unix/unix_bpf.c +++ b/net/unix/unix_bpf.c @@ -185,6 +185,9 @@ int unix_stream_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool r */ if (!psock->sk_pair) { sk_pair = unix_peer(sk); + if (unlikely(!sk_pair)) + return -EINVAL; + sock_hold(sk_pair); psock->sk_pair = sk_pair; } |