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| author |   David S. Miller <davem@sunset.davemloft.net> | 2006-04-20 00:10:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-04-20 00:10:50 -0700 |
| commit | dc6de33674608f978ec29f5c2f7e3af458c06f78 (patch) | |
| tree | 1b314717cdb27cf75478c13f85249f85f6997f48 /include/net | |
| parent | [TCP]: Account skb overhead in tcp_fragment (diff) | |
| download | linux-dev-dc6de33674608f978ec29f5c2f7e3af458c06f78.tar.xz linux-dev-dc6de33674608f978ec29f5c2f7e3af458c06f78.zip | |
[NET]: Add skb->truesize assertion checking.
Add some sanity checking. truesize should be at least sizeof(struct
sk_buff) plus the current packet length. If not, then truesize is
seriously mangled and deserves a kernel log message.
Currently we'll do the check for release of stream socket buffers.
But we can add checks to more spots over time.
Incorporating ideas from Herbert Xu.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/sock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index af2b0544586e..ff8b0dad7b0f 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -454,6 +454,7 @@ static inline void sk_stream_set_owner_r(struct sk_buff *skb, struct sock *sk) static inline void sk_stream_free_skb(struct sock *sk, struct sk_buff *skb) { + skb_truesize_check(skb); sock_set_flag(sk, SOCK_QUEUE_SHRUNK); sk->sk_wmem_queued -= skb->truesize; sk->sk_forward_alloc += skb->truesize; |