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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 /net/core/stream.c | |
| parent | b60b49ea6a3e1f8dcaf4148dad0daab61ab766d2 (diff) | |
| download | kernel-mfld-blackbay-dc6de33674608f978ec29f5c2f7e3af458c06f78.tar.gz kernel-mfld-blackbay-dc6de33674608f978ec29f5c2f7e3af458c06f78.tar.bz2 kernel-mfld-blackbay-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 'net/core/stream.c')
| -rw-r--r-- | net/core/stream.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/stream.c b/net/core/stream.c index 35e25259fd9..e9489696f69 100644 --- a/net/core/stream.c +++ b/net/core/stream.c @@ -176,6 +176,7 @@ void sk_stream_rfree(struct sk_buff *skb) { struct sock *sk = skb->sk; + skb_truesize_check(skb); atomic_sub(skb->truesize, &sk->sk_rmem_alloc); sk->sk_forward_alloc += skb->truesize; } |