diff options
| author | Kulikov Vasiliy <segooon@gmail.com> | 2010-07-17 05:21:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-07-18 15:07:14 -0700 |
| commit | 8e64159dfb480b30233d947d5a3cd793dfea738f (patch) | |
| tree | 81e564d8f12fe7c8a7b9819572a1f1787c1d224e | |
| parent | bfc978fa5f3005e5dfb39c52393c3339f4f00233 (diff) | |
net: dccp: fix sign bug
'gap' is unsigned, so this code is wrong:
gap = -new_head;
...
if (gap > 0) { ... }
Make 'gap' signed.
The semantic patch that finds this problem (many false-positive results):
(http://coccinelle.lip6.fr/)
// <smpl>
@ r1 @
identifier f;
@@
int f(...) { ... }
@@
identifier r1.f;
type T;
unsigned T x;
@@
*x = f(...)
...
*x > 0
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/dccp/ackvec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c index 2abddee4830..92a6fcb40d7 100644 --- a/net/dccp/ackvec.c +++ b/net/dccp/ackvec.c @@ -201,7 +201,7 @@ static inline int dccp_ackvec_set_buf_head_state(struct dccp_ackvec *av, const unsigned int packets, const unsigned char state) { - unsigned int gap; + long gap; long new_head; if (av->av_vec_len + packets > DCCP_MAX_ACKVEC_LEN) |