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| author | Eric Dumazet <dada1@cosmosbay.com> | 2005-09-06 14:51:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-09-06 14:51:39 -0700 |
| commit | 9261c9b042547d01eeb206cf0e21ce72832245ec (patch) | |
| tree | e6dbce47404e1d40dff0fb5814463d89370a6642 /net/core/sock.c | |
| parent | fe2d5295a11e2ab2d6f4e7ea074816000b32eba3 (diff) | |
| download | linux-9261c9b042547d01eeb206cf0e21ce72832245ec.tar.gz linux-9261c9b042547d01eeb206cf0e21ce72832245ec.tar.bz2 linux-9261c9b042547d01eeb206cf0e21ce72832245ec.zip | |
[NET]: Make sure l_linger is unsigned to avoid negative timeouts
One of my x86_64 (linux 2.6.13) server log is filled with :
schedule_timeout: wrong timeout value ffffffffffffff06 from ffffffff802e63ca
schedule_timeout: wrong timeout value ffffffffffffff06 from ffffffff802e63ca
schedule_timeout: wrong timeout value ffffffffffffff06 from ffffffff802e63ca
schedule_timeout: wrong timeout value ffffffffffffff06 from ffffffff802e63ca
schedule_timeout: wrong timeout value ffffffffffffff06 from ffffffff802e63ca
This is because some application does a
struct linger li;
li.l_onoff = 1;
li.l_linger = -1;
setsockopt(sock, SOL_SOCKET, SO_LINGER, &li, sizeof(li));
And unfortunatly l_linger is defined as a 'signed int' in
include/linux/socket.h:
struct linger {
int l_onoff; /* Linger active */
int l_linger; /* How long to linger for */
};
I dont know if it's safe to change l_linger to 'unsigned int' in the
include file (It might be defined as int in ABI specs)
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index c13594579bfb..b32b1815ae5a 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -341,11 +341,11 @@ set_rcvbuf: sock_reset_flag(sk, SOCK_LINGER); else { #if (BITS_PER_LONG == 32) - if (ling.l_linger >= MAX_SCHEDULE_TIMEOUT/HZ) + if ((unsigned int)ling.l_linger >= MAX_SCHEDULE_TIMEOUT/HZ) sk->sk_lingertime = MAX_SCHEDULE_TIMEOUT; else #endif - sk->sk_lingertime = ling.l_linger * HZ; + sk->sk_lingertime = (unsigned int)ling.l_linger * HZ; sock_set_flag(sk, SOCK_LINGER); } break; |