diff options
| author | Alfred Perlstein <alfred@FreeBSD.org> | 2016-02-02 05:57:59 +0000 |
|---|---|---|
| committer | Alfred Perlstein <alfred@FreeBSD.org> | 2016-02-02 05:57:59 +0000 |
| commit | 7325dfbb59e38848a70546ab4c6a09d7b676fea7 (patch) | |
| tree | 1d237b239ea69d18618f1b1b173368ea98474a31 /sys/kern/uipc_socket.c | |
| parent | 92deafc3a3a9fb9221c49e574db99571b8080a9f (diff) | |
Notes
Diffstat (limited to 'sys/kern/uipc_socket.c')
| -rw-r--r-- | sys/kern/uipc_socket.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c index 350ca3cdd0b0..5d2247fddb1d 100644 --- a/sys/kern/uipc_socket.c +++ b/sys/kern/uipc_socket.c @@ -196,7 +196,7 @@ VNET_DEFINE(struct hhook_head *, socket_hhh[HHOOK_SOCKET_LAST + 1]); * NB: The orginal sysctl somaxconn is still available but hidden * to prevent confusion about the actual purpose of this number. */ -static int somaxconn = SOMAXCONN; +static u_int somaxconn = SOMAXCONN; static int sysctl_somaxconn(SYSCTL_HANDLER_ARGS) @@ -209,7 +209,13 @@ sysctl_somaxconn(SYSCTL_HANDLER_ARGS) if (error || !req->newptr ) return (error); - if (val < 1 || val > USHRT_MAX) + /* + * The purpose of the UINT_MAX / 3 limit, is so that the formula + * 3 * so_qlimit / 2 + * below, will not overflow. + */ + + if (val < 1 || val > UINT_MAX / 3) return (EINVAL); somaxconn = val; |