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| author | julian <julian@FreeBSD.org> | 2004-06-25 21:11:14 +0000 |
|---|---|---|
| committer | julian <julian@FreeBSD.org> | 2004-06-25 21:11:14 +0000 |
| commit | cf606d5f29ba03ae7d84a2c5e7458dbfb7db2d36 (patch) | |
| tree | 64aaf07e387c6e0f8cc1eae22b2a1376c18d7014 /sys/netgraph/ng_base.c | |
| parent | 2cf7db632c6326199a2eec3a4d6b3ee8f4acac92 (diff) | |
| download | FreeBSD-src-cf606d5f29ba03ae7d84a2c5e7458dbfb7db2d36.zip FreeBSD-src-cf606d5f29ba03ae7d84a2c5e7458dbfb7db2d36.tar.gz | |
Make the frameworkl responsible for not passing the nodes a NULL mbuf pointer.
this allows the nodes to not test for this..
Submitted by: Gleb Smirnoff <glebius@cell.sick.ru>
Diffstat (limited to 'sys/netgraph/ng_base.c')
| -rw-r--r-- | sys/netgraph/ng_base.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/netgraph/ng_base.c b/sys/netgraph/ng_base.c index f50f5f2..0616176 100644 --- a/sys/netgraph/ng_base.c +++ b/sys/netgraph/ng_base.c @@ -2139,6 +2139,13 @@ ng_snd_item(item_p item, int queue) * the node is derivable from the hook. * References are held on both by the item. */ + + /* Protect nodes from sending NULL pointers + * to each other + */ + if (m == NULL) + return (EINVAL); + CHECK_DATA_MBUF(NGI_M(item)); if (hook == NULL) { NG_FREE_ITEM(item); |
