summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorpeter <peter@FreeBSD.org>2001-12-13 23:46:01 +0000
committerpeter <peter@FreeBSD.org>2001-12-13 23:46:01 +0000
commita194c4400184a010d8a5bf8c6196b5072c814c22 (patch)
tree2c16a1c337cbb130e3e27207e584eb4570e00917
parent91e55e40ce426978db952fe0bc2bf5eaaadffcb1 (diff)
downloadFreeBSD-src-a194c4400184a010d8a5bf8c6196b5072c814c22.zip
FreeBSD-src-a194c4400184a010d8a5bf8c6196b5072c814c22.tar.gz
If we were called to allocate a vnode that is not associated with a
mount point, do not dereference the NULL mp argument.
-rw-r--r--sys/kern/vfs_subr.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index ae89f86..14c2bdc 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -539,6 +539,8 @@ vlrureclaim(struct mount *mp, int count)
{
struct vnode *vp;
+ if (mp == NULL)
+ return;
mtx_lock(&mntvnode_mtx);
while (count && (vp = TAILQ_FIRST(&mp->mnt_nvnodelist)) != NULL) {
TAILQ_REMOVE(&mp->mnt_nvnodelist, vp, v_nmntvnodes);
OpenPOWER on IntegriCloud