diff options
| author | Brian Behlendorf <[email protected]> | 2013-01-22 09:05:49 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2013-01-22 09:38:17 -0800 |
| commit | 09a661e960df49f1256ba4c5ae15f6956d27df84 (patch) | |
| tree | 8b03581b19d0fa08227b204cde42e8df47b7916e /module | |
| parent | ee93035378ff1f0769bb4216dc35057a2f14f9b9 (diff) | |
Fix zpl_revalidate() NULL deref
In zpl_revalidate() it's possible for the nameidata to be NULL
for kernels which still accept the parameter. In particular,
lookup_one_len() calls d_revalidate() with a NULL nameidata.
Resolve the issue by checking for a NULL nameidata in which case
just set the flags to 0.
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #1226
Diffstat (limited to 'module')
| -rw-r--r-- | module/zfs/zpl_inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/module/zfs/zpl_inode.c b/module/zfs/zpl_inode.c index 0f6f3a41e..e40628878 100644 --- a/module/zfs/zpl_inode.c +++ b/module/zfs/zpl_inode.c @@ -396,7 +396,7 @@ static int #ifdef HAVE_D_REVALIDATE_NAMEIDATA zpl_revalidate(struct dentry *dentry, struct nameidata *nd) { - unsigned int flags = nd->flags; + unsigned int flags = (nd ? nd->flags : 0); #else zpl_revalidate(struct dentry *dentry, unsigned int flags) { |