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authorAl Viro <viro@zeniv.linux.org.uk>2011-03-10 09:45:49 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-10 09:45:49 +0100
commit9177ada99d5e69fe91950b3ef5c23f2bcd109987 (patch)
tree4de42636f1c2dd2f6a230d48c6c5ef507026ec7c /fs/fat/namei_vfat.c
parentjfs: fix d_revalidate oopsen on NFS exports (diff)
downloadlinux-9177ada99d5e69fe91950b3ef5c23f2bcd109987.tar.xz
linux-9177ada99d5e69fe91950b3ef5c23f2bcd109987.zip
fat: fix d_revalidate oopsen on NFS exports
can't blindly check nd->flags in ->d_revalidate() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/fat/namei_vfat.c')
-rw-r--r--fs/fat/namei_vfat.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index f88f752babd9..adae3fb7451a 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -43,7 +43,7 @@ static int vfat_revalidate_shortname(struct dentry *dentry)
static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
{
- if (nd->flags & LOOKUP_RCU)
+ if (nd && nd->flags & LOOKUP_RCU)
return -ECHILD;
/* This is not negative dentry. Always valid. */
@@ -54,7 +54,7 @@ static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
{
- if (nd->flags & LOOKUP_RCU)
+ if (nd && nd->flags & LOOKUP_RCU)
return -ECHILD;
/*