Messages in this thread | | | Date | Sat, 21 Mar 2015 14:47:32 -0400 | From | Taesoo Kim <> | Subject | Re: [PATCH] NFS: fix potential NULL deref in nfs_closedir() |
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Ops. After reading nfs code, we also find out that nfs_opendir() always allocates ctx obj (for private_data), unlike other fs allocate private_data right before seeking dentries.
Sorry for the false alarm.
Taesoo
On 03/21/15 at 11:01am, Christoph Hellwig wrote: > On Sat, Mar 21, 2015 at 12:21:18AM -0400, Taesoo Kim wrote: > > From: Byoungyoung Lee <lifeasageek@gmail.com> > > > > When filp->private_data is NULL, put_nfs_open_dir_context() > > deferences its pointer (fi->list, fi->cred), similar to what > > other file systems handle '.release' api (9p, cifs, btrfs, > > ext4, ocfs2). > > Why woud filp->private_data ever be NULL here?
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