diff options
| author | Ronnie Sahlberg <lsahlber@redhat.com> | 2022-10-18 01:48:26 +0200 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2022-10-18 18:33:43 +0200 |
| commit | 053569ccde2a41abcc592781451cd16eaa6e8bab (patch) | |
| tree | ac5a59779bfe05d8b8c982360f15f609c4e68c9d /fs | |
| parent | cifs: use LIST_HEAD() and list_move() to simplify code (diff) | |
| download | linux-053569ccde2a41abcc592781451cd16eaa6e8bab.tar.xz linux-053569ccde2a41abcc592781451cd16eaa6e8bab.zip | |
cifs: set rc to -ENOENT if we can not get a dentry for the cached dir
We already set rc to this return code further down in the function but
we can set it earlier in order to suppress a smash warning.
Also fix a false positive for Coverity. The reason this is a false positive is
that this happens during umount after all files and directories have been closed
but mosetting on ->on_list to suppress the warning.
Reported-by: Dan carpenter <dan.carpenter@oracle.com>
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1525256 ("Concurrent data access violations")
Fixes: a350d6e73f5e ("cifs: enable caching of directories for which a lease is held")
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/cached_dir.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/cifs/cached_dir.c b/fs/cifs/cached_dir.c index 8cad528a8722..20efc9e22761 100644 --- a/fs/cifs/cached_dir.c +++ b/fs/cifs/cached_dir.c @@ -253,8 +253,10 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, dentry = dget(cifs_sb->root); else { dentry = path_to_dentry(cifs_sb, path); - if (IS_ERR(dentry)) + if (IS_ERR(dentry)) { + rc = -ENOENT; goto oshr_free; + } } cfid->dentry = dentry; cfid->tcon = tcon; @@ -385,13 +387,13 @@ void invalidate_all_cached_dirs(struct cifs_tcon *tcon) list_move(&cfid->entry, &entry); cfids->num_entries--; cfid->is_open = false; + cfid->on_list = false; /* To prevent race with smb2_cached_lease_break() */ kref_get(&cfid->refcount); } spin_unlock(&cfids->cfid_list_lock); list_for_each_entry_safe(cfid, q, &entry, entry) { - cfid->on_list = false; list_del(&cfid->entry); cancel_work_sync(&cfid->lease_break); if (cfid->has_lease) { |