From: Shirish Pargaonkar <[email protected]>
Check for NULL direntry before assigning fields off of it.
Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail>
---
fs/cifs/dir.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 81914df..e9ea4c8 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -53,14 +53,16 @@ build_path_from_dentry(struct dentry *direntry)
int dfsplen;
char *full_path;
char dirsep;
- struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
- struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
+ struct cifs_sb_info *cifs_sb;
+ struct cifs_tcon *tcon;
if (direntry == NULL)
return NULL; /* not much we can do if dentry is freed and
we need to reopen the file after it was closed implicitly
when the server crashed */
+ cifs_sb = CIFS_SB(direntry->d_sb);
+ tcon = cifs_sb_master_tcon(cifs_sb);
dirsep = CIFS_DIR_SEP(cifs_sb);
if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
--
1.6.0.2
--
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