diff options
| author | Pavel Shilovsky <piastryyy@gmail.com> | 2011-07-25 17:59:10 +0400 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-07-26 02:06:40 +0400 |
| commit | f5bc1e755d23d022bf948904386337fc3e5e29a8 (patch) | |
| tree | 8c65823f6076c2bf25e11f5756abe704deca7708 /fs/cifs/smbencrypt.c | |
| parent | e010a5ef95b8b6a12b74b548578f7dcf93564347 (diff) | |
| download | linux-f5bc1e755d23d022bf948904386337fc3e5e29a8.tar.xz | |
CIFS: Fix oops while mounting with prefixpath
commit fec11dd9a0109fe52fd631e5c510778d6cbff6cc caused
a regression when we have already mounted //server/share/a
and want to mount //server/share/a/b.
The problem is that lookup_one_len calls __lookup_hash
with nd pointer as NULL. Then __lookup_hash calls
do_revalidate in the case when dentry exists and we end
up with NULL pointer deference in cifs_d_revalidate:
if (nd->flags & LOOKUP_RCU)
return -ECHILD;
Fix this by checking nd for NULL.
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Shirish Pargaonkar <shirishp@us.ibm.com>
CC: Stable <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/smbencrypt.c')
0 files changed, 0 insertions, 0 deletions