Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 06:31:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

cifs: fix CIFS_IOC_GET_MNT_INFO oops

Browse Source 
An open directory may have a NULL private_data pointer prior to readdir.

Fixes: 0de1f4c6f6 ("Add way to query server fs info for smb3")
Cc: stable@vger.kernel.org
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
David Disseldorp 2017-05-04 00:41:13 +02:00 committed by Steve French
parent b704e70b7c
commit d8a6e505d6
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/cifs/ioctl.c
View File

@ -209,6 +209,8 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
rc = -EOPNOTSUPP; rc = -EOPNOTSUPP;
break; break;
case CIFS_IOC_GET_MNT_INFO: case CIFS_IOC_GET_MNT_INFO:
if (pSMBFile == NULL)
break;
tcon = tlink_tcon(pSMBFile->tlink); tcon = tlink_tcon(pSMBFile->tlink);
rc = smb_mnt_get_fsinfo(xid, tcon, (void __user *)arg); rc = smb_mnt_get_fsinfo(xid, tcon, (void __user *)arg);
break; break;