Patch "cifs: fix CIFS_IOC_GET_MNT_INFO oops" has been added to the 4.11-stable tree

This is a note to let you know that I've just added the patch titled

cifs: fix CIFS_IOC_GET_MNT_INFO oops

to the 4.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
cifs-fix-cifs_ioc_get_mnt_info-oops.patch
and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: David Disseldorp <[email protected]>
Date: Thu, 4 May 2017 00:41:13 +0200
Subject: cifs: fix CIFS_IOC_GET_MNT_INFO oops

From: David Disseldorp <[email protected]>

commit d8a6e505d6bba2250852fbc1c1c86fe68aaf9af3 upstream.

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

---
 fs/cifs/ioctl.c |    2 ++
 1 file changed, 2 insertions(+)

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

Patches currently in stable-queue which might be from [email protected] are

queue-4.11/cifs-fix-cifs_ioc_get_mnt_info-oops.patch queue-4.11/target-fileio-fix-zero-length-read-and-write-handling.patch queue-4.11/cifs-fix-cifs_enumerate_snapshots-oops.patch queue-4.11/cifs-fix-leak-in-fsctl_enum_snaps-response-handling.patch