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Commit d8a6e505 authored by David Disseldorp's avatar David Disseldorp Committed by Steve French
Browse files

cifs: fix CIFS_IOC_GET_MNT_INFO oops 



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

Fixes: 0de1f4c6 ("Add way to query server fs info for smb3")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDavid Disseldorp <ddiss@suse.de>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent b704e70b

fs/cifs/ioctl.c

+2 −0
Original line number Diff line number Diff line
@@ -209,6 +209,8 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) 
				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;