Commit 4e31dad1 authored Mar 22, 2016 by Liang Zhen Committed by Greg Kroah-Hartman Mar 28, 2016

staging: lustre: libcfs: test if data is NULL



Make sure data is not NULL otherwise we get an oops
when using the IOC_LIBCFS_MARK_DEBUG ioctl.

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5435
Reviewed-on: http://review.whamcloud.com/11313


Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 0d674c10

drivers/staging/lustre/lnet/libcfs/module.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -150,7 +150,7 @@ static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd,
	* Handled in arch/cfs_module.c		* Handled in arch/cfs_module.c
	*/		*/
	case IOC_LIBCFS_MARK_DEBUG:		case IOC_LIBCFS_MARK_DEBUG:
	if (!data->ioc_inlbuf1 \|\|		if (!data \|\| !data->ioc_inlbuf1 \|\|
	data->ioc_inlbuf1[data->ioc_inllen1 - 1] != '\0') {		data->ioc_inlbuf1[data->ioc_inllen1 - 1] != '\0') {
	err = -EINVAL;		err = -EINVAL;
	goto out;		goto out;