[LU-7998] Resource acquired to fd may be lost in mount_utils.c

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.9.0
• Labels: kw
• Severity: 3
• Assignee: Dmitry Eremin (Inactive)
• Reporter: Dmitry Eremin (Inactive)

Description

364			for (i = 0; i < MAX_LOOP_DEVICES; i++) {
365				char cmd[PATH_MAX];
366				int cmdsz = sizeof(cmd);
367		 
368		#ifdef HAVE_LOOP_CTL_GET_FREE
369				ret = open("/dev/loop-control", O_RDWR);
370				if (ret < 0) {...}
374				/* find or allocate a free loop device to use */
375				i = ioctl(ret, LOOP_CTL_GET_FREE);
376				if (i < 0) {
377					fprintf(stderr, "%s: access loop control error\n", progname);
378					return EACCES;
379				}