svn commit: r298330 - head/sys/kern

[Conrad E. Meyer]

Author: cem
Date: Wed Apr 20 02:09:38 2016
New Revision: 298330
URL: https://svnweb.freebsd.org/changeset/base/298330

Log:
  kern_rctl: Fix resource leak in error path
  
  Ordinarily, rctl_write_outbuf frees 'sb'.  However, if we are in low memory
  conditions we skip past the rctl_write_outbuf.  In that case, free 'sb'.
  
  Reported by:	Coverity
  CID:		1338539
  Sponsored by:	EMC / Isilon Storage Division

Modified:
  head/sys/kern/kern_rctl.c

Modified: head/sys/kern/kern_rctl.c
==============================================================================
--- head/sys/kern/kern_rctl.c	Wed Apr 20 02:01:45 2016	(r298329)
+++ head/sys/kern/kern_rctl.c	Wed Apr 20 02:09:38 2016	(r298330)
@@ -1866,6 +1866,7 @@ sys_rctl_get_limits(struct thread *td, s
 	RCTL_RUNLOCK();
 	if (sbuf_error(sb) == ENOMEM) {
 		error = ERANGE;
+		sbuf_delete(sb);
 		goto out;
 	}