svn commit: r349617 - head/sys/kern

[John Baldwin]

Author: jhb
Date: Tue Jul  2 22:58:21 2019
New Revision: 349617
URL: https://svnweb.freebsd.org/changeset/base/349617

Log:
  Invoke ext_free function when freeing an unmapped mbuf.
  
  Fix a mis-merge when extracting the unmapped mbuf changes from
  Netflix's in-kernel TLS changes where the call to the function that
  freed the backing pages from an unmapped mbuf was missed.
  
  Sponsored by:	Chelsio Communications

Modified:
  head/sys/kern/kern_mbuf.c

Modified: head/sys/kern/kern_mbuf.c
==============================================================================
--- head/sys/kern/kern_mbuf.c	Tue Jul  2 22:57:24 2019	(r349616)
+++ head/sys/kern/kern_mbuf.c	Tue Jul  2 22:58:21 2019	(r349617)
@@ -1282,6 +1282,9 @@ mb_free_ext(struct mbuf *m)
 			uma_zfree(zone_mbuf, mref);
 			break;
 		case EXT_PGS:
+			KASSERT(mref->m_ext.ext_free != NULL,
+			    ("%s: ext_free not set", __func__));
+			mref->m_ext.ext_free(mref);
 			uma_zfree(zone_extpgs, mref->m_ext.ext_pgs);
 			uma_zfree(zone_mbuf, mref);
 			break;