svn commit: r353935 - head/sys/dev/ksyms

[Mark Johnston]

Author: markj
Date: Wed Oct 23 16:53:37 2019
New Revision: 353935
URL: https://svnweb.freebsd.org/changeset/base/353935

Log:
  Set OBJ_NOSPLIT on the ksyms(4) VM object.
  
  The object does not provide anonymous memory.
  
  Reported by:	kib
  Reviewed by:	kib
  MFC after:	3 days
  Sponsored by:	The FreeBSD Foundation
  Differential Revision:	https://reviews.freebsd.org/D22123

Modified:
  head/sys/dev/ksyms/ksyms.c

Modified: head/sys/dev/ksyms/ksyms.c
==============================================================================
--- head/sys/dev/ksyms/ksyms.c	Wed Oct 23 16:48:22 2019	(r353934)
+++ head/sys/dev/ksyms/ksyms.c	Wed Oct 23 16:53:37 2019	(r353935)
@@ -404,6 +404,7 @@ ksyms_open(struct cdev *dev, int flags, int fmt __unus
 {
 	struct tsizes ts;
 	struct ksyms_softc *sc;
+	vm_object_t object;
 	vm_size_t elfsz;
 	int error, try;
 
@@ -441,8 +442,10 @@ ksyms_open(struct cdev *dev, int flags, int fmt __unus
 		ksyms_size_calc(&ts);
 		elfsz = sizeof(struct ksyms_hdr) + ts.ts_symsz + ts.ts_strsz;
 
-		sc->sc_obj = vm_object_allocate(OBJT_DEFAULT,
+		object = vm_object_allocate(OBJT_DEFAULT,
 		    OFF_TO_IDX(round_page(elfsz)));
+		vm_object_set_flag(object, OBJ_NOSPLIT);
+		sc->sc_obj = object;
 		sc->sc_objsz = elfsz;
 
 		error = ksyms_snapshot(sc, &ts);