Author: rstone
Date: Sun Mar 1 04:39:07 2015
New Revision: 279474
URL: https://svnweb.freebsd.org/changeset/base/279474
Log:
MFC r277649:
vmspace_release() may sleep if the last reference is being released,
so add a WITNESS_WARN() to catch cases where it is called with a
non-sleepable lock held.
MFC after: 1 month
Sponsored by: Sandvine Inc.
Modified:
stable/10/sys/vm/vm_map.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/vm/vm_map.c
==============================================================================
--- stable/10/sys/vm/vm_map.c Sun Mar 1 04:36:20 2015 (r279473)
+++ stable/10/sys/vm/vm_map.c Sun Mar 1 04:39:07 2015 (r279474)
@@ -342,6 +342,9 @@ void
vmspace_free(struct vmspace *vm)
{
+ WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL,
+ "vmspace_free() called with non-sleepable lock held");
+
if (vm->vm_refcnt == 0)
panic("vmspace_free: attempt to free already freed vmspace");
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
