Author: bdrewery
Date: Fri Aug 19 17:02:14 2016
New Revision: 304474
URL: https://svnweb.freebsd.org/changeset/base/304474
Log:
MFC r304008:
Avoid taking PROC_LOCK in syscalls if not being traced.
Modified:
stable/11/sys/dev/filemon/filemon.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/dev/filemon/filemon.c
==============================================================================
--- stable/11/sys/dev/filemon/filemon.c Fri Aug 19 17:02:05 2016
(r304473)
+++ stable/11/sys/dev/filemon/filemon.c Fri Aug 19 17:02:14 2016
(r304474)
@@ -137,6 +137,8 @@ filemon_proc_get(struct proc *p)
{
struct filemon *filemon;
+ if (p->p_filemon == NULL)
+ return (NULL);
PROC_LOCK(p);
filemon = filemon_acquire(p->p_filemon);
PROC_UNLOCK(p);
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