Author: bdrewery
Date: Fri Aug 19 19:19:17 2016
New Revision: 304495
URL: https://svnweb.freebsd.org/changeset/base/304495
Log:
MFS r304474:
MFC r304008:
Avoid taking PROC_LOCK in syscalls if not being traced.
Approved by: re (XXX)
Modified:
releng/11.0/sys/dev/filemon/filemon.c
Directory Properties:
releng/11.0/ (props changed)
Modified: releng/11.0/sys/dev/filemon/filemon.c
==============================================================================
--- releng/11.0/sys/dev/filemon/filemon.c Fri Aug 19 19:16:10 2016
(r304494)
+++ releng/11.0/sys/dev/filemon/filemon.c Fri Aug 19 19:19:17 2016
(r304495)
@@ -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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