Author: mjg
Date: Thu Oct 19 00:46:15 2017
New Revision: 324735
URL: https://svnweb.freebsd.org/changeset/base/324735
Log:
execve: avoid one proc lock/unlock trip unless PTRACE_EXEC is set
MFC after: 1 week
Modified:
head/sys/kern/kern_exec.c
Modified: head/sys/kern/kern_exec.c
==============================================================================
--- head/sys/kern/kern_exec.c Thu Oct 19 00:38:14 2017 (r324734)
+++ head/sys/kern/kern_exec.c Thu Oct 19 00:46:15 2017 (r324735)
@@ -900,10 +900,12 @@ exec_fail_dealloc:
free(imgp->freepath, M_TEMP);
if (error == 0) {
- PROC_LOCK(p);
- if (p->p_ptevents & PTRACE_EXEC)
- td->td_dbgflags |= TDB_EXEC;
- PROC_UNLOCK(p);
+ if (p->p_ptevents & PTRACE_EXEC) {
+ PROC_LOCK(p);
+ if (p->p_ptevents & PTRACE_EXEC)
+ td->td_dbgflags |= TDB_EXEC;
+ PROC_UNLOCK(p);
+ }
/*
* Stop the process here if its stop event mask has
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