svn commit: r225942 - head/sys/kern
Konstantin Belousov
kib at FreeBSD.org
Mon Oct 3 16:58:58 UTC 2011
Author: kib
Date: Mon Oct 3 16:58:58 2011
New Revision: 225942
URL: http://svn.freebsd.org/changeset/base/225942
Log:
Assert that exiting process does not return to usermode.
Reviewed by: avg, jhb
MFC after: 1 week
Modified:
head/sys/kern/subr_trap.c
Modified: head/sys/kern/subr_trap.c
==============================================================================
--- head/sys/kern/subr_trap.c Mon Oct 3 16:30:18 2011 (r225941)
+++ head/sys/kern/subr_trap.c Mon Oct 3 16:58:58 2011 (r225942)
@@ -99,6 +99,8 @@ userret(struct thread *td, struct trapfr
CTR3(KTR_SYSC, "userret: thread %p (pid %d, %s)", td, p->p_pid,
td->td_name);
+ KASSERT((p->p_flag & P_WEXIT) == 0,
+ ("Exiting process returns to usermode"));
#if 0
#ifdef DIAGNOSTIC
/* Check that we called signotify() enough. */
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