Fix several places to ignore processes that are not yet fully constructed.

MFC after:	1 week

5 files changed, 20 insertions, 6 deletions

diff --git a/sys/kern/kern_clock.c b/sys/kern/kern_clock.c
index 1754f7b..f3f49ca 100644
--- a/sys/kern/kern_clock.c
+++ b/sys/kern/kern_clock.c
@@ -201,6 +201,10 @@ deadlkres(void)
 		tryl = 0;
 		FOREACH_PROC_IN_SYSTEM(p) {
 			PROC_LOCK(p);
+			if (p->p_state == PRS_NEW) {
+				PROC_UNLOCK(p);
+				continue;
+			}
 			FOREACH_THREAD_IN_PROC(p, td) {
 
 				/*
diff --git a/sys/kern/kern_ktrace.c b/sys/kern/kern_ktrace.c
index 6c31cbf..5db5aee 100644
--- a/sys/kern/kern_ktrace.c
+++ b/sys/kern/kern_ktrace.c
@@ -882,7 +882,8 @@ ktrace(td, uap)
 		nfound = 0;
 		LIST_FOREACH(p, &pg->pg_members, p_pglist) {
 			PROC_LOCK(p);
-			if (p_cansee(td, p) != 0) {
+			if (p->p_state == PRS_NEW ||
+			    p_cansee(td, p) != 0) {
 				PROC_UNLOCK(p); 
 				continue;
 			}
diff --git a/sys/kern/kern_resource.c b/sys/kern/kern_resource.c
index fa7437d..1062703 100644
--- a/sys/kern/kern_resource.c
+++ b/sys/kern/kern_resource.c
@@ -129,7 +129,8 @@ getpriority(td, uap)
 		sx_sunlock(&proctree_lock);
 		LIST_FOREACH(p, &pg->pg_members, p_pglist) {
 			PROC_LOCK(p);
-			if (p_cansee(td, p) == 0) {
+			if (p->p_state == PRS_NORMAL &&
+			    p_cansee(td, p) == 0) {
 				if (p->p_nice < low)
 					low = p->p_nice;
 			}
@@ -215,7 +216,8 @@ setpriority(td, uap)
 		sx_sunlock(&proctree_lock);
 		LIST_FOREACH(p, &pg->pg_members, p_pglist) {
 			PROC_LOCK(p);
-			if (p_cansee(td, p) == 0) {
+			if (p->p_state == PRS_NORMAL &&
+			    p_cansee(td, p) == 0) {
 				error = donice(td, p, uap->prio);
 				found++;
 			}
@@ -230,7 +232,8 @@ setpriority(td, uap)
 		sx_slock(&allproc_lock);
 		FOREACH_PROC_IN_SYSTEM(p) {
 			PROC_LOCK(p);
-			if (p->p_ucred->cr_uid == uap->who &&
+			if (p->p_state == PRS_NORMAL &&
+			    p->p_ucred->cr_uid == uap->who &&
 			    p_cansee(td, p) == 0) {
 				error = donice(td, p, uap->prio);
 				found++;
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
index 0bea842..9c30dc2 100644
--- a/sys/kern/kern_sig.c
+++ b/sys/kern/kern_sig.c
@@ -1799,7 +1799,8 @@ pgsignal(struct pgrp *pgrp, int sig, int checkctty, ksiginfo_t *ksi)
 		PGRP_LOCK_ASSERT(pgrp, MA_OWNED);
 		LIST_FOREACH(p, &pgrp->pg_members, p_pglist) {
 			PROC_LOCK(p);
-			if (checkctty == 0 || p->p_flag & P_CONTROLT)
+			if (p->p_state == PRS_NORMAL &&
+			    (checkctty == 0 || p->p_flag & P_CONTROLT))
 				pksignal(p, sig, ksi);
 			PROC_UNLOCK(p);
 		}
@@ -3313,7 +3314,8 @@ pgsigio(sigiop, sig, checkctty)
 		PGRP_LOCK(sigio->sio_pgrp);
 		LIST_FOREACH(p, &sigio->sio_pgrp->pg_members, p_pglist) {
 			PROC_LOCK(p);
-			if (CANSIGIO(sigio->sio_ucred, p->p_ucred) &&
+			if (p->p_state == PRS_NORMAL &&
+			    CANSIGIO(sigio->sio_ucred, p->p_ucred) &&
 			    (checkctty == 0 || (p->p_flag & P_CONTROLT)))
 				psignal(p, sig);
 			PROC_UNLOCK(p);
diff --git a/sys/kern/sched_4bsd.c b/sys/kern/sched_4bsd.c
index c96d7b5..3129222 100644
--- a/sys/kern/sched_4bsd.c
+++ b/sys/kern/sched_4bsd.c
@@ -463,6 +463,10 @@ schedcpu(void)
 	sx_slock(&allproc_lock);
 	FOREACH_PROC_IN_SYSTEM(p) {
 		PROC_LOCK(p);
+		if (p->p_state == PRS_NEW) {
+			PROC_UNLOCK(p);
+			continue;
+		}
 		FOREACH_THREAD_IN_PROC(p, td) {
 			awake = 0;
 			thread_lock(td);