Protect p_flag with the proc lock.

3 files changed, 18 insertions, 3 deletions

diff --git a/sys/miscfs/procfs/procfs_dbregs.c b/sys/miscfs/procfs/procfs_dbregs.c
index c7ad130..6d35da0 100644
--- a/sys/miscfs/procfs/procfs_dbregs.c
+++ b/sys/miscfs/procfs/procfs_dbregs.c
@@ -96,5 +96,10 @@ int
 procfs_validdbregs(p)
 	struct proc *p;
 {
-	return ((p->p_flag & P_SYSTEM) == 0);
+	int valid;
+
+	PROC_LOCK(p);
+	valid = (p->p_flag & P_SYSTEM) == 0;
+	PROC_UNLOCK(p);
+	return (valid);
 }
diff --git a/sys/miscfs/procfs/procfs_fpregs.c b/sys/miscfs/procfs/procfs_fpregs.c
index 69dd527..493939c 100644
--- a/sys/miscfs/procfs/procfs_fpregs.c
+++ b/sys/miscfs/procfs/procfs_fpregs.c
@@ -93,5 +93,10 @@ int
 procfs_validfpregs(p)
 	struct proc *p;
 {
-	return ((p->p_flag & P_SYSTEM) == 0);
+	int valid;
+
+	PROC_LOCK(p);
+	valid = (p->p_flag & P_SYSTEM) == 0;
+	PROC_UNLOCK(p);
+	return (valid);
 }
diff --git a/sys/miscfs/procfs/procfs_regs.c b/sys/miscfs/procfs/procfs_regs.c
index c2b6d4b..d1dd0bc 100644
--- a/sys/miscfs/procfs/procfs_regs.c
+++ b/sys/miscfs/procfs/procfs_regs.c
@@ -94,5 +94,10 @@ int
 procfs_validregs(p)
 	struct proc *p;
 {
-	return ((p->p_flag & P_SYSTEM) == 0);
+	int valid;
+
+	PROC_LOCK(p);
+	valid = (p->p_flag & P_SYSTEM) == 0;
+	PROC_UNLOCK(p);
+	return (valid);
 }