X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-context-vppid.c;h=f01b02068d67fa8ef1bdfc8e1a278f93b27cf618;hb=7b745a9662e0552f2715391147bc994ad17ae29c;hp=4abf784613afebf844f9be3ed92946519dbff31f;hpb=44252f0fd51fd4bf28926dcef525355bceb08c5f;p=lttng-modules.git

diff --git a/lttng-context-vppid.c b/lttng-context-vppid.c
index 4abf7846..f01b0206 100644
--- a/lttng-context-vppid.c
+++ b/lttng-context-vppid.c
@@ -31,10 +31,18 @@ void vppid_record(struct lttng_ctx_field *field,
 		  struct lib_ring_buffer_ctx *ctx,
 		  struct ltt_channel *chan)
 {
+	struct task_struct *parent;
 	pid_t vppid;
 
+	/*
+	 * nsproxy can be NULL when scheduled out of exit.
+	 */
 	rcu_read_lock();
-	vppid = task_tgid_vnr(current->real_parent);
+	parent = rcu_dereference(current->real_parent);
+	if (!parent->nsproxy)
+		vppid = 0;
+	else
+		vppid = task_tgid_vnr(parent);
 	rcu_read_unlock();
 	lib_ring_buffer_align_ctx(ctx, ltt_alignof(vppid));
 	chan->ops->event_write(ctx, &vppid, sizeof(vppid));