{
pid_t vtid;
- vtid = task_pid_vnr(current);
+ /*
+ * nsproxy can be NULL when scheduled out of exit.
+ */
+ if (!current->nsproxy)
+ vtid = 0;
+ else
+ vtid = task_pid_vnr(current);
lib_ring_buffer_align_ctx(ctx, ltt_alignof(vtid));
chan->ops->event_write(ctx, &vtid, sizeof(vtid));
}
int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx)
{
struct lttng_ctx_field *field;
- int ret;
field = lttng_append_context(ctx);
if (!field)
- return ret;
+ return -ENOMEM;
+ if (lttng_find_context(*ctx, "vtid")) {
+ lttng_remove_context_field(ctx, field);
+ return -EEXIST;
+ }
field->event_field.name = "vtid";
field->event_field.type.atype = atype_integer;
field->event_field.type.u.basic.integer.size = sizeof(pid_t) * CHAR_BIT;