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Upgrade to 4.4.50-rt62
[kvmfornfv.git]
/
kernel
/
kernel
/
trace
/
trace_printk.c
diff --git
a/kernel/kernel/trace/trace_printk.c
b/kernel/kernel/trace/trace_printk.c
index
060df67
..
ad1d616
100644
(file)
--- a/
kernel/kernel/trace/trace_printk.c
+++ b/
kernel/kernel/trace/trace_printk.c
@@
-36,6
+36,10
@@
struct trace_bprintk_fmt {
static inline struct trace_bprintk_fmt *lookup_format(const char *fmt)
{
struct trace_bprintk_fmt *pos;
static inline struct trace_bprintk_fmt *lookup_format(const char *fmt)
{
struct trace_bprintk_fmt *pos;
+
+ if (!fmt)
+ return ERR_PTR(-EINVAL);
+
list_for_each_entry(pos, &trace_bprintk_fmt_list, list) {
if (!strcmp(pos->fmt, fmt))
return pos;
list_for_each_entry(pos, &trace_bprintk_fmt_list, list) {
if (!strcmp(pos->fmt, fmt))
return pos;
@@
-57,7
+61,8
@@
void hold_module_trace_bprintk_format(const char **start, const char **end)
for (iter = start; iter < end; iter++) {
struct trace_bprintk_fmt *tb_fmt = lookup_format(*iter);
if (tb_fmt) {
for (iter = start; iter < end; iter++) {
struct trace_bprintk_fmt *tb_fmt = lookup_format(*iter);
if (tb_fmt) {
- *iter = tb_fmt->fmt;
+ if (!IS_ERR(tb_fmt))
+ *iter = tb_fmt->fmt;
continue;
}
continue;
}
@@
-296,6
+301,9
@@
static int t_show(struct seq_file *m, void *v)
const char *str = *fmt;
int i;
const char *str = *fmt;
int i;
+ if (!*fmt)
+ return 0;
+
seq_printf(m, "0x%lx : \"", *(unsigned long *)fmt);
/*
seq_printf(m, "0x%lx : \"", *(unsigned long *)fmt);
/*