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-rw-r--r--kernel/printk/printk.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index f900dc9f6822..02d6b6d28796 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1857,10 +1857,16 @@ asmlinkage __visible int printk(const char *fmt, ...)
int r;
va_start(args, fmt);
- preempt_disable();
+
+ /*
+ * If a caller overrides the per_cpu printk_func, then it needs
+ * to disable preemption when calling printk(). Otherwise
+ * the printk_func should be set to the default. No need to
+ * disable preemption here.
+ */
vprintk_func = this_cpu_read(printk_func);
r = vprintk_func(fmt, args);
- preempt_enable();
+
va_end(args);
return r;