diff options
-rw-r--r-- | kernel/printk/printk.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 5af2b8bc88f0..9b896e7a50a9 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c | |||
@@ -1859,10 +1859,16 @@ asmlinkage __visible int printk(const char *fmt, ...) | |||
1859 | int r; | 1859 | int r; |
1860 | 1860 | ||
1861 | va_start(args, fmt); | 1861 | va_start(args, fmt); |
1862 | preempt_disable(); | 1862 | |
1863 | /* | ||
1864 | * If a caller overrides the per_cpu printk_func, then it needs | ||
1865 | * to disable preemption when calling printk(). Otherwise | ||
1866 | * the printk_func should be set to the default. No need to | ||
1867 | * disable preemption here. | ||
1868 | */ | ||
1863 | vprintk_func = this_cpu_read(printk_func); | 1869 | vprintk_func = this_cpu_read(printk_func); |
1864 | r = vprintk_func(fmt, args); | 1870 | r = vprintk_func(fmt, args); |
1865 | preempt_enable(); | 1871 | |
1866 | va_end(args); | 1872 | va_end(args); |
1867 | 1873 | ||
1868 | return r; | 1874 | return r; |