Merge tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel...

[platform/kernel/linux-starfive.git] / kernel / utsname_sysctl.c

diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index 7ffdd2c..064072c 100644 (file)
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -8,6 +8,7 @@
 #include <linux/export.h>
 #include <linux/uts.h>
 #include <linux/utsname.h>
+#include <linux/random.h>
 #include <linux/sysctl.h>
 #include <linux/wait.h>
 #include <linux/rwsem.h>
@@ -57,6 +58,7 @@ static int proc_do_uts_string(struct ctl_table *table, int write,
                 * theoretically be incorrect if there are two parallel writes
                 * at non-zero offsets to the same sysctl.
                 */
+               add_device_randomness(tmp_data, sizeof(tmp_data));
                down_write(&uts_sem);
                memcpy(get_uts(table), tmp_data, sizeof(tmp_data));
                up_write(&uts_sem);