utils/irqbalance/patches/0002-post-190-fix-check-saveptr-NULL.patch

   1 From 522883505d3b02e3294f045f49007b61c00e2c31 Mon Sep 17 00:00:00 2001
   2 From: Chao Liu <liuchao173@huawei.com>
   3 Date: Wed, 8 Jun 2022 10:04:02 +0800
   4 Subject: [PATCH] check whether savedptr is NULL before invoking strlen
   5
   6 savedptr can be null in musl libc, so the strlen(NULL) will segfault
   7
   8 Signed-off-by: Chao Liu <liuchao173@huawei.com>
   9 ---
  10  procinterrupts.c | 2 +-
  11  1 file changed, 1 insertion(+), 1 deletion(-)
  12
  13 --- a/procinterrupts.c
  14 +++ b/procinterrupts.c
  15 @@ -178,7 +178,7 @@ void init_irq_class_and_type(char *saved
  16         }
  17
  18  #ifdef AARCH64
  19 -       if (strlen(savedptr) > 0) {
  20 +       if (savedptr && strlen(savedptr) > 0) {
  21                 snprintf(irq_fullname, PATH_MAX, "%s %s", last_token, savedptr);
  22                 tmp = strchr(irq_fullname, '\n');
  23                 if (tmp)