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Diffstat (limited to 'drivers/misc/lkdtm_bugs.c')
-rw-r--r--drivers/misc/lkdtm_bugs.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/misc/lkdtm_bugs.c b/drivers/misc/lkdtm_bugs.c
index cba0837aee2e..e3f4cd8876b5 100644
--- a/drivers/misc/lkdtm_bugs.c
+++ b/drivers/misc/lkdtm_bugs.c
@@ -81,12 +81,17 @@ void lkdtm_OVERFLOW(void)
81 (void) recursive_loop(recur_count); 81 (void) recursive_loop(recur_count);
82} 82}
83 83
84static noinline void __lkdtm_CORRUPT_STACK(void *stack)
85{
86 memset(stack, 'a', 64);
87}
88
84noinline void lkdtm_CORRUPT_STACK(void) 89noinline void lkdtm_CORRUPT_STACK(void)
85{ 90{
86 /* Use default char array length that triggers stack protection. */ 91 /* Use default char array length that triggers stack protection. */
87 char data[8]; 92 char data[8];
93 __lkdtm_CORRUPT_STACK(&data);
88 94
89 memset((void *)data, 'a', 64);
90 pr_info("Corrupted stack with '%16s'...\n", data); 95 pr_info("Corrupted stack with '%16s'...\n", data);
91} 96}
92 97