diff options
Diffstat (limited to 'kernel/stackleak.c')
| -rw-r--r-- | kernel/stackleak.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/kernel/stackleak.c b/kernel/stackleak.c index ba346d46218f..afd54b8e10b8 100644 --- a/kernel/stackleak.c +++ b/kernel/stackleak.c @@ -74,20 +74,10 @@ static __always_inline void __stackleak_erase(void) { const unsigned long task_stack_low = stackleak_task_low_bound(current); const unsigned long task_stack_high = stackleak_task_high_bound(current); - unsigned long erase_low = current->lowest_stack; - unsigned long erase_high; - unsigned int poison_count = 0; - const unsigned int depth = STACKLEAK_SEARCH_DEPTH / sizeof(unsigned long); - - /* Search for the poison value in the kernel stack */ - while (erase_low > task_stack_low && poison_count <= depth) { - if (*(unsigned long *)erase_low == STACKLEAK_POISON) - poison_count++; - else - poison_count = 0; - - erase_low -= sizeof(unsigned long); - } + unsigned long erase_low, erase_high; + + erase_low = stackleak_find_top_of_poison(task_stack_low, + current->lowest_stack); #ifdef CONFIG_STACKLEAK_METRICS current->prev_lowest_stack = erase_low; |