diff options
Diffstat (limited to 'kernel/stackleak.c')
| -rw-r--r-- | kernel/stackleak.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/kernel/stackleak.c b/kernel/stackleak.c index ddb5a7f48d69..753eab797a04 100644 --- a/kernel/stackleak.c +++ b/kernel/stackleak.c @@ -70,7 +70,7 @@ late_initcall(stackleak_sysctls_init); #define skip_erasing() false #endif /* CONFIG_STACKLEAK_RUNTIME_DISABLE */ -asmlinkage void noinstr stackleak_erase(void) +static __always_inline void __stackleak_erase(void) { /* It would be nice not to have 'kstack_ptr' and 'boundary' on stack */ unsigned long kstack_ptr = current->lowest_stack; @@ -78,9 +78,6 @@ asmlinkage void noinstr stackleak_erase(void) unsigned int poison_count = 0; const unsigned int depth = STACKLEAK_SEARCH_DEPTH / sizeof(unsigned long); - if (skip_erasing()) - return; - /* Check that 'lowest_stack' value is sane */ if (unlikely(kstack_ptr - boundary >= THREAD_SIZE)) kstack_ptr = boundary; @@ -125,6 +122,14 @@ asmlinkage void noinstr stackleak_erase(void) current->lowest_stack = current_top_of_stack() - THREAD_SIZE/64; } +asmlinkage void noinstr stackleak_erase(void) +{ + if (skip_erasing()) + return; + + __stackleak_erase(); +} + void __used __no_caller_saved_registers noinstr stackleak_track_stack(void) { unsigned long sp = current_stack_pointer; |