LCOV - code coverage report
Current view: top level - include/linux - stackleak.h (source / functions) Hit Total Coverage
Test: combined.info Lines: 1 1 100.0 %
Date: 2022-03-28 15:32:58 Functions: 0 0 -
Branches: 1 2 50.0 %

           Branch data     Line data    Source code
       1                 :            : /* SPDX-License-Identifier: GPL-2.0 */
       2                 :            : #ifndef _LINUX_STACKLEAK_H
       3                 :            : #define _LINUX_STACKLEAK_H
       4                 :            : 
       5                 :            : #include <linux/sched.h>
       6                 :            : #include <linux/sched/task_stack.h>
       7                 :            : 
       8                 :            : /*
       9                 :            :  * Check that the poison value points to the unused hole in the
      10                 :            :  * virtual memory map for your platform.
      11                 :            :  */
      12                 :            : #define STACKLEAK_POISON -0xBEEF
      13                 :            : #define STACKLEAK_SEARCH_DEPTH 128
      14                 :            : 
      15                 :            : #ifdef CONFIG_GCC_PLUGIN_STACKLEAK
      16                 :            : #include <asm/stacktrace.h>
      17                 :            : 
      18                 :            : static inline void stackleak_task_init(struct task_struct *t)
      19                 :            : {
      20                 :            :         t->lowest_stack = (unsigned long)end_of_stack(t) + sizeof(unsigned long);
      21                 :            : # ifdef CONFIG_STACKLEAK_METRICS
      22                 :            :         t->prev_lowest_stack = t->lowest_stack;
      23                 :            : # endif
      24                 :            : }
      25                 :            : 
      26                 :            : #ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
      27                 :            : int stack_erasing_sysctl(struct ctl_table *table, int write,
      28                 :            :                         void __user *buffer, size_t *lenp, loff_t *ppos);
      29                 :            : #endif
      30                 :            : 
      31                 :            : #else /* !CONFIG_GCC_PLUGIN_STACKLEAK */
      32         [ +  - ]:      13132 : static inline void stackleak_task_init(struct task_struct *t) { }
      33                 :            : #endif
      34                 :            : 
      35                 :            : #endif

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