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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _LINUX_STACKLEAK_H
- #define _LINUX_STACKLEAK_H
- #include <linux/sched.h>
- #include <linux/sched/task_stack.h>
- /*
- * Check that the poison value points to the unused hole in the
- * virtual memory map for your platform.
- */
- #define STACKLEAK_POISON -0xBEEF
- #define STACKLEAK_SEARCH_DEPTH 128
- #ifdef CONFIG_GCC_PLUGIN_STACKLEAK
- #include <asm/stacktrace.h>
- static inline void stackleak_task_init(struct task_struct *t)
- {
- t->lowest_stack = (unsigned long)end_of_stack(t) + sizeof(unsigned long);
- # ifdef CONFIG_STACKLEAK_METRICS
- t->prev_lowest_stack = t->lowest_stack;
- # endif
- }
- #ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
- int stack_erasing_sysctl(struct ctl_table *table, int write,
- void *buffer, size_t *lenp, loff_t *ppos);
- #endif
- #else /* !CONFIG_GCC_PLUGIN_STACKLEAK */
- static inline void stackleak_task_init(struct task_struct *t) { }
- #endif
- #endif
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