diff options
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 80445ca0420b..caa23ca489bb 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -23,6 +23,7 @@ #include <linux/file.h> #include <linux/fdtable.h> #include <linux/iocontext.h> +#include <linux/kasan.h> #include <linux/key.h> #include <linux/binfmts.h> #include <linux/mman.h> @@ -174,6 +175,7 @@ static inline void free_thread_stack(unsigned long *stack) { struct page *page = virt_to_page(stack); + kasan_alloc_pages(page, THREAD_SIZE_ORDER); kaiser_unmap_thread_stack(stack); __free_kmem_pages(page, THREAD_SIZE_ORDER); } @@ -729,12 +731,16 @@ static inline void __mmput(struct mm_struct *mm) /* * Decrement the use count and release all resources for an mm. */ -void mmput(struct mm_struct *mm) +int mmput(struct mm_struct *mm) { + int mm_freed = 0; might_sleep(); - if (atomic_dec_and_test(&mm->mm_users)) + if (atomic_dec_and_test(&mm->mm_users)) { __mmput(mm); + mm_freed = 1; + } + return mm_freed; } EXPORT_SYMBOL_GPL(mmput); @@ -1713,6 +1719,7 @@ bad_fork_cleanup_audit: bad_fork_cleanup_perf: perf_event_free_task(p); bad_fork_cleanup_policy: + free_task_load_ptrs(p); #ifdef CONFIG_NUMA mpol_put(p->mempolicy); bad_fork_cleanup_threadgroup_lock: @@ -1744,7 +1751,7 @@ struct task_struct *fork_idle(int cpu) cpu_to_node(cpu)); if (!IS_ERR(task)) { init_idle_pids(task->pids); - init_idle(task, cpu); + init_idle(task, cpu, false); } return task; |