diff options
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index f7e3c2721238..7aa7dec289da 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); @@ -1731,6 +1737,7 @@ 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: |