fs/9p: avoid accessing utsname after namespace has been torn down

[~andy/linux] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 6e6a1c11b3e5939bda764882801a5dd28e904f30..66635c80a813e876d3a3529ed13ce410ab987c4e 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -365,8 +365,6 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
        mm->locked_vm = 0;
        mm->mmap = NULL;
        mm->mmap_cache = NULL;
-       mm->free_area_cache = oldmm->mmap_base;
-       mm->cached_hole_size = ~0UL;
        mm->map_count = 0;
        cpumask_clear(mm_cpumask(mm));
        mm->mm_rb = RB_ROOT;
@@ -540,8 +538,6 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p)
        mm->nr_ptes = 0;
        memset(&mm->rss_stat, 0, sizeof(mm->rss_stat));
        spin_lock_init(&mm->page_table_lock);
-       mm->free_area_cache = TASK_UNMAPPED_BASE;
-       mm->cached_hole_size = ~0UL;
        mm_init_aio(mm);
        mm_init_owner(mm, p);