kernel/fork: assert no VMA readers during its destruction
Assert there are no holders of VMA lock for reading when it is about to be destroyed. Link: https://lkml.kernel.org/r/20230227173632.3292573-21-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
parent
98e51a2239
commit
f2e13784c1
|
@ -491,6 +491,9 @@ static void vm_area_free_rcu_cb(struct rcu_head *head)
|
|||
{
|
||||
struct vm_area_struct *vma = container_of(head, struct vm_area_struct,
|
||||
vm_rcu);
|
||||
|
||||
/* The vma should not be locked while being destroyed. */
|
||||
VM_BUG_ON_VMA(rwsem_is_locked(&vma->lock), vma);
|
||||
__vm_area_free(vma);
|
||||
}
|
||||
#endif
|
||||
|
|
Loading…
Reference in New Issue