diff --git a/mm/memory.c b/mm/memory.c index ad4bf1a1a0efb4d41ad2b186c1d38af0a7625b64..53bd595798617a2bcab2f483b93bacb0464943cb 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4344,7 +4344,9 @@ int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm, void *old_buf = buf; int write = gup_flags & FOLL_WRITE; - down_read(&mm->mmap_sem); + if (down_read_killable(&mm->mmap_sem)) + return 0; + /* ignore errors, just check how much was successfully transferred */ while (len) { int bytes, ret, offset; diff --git a/mm/nommu.c b/mm/nommu.c index 07165ad2e548d7c0cafecc1056c525df1ad5be44..eb3e2e558da13d85937ee5bd547ffd591708bf02 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1704,7 +1704,8 @@ int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm, struct vm_area_struct *vma; int write = gup_flags & FOLL_WRITE; - down_read(&mm->mmap_sem); + if (down_read_killable(&mm->mmap_sem)) + return 0; /* the access must start within one of the target process's mappings */ vma = find_vma(mm, addr);