diff options
| -rw-r--r-- | ipc/shm.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/ipc/shm.c b/ipc/shm.c index 92d41e0b82e..aa053a24575 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -1288,8 +1288,7 @@ SYSCALL_DEFINE1(shmdt, char __user *, shmaddr) #else /* CONFIG_MMU */ /* under NOMMU conditions, the exact address to be destroyed must be * given */ - retval = -EINVAL; - if (vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) { + if (vma && vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) { do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start); retval = 0; } |