diff options
| -rw-r--r-- | io_uring/memmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/io_uring/memmap.c b/io_uring/memmap.c index a0f32a255fd1..d614824e17bd 100644 --- a/io_uring/memmap.c +++ b/io_uring/memmap.c @@ -204,11 +204,15 @@ static void *io_uring_validate_mmap_request(struct file *file, loff_t pgoff, /* Don't allow mmap if the ring was setup without it */ if (ctx->flags & IORING_SETUP_NO_MMAP) return ERR_PTR(-EINVAL); + if (!ctx->rings) + return ERR_PTR(-EFAULT); return ctx->rings; case IORING_OFF_SQES: /* Don't allow mmap if the ring was setup without it */ if (ctx->flags & IORING_SETUP_NO_MMAP) return ERR_PTR(-EINVAL); + if (!ctx->sq_sqes) + return ERR_PTR(-EFAULT); return ctx->sq_sqes; case IORING_OFF_PBUF_RING: { struct io_buffer_list *bl; |