diff options
Diffstat (limited to 'fs/pipe.c')
| -rw-r--r-- | fs/pipe.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/pipe.c b/fs/pipe.c index 4d0799e4e719..88e81f84e3ea 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -1271,6 +1271,10 @@ int pipe_resize_ring(struct pipe_inode_info *pipe, unsigned int nr_slots) struct pipe_buffer *bufs; unsigned int head, tail, mask, n; + /* nr_slots larger than limits of pipe->{head,tail} */ + if (unlikely(nr_slots > (pipe_index_t)-1u)) + return -EINVAL; + bufs = kcalloc(nr_slots, sizeof(*bufs), GFP_KERNEL_ACCOUNT | __GFP_NOWARN); if (unlikely(!bufs)) |