From: Vasily Averin <vvs@xxxxxxxxxxxxx> [ Upstream commit 0e9fb6f17ad5b386b75451328975a07d7d953c6d ] commit 963545357202 ("fuse: reduce allocation size for splice_write") changed size of bufs array, so BUG_ON which checks the index of the array shold also be fixed. [SzM: turn BUG_ON into WARN_ON] Fixes: 963545357202 ("fuse: reduce allocation size for splice_write") Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx> Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- fs/fuse/dev.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 97eec7522bf20..5c155437a455d 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -1977,8 +1977,9 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe, struct pipe_buffer *ibuf; struct pipe_buffer *obuf; - BUG_ON(nbuf >= pipe->ring_size); - BUG_ON(tail == head); + if (WARN_ON(nbuf >= count || tail == head)) + goto out_free; + ibuf = &pipe->bufs[tail & mask]; obuf = &bufs[nbuf]; -- 2.25.1