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| author | Vasily Averin <vvs@virtuozzo.com> | 2019-08-19 09:53:50 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-04-20 17:01:34 +0200 |
| commit | 0e9fb6f17ad5b386b75451328975a07d7d953c6d (patch) | |
| tree | 06bbac19b2f8577bd738734cd63d49e255e8e2cb /fs/fuse | |
| parent | a5d8422cc9598b11054faf34772d9ce68ae204fd (diff) | |
| download | linux-0e9fb6f17ad5b386b75451328975a07d7d953c6d.tar.bz2 | |
fuse: BUG_ON correction in fuse_dev_splice_write()
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@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/dev.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 97eec7522bf2..5c155437a455 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]; |