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| author | Miklos Szeredi <mszeredi@redhat.com> | 2020-11-11 17:22:31 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-11-11 17:22:31 +0100 |
| commit | 66ab33bf6d4341574f88b511e856a73f6f2a921e (patch) | |
| tree | 4c50f69e6d2e0bdf1bae4de17d97a932dbfc439c /fs/fuse | |
| parent | 3993382bb3198cc5e263c3519418e716bd57b056 (diff) | |
| download | linux-66ab33bf6d4341574f88b511e856a73f6f2a921e.tar.bz2 | |
virtiofs fix leak in setup
This can be triggered for example by adding the "-omand" mount option,
which will be rejected and virtio_fs_fill_super() will return an error.
In such a case the allocations for fuse_conn and fuse_mount will leak due
to s_root not yet being set and so ->put_super() not being called.
Fixes: a62a8ef9d97d ("virtio-fs: add virtiofs filesystem")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/virtio_fs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 21a9e534417c..d2c0e58c6416 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -1464,6 +1464,8 @@ static int virtio_fs_get_tree(struct fs_context *fsc) if (!sb->s_root) { err = virtio_fs_fill_super(sb, fsc); if (err) { + fuse_mount_put(fm); + sb->s_fs_info = NULL; deactivate_locked_super(sb); return err; } |