linux-stable/fs/fuse
ruanmeisi ef819c2f8e fuse: nlookup missing decrement in fuse_direntplus_link
commit b8bd342d50 upstream.

During our debugging of glusterfs, we found an Assertion failed error:
inode_lookup >= nlookup, which was caused by the nlookup value in the
kernel being greater than that in the FUSE file system.

The issue was introduced by fuse_direntplus_link, where in the function,
fuse_iget increments nlookup, and if d_splice_alias returns failure,
fuse_direntplus_link returns failure without decrementing nlookup
https://github.com/gluster/glusterfs/pull/4081

Signed-off-by: ruanmeisi <ruan.meisi@zte.com.cn>
Fixes: 0b05b18381 ("fuse: implement NFS-like readdirplus support")
Cc: <stable@vger.kernel.org> # v3.9
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-09-19 12:28:05 +02:00
..
acl.c vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
control.c fuse: Remove the control interface for virtio-fs 2022-07-21 16:06:19 +02:00
cuse.c cuse: simplify refcount 2021-04-14 10:40:58 +02:00
dax.c fuse: avoid unnecessary spinlock bump 2022-07-21 16:02:45 +02:00
dev.c mm: multi-gen LRU: groundwork 2022-09-26 19:46:09 -07:00
dir.c fuse: revalidate: don't invalidate if interrupted 2023-07-27 08:50:25 +02:00
file.c attr: use consistent sgid stripping checks 2023-03-03 11:52:25 +01:00
fuse_i.h fuse: implement ->tmpfile() 2022-09-24 07:00:00 +02:00
inode.c fuse: Apply flags2 only when userspace set the FUSE_INIT_EXT 2023-07-27 08:50:25 +02:00
ioctl.c fuse: ioctl: translate ENOSYS in outarg 2023-07-27 08:50:25 +02:00
Kconfig dax: remove CONFIG_DAX_DRIVER 2021-12-04 08:58:51 -08:00
Makefile fuse: move ioctl to separate source file 2021-04-12 15:04:30 +02:00
readdir.c fuse: nlookup missing decrement in fuse_direntplus_link 2023-09-19 12:28:05 +02:00
virtio_fs.c virtio_fs: Modify format for virtio_fs_direct_access 2022-07-26 10:38:58 +02:00
xattr.c fuse: move fuse_invalidate_attr() into fuse_update_ctime() 2021-10-22 17:03:01 +02:00