linux-stable/fs/fuse
Hangyu Hua ce5a6df21a fuse: dax: set fc->dax to NULL in fuse_dax_conn_free()
commit 7f8ed28d14 upstream.

fuse_dax_conn_free() will be called when fuse_fill_super_common() fails
after fuse_dax_conn_alloc(). Then deactivate_locked_super() in
virtio_fs_get_tree() will call virtio_kill_sb() to release the discarded
superblock. This will call fuse_dax_conn_free() again in fuse_conn_put(),
resulting in a possible double free.

Fixes: 1dd539577c ("virtiofs: add a mount option to enable dax")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Cc: <stable@vger.kernel.org> # v5.10
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-20 17:01:52 +01:00
..
acl.c fs.idmapped.v6.3 2023-02-20 11:53:11 -08:00
control.c fuse: convert to ctime accessor functions 2023-07-24 10:29:59 +02:00
cuse.c driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
dax.c fuse: dax: set fc->dax to NULL in fuse_dax_conn_free() 2023-12-20 17:01:52 +01:00
dev.c fuse_dev_ioctl(): switch to fdget() 2023-04-20 22:55:35 -04:00
dir.c fuse update for 6.6 2023-09-05 12:45:55 -07:00
file.c fuse: disable FOPEN_PARALLEL_DIRECT_WRITES with FUSE_DIRECT_IO_ALLOW_MMAP 2023-12-20 17:01:51 +01:00
fuse_i.h fuse: share lookup state between submount and its parent 2023-12-20 17:01:51 +01:00
inode.c fuse: share lookup state between submount and its parent 2023-12-20 17:01:51 +01:00
ioctl.c fuse: ioctl: translate ENOSYS in outarg 2023-06-21 11:17:36 +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: cache btime 2023-08-21 12:14:59 +02:00
virtio_fs.c dax: enable dax fault handler to report VM_FAULT_HWPOISON 2023-06-26 07:54:23 -06:00
xattr.c fs.idmapped.v6.3 2023-02-20 11:53:11 -08:00