Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ff795447 authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Linus Torvalds
Browse files

[PATCH] fuse: fix bug in control filesystem mount 



The BUG in fuse_ctl_add_dentry() could be triggered if the control
filesystem was unmounted and mounted again while one or more fuse
filesystems were present.

The fix is to reset the dentry counter in fuse_ctl_kill_sb().

Bug reported by Florent Mertens.

Signed-off-by: default avatarMiklos Szeredi <miklos@szeredi.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 436d1654

fs/fuse/control.c

+4 −0
Original line number Diff line number Diff line
@@ -193,8 +193,12 @@ static int fuse_ctl_get_sb(struct file_system_type *fs_type, int flags, 


static void fuse_ctl_kill_sb(struct super_block *sb)

{

	struct fuse_conn *fc;



	mutex_lock(&fuse_mutex);

	fuse_control_sb = NULL;

	list_for_each_entry(fc, &fuse_conn_list, entry)

		fc->ctl_ndents = 0;

	mutex_unlock(&fuse_mutex);



	kill_litter_super(sb);