Commit ff795447 authored Jan 29, 2007 by Miklos Szeredi Committed by Linus Torvalds Jan 30, 2007

[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: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus 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);

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