Linus, please apply before 2.6.20. Thanks.
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 <[email protected]>
---
Index: linux/fs/fuse/control.c
===================================================================
--- linux.orig/fs/fuse/control.c 2007-01-29 20:40:50.000000000 +0100
+++ linux/fs/fuse/control.c 2007-01-29 20:40:52.000000000 +0100
@@ -193,8 +193,12 @@ static int fuse_ctl_get_sb(struct file_s
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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