On Thu, Jan 03, 2019 at 01:49:55AM +0900, Tetsuo Handa wrote: > kernfs_node_dentry() calls lookup_one_len_unlocked() which involves > memory allocation, and memory allocation fault injection made > lookup_one_len_unlocked() fail, and thus kernfs_node_dentry() failed. > What's strange? So, kernfs_node_dentry() is called on the root kn, which should trigger "if (!kn->parent) return dentry" in kernfs_node_dentry(), so it shouldn't reach lookup_on_len_unlocked(). Oh I see. This is the namespaced mount path, so kn can be non-root. Will fix it. Thanks. -- tejun
