On Sat, May 04, 2019 at 11:37:48AM +0800, Jia-Ju Bai wrote: > In xhci_debugfs_create_slot(), kzalloc() can fail and > dev->debugfs_private will be NULL. > In xhci_debugfs_create_endpoint(), dev->debugfs_private is used without > any null-pointer check, and can cause a null pointer dereference. > > To fix this bug, a null-pointer check is added in > xhci_debugfs_create_endpoint(). > > This bug is found by a runtime fuzzing tool named FIZZER written by us. > > Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx> Very rare case, but nice fix. You should put "potential" in your subject line as this is something that no one should ever hit :) Anyway: Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
