On Thu, Jun 22, 2017 at 12:31:35AM +0100, Chris Wilson wrote: > Quoting Tejun Heo (2017-06-13 14:58:49) > > Cc'ing David Airlie. > > > > This is from drm driver calling in idr_replace() w/ a negative id. > > Probably a silly bug in error handling path? > > No, this is the validation of an invalid userspace handle. The drm ABI > for handles is supposed to be a full u32 range with 0 reserved for an > invalid handle (constrained by the idr_alloc ofc). The WARN was > introduced by 0a835c4f090a.
Matthew, did idr lost some of its range while being reimplemented using radix tree? Thanks. -- tejun
