Quoting Mark Rutland (2018-07-20 01:31:02) > In-Reply-To: <[email protected]> > > On Fri, Jul 20, 2018 at 09:53:21AM +0200, Paul Menzel wrote: > > Dear Linux folks, > > Hi, > > > Enabling the undefined behavior sanitizer and building GNU/Linux 4.18-rc5+ > > (with some unrelated commits) with GCC 8.1.0 from Debian Sid/unstable, the > > warning below is shown. > > > > > [ 0.958688] > > > ================================================================================ > > > [ 0.959029] UBSAN: Undefined behaviour in lib/radix-tree.c:123:14 > > That's in get_slot_offset(), and I think this is addressed by the patch [1] I > previously sent. > > There are at least a couple of instances in the radix tree code, and I had > intended to address them together, but I haven't had the chance over the last > couple of weeks. > > I will try to get back to that soon.
Do you have that reworked patch lying around somewhere? I ran into an ubsan error in radix-tree today and patch [1] fixes things. > [1] https://lkml.kernel.org/r/[email protected]
