On Tue, 18 Feb 2025 10:14:11 +0100 Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote: > kmsan_handle_dma() is used by virtio_ring() which can be built as a > module. kmsan_handle_dma() needs to be exported otherwise building the > virtio_ring fails. > > Export kmsan_handle_dma for modules. > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > Closes: https://lore.kernel.org/oe-kbuild-all/202502150634.qjxwSeJR-lkp@xxxxxxxxx/ > Fixes: 7ade4f10779cb ("dma: kmsan: unpoison DMA mappings") It's strange that this took a few years to be noticed. Thanks, I added cc:stable to this.