| Message ID | 20250218091411.MMS3wBN9@linutronix.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | dma: kmsan: Export kmsan_handle_dma() for modules. | expand |
On Tue, Feb 18, 2025 at 10:14 AM Sebastian Andrzej Siewior <bigeasy@linutronix.de> 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@intel.com> > Closes: https://lore.kernel.org/oe-kbuild-all/202502150634.qjxwSeJR-lkp@intel.com/ > Fixes: 7ade4f10779cb ("dma: kmsan: unpoison DMA mappings") > Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Alexander Potapenko <glider@google.com>
On Tue, 18 Feb 2025 10:14:11 +0100 Sebastian Andrzej Siewior <bigeasy@linutronix.de> 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@intel.com> > Closes: https://lore.kernel.org/oe-kbuild-all/202502150634.qjxwSeJR-lkp@intel.com/ > 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.
diff --git a/mm/kmsan/hooks.c b/mm/kmsan/hooks.c index 3ea50f09311fd..3df45c25c1f62 100644 --- a/mm/kmsan/hooks.c +++ b/mm/kmsan/hooks.c @@ -357,6 +357,7 @@ void kmsan_handle_dma(struct page *page, size_t offset, size_t size, size -= to_go; } } +EXPORT_SYMBOL_GPL(kmsan_handle_dma); void kmsan_handle_dma_sg(struct scatterlist *sg, int nents, enum dma_data_direction dir)
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@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202502150634.qjxwSeJR-lkp@intel.com/ Fixes: 7ade4f10779cb ("dma: kmsan: unpoison DMA mappings") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- mm/kmsan/hooks.c | 1 + 1 file changed, 1 insertion(+)