This looks buggy to me: drivers/iommu/tegra-smmu.c::smmu_iommu_domain_init()
spin_lock_irqsave(&tmp->lock, flags); <-- lock held, interrupts off
alloc_pdir(as = tmp)
devm_kzalloc(..., GFP_KERNEL); <-- potentially sleeping allocation
...
alloc_page(..., GFP_KERNEL | __GFP_DMA); <-- same here
thanks,
-chris
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
