In the Linux kernel, the following vulnerability has been resolved: net: arc: fix the device for dma_map_single/dma_unmap_single The ndev->dev and pdev->dev aren't the same device, use ndev->dev.parent which has dma_mask, ndev->dev.parent is just pdev->dev. Or it would cause the following issue: [ 39.933526] ------------[ cut here ]------------ [ 39.938414] WARNING: CPU: 1 PID: 501 at kernel/dma/mapping.c:149 dma_map_page_attrs+0x90/0x1f8
https://git.kernel.org/stable/c/fd4e062fbc07156f8e9d73212d347c744572677e
https://git.kernel.org/stable/c/cd4706d9ac0d8d3bab8dc9e50cc1187f6cfa43dd
https://git.kernel.org/stable/c/8ed7a4a39c3f7cd9655af867e878fda512ae67ad
https://git.kernel.org/stable/c/71803c1dfa29e0d13b99e48fda11107cc8caebc7
https://git.kernel.org/stable/c/3898393b5483c8aa2efd7cb13aa70e22078ab022
https://git.kernel.org/stable/c/30606ea3fae57f8e9f2467415389e988e3c53a18