Re: [RESEND][PATCH] iommu/vt-d: fix shift-out-of-bounds in bug checking

2018-05-02 Thread Lu Baolu
Hi, On 04/28/2018 02:39 PM, changbin...@intel.com wrote: > From: Changbin Du > > It allows to flush more than 4GB of device TLBs. So the mask should be > 64bit wide. UBSAN captured this fault as below. > > [3.760024] > =

[RESEND][PATCH] iommu/vt-d: fix shift-out-of-bounds in bug checking

2018-04-27 Thread changbin . du
From: Changbin Du It allows to flush more than 4GB of device TLBs. So the mask should be 64bit wide. UBSAN captured this fault as below. [3.760024] [3.768440] UBSAN: Undefined behaviour in drivers/iommu/dma