On Wed, Jul 31, 2019 at 05:58:48AM -0400, Suganath Prabu wrote: > From: Suganath Prabu S <suganath-prabu.subramani@xxxxxxxxxxxx> > > Although SAS3 & SAS3.5 IT HBA controllers support > 64-bit DMA addressing, as per hardware design, > if DMA able range contains all 64-bits set (0xFFFFFFFF-FFFFFFFF) then > it results in a firmware fault. > > e.g. SGE's start address is 0xFFFFFFFF-FFFF000 and > data length is 0x1000 bytes. when HBA tries to DMA the data > at 0xFFFFFFFF-FFFFFFFF location then HBA will > fault the firmware. > > Fix: > Driver will set 63-bit DMA mask to ensure the above address > will not be used. > > Cc: <stable@xxxxxxxxxxxxxxx> # 4.4.186, # 4.9.186 > Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@xxxxxxxxxxxx> > --- > Note: > This Patch is for stable kernel 4.4.186 and 4.9.186. > Original patch is applied to 5.3/scsi-fixes. > commit ID: df9a606184bfdb5ae3ca9d226184e9489f5c24f7 > We can't do anything with this for a stable release until it hits Linus's kernel tree. Please wait until then to send backports. thanks, greg k-h
