On Fri, Nov 22, 2024 at 02:20:36PM +0530, Nilay Shroff wrote: > The nvme_execute_identify_ns_nvm function uses ZERO_PAGE > for copying SG list with all zeros. As ZERO_PAGE would not > necessarily return the virtual-address of the zero page, we > need to first convert the page address to kernel virtual- > address and then use it as source address for copying the > data to SG list with all zeros. > > Using return address of ZERO_PAGE(0) as source address for > copying data to SG list would fill the target buffer with > random value and causes the undesired side effect. This patch > implements the fix ensuring that we use virtual-address of the > zero page for copying all zeros to the SG list buffers. I wonder if using ZERO_PAGE() is simply a little too smart for it's own sake and it should just use kzalloc like a bunch of other identify implementation..
