On Mon, Feb 05, 2024 at 05:57:58PM +0100, Alexander Lobakin wrote: > From: Chris Leech <cleech@xxxxxxxxxx> > Date: Thu, 1 Feb 2024 15:33:56 -0800 > > > During bnx2i iSCSI testing we ran into page refcounting issues in the > > uio mmaps exported from cnic to the iscsiuio process, and bisected back > > to the removal of the __GFP_COMP flag from dma_alloc_coherent calls. > > IIRC Jakub mentioned some time ago that he doesn't want to see > third-party userspace <-> kernel space communication in the networking > drivers, to me this looks exactly like that :z This isn't something anyone likes, but it's an interface that's been in the kernel and in use since 2009. I'm trying to see if it can be fixed "enough" to keep existing users functioning. If not, maybe the cnic interface and the stacking protocol drivers (bnx2i/bnx2fc) should be marked as broken. - Chris
