On Thu, May 13, 2021 at 03:24:18PM +0200, Uladzislau Rezki wrote: > > > > What can of testing failures does it trigger? Where can i find the > > > > details, logs or tracers of it? > > > > > > https://lore.kernel.org/linux-next/20210512175359.17793d34@xxxxxxxxxxxxxxxx/ > > > > > Thanks, Mel. > > > > OK. Now i see. The problem is with this patch: > > > > mm/vmalloc: switch to bulk allocator in __vmalloc_area_node() > > > > <SNIP> > > > > So during the boot process when the module is about to be loaded, the vmalloc allocation > > gets failed in the __alloc_pages_bulk(). > > > > Will try to reproduce. It would be good to get a kernel config. > > Appreciate for any thoughts about it? > > > > I see that on the target machine when the problem occurs the PAGE_SIZE is 64K. > > Can it be somehow connected to it? Also one question, just guessing, the crash > happens during the boot, therefore the question is: is __alloc_pages_bulk() > fully initialized by that time? > A boot test on KVM using my distribution config (openSUSE Leap 15.2) failed on x86-64 so it's not related to PAGE_SIZE. -- Mel Gorman SUSE Labs
