Re: kernel BUG at mm/swap.c:134! - page dumped because: VM_BUG_ON_PAGE(page_mapcount(page) != 0)

ed to 8d63d99a5dfb as possible cause. I don't see why the commit could broke anything, but it worth trying to revert and test. Borislav, could you try? > --- > [115258.861335] page:ffffea0010a15040 count:0 mapcount:1 mapping: > (null) index:0x0 > [115258.869511] flags: 0x8

Re: kernel BUG at mm/swap.c:134! - page dumped because: VM_BUG_ON_PAGE(page_mapcount(page) != 0)

... Linus --- [115258.861335] page:ea0010a15040 count:0 mapcount:1 mapping: (null) index:0x0 [115258.869511] flags: 0x80008014(referenced|dirty|tail) [115258.874159] page dumped because: VM_BUG_ON_PAGE(page_mapcount(page) != 0) [115258.874179] kernel BUG at mm/swap.c:134