On Thu 15-11-18 21:12:11, Baoquan He wrote: > On 11/15/18 at 09:30am, Michal Hocko wrote: [...] > > It would be also good to find out whether this is fs specific. E.g. does > > it make any difference if you use a different one for your stress > > testing? > > Created a ramdisk and put stress bin there, then run stress -m 200, now > seems it's stuck in libc-2.28.so migrating. And it's still xfs. So now xfs > is a big suspect. At bottom I paste numactl printing, you can see that it's > the last 4G. > > Seems it's trying to migrate libc-2.28.so, but stress program keeps trying to > access and activate it. Is this still with faultaround disabled? I have seen exactly same pattern in the bug I am working on. It was ext4 though. > [ 5055.461652] migrating pfn 190f4fb3e failed > [ 5055.461671] page:ffffea643d3ecf80 count:257 mapcount:251 mapping:ffff888e7a6ac528 index:0x85 > [ 5055.474734] xfs_address_space_operations [xfs] > [ 5055.474742] name:"libc-2.28.so" > [ 5055.481070] flags: 0x1dfffffc0000026(referenced|uptodate|active) > [ 5055.490329] raw: 01dfffffc0000026 ffffc900000e3d80 ffffc900000e3d80 ffff888e7a6ac528 > [ 5055.498080] raw: 0000000000000085 0000000000000000 000000fc000000f9 ffff88810a8f2000 > [ 5055.505823] page->mem_cgroup:ffff88810a8f2000 > [ 5056.335970] migrating pfn 190f4fb3e failed > [ 5056.335990] page:ffffea643d3ecf80 count:255 mapcount:250 mapping:ffff888e7a6ac528 index:0x85 > [ 5056.348994] xfs_address_space_operations [xfs] > [ 5056.348998] name:"libc-2.28.so" > [ 5056.353555] flags: 0x1dfffffc0000026(referenced|uptodate|active) > [ 5056.364680] raw: 01dfffffc0000026 ffffc900000e3d80 ffffc900000e3d80 ffff888e7a6ac528 > [ 5056.372428] raw: 0000000000000085 0000000000000000 000000fc000000f9 ffff88810a8f2000 > [ 5056.380172] page->mem_cgroup:ffff88810a8f2000 > [ 5057.332806] migrating pfn 190f4fb3e failed > [ 5057.332821] page:ffffea643d3ecf80 count:261 mapcount:250 mapping:ffff888e7a6ac528 index:0x85 > [ 5057.345889] xfs_address_space_operations [xfs] > [ 5057.345900] name:"libc-2.28.so" > [ 5057.350451] flags: 0x1dfffffc0000026(referenced|uptodate|active) > [ 5057.359707] raw: 01dfffffc0000026 ffffc900000e3d80 ffffc900000e3d80 ffff888e7a6ac528 > [ 5057.369285] raw: 0000000000000085 0000000000000000 000000fc000000f9 ffff88810a8f2000 > [ 5057.377030] page->mem_cgroup:ffff88810a8f2000 > [ 5058.285457] migrating pfn 190f4fb3e failed > [ 5058.285489] page:ffffea643d3ecf80 count:257 mapcount:250 mapping:ffff888e7a6ac528 index:0x85 > [ 5058.298544] xfs_address_space_operations [xfs] > [ 5058.298556] name:"libc-2.28.so" > [ 5058.303092] flags: 0x1dfffffc0000026(referenced|uptodate|active) > [ 5058.314358] raw: 01dfffffc0000026 ffffc900000e3d80 ffffc900000e3d80 ffff888e7a6ac528 > [ 5058.322109] raw: 0000000000000085 0000000000000000 000000fc000000f9 ffff88810a8f2000 > [ 5058.329848] page->mem_cgroup:ffff88810a8f2000 -- Michal Hocko SUSE Labs
