On Fri, May 22, 2026 at 01:47:24PM -0700, Andrew Morton wrote: Hi Andrew et al,
> On Fri, 22 May 2026 08:59:55 -0600 Nico Pache <[email protected]> wrote: > > > The following series provides khugepaged with the capability to collapse > > anonymous memory regions to mTHPs. > > Thanks, I've update mm.git's mm-unstable branch to this version. > > It sounds like I might be dropping it soon, haven't started looking at > that yet. But let's at least eyeball the latest version at this time. > > Sashiko was able to apply this, so the base-it-on-hotfixes thing worked > well, thanks. The AI checking made a few allegations: This series appears to cause hangs on s390 in linux-next. The issue is not easily reproducible, so it is not yet confirmed. Any ideas for a reliable reproducer that exercises the code path below? [ 2749.385719] sysrq: Show Blocked State [ 2749.385730] task:khugepaged state:D stack:0 pid:209 tgid:209 ppid:2 task_flags:0x200040 flags:0x00000000 [ 2749.385735] Call Trace: [ 2749.385736] [<0000017f63c8b226>] __schedule+0x316/0x890 [ 2749.385740] [<0000017f63c8b7dc>] schedule+0x3c/0xc0 [ 2749.385743] [<0000017f63c8b888>] schedule_preempt_disabled+0x28/0x40 [ 2749.385746] [<0000017f63c902ea>] rwsem_down_write_slowpath+0x2fa/0x8b0 [ 2749.385749] [<0000017f63c90910>] down_write+0x70/0x80 [ 2749.385752] [<0000017f6313407a>] collapse_huge_page+0x2ea/0x9e0 [ 2749.385755] [<0000017f6313491e>] mthp_collapse+0x1ae/0x1f0 [ 2749.385757] [<0000017f63134fda>] collapse_scan_pmd+0x67a/0x8f0 [ 2749.385760] [<0000017f6313751a>] collapse_single_pmd+0x15a/0x260 [ 2749.385762] [<0000017f6313792c>] collapse_scan_mm_slot.constprop.0+0x30c/0x470 [ 2749.385765] [<0000017f63137cb6>] khugepaged+0x226/0x240 [ 2749.385768] [<0000017f62db3128>] kthread+0x148/0x170 [ 2749.385770] [<0000017f62d2c238>] __ret_from_fork+0x48/0x220 [ 2749.385772] [<0000017f63c95d0a>] ret_from_fork+0xa/0x30 Thanks!
