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Message-ID: <Y782h7t10uRVW0RC@monkey>
Date: Wed, 11 Jan 2023 14:21:59 -0800
From: Mike Kravetz <mike.kravetz@...cle.com>
To: Huang Ying <ying.huang@...el.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, Zi Yan <ziy@...dia.com>,
Yang Shi <shy828301@...il.com>,
Baolin Wang <baolin.wang@...ux.alibaba.com>,
Oscar Salvador <osalvador@...e.de>,
Matthew Wilcox <willy@...radead.org>,
Bharata B Rao <bharata@....com>,
Alistair Popple <apopple@...dia.com>,
haoxin <xhao@...ux.alibaba.com>
Subject: Re: [PATCH -v2 0/9] migrate_pages(): batch TLB flushing
On 01/10/23 17:53, Mike Kravetz wrote:
> Just saw the following easily reproducible issue on next-20230110. Have not
> verified it is related to/caused by this series, but it looks suspicious.
Verified this is caused by the series,
734cbddcfe72 migrate_pages: organize stats with struct migrate_pages_stats
to
323b933ba062 migrate_pages: batch flushing TLB
in linux-next.
--
Mike Kravetz
>
> Reproduce by,
>
> # echo <very large number> > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
>
> This will 'attempt' to allocate hugetlb pages until it fails.
>
> --
> Mike Kravetz
>
> [ 46.084610] page:ffffea0005d69f40 refcount:2 mapcount:1 mapping:0000000000000000 index:0xffffea0005c37bc0 pfn:0x175a7d
> [ 46.086777] flags: 0x200000000002000(private|node=0|zone=2)
> [ 46.088025] raw: 0200000000002000 dead000000000100 dead000000000122 ffffffff81e28c42
> [ 46.089413] page:ffffea0005e6ffc0 refcount:2 mapcount:145 mapping:0000000000000000 index:0xffffea0005fe09c0 pfn:0x179bff
> [ 46.089762] raw: ffffea0005c37bc0 ffff88817d0bf0c0 0000000200000000 0000000000000000
> [ 46.091287] flags: 0x200000000000000(node=0|zone=2)
> [ 46.091291] raw: 0200000000000000 dead000000000100 dead000000000122 ffffffff81e28c42
> [ 46.091293] raw: ffffea0005fe09c0 ffff88817d0bf2e8 0000000200000090 0000000000000000
> [ 46.091294] page dumped because: VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled())
> [ 46.092652] page dumped because: VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled())
> [ 46.092671] ------------[ cut here ]------------
> [ 46.094438] ------------[ cut here ]------------
> [ 46.095638] WARNING: CPU: 0 PID: 836 at include/linux/memcontrol.h:756 folio_lruvec_lock_irqsave+0xde/0x120
> [ 46.096882] WARNING: CPU: 1 PID: 41 at include/linux/memcontrol.h:756 folio_lruvec_lock_irqsave+0xde/0x120
> [ 46.098193] Modules linked in:
> [ 46.099364] Modules linked in: rfkill ip6table_filter ip6_tables sunrpc snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_hda_codec joydev 9p snd_hwdep netfs
> [ 46.100184] rfkill
> [ 46.100843] snd_hda_core
> [ 46.102560] ip6table_filter
> [ 46.103937] snd_seq snd_seq_device snd_pcm virtio_balloon 9pnet_virtio snd_timer snd 9pnet soundcore virtio_console virtio_net net_failover
> [ 46.104497] ip6_tables
> [ 46.106522] failover virtio_blk crct10dif_pclmul
> [ 46.106921] sunrpc
> [ 46.107340] crc32_pclmul
> [ 46.107873] snd_hda_codec_generic
> [ 46.109582] crc32c_intel ghash_clmulni_intel serio_raw
> [ 46.110016] snd_hda_intel
> [ 46.110698] virtio_pci
> [ 46.111067] snd_intel_dspcfg
> [ 46.111483] virtio
> [ 46.112101] snd_hda_codec
> [ 46.112963] virtio_pci_legacy_dev virtio_pci_modern_dev virtio_ring fuse
> [ 46.112970] CPU: 1 PID: 41 Comm: kcompactd0 Not tainted 6.2.0-rc3-next-20230110+ #39
> [ 46.113399] joydev
> [ 46.113756] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
> [ 46.114248] 9p snd_hwdep
> [ 46.114676] RIP: 0010:folio_lruvec_lock_irqsave+0xde/0x120
> [ 46.115052] netfs snd_hda_core snd_seq
> [ 46.115972] Code: 83 66 90 80 3d 1f 76 31 01 00 0f 85 74 ff ff ff 48 c7 c6 e8 2f 21 82 48 89 df 48 89 04 24 e8 29 6b f7 ff c6 05 ff 75 31 01 01 <0f> 0b 48 8b 04 24 e9 4f ff ff ff 48 c7 c6 e8 2d 21 82 e8 0b 6b f7
> [ 46.117079] snd_seq_device snd_pcm virtio_balloon 9pnet_virtio snd_timer snd 9pnet soundcore virtio_console
> [ 46.117375] RSP: 0018:ffffc9000121fa58 EFLAGS: 00010246
> [ 46.118633] virtio_net net_failover failover
> [ 46.119056]
> [ 46.119845] virtio_blk
> [ 46.120351] RAX: 000000000000004c RBX: ffffea0005e6ffc0 RCX: 0000000000000000
> [ 46.122782] crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel
> [ 46.124257] RDX: 0000000000000000 RSI: ffffffff8223be4a RDI: 00000000ffffffff
> [ 46.125032] serio_raw virtio_pci virtio virtio_pci_legacy_dev virtio_pci_modern_dev
> [ 46.125686] RBP: 0000000000000000 R08: 3030303030327830 R09: 3030303030303030
> [ 46.125891] virtio_ring
> [ 46.126250] R10: 00000000203a7367 R11: 0000000067616c66 R12: ffffc9000121fa80
> [ 46.127107] fuse
> [ 46.128096] R13: ffffffff812709d0 R14: 0000000000000000 R15: ffffea0005a98e80
> [ 46.128097] FS: 0000000000000000(0000) GS:ffff888277d00000(0000) knlGS:0000000000000000
> [ 46.128099] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 46.128100] CR2: 0000557bd8d9ab54 CR3: 000000017f58c006 CR4: 0000000000370ee0
> [ 46.128104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 46.129137]
> [ 46.129139] CPU: 0 PID: 836 Comm: bash Not tainted 6.2.0-rc3-next-20230110+ #39
> [ 46.130216] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [ 46.130218] Call Trace:
> [ 46.130219] <TASK>
> [ 46.130221] folio_batch_move_lru+0x91/0x180
> [ 46.131261] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
> [ 46.131263] RIP: 0010:folio_lruvec_lock_irqsave+0xde/0x120
> [ 46.131647] folio_add_lru+0x83/0x100
> [ 46.132546] Code: 83 66 90 80 3d 1f 76 31 01 00 0f 85 74 ff ff ff 48 c7 c6 e8 2f 21 82 48 89 df 48 89 04 24 e8 29 6b f7 ff c6 05 ff 75 31 01 01 <0f> 0b 48 8b 04 24 e9 4f ff ff ff 48 c7 c6 e8 2d 21 82 e8 0b 6b f7
> [ 46.132825] migrate_pages_batch+0x4fb/0x1210
> [ 46.133889] RSP: 0018:ffffc90003a2f658 EFLAGS: 00010246
> [ 46.135033] ? __pfx_compaction_free+0x10/0x10
> [ 46.135864]
> [ 46.136891] ? __pfx_compaction_alloc+0x10/0x10
> [ 46.136895] ? __pfx_remove_migration_pte+0x10/0x10
> [ 46.137933] RAX: 000000000000004c RBX: ffffea0005d69f40 RCX: 0000000000000000
> [ 46.138143] migrate_pages+0xa35/0xaf0
> [ 46.139206] RDX: 0000000000000000 RSI: ffffffff8223be4a RDI: 00000000ffffffff
> [ 46.140186] ? __mod_node_page_state+0x72/0xc0
> [ 46.140497] RBP: 0000000000000000 R08: ffffffff824636a0 R09: 0000000082d9d55e
> [ 46.140823] ? __pfx_compaction_alloc+0x10/0x10
> [ 46.141527] R10: ffffffffffffffff R11: ffffffffffffffff R12: ffffc90003a2f680
> [ 46.142707] ? __pfx_compaction_free+0x10/0x10
> [ 46.142714] compact_zone+0x9d4/0xdf0
> [ 46.143533] R13: ffffffff812709d0 R14: 0000000000000000 R15: ffffea0005a96c80
> [ 46.143535] FS: 00007f2148bff740(0000) GS:ffff888277c00000(0000) knlGS:0000000000000000
> [ 46.143537] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 46.143539] CR2: 0000563a927d7c20 CR3: 000000017f58c004 CR4: 0000000000370ef0
> [ 46.144211] kcompactd_do_work+0x1d2/0x2c0
> [ 46.147103] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 46.147105] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [ 46.147107] Call Trace:
> [ 46.147109] <TASK>
> [ 46.147111] folio_batch_move_lru+0x91/0x180
> [ 46.147833] kcompactd+0x220/0x3e0
> [ 46.148533] folio_add_lru+0x83/0x100
> [ 46.149164] ? __pfx_autoremove_wake_function+0x10/0x10
> [ 46.149413] migrate_pages_batch+0x4fb/0x1210
> [ 46.150058] ? __pfx_kcompactd+0x10/0x10
> [ 46.150814] ? __pfx_compaction_free+0x10/0x10
> [ 46.151669] kthread+0xe6/0x110
> [ 46.152277] ? __pfx_compaction_alloc+0x10/0x10
> [ 46.152281] ? __pfx_remove_migration_pte+0x10/0x10
> [ 46.153276] ? __pfx_kthread+0x10/0x10
> [ 46.153280] ret_from_fork+0x29/0x50
> [ 46.154056] migrate_pages+0xa35/0xaf0
> [ 46.154059] ? __mod_node_page_state+0x72/0xc0
> [ 46.155067] </TASK>
> [ 46.155768] ? __pfx_compaction_alloc+0x10/0x10
> [ 46.156656] ---[ end trace 0000000000000000 ]---
> [ 46.157310] ? __pfx_compaction_free+0x10/0x10
> [ 46.157316] compact_zone+0x9d4/0xdf0
> [ 46.209601] compact_zone_order+0xc0/0x130
> [ 46.210469] try_to_compact_pages+0xf0/0x2f0
> [ 46.211439] __alloc_pages_direct_compact+0x78/0x380
> [ 46.212525] __alloc_pages_slowpath.constprop.0+0x3e4/0xe10
> [ 46.213725] ? vmemmap_remap_range+0x578/0x590
> [ 46.215659] ? free_unref_page+0x186/0x1e0
> [ 46.216502] ? prepare_alloc_pages.constprop.0+0x197/0x1b0
> [ 46.217583] __alloc_pages+0x218/0x240
> [ 46.218409] alloc_buddy_hugetlb_folio.isra.0+0x66/0x140
> [ 46.219456] alloc_fresh_hugetlb_folio+0x1cd/0x260
> [ 46.220410] alloc_pool_huge_page+0x77/0xb0
> [ 46.221265] set_max_huge_pages+0x16c/0x3a0
> [ 46.222124] ? kernfs_fop_write_iter+0x160/0x1f0
> [ 46.223039] __nr_hugepages_store_common+0x4e/0xb0
> [ 46.223941] ? _kstrtoull+0x3b/0x90
> [ 46.224679] nr_hugepages_store+0x77/0x80
> [ 46.225538] kernfs_fop_write_iter+0x108/0x1f0
> [ 46.226439] vfs_write+0x203/0x3d0
> [ 46.227181] ksys_write+0x63/0xe0
> [ 46.227896] do_syscall_64+0x37/0x90
> [ 46.228648] entry_SYSCALL_64_after_hwframe+0x72/0xdc
> [ 46.229656] RIP: 0033:0x7f2148cf3e87
> [ 46.230444] Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
> [ 46.233509] RSP: 002b:00007fff92367e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
> [ 46.234869] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f2148cf3e87
> [ 46.236042] RDX: 000000000000000d RSI: 0000557bd8d9ab50 RDI: 0000000000000001
> [ 46.237408] RBP: 0000557bd8d9ab50 R08: 000000000000000a R09: 00007f2148d8b0c0
> [ 46.238801] R10: 00007f2148d8afc0 R11: 0000000000000246 R12: 000000000000000d
> [ 46.240217] R13: 00007f2148dc7520 R14: 000000000000000d R15: 00007f2148dc7720
> [ 46.241738] </TASK>
> [ 46.242289] ---[ end trace 0000000000000000 ]---
> [ 46.301978] page:ffffea0005be0400 refcount:2 mapcount:1 mapping:0000000000000000 index:0x0 pfn:0x16f810
> [ 46.304043] flags: 0x200000000002000(private|node=0|zone=2)
> [ 46.305321] raw: 0200000000002000 ffffea0005f3d2c8 ffffea0005fe0648 ffffffff81e28c42
> [ 46.318282] raw: 0000000000000000 ffff88817a78f738 0000000200000000 0000000000000000
> [ 46.319978] page dumped because: VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled())
> [ 46.321820] ------------[ cut here ]------------
> [ 46.322924] WARNING: CPU: 0 PID: 836 at include/linux/memcontrol.h:756 isolate_migratepages_block+0x139b/0x1590
> [ 46.325280] Modules linked in: rfkill ip6table_filter ip6_tables sunrpc snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_hda_codec joydev 9p snd_hwdep netfs snd_hda_core snd_seq snd_seq_device snd_pcm virtio_balloon 9pnet_virtio snd_timer snd 9pnet soundcore virtio_console virtio_net net_failover failover virtio_blk crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw virtio_pci virtio virtio_pci_legacy_dev virtio_pci_modern_dev virtio_ring fuse
> [ 46.334006] CPU: 0 PID: 836 Comm: bash Tainted: G W 6.2.0-rc3-next-20230110+ #39
> [ 46.335723] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
> [ 46.338314] RIP: 0010:isolate_migratepages_block+0x139b/0x1590
> [ 46.339469] Code: 01 00 0f 85 3e f3 ff ff 48 c7 c6 e8 2f 21 82 48 89 44 24 58 44 88 54 24 60 48 89 7c 24 38 e8 ac 50 00 00 c6 05 55 5b 3a 01 01 <0f> 0b 48 8b 44 24 58 44 0f b6 54 24 60 48 8b 7c 24 38 e9 05 f3 ff
> [ 46.342950] RSP: 0018:ffffc90003a2f868 EFLAGS: 00010046
> [ 46.343994] RAX: 000000000000004c RBX: 0000000000000000 RCX: 0000000000000000
> [ 46.345374] RDX: 0000000000000000 RSI: ffffffff8223be4a RDI: 00000000ffffffff
> [ 46.346749] RBP: 000000000016f810 R08: 00000000ffffdfff R09: 00000000ffffdfff
> [ 46.348100] R10: ffffffff82463700 R11: ffffffff82463700 R12: ffffc90003a2f9f0
> [ 46.349424] R13: ffffea0005be0400 R14: 0000000005be0400 R15: ffff88817e3ca000
> [ 46.350812] FS: 00007f2148bff740(0000) GS:ffff888277c00000(0000) knlGS:0000000000000000
> [ 46.352314] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 46.353405] CR2: 0000563a927d7c20 CR3: 000000017f58c004 CR4: 0000000000370ef0
> [ 46.354731] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 46.356093] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [ 46.357512] Call Trace:
> [ 46.358080] <TASK>
> [ 46.358570] compact_zone+0x39b/0xdf0
> [ 46.359329] compact_zone_order+0xc0/0x130
> [ 46.360152] try_to_compact_pages+0xf0/0x2f0
> [ 46.360956] __alloc_pages_direct_compact+0x78/0x380
> [ 46.362015] __alloc_pages_slowpath.constprop.0+0x3e4/0xe10
> [ 46.363157] ? vmemmap_remap_range+0x578/0x590
> [ 46.364195] ? free_unref_page+0x186/0x1e0
> [ 46.365082] ? prepare_alloc_pages.constprop.0+0x197/0x1b0
> [ 46.366299] __alloc_pages+0x218/0x240
> [ 46.367853] alloc_buddy_hugetlb_folio.isra.0+0x66/0x140
> [ 46.368946] alloc_fresh_hugetlb_folio+0x1cd/0x260
> [ 46.369983] alloc_pool_huge_page+0x77/0xb0
> [ 46.370864] set_max_huge_pages+0x16c/0x3a0
> [ 46.371753] ? kernfs_fop_write_iter+0x160/0x1f0
> [ 46.372678] __nr_hugepages_store_common+0x4e/0xb0
> [ 46.373615] ? _kstrtoull+0x3b/0x90
> [ 46.374367] nr_hugepages_store+0x77/0x80
> [ 46.375117] kernfs_fop_write_iter+0x108/0x1f0
> [ 46.375887] vfs_write+0x203/0x3d0
> [ 46.376516] ksys_write+0x63/0xe0
> [ 46.377125] do_syscall_64+0x37/0x90
> [ 46.377909] entry_SYSCALL_64_after_hwframe+0x72/0xdc
> [ 46.378857] RIP: 0033:0x7f2148cf3e87
> [ 46.379598] Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
> [ 46.382943] RSP: 002b:00007fff92367e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
> [ 46.384279] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f2148cf3e87
> [ 46.385480] RDX: 000000000000000d RSI: 0000557bd8d9ab50 RDI: 0000000000000001
> [ 46.386680] RBP: 0000557bd8d9ab50 R08: 000000000000000a R09: 00007f2148d8b0c0
> [ 46.387902] R10: 00007f2148d8afc0 R11: 0000000000000246 R12: 000000000000000d
> [ 46.389203] R13: 00007f2148dc7520 R14: 000000000000000d R15: 00007f2148dc7720
> [ 46.390510] </TASK>
> [ 46.391045] ---[ end trace 0000000000000000 ]---
> [ 46.392105] page:ffffea0005be0400 refcount:2 mapcount:1 mapping:0000000000000000 index:0x0 pfn:0x16f810
> [ 46.394529] flags: 0x200000000002001(locked|private|node=0|zone=2)
> [ 46.396138] raw: 0200000000002001 ffffea0005be03c8 ffffc90003a2f768 ffffffff81e28c42
> [ 46.399758] raw: 0000000000000000 ffff88817a78f738 0000000200000000 0000000000000000
> [ 46.402249] page dumped because: VM_BUG_ON_FOLIO(!folio_test_isolated(src))
> [ 46.404308] ------------[ cut here ]------------
> [ 46.405764] kernel BUG at mm/migrate.c:986!
> [ 46.407171] invalid opcode: 0000 [#1] PREEMPT SMP PTI
> [ 46.409174] CPU: 0 PID: 836 Comm: bash Tainted: G W 6.2.0-rc3-next-20230110+ #39
> [ 46.411797] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
> [ 46.413956] RIP: 0010:move_to_new_folio+0x1e4/0x1f0
> [ 46.415451] Code: 63 02 fb 31 c0 e9 ce fe ff ff 48 c7 c6 e0 cd 21 82 48 89 df e8 fd 26 f9 ff 0f 0b 48 c7 c6 e0 cd 21 82 48 89 df e8 ec 26 f9 ff <0f> 0b 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
> [ 46.421496] RSP: 0018:ffffc90003a2f6b0 EFLAGS: 00010246
> [ 46.422751] RAX: 000000000000003f RBX: ffffea0005be0400 RCX: 0000000000000000
> [ 46.424844] RDX: 0000000000000000 RSI: ffffffff8223be4a RDI: 00000000ffffffff
> [ 46.426904] RBP: ffffea0005e300c0 R08: 00000000ffffdfff R09: 00000000ffffdfff
> [ 46.430491] R10: ffffffff82463700 R11: ffffffff82463700 R12: 0000000000000000
> [ 46.432562] R13: 0000000000000001 R14: ffffea0005be0400 R15: ffffea0005be03c0
> [ 46.434219] FS: 00007f2148bff740(0000) GS:ffff888277c00000(0000) knlGS:0000000000000000
> [ 46.436075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 46.438219] CR2: 0000563a927d7c20 CR3: 000000017f58c004 CR4: 0000000000370ef0
> [ 46.440031] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 46.441560] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [ 46.443031] Call Trace:
> [ 46.443586] <TASK>
> [ 46.444095] migrate_pages_batch+0x4b9/0x1210
> [ 46.445028] ? __pfx_compaction_free+0x10/0x10
> [ 46.445962] ? __pfx_compaction_alloc+0x10/0x10
> [ 46.446937] ? __pfx_remove_migration_pte+0x10/0x10
> [ 46.448008] migrate_pages+0xa35/0xaf0
> [ 46.448870] ? __mod_node_page_state+0x72/0xc0
> [ 46.449852] ? __pfx_compaction_alloc+0x10/0x10
> [ 46.450873] ? __pfx_compaction_free+0x10/0x10
> [ 46.451941] compact_zone+0x9d4/0xdf0
> [ 46.452786] compact_zone_order+0xc0/0x130
> [ 46.453722] try_to_compact_pages+0xf0/0x2f0
> [ 46.454715] __alloc_pages_direct_compact+0x78/0x380
> [ 46.456032] __alloc_pages_slowpath.constprop.0+0x3e4/0xe10
> [ 46.457468] ? vmemmap_remap_range+0x578/0x590
> [ 46.459525] ? free_unref_page+0x186/0x1e0
> [ 46.460472] ? prepare_alloc_pages.constprop.0+0x197/0x1b0
> [ 46.461667] __alloc_pages+0x218/0x240
> [ 46.462556] alloc_buddy_hugetlb_folio.isra.0+0x66/0x140
> [ 46.463725] alloc_fresh_hugetlb_folio+0x1cd/0x260
> [ 46.464706] alloc_pool_huge_page+0x77/0xb0
> [ 46.465446] set_max_huge_pages+0x16c/0x3a0
> [ 46.466234] ? kernfs_fop_write_iter+0x160/0x1f0
> [ 46.467161] __nr_hugepages_store_common+0x4e/0xb0
> [ 46.468060] ? _kstrtoull+0x3b/0x90
> [ 46.468805] nr_hugepages_store+0x77/0x80
> [ 46.469622] kernfs_fop_write_iter+0x108/0x1f0
> [ 46.470500] vfs_write+0x203/0x3d0
> [ 46.471219] ksys_write+0x63/0xe0
> [ 46.471889] do_syscall_64+0x37/0x90
> [ 46.472643] entry_SYSCALL_64_after_hwframe+0x72/0xdc
> [ 46.473606] RIP: 0033:0x7f2148cf3e87
> [ 46.474323] Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
> [ 46.477667] RSP: 002b:00007fff92367e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
> [ 46.479164] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f2148cf3e87
> [ 46.480477] RDX: 000000000000000d RSI: 0000557bd8d9ab50 RDI: 0000000000000001
> [ 46.481783] RBP: 0000557bd8d9ab50 R08: 000000000000000a R09: 00007f2148d8b0c0
> [ 46.483086] R10: 00007f2148d8afc0 R11: 0000000000000246 R12: 000000000000000d
> [ 46.484529] R13: 00007f2148dc7520 R14: 000000000000000d R15: 00007f2148dc7720
> [ 46.486022] </TASK>
> [ 46.486563] Modules linked in: rfkill ip6table_filter ip6_tables sunrpc snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_hda_codec joydev 9p snd_hwdep netfs snd_hda_core snd_seq snd_seq_device snd_pcm virtio_balloon 9pnet_virtio snd_timer snd 9pnet soundcore virtio_console virtio_net net_failover failover virtio_blk crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw virtio_pci virtio virtio_pci_legacy_dev virtio_pci_modern_dev virtio_ring fuse
> [ 46.495734] ---[ end trace 0000000000000000 ]---
> [ 46.496819] RIP: 0010:move_to_new_folio+0x1e4/0x1f0
> [ 46.498074] Code: 63 02 fb 31 c0 e9 ce fe ff ff 48 c7 c6 e0 cd 21 82 48 89 df e8 fd 26 f9 ff 0f 0b 48 c7 c6 e0 cd 21 82 48 89 df e8 ec 26 f9 ff <0f> 0b 0f 0b 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
> [ 46.501891] RSP: 0018:ffffc90003a2f6b0 EFLAGS: 00010246
> [ 46.503055] RAX: 000000000000003f RBX: ffffea0005be0400 RCX: 0000000000000000
> [ 46.504548] RDX: 0000000000000000 RSI: ffffffff8223be4a RDI: 00000000ffffffff
> [ 46.506072] RBP: ffffea0005e300c0 R08: 00000000ffffdfff R09: 00000000ffffdfff
> [ 46.507643] R10: ffffffff82463700 R11: ffffffff82463700 R12: 0000000000000000
> [ 46.509193] R13: 0000000000000001 R14: ffffea0005be0400 R15: ffffea0005be03c0
> [ 46.510724] FS: 00007f2148bff740(0000) GS:ffff888277c00000(0000) knlGS:0000000000000000
> [ 46.512569] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 46.513878] CR2: 0000563a927d7c20 CR3: 000000017f58c004 CR4: 0000000000370ef0
> [ 46.515469] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 46.517088] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>
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