On 07.01.2019 19:57, Konstantin Khlebnikov wrote:
I've got couple of these for 4.14.
Maybe related but this happened with THP tmpfs.
<1>[220723.475439] huge_memory: total_mapcount: 63, page_count(): 576
<0>[220723.475474] page:ffffea0024ee8000 count:576 mapcount:0
mapping:ffff881813235550 index:0x0 compound_mapcount: 0
<0>[220723.475512] flags:
0x10000000004807d(locked|referenced|uptodate|dirty|lru|active|head|swapbacked)
<1>[220723.475545] raw: 010000000004807d ffff881813235550 0000000000000000
00000240ffffffff
<1>[220723.475573] raw: ffffea004c099a20 ffffea002bd9e020 0000000000000000
ffff883018044800
<1>[220723.475601] page dumped because: total_mapcount(head) > 0
<1>[220723.475621] page->mem_cgroup:ffff883018044800
<4>[220723.475644] ------------[ cut here ]------------
<2>[220723.475645] kernel BUG at mm/huge_memory.c:2652!
<4>[220723.475667] invalid opcode: 0000 [#1] SMP PTI
<4>[220723.475684] Modules linked in: xt_nat xt_limit overlay ip6table_nat nf_nat_ipv6 nf_nat veth tcp_diag inet_diag unix_diag xt_NFLOG
nfnetlink_log nfnetlink ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common xt_LOG nf_conntrack_ipv6 nf_defrag_ipv6 xt_u32 ip6table_raw
xt_conntrack ip6table_filter xt_tcpudp xt_CT nf_conntrack iptable_raw xt_multiport iptable_filter bridge ip6_tables ip_tables x_tables
sch_fq_codel sch_hfsc netconsole configfs 8021q mrp garp stp llc intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp mgag200 coretemp
ttm kvm_intel drm_kms_helper drm kvm fb_sys_fops sysimgblt input_leds sysfillrect syscopyarea irqbypass lpc_ich mfd_core ghash_clmulni_intel
shpchp ioatdma wmi tcp_bbr ip6_tunnel tunnel6 mlx4_en mlx4_core devlink tcp_nv tcp_htcp raid456 async_raid6_recov async_pq async_xor
<4>[220723.475954] xor async_memcpy async_tx raid10 igb isci dca libsas i2c_algo_bit ptp scsi_transport_sas pps_core raid6_pq libcrc32c
raid1 raid0 multipath linear [last unloaded: ipmi_msghandler]
<4>[220723.476021] CPU: 5 PID: 529913 Comm: qpipe-updater Not tainted
4.14.80-33 #1
<4>[220723.476047] Hardware name: Aquarius Aquarius Server/X9DRW, BIOS 3.0c
10/30/2014
<4>[220723.476074] task: ffff8817b98f3900 task.stack: ffffc900311d4000
<4>[220723.476099] RIP: 0010:split_huge_page_to_list+0x7b5/0x8d0
<4>[220723.476120] RSP: 0018:ffffc900311d76a0 EFLAGS: 00010086
<4>[220723.476140] RAX: 0000000000000021 RBX: ffff881813235550 RCX:
0000000000000006
<4>[220723.476165] RDX: 0000000000000007 RSI: 0000000000000082 RDI:
ffff88181fb55730
<4>[220723.476190] RBP: 0000000000000000 R08: 0000000000000000 R09:
0000000000000c20
<4>[220723.476216] R10: ffffc900311d7690 R11: 0000000000000001 R12:
0000000000000000
<4>[220723.476241] R13: ffffea0024ee8000 R14: ffff88187fffb000 R15:
ffffea0024ee8000
<4>[220723.476267] FS: 00007fe7a69097c0(0000) GS:ffff88181fb40000(0000)
knlGS:0000000000000000
<4>[220723.476296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[220723.476317] CR2: 00007fe78c1e1000 CR3: 0000001815530005 CR4:
00000000000606e0
<4>[220723.476342] Call Trace:
<4>[220723.476358] ? find_get_entry+0x20/0x140
<4>[220723.476377] shmem_unused_huge_shrink+0x184/0x3f0
<4>[220723.476398] super_cache_scan+0x184/0x190
<4>[220723.476416] shrink_slab.part.54+0x1ec/0x430
<4>[220723.476434] shrink_node+0x300/0x310
<4>[220723.476451] do_try_to_free_pages+0xe3/0x350
<4>[220723.476469] try_to_free_pages+0xe4/0x1d0
<4>[220723.476487] __alloc_pages_slowpath+0x3a5/0xe70
<4>[220723.476507] __alloc_pages_nodemask+0x25c/0x2a0
<4>[220723.476526] shmem_alloc_hugepage+0xc7/0x110
<4>[220723.476545] ? __radix_tree_create+0x168/0x1f0
<4>[220723.476563] ? release_pages+0x2c8/0x3a0
<4>[220723.476579] ? release_pages+0x2c8/0x3a0
<4>[220723.477420] ? __activate_page+0x200/0x2d0
<4>[220723.478254] ? percpu_counter_add_batch+0x52/0x70
<4>[220723.479095] shmem_alloc_and_acct_page+0x108/0x1d0
<4>[220723.479926] shmem_getpage_gfp+0x4ef/0xdf0
<4>[220723.480736] shmem_write_begin+0x35/0x60
<4>[220723.481514] generic_perform_write+0xaf/0x1b0
<4>[220723.482293] __generic_file_write_iter+0x196/0x1e0
<4>[220723.483061] generic_file_write_iter+0xe6/0x1f0
<4>[220723.483820] __vfs_write+0xdc/0x150
<4>[220723.484573] vfs_write+0xc5/0x1c0
<4>[220723.485324] SyS_write+0x42/0x90
<4>[220723.486067] do_syscall_64+0x67/0x120
<4>[220723.486790] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
<4>[220723.487496] RIP: 0033:0x7fe7a60d8330
<4>[220723.488175] RSP: 002b:00007ffc05104af8 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
<4>[220723.488851] RAX: ffffffffffffffda RBX: 00007fe785e00000 RCX:
00007fe7a60d8330
<4>[220723.489511] RDX: 0000000011be3b28 RSI: 00007fe785e00000 RDI:
0000000000000003
<4>[220723.490156] RBP: 0000000011be3b28 R08: 00007fe7a69097c0 R09:
00007ffc05104bb7
<4>[220723.490770] R10: 00007ffc051048c0 R11: 0000000000000246 R12:
0000000107b88c00
<4>[220723.491364] R13: 00007ffc051057b8 R14: 0000000011be3b28 R15:
00000001072886b8
<4>[220723.491933] Code: 8b 54 24 08 48 c7 c7 28 54 06 82 e8 51 59 eb ff 49 8b 45 20 a8 01 0f 85 1b 01 00 00 48 c7 c6 8c 50 06 82 4c 89 ef
e8 cb 64 fb ff <0f> 0b 48 c7 c6 60 53 06 82 4c 89 ff e8 ba 64 fb ff 0f 0b e8 23
<1>[220723.493137] RIP: split_huge_page_to_list+0x7b5/0x8d0 RSP:
ffffc900311d76a0
<4>[220723.493731] ---[ end trace 74a2900540d3546c ]---
<5>[220723.494322] ---[ now 2018-12-24 07:08:37+03 ]---
with this debug patch on top of 4.14.94
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2651,12 +2651,14 @@ int split_huge_page_to_list(struct page *page, struct
list_head *list)
ret = 0;
} else {
if (IS_ENABLED(CONFIG_DEBUG_VM) && mapcount) {
+ int i;
+
pr_alert("total_mapcount: %u, page_count(): %u\n",
mapcount, count);
- if (PageTail(page))
- dump_page(head, NULL);
- dump_page(page, "total_mapcount(head) > 0");
- BUG();
+ for (i = 0; i < HPAGE_PMD_NR; i++)
+ if (!i || (atomic_read(&head[i]._mapcount) + 1))
+ dump_page(head + i, "mapcount > 0");
+ WARN_ON(1);
}
spin_unlock(&pgdata->split_queue_lock);
fail: if (mapping)
I've that some tail pages are still mapped:
huge_memory: total_mapcount: 63, page_count(): 576
page:ffffea007b588000 count:576 mapcount:0 mapping:ffff8897a557c4a0 index:0x0
compound_mapcount: 0
flags:
0x50000000004807d(locked|referenced|uptodate|dirty|lru|active|head|swapbacked)
raw: 050000000004807d ffff8897a557c4a0 0000000000000000 00000240ffffffff
raw: ffffea0063818020 ffffea008a67a020 0000000000000000 ffff88af2e528800
page dumped because: mapcount > 0
page->mem_cgroup:ffff88af2e528800
page:ffffea007b588f80 count:0 mapcount:1 mapping:dead000000000400 index:0x3e
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b588fc0 count:0 mapcount:1 mapping:dead000000000400 index:0x3f
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589000 count:0 mapcount:1 mapping:dead000000000400 index:0x40
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589040 count:0 mapcount:1 mapping:dead000000000400 index:0x41
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589080 count:0 mapcount:1 mapping:dead000000000400 index:0x42
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5890c0 count:0 mapcount:1 mapping:dead000000000400 index:0x43
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589100 count:0 mapcount:1 mapping:dead000000000400 index:0x44
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589140 count:0 mapcount:1 mapping:dead000000000400 index:0x45
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589180 count:0 mapcount:1 mapping:dead000000000400 index:0x46
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5891c0 count:0 mapcount:1 mapping:dead000000000400 index:0x47
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589200 count:0 mapcount:1 mapping:dead000000000400 index:0x48
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589240 count:0 mapcount:1 mapping:dead000000000400 index:0x49
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589280 count:0 mapcount:1 mapping:dead000000000400 index:0x4a
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5892c0 count:0 mapcount:1 mapping:dead000000000400 index:0x4b
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589300 count:0 mapcount:1 mapping:dead000000000400 index:0x4c
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589340 count:0 mapcount:1 mapping:dead000000000400 index:0x4d
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589380 count:0 mapcount:1 mapping:dead000000000400 index:0x4e
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5893c0 count:0 mapcount:1 mapping:dead000000000400 index:0x4f
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589400 count:0 mapcount:1 mapping:dead000000000400 index:0x50
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589440 count:0 mapcount:1 mapping:dead000000000400 index:0x51
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589480 count:0 mapcount:1 mapping:dead000000000400 index:0x52
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5894c0 count:0 mapcount:1 mapping:dead000000000400 index:0x53
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589500 count:0 mapcount:1 mapping:dead000000000400 index:0x54
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589540 count:0 mapcount:1 mapping:dead000000000400 index:0x55
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589580 count:0 mapcount:1 mapping:dead000000000400 index:0x56
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5895c0 count:0 mapcount:1 mapping:dead000000000400 index:0x57
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589600 count:0 mapcount:1 mapping:dead000000000400 index:0x58
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589640 count:0 mapcount:1 mapping:dead000000000400 index:0x59
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589680 count:0 mapcount:1 mapping:dead000000000400 index:0x5a
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5896c0 count:0 mapcount:1 mapping:dead000000000400 index:0x5b
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589700 count:0 mapcount:1 mapping:dead000000000400 index:0x5c
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589740 count:0 mapcount:1 mapping:dead000000000400 index:0x5d
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589780 count:0 mapcount:1 mapping:dead000000000400 index:0x5e
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5897c0 count:0 mapcount:1 mapping:dead000000000400 index:0x5f
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589800 count:0 mapcount:1 mapping:dead000000000400 index:0x60
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589840 count:0 mapcount:1 mapping:dead000000000400 index:0x61
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589880 count:0 mapcount:1 mapping:dead000000000400 index:0x62
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5898c0 count:0 mapcount:1 mapping:dead000000000400 index:0x63
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589900 count:0 mapcount:1 mapping:dead000000000400 index:0x64
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589940 count:0 mapcount:1 mapping:dead000000000400 index:0x65
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589980 count:0 mapcount:1 mapping:dead000000000400 index:0x66
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b5899c0 count:0 mapcount:1 mapping:dead000000000400 index:0x67
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589a00 count:0 mapcount:1 mapping:dead000000000400 index:0x68
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589a40 count:0 mapcount:1 mapping:dead000000000400 index:0x69
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589a80 count:0 mapcount:1 mapping:dead000000000400 index:0x6a
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589ac0 count:0 mapcount:1 mapping:dead000000000400 index:0x6b
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589b00 count:0 mapcount:1 mapping:dead000000000400 index:0x6c
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589b40 count:0 mapcount:1 mapping:dead000000000400 index:0x6d
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589b80 count:0 mapcount:1 mapping:dead000000000400 index:0x6e
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589bc0 count:0 mapcount:1 mapping:dead000000000400 index:0x6f
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589c00 count:0 mapcount:1 mapping:dead000000000400 index:0x70
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589c40 count:0 mapcount:1 mapping:dead000000000400 index:0x71
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589c80 count:0 mapcount:1 mapping:dead000000000400 index:0x72
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589cc0 count:0 mapcount:1 mapping:dead000000000400 index:0x73
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589d00 count:0 mapcount:1 mapping:dead000000000400 index:0x74
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589d40 count:0 mapcount:1 mapping:dead000000000400 index:0x75
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589d80 count:0 mapcount:1 mapping:dead000000000400 index:0x76
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589dc0 count:0 mapcount:1 mapping:dead000000000400 index:0x77
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589e00 count:0 mapcount:1 mapping:dead000000000400 index:0x78
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589e40 count:0 mapcount:1 mapping:dead000000000400 index:0x79
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589e80 count:0 mapcount:1 mapping:dead000000000400 index:0x7a
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589ec0 count:0 mapcount:1 mapping:dead000000000400 index:0x7b
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
page:ffffea007b589f00 count:0 mapcount:1 mapping:dead000000000400 index:0x7c
compound_mapcount: 0
flags: 0x500000000000000()
raw: 0500000000000000 dead000000000400 0000000000000001 0000000000000000
raw: ffffea007b588001 dead000000000200 0000000000000000 0000000000000000
page dumped because: mapcount > 0
------------[ cut here ]------------
WARNING: CPU: 5 PID: 237 at mm/huge_memory.c:2661
split_huge_page_to_list+0x790/0x8e0
Modules linked in: overlay tcp_nv i2c_i801 binfmt_misc veth ipt_REJECT nf_reject_ipv4 ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common
xt_LOG nf_conntrack_ipv6 nf_defrag_ipv6 xt_u32 ip6table_raw xt_conntrack xt_tcpudp xt_CT nf_conntrack iptable_raw xt_multiport
ip6table_filter iptable_filter ip6_tables ip_tables x_tables tcp_htcp ip6_tunnel tunnel6 tcp_bbr sch_fq_codel sch_hfsc netconsole tcp_diag
inet_diag unix_diag configfs 8021q garp mrp stp llc intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp ipmi_ssif coretemp kvm_intel
kvm irqbypass input_leds ghash_clmulni_intel ipmi_si ipmi_devintf ioatdma ipmi_msghandler lpc_ich mfd_core shpchp mlx4_en mlx4_core devlink
autofs4 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath
linear raid10 mgag200 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm isci igb drm dca libsas ptp scsi_transport_sas
pps_core i2c_algo_bit wmi [last unloaded: netconsole]
CPU: 5 PID: 237 Comm: kswapd0 Not tainted 4.14.94-38 #1
Hardware name: Supermicro X9DRW/X9DRW, BIOS 3.0c 10/30/2014
task: ffff8898149ae3c0 task.stack: ffffc9000d734000
RIP: 0010:split_huge_page_to_list+0x790/0x8e0
RSP: 0018:ffffc9000d737b68 EFLAGS: 00010046
RAX: 00000000ffffffff RBX: ffff8897a557c4a0 RCX: 0000000000000006
RDX: ffffea007b590000 RSI: 0000000000000000 RDI: ffff88981fb55730
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000100e
R10: ffffc9000d737b58 R11: 0000000000000001 R12: 0000000000000200
R13: ffff88b07fff8000 R14: 0000000000000286 R15: ffffea007b588000
FS: 0000000000000000(0000) GS:ffff88981fb40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7b0f746018 CR3: 000000000220a006 CR4: 00000000001606e0
Call Trace:
? find_get_entry+0x20/0x140
shmem_unused_huge_shrink+0x184/0x3f0
super_cache_scan+0x184/0x190
shrink_slab.part.54+0x1c2/0x3f0
shrink_node+0x468/0x480
balance_pgdat+0x176/0x340
kswapd+0x1ba/0x440
? wait_woken+0xb0/0xb0
kthread+0x10a/0x140
? balance_pgdat+0x340/0x340
? kthread_create_on_node+0x40/0x40
ret_from_fork+0x35/0x40
Code: ff 74 17 48 89 d7 48 c7 c6 c4 5a 06 82 48 89 14 24 e8 b5 63 fb ff 48 8b 14 24 41 83 c4 01 48 83 c2 40 41 81 fc 00 02 00 00 75 cb <0f>
0b 41 c6 85 c4 45 00 00 00 65 ff 0d cf 74 dd 7e 48 85 db 0f
---[ end trace 4c5fba0af251fbf4 ]---
---
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