[Bug 215804] [xfstests generic/670] Unable to handle kernel paging request at virtual address fffffbffff000008

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215804

--- Comment #10 from Zorro Lang (zlang@redhat.com) ---
(In reply to Matthew Wilcox from comment #9)
> Created attachment 300704 [details]
> Proposed fix
> 
> Please test on arm64; generic/670 passes on x86-64 with this patch, but then
> it passed before.

Hi Matthew,

The reproducer (of this bug) test passed on aarch64 with this patch. But I just
hit another panic on x86_64 as below[1], by doing regression test(run trinity).

As it's not reproducible 100%, so I'm trying to reproduce it without your
patch. If you think it's another issue, not a regression from your patch, I'll
report another bug to track it.

Thanks,
Zorro

[1]
[  361.335242] futex_wake_op: trinity-c9 tries to shift op by -354; fix this
program 
[  367.675001] futex_wake_op: trinity-c19 tries to shift op by -608; fix this
program 
[  383.028587] page:00000000b6110ce7 refcount:6 mapcount:0
mapping:00000000fd87c1f3 index:0x174 pfn:0x8d6c00 
[  383.039316] head:00000000b6110ce7 order:9 compound_mapcount:0
compound_pincount:0 
[  383.047703] aops:xfs_address_space_operations [xfs] ino:a6 dentry
name:"trinity-testfile2" 
[  383.057131] flags:
0x57ffffc0012005(locked|uptodate|private|head|node=1|zone=2|lastcpupid=0x1fffff) 
[  383.067258] raw: 0057ffffc0012005 0000000000000000 dead000000000122
ffff888136653410 
[  383.075925] raw: 0000000000000174 ffff88810bee5900 00000006ffffffff
0000000000000000 
[  383.084589] page dumped because: VM_BUG_ON_FOLIO(folio_nr_pages(old) !=
nr_pages) 
[  383.092987] ------------[ cut here ]------------ 
[  383.098154] kernel BUG at mm/memcontrol.c:6857! 
[  383.103235] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI 
[  383.109456] CPU: 16 PID: 22651 Comm: trinity-c14 Kdump: loaded Not tainted
5.18.0-rc1+ #1 
[  383.118586] Hardware name: Dell Inc. PowerEdge R430/0CN7X8, BIOS 2.8.0
05/23/2018 
[  383.126938] RIP: 0010:mem_cgroup_migrate+0x21f/0x300 
[  383.132483] Code: 48 89 ef e8 73 78 e7 ff 0f 0b 48 c7 c6 20 0a d8 94 48 89
ef e8 62 78 e7 ff 0f 0b 48 c7 c6 80 0a d8 94 48 89 ef e8 51 78 e7 ff <0f> 0b e8
9a 2b ba ff 89 de 4c 89 ef e8 c0 3c ff ff 48 89 ea 48 b8 
[  383.153442] RSP: 0018:ffffc90023f1f6f8 EFLAGS: 00010282 
[  383.159275] RAX: 0000000000000045 RBX: 0000000000000200 RCX:
0000000000000000 
[  383.167239] RDX: 0000000000000001 RSI: ffffffff94ea1540 RDI:
fffff520047e3ecf 
[  383.175202] RBP: ffffea00235b0000 R08: 0000000000000045 R09:
ffff8888091fda47 
[  383.183165] R10: ffffed110123fb48 R11: 0000000000000001 R12:
ffffea0005f59b00 
[  383.191130] R13: 0000000000000000 R14: ffffea00235b0034 R15:
ffff88810bee5900 
[  383.199094] FS:  00007fda9afb2740(0000) GS:ffff888809000000(0000)
knlGS:0000000000000000 
[  383.208123] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 
[  383.214535] CR2: 00007fda9a36c07c CR3: 0000000182c78001 CR4:
00000000003706e0 
[  383.222498] DR0: 00007fda9aecd000 DR1: 00007fda9aece000 DR2:
0000000000000000 
[  383.230461] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
00000000000f0602 
[  383.238424] Call Trace: 
[  383.241151]  <TASK> 
[  383.243490]  iomap_migrate_page+0xdc/0x490 
[  383.248068]  move_to_new_page+0x1fa/0xdf0 
[  383.252545]  ? remove_migration_ptes+0xf0/0xf0 
[  383.257497]  ? try_to_migrate+0x13d/0x260 
[  383.261975]  ? try_to_unmap+0x150/0x150 
[  383.266248]  ? try_to_unmap_one+0x1cd0/0x1cd0 
[  383.271110]  ? anon_vma_ctor+0xe0/0xe0 
[  383.275294]  ? page_get_anon_vma+0x240/0x240 
[  383.280064]  __unmap_and_move+0xc38/0x1090 
[  383.284638]  ? unmap_and_move_huge_page+0x1210/0x1210 
[  383.290278]  ? __lock_release+0x4bd/0x9f0 
[  383.294759]  ? alloc_migration_target+0x267/0x8d0 
[  383.300015]  unmap_and_move+0xd6/0xe50 
[  383.304209]  ? migrate_page+0x250/0x250 
[  383.308496]  migrate_pages+0x6c5/0x12a0 
[  383.312778]  ? migrate_page+0x250/0x250 
[  383.317063]  ? buffer_migrate_page_norefs+0x10/0x10 
[  383.322510]  ? sched_clock_cpu+0x15/0x1b0 
[  383.326991]  move_pages_and_store_status.isra.0+0xe9/0x1b0 
[  383.333117]  ? migrate_pages+0x12a0/0x12a0 
[  383.337692]  ? __might_fault+0xb8/0x160 
[  383.341979]  do_pages_move+0x343/0x450 
[  383.346166]  ? move_pages_and_store_status.isra.0+0x1b0/0x1b0 
[  383.352587]  ? find_mm_struct+0x353/0x5c0 
[  383.357065]  kernel_move_pages+0x13c/0x1e0 
[  383.361641]  ? do_pages_move+0x450/0x450 
[  383.366024]  ? ktime_get_coarse_real_ts64+0x128/0x160 
[  383.371666]  ? lockdep_hardirqs_on+0x79/0x100 
[  383.376530]  ? ktime_get_coarse_real_ts64+0x128/0x160 
[  383.382176]  __x64_sys_move_pages+0xdc/0x1b0 
[  383.386951]  ? syscall_trace_enter.constprop.0+0x179/0x250 
[  383.393081]  do_syscall_64+0x3b/0x90 
[  383.397064]  entry_SYSCALL_64_after_hwframe+0x44/0xae 
[  383.402706] RIP: 0033:0x7fda9ac43dfd 
[  383.406698] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89
f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 8b 0d fb 5f 1b 00 f7 d8 64 89 01 48 
[  383.427647] RSP: 002b:00007ffde3a9cb48 EFLAGS: 00000246 ORIG_RAX:
0000000000000117 
[  383.436092] RAX: ffffffffffffffda RBX: 0000000000000002 RCX:
00007fda9ac43dfd 
[  383.444057] RDX: 00000000022b0760 RSI: 0000000000000038 RDI:
0000000000000000 
[  383.452020] RBP: 00007fda9af49000 R08: 00000000022ac6f0 R09:
0000000000000000 
[  383.459983] R10: 00000000022ac600 R11: 0000000000000246 R12:
0000000000000117 
[  383.467946] R13: 00007fda9afb26c0 R14: 00007fda9af49058 R15:
00007fda9af49000 
[  383.475917]  </TASK> 
[  383.478355] Modules linked in: 8021q garp mrp bridge stp llc vsock_loopback
vmw_vsock_virtio_transport_common ieee802154_socket ieee802154
vmw_vsock_vmci_transport vsock vmw_vmci mpls_router ip_tunnel af_key qrtr hidp
bnep rfcomm bluetooth can_bcm can_raw can pptp gre l2tp_ppp l2tp_netlink
l2tp_core pppoe pppox ppp_generic slhc crypto_user ib_core nfnetlink
scsi_transport_iscsi atm sctp ip6_udp_tunnel udp_tunnel tls iTCO_wdt
iTCO_vendor_support intel_rapl_msr dell_wmi_descriptor video dcdbas
intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common sb_edac
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm mgag200
i2c_algo_bit drm_shmem_helper drm_kms_helper irqbypass rapl intel_cstate
intel_uncore syscopyarea rfkill sysfillrect mei_me sysimgblt joydev fb_sys_fops
pcspkr ipmi_ssif mxm_wmi mei lpc_ich ipmi_si ipmi_devintf ipmi_msghandler
acpi_power_meter sunrpc drm fuse xfs libcrc32c sd_mod t10_pi
crc64_rocksoft_generic crc64_rocksoft crc64 sg crct10dif_pclmul 
[  383.478527]  crc32_pclmul crc32c_intel ahci ghash_clmulni_intel libahci
libata tg3 megaraid_sas wmi 
[  383.585790] ---[ end trace 0000000000000000 ]--- 
[  383.611622] RIP: 0010:mem_cgroup_migrate+0x21f/0x300 
[  383.617187] Code: 48 89 ef e8 73 78 e7 ff 0f 0b 48 c7 c6 20 0a d8 94 48 89
ef e8 62 78 e7 ff 0f 0b 48 c7 c6 80 0a d8 94 48 89 ef e8 51 78 e7 ff <0f> 0b e8
9a 2b ba ff 89 de 4c 89 ef e8 c0 3c ff ff 48 89 ea 48 b8 
[  383.638159] RSP: 0018:ffffc90023f1f6f8 EFLAGS: 00010282 
[  383.644005] RAX: 0000000000000045 RBX: 0000000000000200 RCX:
0000000000000000 
[  383.651983] RDX: 0000000000000001 RSI: ffffffff94ea1540 RDI:
fffff520047e3ecf 
[  383.659955] RBP: ffffea00235b0000 R08: 0000000000000045 R09:
ffff8888091fda47 
[  383.667927] R10: ffffed110123fb48 R11: 0000000000000001 R12:
ffffea0005f59b00 
[  383.675901] R13: 0000000000000000 R14: ffffea00235b0034 R15:
ffff88810bee5900 
[  383.683875] FS:  00007fda9afb2740(0000) GS:ffff888809000000(0000)
knlGS:0000000000000000 
[  383.692917] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 
[  383.699331] CR2: 00007fda9a36c07c CR3: 0000000182c78001 CR4:
00000000003706e0 
[  383.707303] DR0: 00007fda9aecd000 DR1: 00007fda9aece000 DR2:
0000000000000000 
[  383.715281] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
00000000000f0602 
[  385.747373] trinity-main (14692) used greatest stack depth: 20912 bytes left

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