https://bugzilla.kernel.org/show_bug.cgi?id=215804 --- Comment #10 from Zorro Lang (zlang@xxxxxxxxxx) --- (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 -- You may reply to this email to add a comment. 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