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SubjectWarnings when suspending to disk
Hi

The commit 7f99cb5e60392fc3494c610776e733b68784280c ("x86/CPU/AMD: Use
default_groups in kobj_type") causes the following warnings to be printed
during suspend to disk and resume from disk. There are many of these
warnings, 3 for each core.

The machine is two six-core Opterons 8435.

Mikulas


[ 31.349584] PM: hibernation: hibernation entry
[ 31.350319] Filesystems sync: 0.000 seconds
[ 31.350417] Freezing user space processes ... (elapsed 0.001 seconds) done.
[ 31.351994] OOM killer disabled.
[ 31.357889] PM: hibernation: Preallocating image memory
[ 34.791852] PM: hibernation: Allocated 735563 pages for snapshot
[ 34.792065] PM: hibernation: Allocated 2942252 kbytes in 3.43 seconds (857.79 MB/s)
[ 34.792296] Freezing remaining freezable tasks ... (elapsed 0.000 seconds) done.
[ 34.793791] printk: Suspending console(s) (use no_console_suspend to debug)
[ 34.795159] serial 00:03: disabled
[ 34.795248] serial 00:02: disabled
[ 34.824316] mptbase: ioc0: pci-suspend: pdev=0x00000000f4bc4e1a, slot=0000:02:06.0, Entering operating state [D3]
[ 35.470390] amdgpu 0000:07:00.0: amdgpu: BACO reset
[ 35.533783] Disabling non-boot CPUs ...
[ 35.535798] smpboot: CPU 1 is now offline
[ 35.537754] ------------[ cut here ]------------
[ 35.537764] kernfs: can not remove 'threshold_limit', no directory
[ 35.537789] WARNING: CPU: 2 PID: 21 at fs/kernfs/dir.c:1555 kernfs_remove_by_name_ns+0xa9/0xc0
[ 35.537812] Modules linked in: ipt_REJECT nf_reject_ipv4 hid_generic nft_chain_nat xt_MASQUERADE xt_tcpudp nft_compat nf_tables libcrc32c crc32c_generic nfnetlink snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer usbhid snd hid soundcore cpufreq_userspace cpufreq_ondemand cpufreq_powersave cpufreq_conservative bridge stp llc ohci_pci amd64_edac edac_mce_amd kvm_amd tg3 ohci_hcd ehci_pci ptp ehci_hcd e100 pps_core kvm mii usbcore pata_serverworks k10temp irqbypass libphy i2c_piix4 usb_common pcspkr rtc_cmos floppy acpi_cpufreq processor button mousedev dmi_sysfs nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 lm85 hwmon_vid fuse configfs ip_tables x_tables ipv6 autofs4 spadfs amdgpu drm_ttm_helper ttm hwmon gpu_sched i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm evdev fb font fbdev drm_panel_orientation_quirks backlight
[ 35.537994] CPU: 2 PID: 21 Comm: cpuhp/2 Not tainted 5.17.0-rc2 #1
[ 35.538003] Hardware name: empty empty/S3992-E, BIOS 'V1.06 ' 06/09/2009
[ 35.538008] RIP: 0010:kernfs_remove_by_name_ns+0xa9/0xc0
[ 35.538052] Code: 4c 8b 6c 24 10 4c 8b 74 24 18 48 83 c4 20 c3 4c 89 e7 e8 ba d1 de ff b8 fe ff ff ff eb d9 48 c7 c7 70 6f d6 81 e8 95 30 31 00 <0f> 0b b8 fe ff ff ff eb c4 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
[ 35.538060] RSP: 0018:ffff8881036d7d80 EFLAGS: 00010282
[ 35.538067] RAX: 0000000000000036 RBX: ffffffff820320c8 RCX: ffff88900fc9b3c8
[ 35.538071] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff88900fc9b3c0
[ 35.538076] RBP: 0000000000000000 R08: ffffffff8204da60 R09: 64206f6e202c2774
[ 35.538080] R10: 726964206f6e202c R11: 2774696d696c5f64 R12: ffffffff81c0d820
[ 35.538084] R13: ffffffff81d3b89a R14: ffff888103e04800 R15: ffff88900fd751f0
[ 35.538089] FS: 0000000000000000(0000) GS:ffff88900fc80000(0000) knlGS:0000000000000000
[ 35.538095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 35.538099] CR2: 00007f8bc5d4f4b0 CR3: 0000000150296000 CR4: 00000000000006e0
[ 35.538104] Call Trace:
[ 35.538110] <TASK>
[ 35.538115] remove_files+0x26/0x60
[ 35.538124] sysfs_remove_group+0x41/0xa0
[ 35.538131] sysfs_remove_groups+0x23/0x40
[ 35.538137] __kobject_del+0x1b/0xa0
[ 35.538146] kobject_del+0xf/0x20
[ 35.538153] mce_threshold_remove_device+0xd4/0x1c0
[ 35.538164] mce_cpu_pre_down+0x5c/0x70
[ 35.538170] ? mce_enable_ce+0x40/0x40
[ 35.538176] cpuhp_invoke_callback+0x2bd/0x460
[ 35.538185] ? __schedule+0x232/0x630
[ 35.538195] ? smpboot_register_percpu_thread+0xd0/0xd0
[ 35.538204] cpuhp_thread_fun+0x75/0x120
[ 35.538212] smpboot_thread_fn+0xc3/0x1c0
[ 35.538220] kthread+0xd1/0x100
[ 35.538229] ? kthread_complete_and_exit+0x20/0x20
[ 35.538238] ret_from_fork+0x1f/0x30
[ 35.538248] </TASK>
[ 35.538250] ---[ end trace 0000000000000000 ]---
[ 35.538254] ------------[ cut here ]------------
[ 35.538256] kernfs: can not remove 'error_count', no directory
[ 35.538271] WARNING: CPU: 2 PID: 21 at fs/kernfs/dir.c:1555 kernfs_remove_by_name_ns+0xa9/0xc0
[ 35.538283] Modules linked in: ipt_REJECT nf_reject_ipv4 hid_generic nft_chain_nat xt_MASQUERADE xt_tcpudp nft_compat nf_tables libcrc32c crc32c_generic nfnetlink snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer usbhid snd hid soundcore cpufreq_userspace cpufreq_ondemand cpufreq_powersave cpufreq_conservative bridge stp llc ohci_pci amd64_edac edac_mce_amd kvm_amd tg3 ohci_hcd ehci_pci ptp ehci_hcd e100 pps_core kvm mii usbcore pata_serverworks k10temp irqbypass libphy i2c_piix4 usb_common pcspkr rtc_cmos floppy acpi_cpufreq processor button mousedev dmi_sysfs nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 lm85 hwmon_vid fuse configfs ip_tables x_tables ipv6 autofs4 spadfs amdgpu drm_ttm_helper ttm hwmon gpu_sched i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm evdev fb font fbdev drm_panel_orientation_quirks backlight
[ 35.538429] CPU: 2 PID: 21 Comm: cpuhp/2 Tainted: G W 5.17.0-rc2 #1
[ 35.538436] Hardware name: empty empty/S3992-E, BIOS 'V1.06 ' 06/09/2009
[ 35.538438] RIP: 0010:kernfs_remove_by_name_ns+0xa9/0xc0
[ 35.538447] Code: 4c 8b 6c 24 10 4c 8b 74 24 18 48 83 c4 20 c3 4c 89 e7 e8 ba d1 de ff b8 fe ff ff ff eb d9 48 c7 c7 70 6f d6 81 e8 95 30 31 00 <0f> 0b b8 fe ff ff ff eb c4 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
[ 35.538453] RSP: 0018:ffff8881036d7d80 EFLAGS: 00010282
[ 35.538459] RAX: 0000000000000032 RBX: ffffffff820320d0 RCX: ffff88900fc9b3c8
[ 35.538463] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff88900fc9b3c0
[ 35.538467] RBP: 0000000000000000 R08: ffffffff8204da60 R09: 64206f6e202c2774
[ 35.538471] R10: 6f74636572696420 R11: 6f6e202c27746e75 R12: ffffffff81c0d820
[ 35.538475] R13: ffffffff81d3b8bb R14: ffff888103e04800 R15: ffff88900fd751f0
[ 35.538479] FS: 0000000000000000(0000) GS:ffff88900fc80000(0000) knlGS:0000000000000000
[ 35.538484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 35.538488] CR2: 00007f8bc5d4f4b0 CR3: 0000000150296000 CR4: 00000000000006e0
[ 35.538493] Call Trace:
[ 35.538494] <TASK>
[ 35.538497] remove_files+0x26/0x60
[ 35.538503] sysfs_remove_group+0x41/0xa0
[ 35.538509] sysfs_remove_groups+0x23/0x40
[ 35.538515] __kobject_del+0x1b/0xa0
[ 35.538521] kobject_del+0xf/0x20
[ 35.538527] mce_threshold_remove_device+0xd4/0x1c0
[ 35.538535] mce_cpu_pre_down+0x5c/0x70
[ 35.538540] ? mce_enable_ce+0x40/0x40
[ 35.538545] cpuhp_invoke_callback+0x2bd/0x460
[ 35.538553] ? __schedule+0x232/0x630
[ 35.538562] ? smpboot_register_percpu_thread+0xd0/0xd0
[ 35.538569] cpuhp_thread_fun+0x75/0x120
[ 35.538577] smpboot_thread_fn+0xc3/0x1c0
[ 35.538585] kthread+0xd1/0x100
[ 35.538592] ? kthread_complete_and_exit+0x20/0x20
[ 35.538601] ret_from_fork+0x1f/0x30
[ 35.538609] </TASK>
[ 35.538611] ---[ end trace 0000000000000000 ]---
[ 35.538614] ------------[ cut here ]------------
[ 35.538615] kernfs: can not remove 'interrupt_enable', no directory
[ 35.538629] WARNING: CPU: 2 PID: 21 at fs/kernfs/dir.c:1555 kernfs_remove_by_name_ns+0xa9/0xc0
[ 35.538641] Modules linked in: ipt_REJECT nf_reject_ipv4 hid_generic nft_chain_nat xt_MASQUERADE xt_tcpudp nft_compat nf_tables libcrc32c crc32c_generic nfnetlink snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer usbhid snd hid soundcore cpufreq_userspace cpufreq_ondemand cpufreq_powersave cpufreq_conservative bridge stp llc ohci_pci amd64_edac edac_mce_amd kvm_amd tg3 ohci_hcd ehci_pci ptp ehci_hcd e100 pps_core kvm mii usbcore pata_serverworks k10temp irqbypass libphy i2c_piix4 usb_common pcspkr rtc_cmos floppy acpi_cpufreq processor button mousedev dmi_sysfs nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 lm85 hwmon_vid fuse configfs ip_tables x_tables ipv6 autofs4 spadfs amdgpu drm_ttm_helper ttm hwmon gpu_sched i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm evdev fb font fbdev drm_panel_orientation_quirks backlight
[ 35.538785] CPU: 2 PID: 21 Comm: cpuhp/2 Tainted: G W 5.17.0-rc2 #1
[ 35.538791] Hardware name: empty empty/S3992-E, BIOS 'V1.06 ' 06/09/2009
[ 35.538794] RIP: 0010:kernfs_remove_by_name_ns+0xa9/0xc0
[ 35.538803] Code: 4c 8b 6c 24 10 4c 8b 74 24 18 48 83 c4 20 c3 4c 89 e7 e8 ba d1 de ff b8 fe ff ff ff eb d9 48 c7 c7 70 6f d6 81 e8 95 30 31 00 <0f> 0b b8 fe ff ff ff eb c4 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
[ 35.538808] RSP: 0018:ffff8881036d7d80 EFLAGS: 00010282
[ 35.538813] RAX: 0000000000000037 RBX: ffffffff820320d8 RCX: ffff88900fc9b3c8
[ 35.538817] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff88900fc9b3c0
[ 35.538821] RBP: 0000000000000000 R08: ffffffff8204da60 R09: 64206f6e202c2765
[ 35.538825] R10: 6964206f6e202c27 R11: 656c62616e655f74 R12: ffffffff81c0d820
[ 35.538829] R13: ffffffff81d3b8aa R14: ffff888103e04800 R15: ffff88900fd751f0
[ 35.538833] FS: 0000000000000000(0000) GS:ffff88900fc80000(0000) knlGS:0000000000000000
[ 35.538838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 35.538842] CR2: 00007f8bc5d4f4b0 CR3: 0000000150296000 CR4: 00000000000006e0
[ 35.538846] Call Trace:
[ 35.538848] <TASK>
[ 35.538850] remove_files+0x26/0x60
[ 35.538856] sysfs_remove_group+0x41/0xa0
[ 35.538862] sysfs_remove_groups+0x23/0x40
[ 35.538868] __kobject_del+0x1b/0xa0
[ 35.538874] kobject_del+0xf/0x20
[ 35.538880] mce_threshold_remove_device+0xd4/0x1c0
[ 35.538887] mce_cpu_pre_down+0x5c/0x70
[ 35.538893] ? mce_enable_ce+0x40/0x40
[ 35.538897] cpuhp_invoke_callback+0x2bd/0x460
[ 35.538905] ? __schedule+0x232/0x630
[ 35.538914] ? smpboot_register_percpu_thread+0xd0/0xd0
[ 35.538922] cpuhp_thread_fun+0x75/0x120
[ 35.538929] smpboot_thread_fn+0xc3/0x1c0
[ 35.538937] kthread+0xd1/0x100
[ 35.538944] ? kthread_complete_and_exit+0x20/0x20
[ 35.538953] ret_from_fork+0x1f/0x30
[ 35.538961] </TASK>
[ 35.538963] ---[ end trace 0000000000000000 ]---

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