Re: regression: nfs mount (even idle) eventually hangs server

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

(forgotten CC)

On Wed, 2022-12-21 at 09:59 +0100, Mike Galbraith wrote:
> scenario: /home/mikeg of desktop box mounted by lappy, lappy sitting
> idle with user mikeg not even logged in.  Reclaim inducing activity
> on
> desktop box eventually leads to spew below.  I've hung the box three
> times in two days, twice with light client side activity, and below
> with none, ie with the mount point allegedly merely existing. Sans
> nfs
> mount, box seems perfectly fine. 6.1 didn't reproduce either, so it
> would appear to be a merge window bug.
>
> [ 1171.959773] ------------[ cut here ]------------
> [ 1171.959792] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1654
> __queue_delayed_work+0x6a/0x90
> [ 1171.959804] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.959869]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.959962] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G            E      6.1.0.g6feb57c-master #41
> [ 1171.959969] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.959972] RIP: 0010:__queue_delayed_work+0x6a/0x90
> [ 1171.959981] Code: 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7
> e9 1b b1 07 00 e9 46 e8 ff ff 0f 0b eb cc 0f 0b 48 81 7a 38 20 32 0a
> 81 74 aa <0f> 0b 48 8b 42 28 48 85 c0 74 a8 0f 0b eb a4 89 fe 4c 89
> c7 e9 1d
> [ 1171.959988] RSP: 0018:ffff8881010a7c78 EFLAGS: 00010003
> [ 1171.959992] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
> 0000000000000000
> [ 1171.959997] RDX: ffff88818016b748 RSI: ffff88810a0bae00 RDI:
> 0000000000000008
> [ 1171.960001] RBP: ffff88818016b748 R08: 0000000000000000 R09:
> 0000000000000000
> [ 1171.960005] R10: 0000000000000000 R11: 000000000354f7fb R12:
> 0000000000000008
> [ 1171.960010] R13: ffff88810a0bae00 R14: 0000000000000000 R15:
> ffff88818016b710
> [ 1171.960015] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.960019] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.960022] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.960026] Call Trace:
> [ 1171.960033]  <TASK>
> [ 1171.960038]  mod_delayed_work_on+0x49/0x70
> [ 1171.960049]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.960113]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.960122]  shrink_node+0x1c5/0x420
> [ 1171.960129]  balance_pgdat+0x25f/0x530
> [ 1171.960137]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960143]  kswapd+0x12c/0x360
> [ 1171.960149]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960155]  ? __pfx_kswapd+0x10/0x10
> [ 1171.960161]  kthread+0xc0/0xe0
> [ 1171.960167]  ? __pfx_kthread+0x10/0x10
> [ 1171.960172]  ret_from_fork+0x29/0x50
> [ 1171.960180]  </TASK>
> [ 1171.960184] ---[ end trace 0000000000000000 ]---
> [ 1171.960190] ------------[ cut here ]------------
> [ 1171.960193] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1656
> __queue_delayed_work+0x5a/0x90
> [ 1171.960202] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.960259]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.960352] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.960358] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.960363] RIP: 0010:__queue_delayed_work+0x5a/0x90
> [ 1171.960369] Code: 8b 05 0a 47 16 01 4c 8d 42 20 48 89 72 48 89 7a
> 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7 e9 1b b1 07 00 e9 46
> e8 ff ff <0f> 0b eb cc 0f 0b 48 81 7a 38 20 32 0a 81 74 aa 0f 0b 48
> 8b 42 28
> [ 1171.960377] RSP: 0018:ffff8881010a7c78 EFLAGS: 00010003
> [ 1171.960383] RAX: ffff88818016b750 RBX: 0000000000000000 RCX:
> 0000000000000000
> [ 1171.960388] RDX: ffff88818016b748 RSI: ffff88810a0bae00 RDI:
> 0000000000000008
> [ 1171.960394] RBP: ffff88818016b748 R08: 0000000000000000 R09:
> 0000000000000000
> [ 1171.960453] R10: 0000000000000000 R11: 000000000354f7fb R12:
> 0000000000000008
> [ 1171.960459] R13: ffff88810a0bae00 R14: 0000000000000000 R15:
> ffff88818016b710
> [ 1171.960463] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.960468] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.960473] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.960478] Call Trace:
> [ 1171.960481]  <TASK>
> [ 1171.960484]  mod_delayed_work_on+0x49/0x70
> [ 1171.960492]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.960542]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.960550]  shrink_node+0x1c5/0x420
> [ 1171.960557]  balance_pgdat+0x25f/0x530
> [ 1171.960564]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960571]  kswapd+0x12c/0x360
> [ 1171.960578]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960583]  ? __pfx_kswapd+0x10/0x10
> [ 1171.960589]  kthread+0xc0/0xe0
> [ 1171.960594]  ? __pfx_kthread+0x10/0x10
> [ 1171.960599]  ret_from_fork+0x29/0x50
> [ 1171.960607]  </TASK>
> [ 1171.960611] ---[ end trace 0000000000000000 ]---
> [ 1171.960617] ------------[ cut here ]------------
> [ 1171.960620] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.960628] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.960687]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.960775] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.960781] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.960787] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.960793] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.960801] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.960807] RAX: ffff88818016b750 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.960811] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.960816] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.960821] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.960826] R13: 0000000000000004 R14: ffff88818016b748 R15:
> ffff888120a5e000
> [ 1171.960831] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.960838] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.960842] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.960848] Call Trace:
> [ 1171.960853]  <TASK>
> [ 1171.960857]  mod_delayed_work_on+0x49/0x70
> [ 1171.960864]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.960912]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.960919]  shrink_node+0x1c5/0x420
> [ 1171.960926]  balance_pgdat+0x25f/0x530
> [ 1171.960932]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960939]  kswapd+0x12c/0x360
> [ 1171.960945]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960950]  ? __pfx_kswapd+0x10/0x10
> [ 1171.960956]  kthread+0xc0/0xe0
> [ 1171.960961]  ? __pfx_kthread+0x10/0x10
> [ 1171.960965]  ret_from_fork+0x29/0x50
> [ 1171.960973]  </TASK>
> [ 1171.960976] ---[ end trace 0000000000000000 ]---
> [ 1171.961009] ------------[ cut here ]------------
> [ 1171.961013] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.961022] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.961079]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.961171] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.961177] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.961183] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.961189] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.961195] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.961200] RAX: ffff8881ecf4b350 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.961207] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.961212] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.961217] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.961222] R13: 0000000000000004 R14: ffff8881ecf4b348 R15:
> ffff888120a5e000
> [ 1171.961226] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.961232] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.961237] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.961242] Call Trace:
> [ 1171.961245]  <TASK>
> [ 1171.961249]  mod_delayed_work_on+0x49/0x70
> [ 1171.961256]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.961306]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.961314]  shrink_node+0x1c5/0x420
> [ 1171.961320]  balance_pgdat+0x25f/0x530
> [ 1171.961326]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.961332]  kswapd+0x12c/0x360
> [ 1171.961338]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.961344]  ? __pfx_kswapd+0x10/0x10
> [ 1171.961349]  kthread+0xc0/0xe0
> [ 1171.961354]  ? __pfx_kthread+0x10/0x10
> [ 1171.961359]  ret_from_fork+0x29/0x50
> [ 1171.961367]  </TASK>
> [ 1171.961370] ---[ end trace 0000000000000000 ]---
> [ 1171.961382] ------------[ cut here ]------------
> [ 1171.961386] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.961395] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.961451]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.961542] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.961548] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.961552] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.961561] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.961568] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.961572] RAX: ffff888198393b50 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.961578] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.961583] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.961589] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.961593] R13: 0000000000000004 R14: ffff888198393b48 R15:
> ffff888120a5e000
> [ 1171.961598] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.961602] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.961606] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.961612] Call Trace:
> [ 1171.961615]  <TASK>
> [ 1171.961619]  mod_delayed_work_on+0x49/0x70
> [ 1171.961625]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.961674]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.961681]  shrink_node+0x1c5/0x420
> [ 1171.961687]  balance_pgdat+0x25f/0x530
> [ 1171.961693]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.961700]  kswapd+0x12c/0x360
> [ 1171.961706]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.961712]  ? __pfx_kswapd+0x10/0x10
> [ 1171.961718]  kthread+0xc0/0xe0
> [ 1171.961723]  ? __pfx_kthread+0x10/0x10
> [ 1171.961728]  ret_from_fork+0x29/0x50
> [ 1171.961735]  </TASK>
> [ 1171.961738] ---[ end trace 0000000000000000 ]---
> [ 1171.961752] ------------[ cut here ]------------
> [ 1171.961757] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.961765] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.961822]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.961911] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.961917] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.961921] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.961927] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.961934] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.961939] RAX: ffff8881058ad350 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.961947] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.961951] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.961955] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.961959] R13: 0000000000000004 R14: ffff8881058ad348 R15:
> ffff888120a5e000
> [ 1171.961964] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.961969] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.961973] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.961978] Call Trace:
> [ 1171.961982]  <TASK>
> [ 1171.961986]  mod_delayed_work_on+0x49/0x70
> [ 1171.961993]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.962041]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.962049]  shrink_node+0x1c5/0x420
> [ 1171.962055]  balance_pgdat+0x25f/0x530
> [ 1171.962063]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.962069]  kswapd+0x12c/0x360
> [ 1171.962074]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.962080]  ? __pfx_kswapd+0x10/0x10
> [ 1171.962085]  kthread+0xc0/0xe0
> [ 1171.962091]  ? __pfx_kthread+0x10/0x10
> [ 1171.962095]  ret_from_fork+0x29/0x50
> [ 1171.962105]  </TASK>
> [ 1171.962108] ---[ end trace 0000000000000000 ]---
> [ 1171.962116] ------------[ cut here ]------------
> [ 1171.962121] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.962129] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.962185]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.962274] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.962280] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.962285] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.962290] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.962296] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.962302] RAX: ffff8881313dab50 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.962306] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.962310] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.962314] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.962319] R13: 0000000000000004 R14: ffff8881313dab48 R15:
> ffff888120a5e000
> [ 1171.962323] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.962328] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.962333] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.962337] Call Trace:
> [ 1171.962341]  <TASK>
> [ 1171.962345]  mod_delayed_work_on+0x49/0x70
> [ 1171.962351]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.962399]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.962406]  shrink_node+0x1c5/0x420
> [ 1171.962413]  balance_pgdat+0x25f/0x530
> [ 1171.962420]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.962427]  kswapd+0x12c/0x360
> [ 1171.962433]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.962438]  ? __pfx_kswapd+0x10/0x10
> [ 1171.962445]  kthread+0xc0/0xe0
> [ 1171.962450]  ? __pfx_kthread+0x10/0x10
> [ 1171.962454]  ret_from_fork+0x29/0x50
> [ 1171.962461]  </TASK>
> [ 1171.962465] ---[ end trace 0000000000000000 ]---
> [ 1171.962471] ------------[ cut here ]------------
> [ 1171.962474] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.962483] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.962539]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.962628] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.962634] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.962638] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.962644] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.962650] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.962655] RAX: ffff888199989f50 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.962660] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.962665] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.962670] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.962674] R13: 0000000000000004 R14: ffff888199989f48 R15:
> ffff888120a5e000
> [ 1171.962681] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.962686] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.962690] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.962695] Call Trace:
> [ 1171.962699]  <TASK>
> [ 1171.962704]  mod_delayed_work_on+0x49/0x70
> [ 1171.962712]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.962760]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.962767]  shrink_node+0x1c5/0x420
> [ 1171.962772]  balance_pgdat+0x25f/0x530
> [ 1171.962780]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.962786]  kswapd+0x12c/0x360
> [ 1171.962791]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.962797]  ? __pfx_kswapd+0x10/0x10
> [ 1171.962802]  kthread+0xc0/0xe0
> [ 1171.962807]  ? __pfx_kthread+0x10/0x10
> [ 1171.962812]  ret_from_fork+0x29/0x50
> [ 1171.962819]  </TASK>
> [ 1171.962823] ---[ end trace 0000000000000000 ]---
> [ 1171.962830] ------------[ cut here ]------------
> [ 1171.962833] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.962841] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.962895]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.962984] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.962990] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.962995] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.963001] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.963009] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.963014] RAX: ffff88814ae67350 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.963019] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.963024] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.963029] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.963034] R13: 0000000000000004 R14: ffff88814ae67348 R15:
> ffff888120a5e000
> [ 1171.963039] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.963045] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.963050] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.963054] Call Trace:
> [ 1171.963058]  <TASK>
> [ 1171.963062]  mod_delayed_work_on+0x49/0x70
> [ 1171.963070]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.963117]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.963124]  shrink_node+0x1c5/0x420
> [ 1171.963130]  balance_pgdat+0x25f/0x530
> [ 1171.963136]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.963142]  kswapd+0x12c/0x360
> [ 1171.963148]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.963153]  ? __pfx_kswapd+0x10/0x10
> [ 1171.963160]  kthread+0xc0/0xe0
> [ 1171.963165]  ? __pfx_kthread+0x10/0x10
> [ 1171.963170]  ret_from_fork+0x29/0x50
> [ 1171.963176]  </TASK>
> [ 1171.963180] ---[ end trace 0000000000000000 ]---
> [ 1171.963188] ------------[ cut here ]------------
> [ 1171.963192] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.963200] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.963255]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.963342] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.963348] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.963352] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.963358] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.963364] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.963370] RAX: ffff888191ea9f50 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.963374] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.963379] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.963384] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.963389] R13: 0000000000000004 R14: ffff888191ea9f48 R15:
> ffff888120a5e000
> [ 1171.963394] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.963399] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.963404] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.963408] Call Trace:
> [ 1171.963412]  <TASK>
> [ 1171.963416]  mod_delayed_work_on+0x49/0x70
> [ 1171.963423]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.963471]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.963478]  shrink_node+0x1c5/0x420
> [ 1171.963484]  balance_pgdat+0x25f/0x530
> [ 1171.963491]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.963498]  kswapd+0x12c/0x360
> [ 1171.963504]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.963509]  ? __pfx_kswapd+0x10/0x10
> [ 1171.963515]  kthread+0xc0/0xe0
> [ 1171.963520]  ? __pfx_kthread+0x10/0x10
> [ 1171.963524]  ret_from_fork+0x29/0x50
> [ 1171.963531]  </TASK>
> [ 1171.963535] ---[ end trace 0000000000000000 ]---
> [ 1171.963542] ------------[ cut here ]------------
> [ 1171.963546] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.963554] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.963609]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.963697] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.963703] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.963709] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.963715] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.963721] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.963726] RAX: ffff8881a6e87b50 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.963730] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.963735] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.963740] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.963744] R13: 0000000000000004 R14: ffff8881a6e87b48 R15:
> ffff888120a5e000
> [ 1171.963748] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.963753] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.963757] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.963762] Call Trace:
> [ 1171.963765]  <TASK>
> [ 1171.963768]  mod_delayed_work_on+0x49/0x70
> [ 1171.963775]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.963819]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.963826]  shrink_node+0x1c5/0x420
> [ 1171.963831]  balance_pgdat+0x25f/0x530
> [ 1171.963837]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.963844]  kswapd+0x12c/0x360
> [ 1171.963850]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.963855]  ? __pfx_kswapd+0x10/0x10
> [ 1171.963860]  kthread+0xc0/0xe0
> [ 1171.963864]  ? __pfx_kthread+0x10/0x10
> [ 1171.963869]  ret_from_fork+0x29/0x50
> [ 1171.963875]  </TASK>
> [ 1171.963878] ---[ end trace 0000000000000000 ]---
> [ 1171.963885] ------------[ cut here ]------------
> [ 1171.963890] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.963897] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.963945]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.964026] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.964032] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.964035] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.964041] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.964046] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.964051] RAX: ffff888198394b50 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.964056] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.964062] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.964066] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.964073] R13: 0000000000000004 R14: ffff888198394b48 R15:
> ffff888120a5e000
> [ 1171.964077] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.964081] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.964086] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.964090] Call Trace:
> [ 1171.964095]  <TASK>
> [ 1171.964099]  mod_delayed_work_on+0x49/0x70
> [ 1171.964106]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.964154]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.964160]  shrink_node+0x1c5/0x420
> [ 1171.964166]  balance_pgdat+0x25f/0x530
> [ 1171.964174]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.964181]  kswapd+0x12c/0x360
> [ 1171.964187]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.964192]  ? __pfx_kswapd+0x10/0x10
> [ 1171.964198]  kthread+0xc0/0xe0
> [ 1171.964202]  ? __pfx_kthread+0x10/0x10
> [ 1171.964207]  ret_from_fork+0x29/0x50
> [ 1171.964213]  </TASK>
> [ 1171.964217] ---[ end trace 0000000000000000 ]---
> [ 1171.964224] ------------[ cut here ]------------
> [ 1171.964229] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499
> __queue_work+0x33b/0x3d0
> [ 1171.964235] Modules linked in: netconsole(E) af_packet(E)
> hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E)
> ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E)
> llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E)
> ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E)
> iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E)
> x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E)
> snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E)
> snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E)
> nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E)
> regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E)
> snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E)
> r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E)
> snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E)
> soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E)
> intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.964287]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E)
> configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E)
> hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)
> i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E)
> crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E)
> sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E)
> aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E)
> crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E)
> cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E)
> sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E)
> crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E)
> virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E)
> loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E)
> scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E)
> efivarfs(E) autofs4(E)
> [ 1171.964371] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.964378] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1171.964382] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.964388] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00
> 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe
> fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff
> 80 3d f3
> [ 1171.964394] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.964399] RAX: ffff88838c101f50 RBX: ffffffff81fcc880 RCX:
> 0000000000000000
> [ 1171.964404] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff888100078000
> [ 1171.964408] RBP: ffff88810a0bae00 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1171.964412] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> 0000000000000008
> [ 1171.964416] R13: 0000000000000004 R14: ffff88838c101f48 R15:
> ffff888120a5e000
> [ 1171.964420] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1171.964425] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.964429] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4:
> 00000000001706e0
> [ 1171.964433] Call Trace:
> [ 1171.964437]  <TASK>
> [ 1171.964442]  mod_delayed_work_on+0x49/0x70
> [ 1171.964450]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.964498]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.964504]  shrink_node+0x1c5/0x420
> [ 1171.964510]  balance_pgdat+0x25f/0x530
> [ 1171.964518]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.964524]  kswapd+0x12c/0x360
> [ 1171.964530]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.964536]  ? __pfx_kswapd+0x10/0x10
> [ 1171.964541]  kthread+0xc0/0xe0
> [ 1171.964545]  ? __pfx_kthread+0x10/0x10
> [ 1171.964551]  ret_from_fork+0x29/0x50
> [ 1171.964559]  </TASK>
> [ 1171.964562] ---[ end trace 0000000000000000 ]---
> [ 1281.909660] rcu: INFO: rcu_sched self-detected stall on CPU
> [ 1281.909674] rcu:     4-...!: (15000 ticks this GP)
> idle=3ee4/1/0x4000000000000000 softirq=437305/437305 fqs=210
> [ 1281.909680]  (t=15000 jiffies g=566765 q=19351 ncpus=8)
> [ 1281.909684] rcu: rcu_sched kthread starved for 14580 jiffies!
> g566765 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=3
> [ 1281.909691] rcu:     Unless rcu_sched kthread gets sufficient CPU
> time, OOM is now expected behavior.
> [ 1281.909695] rcu: RCU grace-period kthread stack dump:
> [ 1281.909697] task:rcu_sched       state:R  running task    
> stack:0     pid:14    ppid:2      flags:0x00004000
> [ 1281.909704] Call Trace:
> [ 1281.909707]  <TASK>
> [ 1281.909710]  __schedule+0x2ba/0x8e0
> [ 1281.909720]  schedule+0x55/0xb0
> [ 1281.909723]  schedule_timeout+0x18d/0x280
> [ 1281.909729]  ? __pfx_process_timeout+0x10/0x10
> [ 1281.909733]  rcu_gp_fqs_loop+0x328/0x3b0
> [ 1281.909738]  ? __pfx_rcu_gp_kthread+0x10/0x10
> [ 1281.909742]  rcu_gp_kthread+0xb6/0x170
> [ 1281.909747]  kthread+0xc0/0xe0
> [ 1281.909752]  ? __pfx_kthread+0x10/0x10
> [ 1281.909756]  ret_from_fork+0x29/0x50
> [ 1281.909762]  </TASK>
> [ 1281.909764] rcu: Stack dump where RCU GP kthread last ran:
> [ 1281.909767] Sending NMI from CPU 4 to CPUs 3:
> [ 1281.909772] NMI backtrace for cpu 3
> [ 1281.909774] CPU: 3 PID: 9 Comm: kworker/u16:0 Kdump: loaded
> Tainted: G        W   E      6.1.0.g6feb57c-master #41
> [ 1281.909776] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1281.909777] Workqueue: writeback wb_workfn (flush-8:48)
> [ 1281.909781] RIP: 0010:native_queued_spin_lock_slowpath+0x47/0x290
> [ 1281.909784] Code: c0 75 f2 5b 5d 41 5c 41 5d c3 cc cc cc cc f3 90
> eb e3 81 fe 00 01 00 00 0f 84 da 00 00 00 40 30 f6 85 f6 75 4f f0 0f
> ba 2f 08 <0f> 92 c0 0f b6 c0 c1 e0 08 89 c2 8b 07 30 e4 09 d0 a9 00
> 01 ff ff
> [ 1281.909785] RSP: 0018:ffff8881008a7418 EFLAGS: 00000046
> [ 1281.909786] RAX: 0000000000000001 RBX: ffff88818016b748 RCX:
> 0000000000000000
> [ 1281.909787] RDX: 0000000000000001 RSI: 0000000000000000 RDI:
> ffff88840ec2d4c0
> [ 1281.909787] RBP: ffff8881008a7470 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1281.909788] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> ffff88840ec2d4c0
> [ 1281.909788] R13: ffff88810a0bae00 R14: 0000000000000000 R15:
> ffff88818016b710
> [ 1281.909789] FS:  0000000000000000(0000) GS:ffff88840ecc0000(0000)
> knlGS:0000000000000000
> [ 1281.909790] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1281.909791] CR2: 0000559bf0ef4034 CR3: 0000000004210003 CR4:
> 00000000001706e0
> [ 1281.909792] Call Trace:
> [ 1281.909792]  <TASK>
> [ 1281.909793]  _raw_spin_lock+0x1e/0x30
> [ 1281.909795]  try_to_grab_pending+0x49/0x120
> [ 1281.909798]  mod_delayed_work_on+0x2d/0x70
> [ 1281.909802]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1281.909842]  shrink_slab.constprop.94+0x9d/0x370
> [ 1281.909845]  shrink_node+0x1c5/0x420
> [ 1281.909847]  try_to_free_pages+0x17b/0x560
> [ 1281.909850]  __alloc_pages_slowpath.constprop.125+0x35d/0xc70
> [ 1281.909853]  __alloc_pages+0x2b3/0x2e0
> [ 1281.909855]  new_slab+0x276/0x360
> [ 1281.909856]  ___slab_alloc+0x217/0x710
> [ 1281.909858]  ? mempool_alloc+0x54/0x160
> [ 1281.909860]  ? ext4_mark_iloc_dirty+0x177/0x600 [ext4]
> [ 1281.909897]  ? mempool_alloc+0x54/0x160
> [ 1281.909898]  kmem_cache_alloc+0x1b6/0x1d0
> [ 1281.909899]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1281.909901]  mempool_alloc+0x54/0x160
> [ 1281.909903]  bio_alloc_bioset+0x1d5/0x3a0
> [ 1281.909906]  ? __pfx_ext4_end_bio+0x10/0x10 [ext4]
> [ 1281.909933]  ext4_bio_write_page+0x49f/0x530 [ext4]
> [ 1281.909956]  mpage_submit_page+0x4c/0x70 [ext4]
> [ 1281.909978]  mpage_map_and_submit_buffers+0x141/0x220 [ext4]
> [ 1281.909998]  ? __check_block_validity.constprop.83+0x3e/0x90
> [ext4]
> [ 1281.910016]  ? ext4_map_blocks+0x1fd/0x5a0 [ext4]
> [ 1281.910035]  ? __cond_resched+0x15/0x30
> [ 1281.910037]  ? kmem_cache_alloc+0xe1/0x1d0
> [ 1281.910038]  ext4_do_writepages+0x60d/0xbc0 [ext4]
> [ 1281.910060]  ? sock_wmalloc+0x60/0x60
> [ 1281.910063]  ? update_group_capacity+0x24/0x220
> [ 1281.910065]  ext4_writepages+0x6a/0xd0 [ext4]
> [ 1281.910085]  do_writepages+0xc8/0x1a0
> [ 1281.910087]  __writeback_single_inode+0x39/0x2d0
> [ 1281.910089]  writeback_sb_inodes+0x1c2/0x480
> [ 1281.910090]  __writeback_inodes_wb+0x5f/0xd0
> [ 1281.910091]  wb_writeback+0x1de/0x250
> [ 1281.910093]  wb_workfn+0x18b/0x3f0
> [ 1281.910094]  ? finish_task_switch+0x87/0x2c0
> [ 1281.910096]  process_one_work+0x1f7/0x3c0
> [ 1281.910098]  worker_thread+0x2d/0x3b0
> [ 1281.910100]  ? __pfx_worker_thread+0x10/0x10
> [ 1281.910102]  kthread+0xc0/0xe0
> [ 1281.910103]  ? __pfx_kthread+0x10/0x10
> [ 1281.910104]  ret_from_fork+0x29/0x50
> [ 1281.910106]  </TASK>
> [ 1281.910764] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted:
> G        W   E      6.1.0.g6feb57c-master #41
> [ 1281.911452] Hardware name: MEDION MS-7848/MS-7848, BIOS
> M7848W08.20C 09/23/2013
> [ 1281.911455] RIP: 0010:try_to_grab_pending+0x79/0x120
> [ 1281.911459] Code: 04 74 11 48 81 e7 00 ff ff ff 49 89 fd 74 05 4c
> 3b 27 74 59 4c 89 e7 c6 07 00 0f 1f 00 48 8b 45 00 f6 c4 02 74 01 fb
> 48 8b 13 <b8> fe ff ff ff 83 e2 14 48 83 fa 10 74 9f f3 90 b8 f5 ff
> ff ff 5b
> [ 1281.911463] RSP: 0018:ffff8881010a7c58 EFLAGS: 00000202
> [ 1281.911466] RAX: 0000000000000246 RBX: ffff88818016b748 RCX:
> 0000000000100000
> [ 1281.911469] RDX: 0000000000000001 RSI: 0000000000100000 RDI:
> ffff88840ec2d4c0
> [ 1281.911471] RBP: ffff8881010a7c80 R08: ffff888100400028 R09:
> ffff888100400000
> [ 1281.911474] R10: 0000000000000000 R11: ffffffff8225d5c8 R12:
> ffff88840ec2d4c0
> [ 1281.911529] R13: ffff88810a0bae00 R14: 0000000000000000 R15:
> ffff88818016b710
> [ 1281.911532] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000)
> knlGS:0000000000000000
> [ 1281.911535] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1281.911538] CR2: 00007fab452688ce CR3: 0000000004210002 CR4:
> 00000000001706e0
> [ 1281.911540] Call Trace:
> [ 1281.911542]  <TASK>
> [ 1281.911545]  mod_delayed_work_on+0x2d/0x70
> [ 1281.911549]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1281.911581]  shrink_slab.constprop.94+0x9d/0x370
> [ 1281.911585]  shrink_node+0x1c5/0x420
> [ 1281.911590]  balance_pgdat+0x25f/0x530
> [ 1281.911594]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1281.911650]  kswapd+0x12c/0x360
> [ 1281.911654]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1281.911658]  ? __pfx_kswapd+0x10/0x10
> [ 1281.911661]  kthread+0xc0/0xe0
> [ 1281.911664]  ? __pfx_kthread+0x10/0x10
> [ 1281.911667]  ret_from_fork+0x29/0x50
> [ 1281.911671]  </TASK>
> [ 1371.224288] sysrq: Resetting
>

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

On Wed, 2022-12-21 at 10:56 +0100, Mike Galbraith wrote:
> > 6.1 didn't reproduce either, so it would appear to be a merge window bug.

Ah, not true, turning evolution loose in nfs mounted home and letting
it refresh mailboxes while desktop box was kept busy jammed up 6.1.0 in
fairly short order.  

homer:..debug/tracing # grep WARNING: /netconsole.log2
[ 3309.873094] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1655 __queue_delayed_work+0x6a/0x90
[ 3309.873446] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1657 __queue_delayed_work+0x5a/0x90
[ 3309.873780] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.874120] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.874452] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.874783] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.875099] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.875426] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.875745] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.876064] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.876383] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0

Sigh.  Ok 6.0, batter up...

	-Mike

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

On Thu, 2022-12-22 at 04:42 +0100, Mike Galbraith wrote:
> On Wed, 2022-12-21 at 10:56 +0100, Mike Galbraith wrote:
> > > 6.1 didn't reproduce either, so it would appear to be a merge window bug.
>
> Ah, not true, turning evolution loose in nfs mounted home and letting
> it refresh mailboxes while desktop box was kept busy jammed up 6.1.0 in
> fairly short order.  

Well crap.  That was _not_ virgin 6.1.0 after all, it was 6.1.0 with...

44df6f439a17 NFSD: add delegation reaper to react to low memory condition
3959066b697b NFSD: add support for sending CB_RECALL_ANY
a1049eb47f20 NFSD: refactoring courtesy_client_reaper to a generic low memory shrinker

...applied from poking about yesterday.  I had given up on those as
culprit, and intended to pop them off and rebuild, but they were in
fact in the booted kernel.  Oh well, booboo could have a bright side.

	-Mike

Re: regression: nfs mount (even idle) eventually hangs server

[Chuck Lever III]

> On Dec 21, 2022, at 11:14 PM, Mike Galbraith <efault@gmx.de> wrote:
> 
> On Thu, 2022-12-22 at 04:42 +0100, Mike Galbraith wrote:
>> On Wed, 2022-12-21 at 10:56 +0100, Mike Galbraith wrote:
>>>> 6.1 didn't reproduce either, so it would appear to be a merge window bug.
>> 
>> Ah, not true, turning evolution loose in nfs mounted home and letting
>> it refresh mailboxes while desktop box was kept busy jammed up 6.1.0 in
>> fairly short order.  
> 
> Well crap.  That was _not_ virgin 6.1.0 after all, it was 6.1.0 with...
> 
> 44df6f439a17 NFSD: add delegation reaper to react to low memory condition
> 3959066b697b NFSD: add support for sending CB_RECALL_ANY
> a1049eb47f20 NFSD: refactoring courtesy_client_reaper to a generic low memory shrinker
> 
> ...applied from poking about yesterday.  I had given up on those as
> culprit, and intended to pop them off and rebuild, but they were in
> fact in the booted kernel.  Oh well, booboo could have a bright side.

Hi Mike-

I'm guessing your client mounts with NFSv4.x.

We've been chasing a similar problem for a few months, but for
lack of a solid reproducer, it has remained elusive.

We believe the problem was introduced between 5.19 and 6.0. If
you have a fairly reliable way to trigger the server hang, then
maybe a bisect would be possible?


--
Chuck Lever

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

On Thu, 2022-12-22 at 04:28 +0000, Chuck Lever III wrote:
>
> Hi Mike-

Greetings,

> I'm guessing your client mounts with NFSv4.x.

Yes, mount says vers=4.2.

> We've been chasing a similar problem for a few months, but for
> lack of a solid reproducer, it has remained elusive.
>
> We believe the problem was introduced between 5.19 and 6.0. If
> you have a fairly reliable way to trigger the server hang, then
> maybe a bisect would be possible?

The 'solid' reproducer attribute is a bit of a problem, why I was
taking potshots at it.  I'll try to sneak up on it.

	-Mike

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

Quoting previous mail for context.

On Thu, 2022-12-22 at 05:14 +0100, Mike Galbraith wrote:
> On Thu, 2022-12-22 at 04:42 +0100, Mike Galbraith wrote:
> > On Wed, 2022-12-21 at 10:56 +0100, Mike Galbraith wrote:
> > > > 6.1 didn't reproduce either, so it would appear to be a merge window bug.
> >
> > Ah, not true, turning evolution loose in nfs mounted home and letting
> > it refresh mailboxes while desktop box was kept busy jammed up 6.1.0 in
> > fairly short order.
>
> Well crap.  That was _not_ virgin 6.1.0 after all, it was 6.1.0 with...
>
> 44df6f439a17 NFSD: add delegation reaper to react to low memory condition
> 3959066b697b NFSD: add support for sending CB_RECALL_ANY
> a1049eb47f20 NFSD: refactoring courtesy_client_reaper to a generic low memory shrinker
>
> ...applied from poking about yesterday.  I had given up on those as
> culprit, and intended to pop them off and rebuild, but they were in
> fact in the booted kernel.  Oh well, booboo could have a bright side.

I let my desktop box play server/space-heater for a long test session
of 6.1 with and without the above series: with, box bricked 3 times in
~5 hours, without, 0 bricks in ~6 hours.  Box says woof -> duck ;-)

Given the similarity you mentioned, I wonder if my bug is perhaps your
sneaky bug rendered somewhat less sneaky by that series? One can hope.

	-Mike

Re: regression: nfs mount (even idle) eventually hangs server

[Chuck Lever III]

> On Dec 22, 2022, at 8:30 AM, Mike Galbraith <efault@gmx.de> wrote:
> 
> Quoting previous mail for context.
> 
> On Thu, 2022-12-22 at 05:14 +0100, Mike Galbraith wrote:
>> On Thu, 2022-12-22 at 04:42 +0100, Mike Galbraith wrote:
>>> On Wed, 2022-12-21 at 10:56 +0100, Mike Galbraith wrote:
>>>>> 6.1 didn't reproduce either, so it would appear to be a merge window bug.
>>> 
>>> Ah, not true, turning evolution loose in nfs mounted home and letting
>>> it refresh mailboxes while desktop box was kept busy jammed up 6.1.0 in
>>> fairly short order.
>> 
>> Well crap.  That was _not_ virgin 6.1.0 after all, it was 6.1.0 with...
>> 
>> 44df6f439a17 NFSD: add delegation reaper to react to low memory condition
>> 3959066b697b NFSD: add support for sending CB_RECALL_ANY
>> a1049eb47f20 NFSD: refactoring courtesy_client_reaper to a generic low memory shrinker
>> 
>> ...applied from poking about yesterday.  I had given up on those as
>> culprit, and intended to pop them off and rebuild, but they were in
>> fact in the booted kernel.  Oh well, booboo could have a bright side.
> 
> I let my desktop box play server/space-heater for a long test session
> of 6.1 with and without the above series: with, box bricked 3 times in
> ~5 hours, without, 0 bricks in ~6 hours.  Box says woof -> duck ;-)

Thank you for testing!


> Given the similarity you mentioned, I wonder if my bug is perhaps your
> sneaky bug rendered somewhat less sneaky by that series? One can hope.

Not likely: we've seen problems since 5.19, and these patches were
merged in 6.2-rc.

So my question is whether you see a problem when only a1049eb47f20
is applied, or only when all three are applied?


--
Chuck Lever

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

On Thu, 2022-12-22 at 14:21 +0000, Chuck Lever III wrote:
>
> So my question is whether you see a problem when only a1049eb47f20
> is applied, or only when all three are applied?

Seemingly the latter.

	-Mike

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

On Fri, 2022-12-23 at 05:41 +0100, Mike Galbraith wrote:
> On Thu, 2022-12-22 at 14:21 +0000, Chuck Lever III wrote:
> > 
> > So my question is whether you see a problem when only a1049eb47f20
> > is applied, or only when all three are applied?
> 
> Seemingly the latter.

Stuffing the other two into 6.1 sans a1049eb47f20 seems to agree that
the problem lies therein.

[ 1909.987616] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1655 __queue_delayed_work+0x6a/0x90
[ 1909.987627] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E[ 1909.987603] ------------[ cut here ]------------
)
[ 1909.987663]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.987715] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G            E      6.1.1-smpxx #8
[ 1909.987720] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.987723] RIP: 0010:__queue_delayed_work+0x6a/0x90
[ 1909.987729] Code: 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7 e9 fb e7 06 00 e9 a6 e9 ff ff 0f 0b eb cc 0f 0b 48 81 7a 38 10 4d 09 81 74 aa <0f> 0b 48 8b 42 28 48 85 c0 74 a8 0f 0b eb a4 89 fe 4c 89 c7 e9 7d
[ 1909.987734] RSP: 0018:ffff888100ec7c78 EFLAGS: 00010007
[ 1909.987737] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 1909.987740] RDX: ffff88810800ab48 RSI: ffff88818118d400 RDI: 0000000000000008
[ 1909.987743] RBP: ffff88810800ab48 R08: 0000000000000004 R09: 0000000000000000
[ 1909.987745] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008
[ 1909.987748] R13: ffff88818118d400 R14: 0000000000000000 R15: ffff88810800ab10
[ 1909.987751] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.987754] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.987757] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.987760] Call Trace:
[ 1909.987764]  <TASK>
[ 1909.987766]  mod_delayed_work_on+0x49/0x70
[ 1909.987772]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.987800]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.987805]  shrink_node+0x1c5/0x420
[ 1909.987810]  balance_pgdat+0x25f/0x530
[ 1909.987814]  ? prepare_to_wait_event+0x120/0x120
[ 1909.987821]  kswapd+0x12c/0x360
[ 1909.987824]  ? prepare_to_wait_event+0x120/0x120
[ 1909.987830]  ? balance_pgdat+0x530/0x530
[ 1909.987834]  kthread+0xec/0x110
[ 1909.987840]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.987844]  ret_from_fork+0x1f/0x30
[ 1909.987850]  </TASK>
[ 1909.987852] ---[ end trace 0000000000000000 ]---
[ 1909.987856] ------------[ cut here ]------------
[ 1909.987859] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1657 __queue_delayed_work+0x5a/0x90
[ 1909.987863] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.987889]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.987931] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.987934] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.987937] RIP: 0010:__queue_delayed_work+0x5a/0x90
[ 1909.987941] Code: 8b 05 3a 2c 17 01 4c 8d 42 20 48 89 72 48 89 7a 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7 e9 fb e7 06 00 e9 a6 e9 ff ff <0f> 0b eb cc 0f 0b 48 81 7a 38 10 4d 09 81 74 aa 0f 0b 48 8b 42 28
[ 1909.987945] RSP: 0018:ffff888100ec7c78 EFLAGS: 00010003
[ 1909.987948] RAX: ffff88810800ab50 RBX: 0000000000000000 RCX: 0000000000000000
[ 1909.987950] RDX: ffff88810800ab48 RSI: ffff88818118d400 RDI: 0000000000000008
[ 1909.987954] RBP: ffff88810800ab48 R08: 0000000000000000 R09: 0000000000000000
[ 1909.987957] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008
[ 1909.987959] R13: ffff88818118d400 R14: 0000000000000000 R15: ffff88810800ab10
[ 1909.987963] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.987966] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.987969] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.987972] Call Trace:
[ 1909.987974]  <TASK>
[ 1909.987977]  mod_delayed_work_on+0x49/0x70
[ 1909.987980]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.987999]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.988004]  shrink_node+0x1c5/0x420
[ 1909.988008]  balance_pgdat+0x25f/0x530
[ 1909.988013]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988020]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988026]  ? balance_pgdat+0x530/0x530
[ 1909.988030]  kthread+0xec/0x110
[ 1909.988033]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.988038]  ret_from_fork+0x1f/0x30
[ 1909.988042]  </TASK>
[ 1909.988044] ---[ end trace 0000000000000000 ]---
[ 1909.988048] ------------[ cut here ]------------
[ 1909.988050] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.988017]  kswapd+0x12c/0x360
[ 1909.988064] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.988099]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.988140] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.988144] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.988146] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.988149] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.988154] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.988157] RAX: ffff88810800ab50 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.988160] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.988164] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.988166] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.988169] R13: 0000000000000007 R14: ffff88810800ab48 R15: ffff888107256100
[ 1909.988172] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.988176] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.988178] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.988181] Call Trace:
[ 1909.988184]  <TASK>
[ 1909.988186]  mod_delayed_work_on+0x49/0x70
[ 1909.988190]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.988207]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.988212]  shrink_node+0x1c5/0x420
[ 1909.988216]  balance_pgdat+0x25f/0x530
[ 1909.988220]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988224]  kswapd+0x12c/0x360
[ 1909.988228]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988232]  ? balance_pgdat+0x530/0x530
[ 1909.988235]  kthread+0xec/0x110
[ 1909.988239]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.988247]  </TASK>
[ 1909.988249] ---[ end trace 0000000000000000 ]---
[ 1909.988264] ------------[ cut here ]------------
[ 1909.988267] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.988271] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.988296]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.988357] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.988360] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.988362] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.988376] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.988379] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.988392] RAX: ffff888106c9bf50 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.988395] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.988397] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.988400] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.988404] R13: 0000000000000007 R14: ffff888106c9bf48 R15: ffff888107256100
[ 1909.988407] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.988410] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.988413] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.988416] Call Trace:
[ 1909.988243]  ret_from_fork+0x1f/0x30
[ 1909.988418]  <TASK>
[ 1909.988420]  mod_delayed_work_on+0x49/0x70
[ 1909.988424]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.988442]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.988446]  shrink_node+0x1c5/0x420
[ 1909.988451]  balance_pgdat+0x25f/0x530
[ 1909.988455]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988459]  kswapd+0x12c/0x360
[ 1909.988463]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988467]  ? balance_pgdat+0x530/0x530
[ 1909.988470]  kthread+0xec/0x110
[ 1909.988475]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.988478]  ret_from_fork+0x1f/0x30
[ 1909.988483]  </TASK>
[ 1909.988485] ---[ end trace 0000000000000000 ]---
[ 1909.988489] ------------[ cut here ]------------
[ 1909.988491] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.988495] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.988521]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.988563] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.988566] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.988568] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.988572] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.988576] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.988579] RAX: ffff8881438d7b50 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.988582] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.988586] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.988588] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.988591] R13: 0000000000000007 R14: ffff8881438d7b48 R15: ffff888107256100
[ 1909.988594] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.988597] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.988602] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.988605] Call Trace:
[ 1909.988607]  <TASK>
[ 1909.988610]  mod_delayed_work_on+0x49/0x70
[ 1909.988615]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.988633]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.988637]  shrink_node+0x1c5/0x420
[ 1909.988641]  balance_pgdat+0x25f/0x530
[ 1909.988645]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988649]  kswapd+0x12c/0x360
[ 1909.988653]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988658]  ? balance_pgdat+0x530/0x530
[ 1909.988661]  kthread+0xec/0x110
[ 1909.988664]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.988667]  ret_from_fork+0x1f/0x30
[ 1909.988672]  </TASK>
[ 1909.988674] ---[ end trace 0000000000000000 ]---
[ 1909.988678] ------------[ cut here ]------------
[ 1909.988681] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.988740] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.988765]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.988806] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.988809] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.988812] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.988815] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.988819] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.988822] RAX: ffff8881e2614750 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.988824] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.988827] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.988830] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.988832] R13: 0000000000000007 R14: ffff8881e2614748 R15: ffff888107256100
[ 1909.988835] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.988838] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.988841] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.988843] Call Trace:
[ 1909.988846]  <TASK>
[ 1909.988848]  mod_delayed_work_on+0x49/0x70
[ 1909.988852]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.988869]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.988873]  shrink_node+0x1c5/0x420
[ 1909.988877]  balance_pgdat+0x25f/0x530
[ 1909.988881]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988885]  kswapd+0x12c/0x360
[ 1909.988889]  ? prepare_to_wait_event+0x120/0x120
[ 1909.988893]  ? balance_pgdat+0x530/0x530
[ 1909.988897]  kthread+0xec/0x110
[ 1909.988900]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.988903]  ret_from_fork+0x1f/0x30
[ 1909.988907]  </TASK>
[ 1909.988909] ---[ end trace 0000000000000000 ]---
[ 1909.988913] ------------[ cut here ]------------
[ 1909.988915] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.988919] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.988945]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.988986] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.988990] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.988992] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.988995] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.988999] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.989002] RAX: ffff888332342350 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.989005] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.989007] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.989010] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.989013] R13: 0000000000000007 R14: ffff888332342348 R15: ffff888107256100
[ 1909.989016] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.989019] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.989021] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.989024] Call Trace:
[ 1909.989026]  <TASK>
[ 1909.989028]  mod_delayed_work_on+0x49/0x70
[ 1909.989032]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.989049]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.989053]  shrink_node+0x1c5/0x420
[ 1909.989057]  balance_pgdat+0x25f/0x530
[ 1909.989061]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989065]  kswapd+0x12c/0x360
[ 1909.989069]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989073]  ? balance_pgdat+0x530/0x530
[ 1909.989077]  kthread+0xec/0x110
[ 1909.989080]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.989083]  ret_from_fork+0x1f/0x30
[ 1909.989089]  </TASK>
[ 1909.989091] ---[ end trace 0000000000000000 ]---
[ 1909.989095] ------------[ cut here ]------------
[ 1909.989097] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.989101] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.989126]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.989168] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.989229] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.989232] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.989235] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.989239] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.989242] RAX: ffff888331afb750 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.989244] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.989247] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.989249] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.989252] R13: 0000000000000007 R14: ffff888331afb748 R15: ffff888107256100
[ 1909.989255] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.989258] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.989260] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.989263] Call Trace:
[ 1909.989265]  <TASK>
[ 1909.989267]  mod_delayed_work_on+0x49/0x70
[ 1909.989271]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.989288]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.989292]  shrink_node+0x1c5/0x420
[ 1909.989296]  balance_pgdat+0x25f/0x530
[ 1909.989300]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989304]  kswapd+0x12c/0x360
[ 1909.989307]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989311]  ? balance_pgdat+0x530/0x530
[ 1909.989315]  kthread+0xec/0x110
[ 1909.989318]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.989321]  ret_from_fork+0x1f/0x30
[ 1909.989325]  </TASK>
[ 1909.989327] ---[ end trace 0000000000000000 ]---
[ 1909.989331] ------------[ cut here ]------------
[ 1909.989334] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.989337] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.989363]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.989404] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.989407] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.989410] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.989413] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.989417] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.989420] RAX: ffff888331aff350 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.989423] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.989426] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.989428] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.989431] R13: 0000000000000007 R14: ffff888331aff348 R15: ffff888107256100
[ 1909.989434] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.989437] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.989440] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.989442] Call Trace:
[ 1909.989444]  <TASK>
[ 1909.989447]  mod_delayed_work_on+0x49/0x70
[ 1909.989450]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.989467]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.989471]  shrink_node+0x1c5/0x420
[ 1909.989475]  balance_pgdat+0x25f/0x530
[ 1909.989479]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989484]  kswapd+0x12c/0x360
[ 1909.989487]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989491]  ? balance_pgdat+0x530/0x530
[ 1909.989495]  kthread+0xec/0x110
[ 1909.989498]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.989501]  ret_from_fork+0x1f/0x30
[ 1909.989505]  </TASK>
[ 1909.989507] ---[ end trace 0000000000000000 ]---
[ 1909.989511] ------------[ cut here ]------------
[ 1909.989514] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.989518] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.989543]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.989585] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.989588] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.989590] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.989594] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.989597] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.989674] RAX: ffff8883a3ba7b50 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.989676] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.989679] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.989682] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.989684] R13: 0000000000000007 R14: ffff8883a3ba7b48 R15: ffff888107256100
[ 1909.989687] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.989690] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.989693] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.989695] Call Trace:
[ 1909.989698]  <TASK>
[ 1909.989700]  mod_delayed_work_on+0x49/0x70
[ 1909.989704]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.989721]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.989725]  shrink_node+0x1c5/0x420
[ 1909.989729]  balance_pgdat+0x25f/0x530
[ 1909.989733]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989737]  kswapd+0x12c/0x360
[ 1909.989741]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989745]  ? balance_pgdat+0x530/0x530
[ 1909.989749]  kthread+0xec/0x110
[ 1909.989751]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.989755]  ret_from_fork+0x1f/0x30
[ 1909.989759]  </TASK>
[ 1909.989761] ---[ end trace 0000000000000000 ]---
[ 1909.989765] ------------[ cut here ]------------
[ 1909.989767] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.989771] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.989796]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.989838] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.989841] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.989844] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.989847] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.989851] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.989854] RAX: ffff8881737c2f50 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.989857] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.989859] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.989862] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.989865] R13: 0000000000000007 R14: ffff8881737c2f48 R15: ffff888107256100
[ 1909.989867] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.989870] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.989873] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.989876] Call Trace:
[ 1909.989878]  <TASK>
[ 1909.989880]  mod_delayed_work_on+0x49/0x70
[ 1909.989884]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.989901]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.989905]  shrink_node+0x1c5/0x420
[ 1909.989909]  balance_pgdat+0x25f/0x530
[ 1909.989913]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989917]  kswapd+0x12c/0x360
[ 1909.989921]  ? prepare_to_wait_event+0x120/0x120
[ 1909.989925]  ? balance_pgdat+0x530/0x530
[ 1909.989929]  kthread+0xec/0x110
[ 1909.989932]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.989935]  ret_from_fork+0x1f/0x30
[ 1909.989939]  </TASK>
[ 1909.989941] ---[ end trace 0000000000000000 ]---
[ 1909.989946] ------------[ cut here ]------------
[ 1909.989948] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1909.989952] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
[ 1909.989977]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
[ 1909.990020] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
[ 1909.990023] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 1909.990025] RIP: 0010:__queue_work+0x33b/0x3d0
[ 1909.990029] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
[ 1909.990033] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
[ 1909.990035] RAX: ffff888354cb7f50 RBX: ffffffff820c4860 RCX: 0000000000000000
[ 1909.990038] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
[ 1909.990041] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
[ 1909.990043] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
[ 1909.990046] R13: 0000000000000007 R14: ffff888354cb7f48 R15: ffff888107256100
[ 1909.990049] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
[ 1909.990052] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1909.990054] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
[ 1909.990057] Call Trace:
[ 1909.990059]  <TASK>
[ 1909.990061]  mod_delayed_work_on+0x49/0x70
[ 1909.990065]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
[ 1909.990081]  shrink_slab.constprop.92+0x9d/0x370
[ 1909.990085]  shrink_node+0x1c5/0x420
[ 1909.990089]  balance_pgdat+0x25f/0x530
[ 1909.990093]  ? prepare_to_wait_event+0x120/0x120
[ 1909.990097]  kswapd+0x12c/0x360
[ 1909.990101]  ? prepare_to_wait_event+0x120/0x120
[ 1909.990105]  ? balance_pgdat+0x530/0x530
[ 1909.990108]  kthread+0xec/0x110
[ 1909.990111]  ? kthread_complete_and_exit+0x20/0x20
[ 1909.990114]  ret_from_fork+0x1f/0x30
[ 1909.990119]  </TASK>
[ 1909.990121] ---[ end trace 0000000000000000 ]---
[ 1943.085109] sysrq: Resetting

Re: regression: nfs mount (even idle) eventually hangs server

[dai.ngo]

[-- Attachment #1: Type: text/plain, Size: 48789 bytes --]

Hi Mike,

I think the problem is the nfsd4_state_shrinker_worker is being
scheduled to run multiple times. This trigger the WARN_ON_ONCE
in __queue_delayed_work.

Could you try the attached patch to see if it fixes this problem.
I tried to reproduce it on my test VMs but no success so I can't
verify the patch.

Thanks,
-Dai

On 12/22/22 10:28 PM, Mike Galbraith wrote:
> On Fri, 2022-12-23 at 05:41 +0100, Mike Galbraith wrote:
>> On Thu, 2022-12-22 at 14:21 +0000, Chuck Lever III wrote:
>>> So my question is whether you see a problem when only a1049eb47f20
>>> is applied, or only when all three are applied?
>> Seemingly the latter.
> Stuffing the other two into 6.1 sans a1049eb47f20 seems to agree that
> the problem lies therein.
>
> [ 1909.987616] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1655 __queue_delayed_work+0x6a/0x90
> [ 1909.987627] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E[ 1909.987603] ------------[ cut here ]------------
> )
> [ 1909.987663]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.987715] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G            E      6.1.1-smpxx #8
> [ 1909.987720] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.987723] RIP: 0010:__queue_delayed_work+0x6a/0x90
> [ 1909.987729] Code: 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7 e9 fb e7 06 00 e9 a6 e9 ff ff 0f 0b eb cc 0f 0b 48 81 7a 38 10 4d 09 81 74 aa <0f> 0b 48 8b 42 28 48 85 c0 74 a8 0f 0b eb a4 89 fe 4c 89 c7 e9 7d
> [ 1909.987734] RSP: 0018:ffff888100ec7c78 EFLAGS: 00010007
> [ 1909.987737] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
> [ 1909.987740] RDX: ffff88810800ab48 RSI: ffff88818118d400 RDI: 0000000000000008
> [ 1909.987743] RBP: ffff88810800ab48 R08: 0000000000000004 R09: 0000000000000000
> [ 1909.987745] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008
> [ 1909.987748] R13: ffff88818118d400 R14: 0000000000000000 R15: ffff88810800ab10
> [ 1909.987751] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.987754] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.987757] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.987760] Call Trace:
> [ 1909.987764]  <TASK>
> [ 1909.987766]  mod_delayed_work_on+0x49/0x70
> [ 1909.987772]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.987800]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.987805]  shrink_node+0x1c5/0x420
> [ 1909.987810]  balance_pgdat+0x25f/0x530
> [ 1909.987814]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.987821]  kswapd+0x12c/0x360
> [ 1909.987824]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.987830]  ? balance_pgdat+0x530/0x530
> [ 1909.987834]  kthread+0xec/0x110
> [ 1909.987840]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.987844]  ret_from_fork+0x1f/0x30
> [ 1909.987850]  </TASK>
> [ 1909.987852] ---[ end trace 0000000000000000 ]---
> [ 1909.987856] ------------[ cut here ]------------
> [ 1909.987859] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1657 __queue_delayed_work+0x5a/0x90
> [ 1909.987863] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.987889]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.987931] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.987934] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.987937] RIP: 0010:__queue_delayed_work+0x5a/0x90
> [ 1909.987941] Code: 8b 05 3a 2c 17 01 4c 8d 42 20 48 89 72 48 89 7a 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7 e9 fb e7 06 00 e9 a6 e9 ff ff <0f> 0b eb cc 0f 0b 48 81 7a 38 10 4d 09 81 74 aa 0f 0b 48 8b 42 28
> [ 1909.987945] RSP: 0018:ffff888100ec7c78 EFLAGS: 00010003
> [ 1909.987948] RAX: ffff88810800ab50 RBX: 0000000000000000 RCX: 0000000000000000
> [ 1909.987950] RDX: ffff88810800ab48 RSI: ffff88818118d400 RDI: 0000000000000008
> [ 1909.987954] RBP: ffff88810800ab48 R08: 0000000000000000 R09: 0000000000000000
> [ 1909.987957] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008
> [ 1909.987959] R13: ffff88818118d400 R14: 0000000000000000 R15: ffff88810800ab10
> [ 1909.987963] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.987966] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.987969] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.987972] Call Trace:
> [ 1909.987974]  <TASK>
> [ 1909.987977]  mod_delayed_work_on+0x49/0x70
> [ 1909.987980]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.987999]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.988004]  shrink_node+0x1c5/0x420
> [ 1909.988008]  balance_pgdat+0x25f/0x530
> [ 1909.988013]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988020]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988026]  ? balance_pgdat+0x530/0x530
> [ 1909.988030]  kthread+0xec/0x110
> [ 1909.988033]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.988038]  ret_from_fork+0x1f/0x30
> [ 1909.988042]  </TASK>
> [ 1909.988044] ---[ end trace 0000000000000000 ]---
> [ 1909.988048] ------------[ cut here ]------------
> [ 1909.988050] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.988017]  kswapd+0x12c/0x360
> [ 1909.988064] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.988099]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.988140] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.988144] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.988146] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.988149] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.988154] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.988157] RAX: ffff88810800ab50 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.988160] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.988164] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.988166] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.988169] R13: 0000000000000007 R14: ffff88810800ab48 R15: ffff888107256100
> [ 1909.988172] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.988176] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.988178] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.988181] Call Trace:
> [ 1909.988184]  <TASK>
> [ 1909.988186]  mod_delayed_work_on+0x49/0x70
> [ 1909.988190]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.988207]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.988212]  shrink_node+0x1c5/0x420
> [ 1909.988216]  balance_pgdat+0x25f/0x530
> [ 1909.988220]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988224]  kswapd+0x12c/0x360
> [ 1909.988228]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988232]  ? balance_pgdat+0x530/0x530
> [ 1909.988235]  kthread+0xec/0x110
> [ 1909.988239]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.988247]  </TASK>
> [ 1909.988249] ---[ end trace 0000000000000000 ]---
> [ 1909.988264] ------------[ cut here ]------------
> [ 1909.988267] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.988271] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.988296]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.988357] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.988360] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.988362] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.988376] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.988379] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.988392] RAX: ffff888106c9bf50 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.988395] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.988397] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.988400] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.988404] R13: 0000000000000007 R14: ffff888106c9bf48 R15: ffff888107256100
> [ 1909.988407] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.988410] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.988413] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.988416] Call Trace:
> [ 1909.988243]  ret_from_fork+0x1f/0x30
> [ 1909.988418]  <TASK>
> [ 1909.988420]  mod_delayed_work_on+0x49/0x70
> [ 1909.988424]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.988442]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.988446]  shrink_node+0x1c5/0x420
> [ 1909.988451]  balance_pgdat+0x25f/0x530
> [ 1909.988455]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988459]  kswapd+0x12c/0x360
> [ 1909.988463]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988467]  ? balance_pgdat+0x530/0x530
> [ 1909.988470]  kthread+0xec/0x110
> [ 1909.988475]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.988478]  ret_from_fork+0x1f/0x30
> [ 1909.988483]  </TASK>
> [ 1909.988485] ---[ end trace 0000000000000000 ]---
> [ 1909.988489] ------------[ cut here ]------------
> [ 1909.988491] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.988495] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.988521]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.988563] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.988566] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.988568] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.988572] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.988576] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.988579] RAX: ffff8881438d7b50 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.988582] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.988586] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.988588] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.988591] R13: 0000000000000007 R14: ffff8881438d7b48 R15: ffff888107256100
> [ 1909.988594] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.988597] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.988602] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.988605] Call Trace:
> [ 1909.988607]  <TASK>
> [ 1909.988610]  mod_delayed_work_on+0x49/0x70
> [ 1909.988615]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.988633]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.988637]  shrink_node+0x1c5/0x420
> [ 1909.988641]  balance_pgdat+0x25f/0x530
> [ 1909.988645]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988649]  kswapd+0x12c/0x360
> [ 1909.988653]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988658]  ? balance_pgdat+0x530/0x530
> [ 1909.988661]  kthread+0xec/0x110
> [ 1909.988664]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.988667]  ret_from_fork+0x1f/0x30
> [ 1909.988672]  </TASK>
> [ 1909.988674] ---[ end trace 0000000000000000 ]---
> [ 1909.988678] ------------[ cut here ]------------
> [ 1909.988681] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.988740] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.988765]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.988806] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.988809] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.988812] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.988815] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.988819] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.988822] RAX: ffff8881e2614750 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.988824] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.988827] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.988830] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.988832] R13: 0000000000000007 R14: ffff8881e2614748 R15: ffff888107256100
> [ 1909.988835] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.988838] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.988841] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.988843] Call Trace:
> [ 1909.988846]  <TASK>
> [ 1909.988848]  mod_delayed_work_on+0x49/0x70
> [ 1909.988852]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.988869]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.988873]  shrink_node+0x1c5/0x420
> [ 1909.988877]  balance_pgdat+0x25f/0x530
> [ 1909.988881]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988885]  kswapd+0x12c/0x360
> [ 1909.988889]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.988893]  ? balance_pgdat+0x530/0x530
> [ 1909.988897]  kthread+0xec/0x110
> [ 1909.988900]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.988903]  ret_from_fork+0x1f/0x30
> [ 1909.988907]  </TASK>
> [ 1909.988909] ---[ end trace 0000000000000000 ]---
> [ 1909.988913] ------------[ cut here ]------------
> [ 1909.988915] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.988919] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.988945]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.988986] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.988990] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.988992] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.988995] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.988999] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.989002] RAX: ffff888332342350 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.989005] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.989007] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.989010] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.989013] R13: 0000000000000007 R14: ffff888332342348 R15: ffff888107256100
> [ 1909.989016] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.989019] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.989021] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.989024] Call Trace:
> [ 1909.989026]  <TASK>
> [ 1909.989028]  mod_delayed_work_on+0x49/0x70
> [ 1909.989032]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.989049]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.989053]  shrink_node+0x1c5/0x420
> [ 1909.989057]  balance_pgdat+0x25f/0x530
> [ 1909.989061]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989065]  kswapd+0x12c/0x360
> [ 1909.989069]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989073]  ? balance_pgdat+0x530/0x530
> [ 1909.989077]  kthread+0xec/0x110
> [ 1909.989080]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.989083]  ret_from_fork+0x1f/0x30
> [ 1909.989089]  </TASK>
> [ 1909.989091] ---[ end trace 0000000000000000 ]---
> [ 1909.989095] ------------[ cut here ]------------
> [ 1909.989097] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.989101] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.989126]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.989168] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.989229] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.989232] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.989235] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.989239] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.989242] RAX: ffff888331afb750 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.989244] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.989247] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.989249] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.989252] R13: 0000000000000007 R14: ffff888331afb748 R15: ffff888107256100
> [ 1909.989255] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.989258] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.989260] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.989263] Call Trace:
> [ 1909.989265]  <TASK>
> [ 1909.989267]  mod_delayed_work_on+0x49/0x70
> [ 1909.989271]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.989288]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.989292]  shrink_node+0x1c5/0x420
> [ 1909.989296]  balance_pgdat+0x25f/0x530
> [ 1909.989300]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989304]  kswapd+0x12c/0x360
> [ 1909.989307]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989311]  ? balance_pgdat+0x530/0x530
> [ 1909.989315]  kthread+0xec/0x110
> [ 1909.989318]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.989321]  ret_from_fork+0x1f/0x30
> [ 1909.989325]  </TASK>
> [ 1909.989327] ---[ end trace 0000000000000000 ]---
> [ 1909.989331] ------------[ cut here ]------------
> [ 1909.989334] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.989337] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.989363]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.989404] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.989407] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.989410] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.989413] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.989417] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.989420] RAX: ffff888331aff350 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.989423] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.989426] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.989428] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.989431] R13: 0000000000000007 R14: ffff888331aff348 R15: ffff888107256100
> [ 1909.989434] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.989437] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.989440] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.989442] Call Trace:
> [ 1909.989444]  <TASK>
> [ 1909.989447]  mod_delayed_work_on+0x49/0x70
> [ 1909.989450]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.989467]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.989471]  shrink_node+0x1c5/0x420
> [ 1909.989475]  balance_pgdat+0x25f/0x530
> [ 1909.989479]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989484]  kswapd+0x12c/0x360
> [ 1909.989487]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989491]  ? balance_pgdat+0x530/0x530
> [ 1909.989495]  kthread+0xec/0x110
> [ 1909.989498]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.989501]  ret_from_fork+0x1f/0x30
> [ 1909.989505]  </TASK>
> [ 1909.989507] ---[ end trace 0000000000000000 ]---
> [ 1909.989511] ------------[ cut here ]------------
> [ 1909.989514] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.989518] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.989543]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.989585] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.989588] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.989590] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.989594] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.989597] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.989674] RAX: ffff8883a3ba7b50 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.989676] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.989679] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.989682] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.989684] R13: 0000000000000007 R14: ffff8883a3ba7b48 R15: ffff888107256100
> [ 1909.989687] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.989690] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.989693] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.989695] Call Trace:
> [ 1909.989698]  <TASK>
> [ 1909.989700]  mod_delayed_work_on+0x49/0x70
> [ 1909.989704]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.989721]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.989725]  shrink_node+0x1c5/0x420
> [ 1909.989729]  balance_pgdat+0x25f/0x530
> [ 1909.989733]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989737]  kswapd+0x12c/0x360
> [ 1909.989741]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989745]  ? balance_pgdat+0x530/0x530
> [ 1909.989749]  kthread+0xec/0x110
> [ 1909.989751]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.989755]  ret_from_fork+0x1f/0x30
> [ 1909.989759]  </TASK>
> [ 1909.989761] ---[ end trace 0000000000000000 ]---
> [ 1909.989765] ------------[ cut here ]------------
> [ 1909.989767] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.989771] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.989796]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.989838] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.989841] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.989844] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.989847] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.989851] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.989854] RAX: ffff8881737c2f50 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.989857] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.989859] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.989862] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.989865] R13: 0000000000000007 R14: ffff8881737c2f48 R15: ffff888107256100
> [ 1909.989867] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.989870] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.989873] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.989876] Call Trace:
> [ 1909.989878]  <TASK>
> [ 1909.989880]  mod_delayed_work_on+0x49/0x70
> [ 1909.989884]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.989901]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.989905]  shrink_node+0x1c5/0x420
> [ 1909.989909]  balance_pgdat+0x25f/0x530
> [ 1909.989913]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989917]  kswapd+0x12c/0x360
> [ 1909.989921]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.989925]  ? balance_pgdat+0x530/0x530
> [ 1909.989929]  kthread+0xec/0x110
> [ 1909.989932]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.989935]  ret_from_fork+0x1f/0x30
> [ 1909.989939]  </TASK>
> [ 1909.989941] ---[ end trace 0000000000000000 ]---
> [ 1909.989946] ------------[ cut here ]------------
> [ 1909.989948] WARNING: CPU: 7 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1909.989952] Modules linked in: netconsole(E) af_packet(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) usblp(E) joydev(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_intel(E) snd_intel_dspcfg(E) iTCO_wdt(E) at24(E) intel_pmc_bxt(E) regmap_i2c(E) mei_hdcp(E) iTCO_vendor_support(E) kvm_intel(E) snd_hda_codec(E) nls_iso8859_1(E) snd_hwdep(E) nls_cp437(E) snd_hda_core(E) kvm(E) snd_pcm(E) r8169(E) irqbypass(E) snd_timer(E) i2c_i801(E) realtek(E) pcspkr(E) mei_me(E) mdio_devres(E) i2c_smbus(E) snd(E) lpc_ich(E) mfd_core(E) libphy(E) soundcore(E) mei(E) thermal(E) fan(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sch_fq_codel(E) sunrpc(E)
> [ 1909.989977]  fuse(E) configfs(E) ip_tables(E) x_tables(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) i2c_algo_bit(E) drm_ttm_helper(E) ttm(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) drm_kms_helper(E) ghash_clmulni_intel(E) sha512_ssse3(E) syscopyarea(E) sha512_generic(E) sysfillrect(E) xhci_pci(E) sysimgblt(E) ahci(E) ehci_pci(E) aesni_intel(E) fb_sys_fops(E) crypto_simd(E) libahci(E) cryptd(E) xhci_hcd(E) ehci_hcd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1909.990020] CPU: 7 PID: 78 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.1-smpxx #8
> [ 1909.990023] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1909.990025] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1909.990029] Code: 25 00 cd 01 00 f6 47 2c 20 74 18 e8 5f 65 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d c3
> [ 1909.990033] RSP: 0018:ffff888100ec7c38 EFLAGS: 00010003
> [ 1909.990035] RAX: ffff888354cb7f50 RBX: ffffffff820c4860 RCX: 0000000000000000
> [ 1909.990038] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100070000
> [ 1909.990041] RBP: ffff88818118d400 R08: ffff888100400028 R09: ffff888100400000
> [ 1909.990043] R10: 0000000000000000 R11: ffffffff8225f318 R12: 0000000000000008
> [ 1909.990046] R13: 0000000000000007 R14: ffff888354cb7f48 R15: ffff888107256100
> [ 1909.990049] FS:  0000000000000000(0000) GS:ffff88840edc0000(0000) knlGS:0000000000000000
> [ 1909.990052] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1909.990054] CR2: 00007f295eac7000 CR3: 0000000004010003 CR4: 00000000001706e0
> [ 1909.990057] Call Trace:
> [ 1909.990059]  <TASK>
> [ 1909.990061]  mod_delayed_work_on+0x49/0x70
> [ 1909.990065]  nfsd_courtesy_client_count+0x24/0x50 [nfsd]
> [ 1909.990081]  shrink_slab.constprop.92+0x9d/0x370
> [ 1909.990085]  shrink_node+0x1c5/0x420
> [ 1909.990089]  balance_pgdat+0x25f/0x530
> [ 1909.990093]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.990097]  kswapd+0x12c/0x360
> [ 1909.990101]  ? prepare_to_wait_event+0x120/0x120
> [ 1909.990105]  ? balance_pgdat+0x530/0x530
> [ 1909.990108]  kthread+0xec/0x110
> [ 1909.990111]  ? kthread_complete_and_exit+0x20/0x20
> [ 1909.990114]  ret_from_fork+0x1f/0x30
> [ 1909.990119]  </TASK>
> [ 1909.990121] ---[ end trace 0000000000000000 ]---
> [ 1943.085109] sysrq: Resetting
>

[-- Attachment #2: 0001-NFSD-fix-WARN_ON_ONCE-in-__queue_delayed_work.patch --]
[-- Type: text/plain, Size: 2187 bytes --]

From f46bdea12e223fab1845715dc8bfa1295d40c0f1 Mon Sep 17 00:00:00 2001
From: Dai Ngo <dai.ngo@oracle.com>
Date: Fri, 23 Dec 2022 11:42:01 +0000
Subject: [PATCH] NFSD: fix WARN_ON_ONCE in __queue_delayed_work

Currently nfsd4_state_shrinker_worker can be schduled multiple times
from nfsd4_state_shrinker_count when memory is low. This causes
the WARN_ON_ONCE in __queue_delayed_work to trigger. In this case,
since __queue_delayed_work is called from kswapd and WARN_ON_ONCE
resulted in the call to printk which might try to allocate memory
which can cause deadlock.

Fix by adding a flag to indicate whether nfsd4_state_shrinker_worker
is active and skip calling mod_delayed_work from
nfsd4_state_shrinker_count.

Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
---
 fs/nfsd/netns.h     | 1 +
 fs/nfsd/nfs4state.c | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 8c854ba3285b..801d70926442 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -196,6 +196,7 @@ struct nfsd_net {
 	atomic_t		nfsd_courtesy_clients;
 	struct shrinker		nfsd_client_shrinker;
 	struct delayed_work	nfsd_shrinker_work;
+	bool			nfsd_shrinker_active;
 };
 
 /* Simple check to find out if a given net was properly initialized */
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index e1e85c21f12b..52f99be15ba2 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4407,11 +4407,15 @@ nfsd4_state_shrinker_count(struct shrinker *shrink, struct shrink_control *sc)
 	struct nfsd_net *nn = container_of(shrink,
 			struct nfsd_net, nfsd_client_shrinker);
 
+	if (nn->nfsd_shrinker_active)
+		return 0;
 	count = atomic_read(&nn->nfsd_courtesy_clients);
 	if (!count)
 		count = atomic_long_read(&num_delegations);
-	if (count)
+	if (count) {
+		nn->nfsd_shrinker_active = true;
 		mod_delayed_work(laundry_wq, &nn->nfsd_shrinker_work, 0);
+	}
 	return (unsigned long)count;
 }
 
@@ -6249,6 +6253,7 @@ nfsd4_state_shrinker_worker(struct work_struct *work)
 
 	courtesy_client_reaper(nn);
 	deleg_reaper(nn);
+	nn->nfsd_shrinker_active = 0;
 }
 
 static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stid *stp)
-- 
2.9.5

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

On Fri, 2022-12-23 at 04:02 -0800, dai.ngo@oracle.com wrote:
> Hi Mike,
>
> I think the problem is the nfsd4_state_shrinker_worker is being
> scheduled to run multiple times. This trigger the WARN_ON_ONCE
> in __queue_delayed_work.
>
> Could you try the attached patch to see if it fixes this problem.
> I tried to reproduce it on my test VMs but no success so I can't
> verify the patch.
> >

That was a nogo.

bart:/root # grep WARNING: netconsole.log
[ 1030.364594] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1655 __queue_delayed_work+0x6a/0x90
[ 1030.364970] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1657 __queue_delayed_work+0x5a/0x90
[ 1030.365315] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.365666] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.365992] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.366333] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.366669] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.366995] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.367317] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.367636] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 1030.367962] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0

Re: regression: nfs mount (even idle) eventually hangs server

[dai.ngo]

[-- Attachment #1: Type: text/plain, Size: 1688 bytes --]

Hi Mike,

Could you give the v2 patch a try? I will send you the location
to upload the core, if it happens, in a private email.

Thanks,
-Dai

On 12/23/22 5:05 AM, Mike Galbraith wrote:
> On Fri, 2022-12-23 at 04:02 -0800, dai.ngo@oracle.com wrote:
>> Hi Mike,
>>
>> I think the problem is the nfsd4_state_shrinker_worker is being
>> scheduled to run multiple times. This trigger the WARN_ON_ONCE
>> in __queue_delayed_work.
>>
>> Could you try the attached patch to see if it fixes this problem.
>> I tried to reproduce it on my test VMs but no success so I can't
>> verify the patch.
> That was a nogo.
>
> bart:/root # grep WARNING: netconsole.log
> [ 1030.364594] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1655 __queue_delayed_work+0x6a/0x90
> [ 1030.364970] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1657 __queue_delayed_work+0x5a/0x90
> [ 1030.365315] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.365666] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.365992] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.366333] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.366669] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.366995] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.367317] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.367636] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
> [ 1030.367962] WARNING: CPU: 4 PID: 79 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
>

[-- Attachment #2: 0001-PATCH-v2-NFSD-fix-WARN_ON_ONCE-in-__queue_delayed_wo.patch --]
[-- Type: text/plain, Size: 7325 bytes --]

From ab0c32e0073892881da18a023490d6f811e69b5e Mon Sep 17 00:00:00 2001
From: Dai Ngo <dai.ngo@oracle.com>
Date: Thu, 5 Jan 2023 19:12:48 +0000
Subject: [PATCH] [PATCH v2] NFSD: fix WARN_ON_ONCE in __queue_delayed_work

Currently nfsd4_state_shrinker_worker can be schduled multiple times
from nfsd4_state_shrinker_count when memory is low. This causes
the WARN_ON_ONCE in __queue_delayed_work to trigger.

This patch allows only one instance of nfsd4_state_shrinker_worker
at a time using the nfsd_shrinker_active flag.

Replaces mod_delayed_work with queue_delayed_work since we
don't expect to modify the delay of any pending work.

Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
---
 fs/nfsd/netns.h     |  1 +
 fs/nfsd/nfs4state.c | 37 +++++++++++++++++++++++--------------
 fs/nfsd/nfsctl.c    |  7 +------
 fs/nfsd/nfsd.h      |  6 ++----
 kernel/workqueue.c  |  9 ++++++---
 5 files changed, 33 insertions(+), 27 deletions(-)

diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 8c854ba3285b..801d70926442 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -196,6 +196,7 @@ struct nfsd_net {
 	atomic_t		nfsd_courtesy_clients;
 	struct shrinker		nfsd_client_shrinker;
 	struct delayed_work	nfsd_shrinker_work;
+	bool			nfsd_shrinker_active;
 };
 
 /* Simple check to find out if a given net was properly initialized */
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7b2ee535ade8..1f92d65bf16f 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4407,11 +4407,20 @@ nfsd4_state_shrinker_count(struct shrinker *shrink, struct shrink_control *sc)
 	struct nfsd_net *nn = container_of(shrink,
 			struct nfsd_net, nfsd_client_shrinker);
 
+	spin_lock(&nn->client_lock);
+	if (nn->nfsd_shrinker_active) {
+		spin_unlock(&nn->client_lock);
+		return 0;
+	}
 	count = atomic_read(&nn->nfsd_courtesy_clients);
 	if (!count)
 		count = atomic_long_read(&num_delegations);
-	if (count)
-		mod_delayed_work(laundry_wq, &nn->nfsd_shrinker_work, 0);
+	if (count) {
+		nn->nfsd_shrinker_active = true;
+		spin_unlock(&nn->client_lock);
+		queue_delayed_work(laundry_wq, &nn->nfsd_shrinker_work, 0);
+	} else
+		spin_unlock(&nn->client_lock);
 	return (unsigned long)count;
 }
 
@@ -4421,7 +4430,7 @@ nfsd4_state_shrinker_scan(struct shrinker *shrink, struct shrink_control *sc)
 	return SHRINK_STOP;
 }
 
-int
+void
 nfsd4_init_leases_net(struct nfsd_net *nn)
 {
 	struct sysinfo si;
@@ -4443,16 +4452,6 @@ nfsd4_init_leases_net(struct nfsd_net *nn)
 	nn->nfs4_max_clients = max_t(int, max_clients, NFS4_CLIENTS_PER_GB);
 
 	atomic_set(&nn->nfsd_courtesy_clients, 0);
-	nn->nfsd_client_shrinker.scan_objects = nfsd4_state_shrinker_scan;
-	nn->nfsd_client_shrinker.count_objects = nfsd4_state_shrinker_count;
-	nn->nfsd_client_shrinker.seeks = DEFAULT_SEEKS;
-	return register_shrinker(&nn->nfsd_client_shrinker, "nfsd-client");
-}
-
-void
-nfsd4_leases_net_shutdown(struct nfsd_net *nn)
-{
-	unregister_shrinker(&nn->nfsd_client_shrinker);
 }
 
 static void init_nfs4_replay(struct nfs4_replay *rp)
@@ -6249,6 +6248,9 @@ nfsd4_state_shrinker_worker(struct work_struct *work)
 
 	courtesy_client_reaper(nn);
 	deleg_reaper(nn);
+	spin_lock(&nn->client_lock);
+	nn->nfsd_shrinker_active = 0;
+	spin_unlock(&nn->client_lock);
 }
 
 static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stid *stp)
@@ -8075,9 +8077,15 @@ static int nfs4_state_create_net(struct net *net)
 
 	INIT_DELAYED_WORK(&nn->laundromat_work, laundromat_main);
 	INIT_DELAYED_WORK(&nn->nfsd_shrinker_work, nfsd4_state_shrinker_worker);
+	printk("%s: nn[%px] dwork[%px] timer[%px]\n",  __func__,
+		nn, &nn->nfsd_shrinker_work,
+		nn->nfsd_shrinker_work.timer.function);
 	get_net(net);
 
-	return 0;
+	nn->nfsd_client_shrinker.scan_objects = nfsd4_state_shrinker_scan;
+	nn->nfsd_client_shrinker.count_objects = nfsd4_state_shrinker_count;
+	nn->nfsd_client_shrinker.seeks = DEFAULT_SEEKS;
+	return register_shrinker(&nn->nfsd_client_shrinker, "nfsd-client");
 
 err_sessionid:
 	kfree(nn->unconf_id_hashtbl);
@@ -8171,6 +8179,7 @@ nfs4_state_shutdown_net(struct net *net)
 	struct list_head *pos, *next, reaplist;
 	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
+	unregister_shrinker(&nn->nfsd_client_shrinker);
 	cancel_delayed_work_sync(&nn->laundromat_work);
 	locks_end_grace(&nn->nfsd4_manager);
 
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index d1e581a60480..c2577ee7ffb2 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1457,9 +1457,7 @@ static __net_init int nfsd_init_net(struct net *net)
 		goto out_idmap_error;
 	nn->nfsd_versions = NULL;
 	nn->nfsd4_minorversions = NULL;
-	retval = nfsd4_init_leases_net(nn);
-	if (retval)
-		goto out_drc_error;
+	nfsd4_init_leases_net(nn);
 	retval = nfsd_reply_cache_init(nn);
 	if (retval)
 		goto out_cache_error;
@@ -1469,8 +1467,6 @@ static __net_init int nfsd_init_net(struct net *net)
 	return 0;
 
 out_cache_error:
-	nfsd4_leases_net_shutdown(nn);
-out_drc_error:
 	nfsd_idmap_shutdown(net);
 out_idmap_error:
 	nfsd_export_shutdown(net);
@@ -1486,7 +1482,6 @@ static __net_exit void nfsd_exit_net(struct net *net)
 	nfsd_idmap_shutdown(net);
 	nfsd_export_shutdown(net);
 	nfsd_netns_free_versions(net_generic(net, nfsd_net_id));
-	nfsd4_leases_net_shutdown(nn);
 }
 
 static struct pernet_operations nfsd_net_ops = {
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 93b42ef9ed91..fa0144a74267 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -504,8 +504,7 @@ extern void unregister_cld_notifier(void);
 extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn);
 #endif
 
-extern int nfsd4_init_leases_net(struct nfsd_net *nn);
-extern void nfsd4_leases_net_shutdown(struct nfsd_net *nn);
+extern void nfsd4_init_leases_net(struct nfsd_net *nn);
 
 #else /* CONFIG_NFSD_V4 */
 static inline int nfsd4_is_junction(struct dentry *dentry)
@@ -513,8 +512,7 @@ static inline int nfsd4_is_junction(struct dentry *dentry)
 	return 0;
 }
 
-static inline int nfsd4_init_leases_net(struct nfsd_net *nn) { return 0; };
-static inline void nfsd4_leases_net_shutdown(struct nfsd_net *nn) {};
+static inline void nfsd4_init_leases_net(struct nfsd_net *nn) { };
 
 #define register_cld_notifier() 0
 #define unregister_cld_notifier() do { } while(0)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 07895deca271..1535e7c92435 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1497,7 +1497,7 @@ static void __queue_work(int cpu, struct workqueue_struct *wq,
 	trace_workqueue_queue_work(req_cpu, pwq, work);
 
 	if (WARN_ON(!list_empty(&work->entry)))
-		goto out;
+		panic("wq[%px] work[%px]\n", wq, work);
 
 	pwq->nr_in_flight[pwq->work_color]++;
 	work_flags = work_color_to_flags(pwq->work_color);
@@ -1651,9 +1651,12 @@ static void __queue_delayed_work(int cpu, struct workqueue_struct *wq,
 	struct work_struct *work = &dwork->work;
 
 	WARN_ON_ONCE(!wq);
-	WARN_ON_ONCE(timer->function != delayed_work_timer_fn);
+	if (WARN_ON_ONCE(timer->function != delayed_work_timer_fn))
+		panic("wq[%px] dwork[%px] timer->function[%px]\n",
+			wq, dwork, timer->function);
 	WARN_ON_ONCE(timer_pending(timer));
-	WARN_ON_ONCE(!list_empty(&work->entry));
+	if (WARN_ON_ONCE(!list_empty(&work->entry)))
+		panic("wq[%px] dwork[%px]\n", wq, dwork);
 
 	/*
 	 * If @delay is 0, queue @dwork->work immediately.  This is for
-- 
2.9.5

Re: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

On Sun, 2023-01-08 at 16:50 -0800, dai.ngo@oracle.com wrote:
> Hi Mike,

Greetings,

> Could you give the v2 patch a try? I will send you the location
> to upload the core, if it happens, in a private email.

V2 cured it.  I also verified that virgin rc3 still does spew/brick.

	-Mike

Re: regression: nfs mount (even idle) eventually hangs server

[dai.ngo]

On 1/8/23 6:41 PM, Mike Galbraith wrote:
> On Sun, 2023-01-08 at 16:50 -0800, dai.ngo@oracle.com wrote:
>> Hi Mike,
> Greetings,
>
>> Could you give the v2 patch a try? I will send you the location
>> to upload the core, if it happens, in a private email.
> V2 cured it.  I also verified that virgin rc3 still does spew/brick.

Thank you much Mike!

-Dai

summary: regression: nfs mount (even idle) eventually hangs server

[Mike Galbraith]

Executive summary:
44df6f439a17 is the seeming culprit, as taking it and its 3959066b697b
dependency back to 6.1 introduces the problem there, and reverting same
in master cures it.

Reproducer:
mount box:/$pick_a_spot /mnt (server may even mount itself)
find /mnt -type f -exec md5sum {} \;
As that executes, run LTP testcases/bin/min_free_kbytes (or likely any
similar memory hog) on server.  Abbreviated spew below should follow in
short order, and brick server.

Here it just works, real box, VM or even cute little raspberry pi 4b.

Abbreviated workqueue spew:
> [ 1171.959773] ------------[ cut here ]------------
> [ 1171.959792] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1654 __queue_delayed_work+0x6a/0x90
> [ 1171.959804] Modules linked in: netconsole(E) af_packet(E) hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E) snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E) nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E) regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E) snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E) r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E) snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E) soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.959869]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E) configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E) i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E) sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E) aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E) crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1171.959962] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted: G            E      6.1.0.g6feb57c-master #41
> [ 1171.959969] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1171.959972] RIP: 0010:__queue_delayed_work+0x6a/0x90
> [ 1171.959981] Code: 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7 e9 1b b1 07 00 e9 46 e8 ff ff 0f 0b eb cc 0f 0b 48 81 7a 38 20 32 0a 81 74 aa <0f> 0b 48 8b 42 28 48 85 c0 74 a8 0f 0b eb a4 89 fe 4c 89 c7 e9 1d
> [ 1171.959988] RSP: 0018:ffff8881010a7c78 EFLAGS: 00010003
> [ 1171.959992] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
> [ 1171.959997] RDX: ffff88818016b748 RSI: ffff88810a0bae00 RDI: 0000000000000008
> [ 1171.960001] RBP: ffff88818016b748 R08: 0000000000000000 R09: 0000000000000000
> [ 1171.960005] R10: 0000000000000000 R11: 000000000354f7fb R12: 0000000000000008
> [ 1171.960010] R13: ffff88810a0bae00 R14: 0000000000000000 R15: ffff88818016b710
> [ 1171.960015] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000) knlGS:0000000000000000
> [ 1171.960019] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.960022] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4: 00000000001706e0
> [ 1171.960026] Call Trace:
> [ 1171.960033]  <TASK>
> [ 1171.960038]  mod_delayed_work_on+0x49/0x70
> [ 1171.960049]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.960113]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.960122]  shrink_node+0x1c5/0x420
> [ 1171.960129]  balance_pgdat+0x25f/0x530
> [ 1171.960137]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960143]  kswapd+0x12c/0x360
> [ 1171.960149]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960155]  ? __pfx_kswapd+0x10/0x10
> [ 1171.960161]  kthread+0xc0/0xe0
> [ 1171.960167]  ? __pfx_kthread+0x10/0x10
> [ 1171.960172]  ret_from_fork+0x29/0x50
> [ 1171.960180]  </TASK>
> [ 1171.960184] ---[ end trace 0000000000000000 ]---
> [ 1171.960190] ------------[ cut here ]------------
> [ 1171.960193] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1656 __queue_delayed_work+0x5a/0x90
> [ 1171.960202] Modules linked in: netconsole(E) af_packet(E) hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E) snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E) nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E) regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E) snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E) r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E) snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E) soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.960259]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E) configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E) i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E) sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E) aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E) crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1171.960352] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.960358] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1171.960363] RIP: 0010:__queue_delayed_work+0x5a/0x90
> [ 1171.960369] Code: 8b 05 0a 47 16 01 4c 8d 42 20 48 89 72 48 89 7a 50 48 01 c1 83 ff 08 48 89 4a 30 75 2c 4c 89 c7 e9 1b b1 07 00 e9 46 e8 ff ff <0f> 0b eb cc 0f 0b 48 81 7a 38 20 32 0a 81 74 aa 0f 0b 48 8b 42 28
> [ 1171.960377] RSP: 0018:ffff8881010a7c78 EFLAGS: 00010003
> [ 1171.960383] RAX: ffff88818016b750 RBX: 0000000000000000 RCX: 0000000000000000
> [ 1171.960388] RDX: ffff88818016b748 RSI: ffff88810a0bae00 RDI: 0000000000000008
> [ 1171.960394] RBP: ffff88818016b748 R08: 0000000000000000 R09: 0000000000000000
> [ 1171.960453] R10: 0000000000000000 R11: 000000000354f7fb R12: 0000000000000008
> [ 1171.960459] R13: ffff88810a0bae00 R14: 0000000000000000 R15: ffff88818016b710
> [ 1171.960463] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000) knlGS:0000000000000000
> [ 1171.960468] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.960473] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4: 00000000001706e0
> [ 1171.960478] Call Trace:
> [ 1171.960481]  <TASK>
> [ 1171.960484]  mod_delayed_work_on+0x49/0x70
> [ 1171.960492]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.960542]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.960550]  shrink_node+0x1c5/0x420
> [ 1171.960557]  balance_pgdat+0x25f/0x530
> [ 1171.960564]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960571]  kswapd+0x12c/0x360
> [ 1171.960578]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960583]  ? __pfx_kswapd+0x10/0x10
> [ 1171.960589]  kthread+0xc0/0xe0
> [ 1171.960594]  ? __pfx_kthread+0x10/0x10
> [ 1171.960599]  ret_from_fork+0x29/0x50
> [ 1171.960607]  </TASK>
> [ 1171.960611] ---[ end trace 0000000000000000 ]---
> [ 1171.960617] ------------[ cut here ]------------
> [ 1171.960620] WARNING: CPU: 4 PID: 81 at kernel/workqueue.c:1499 __queue_work+0x33b/0x3d0
> [ 1171.960628] Modules linked in: netconsole(E) af_packet(E) hid_logitech_hidpp(E) joydev(E) usblp(E) hid_logitech_dj(E) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) bridge(E) stp(E) llc(E) iscsi_ibft(E) iscsi_boot_sysfs(E) rfkill(E) nfnetlink(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) bpfilter(E) intel_rapl_msr(E) intel_rapl_common(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) coretemp(E) snd_hda_codec_hdmi(E) iTCO_wdt(E) snd_hda_intel(E) at24(E) nls_iso8859_1(E) kvm_intel(E) intel_pmc_bxt(E) snd_intel_dspcfg(E) regmap_i2c(E) mei_hdcp(E) nls_cp437(E) iTCO_vendor_support(E) snd_hda_codec(E) snd_hwdep(E) kvm(E) snd_hda_core(E) irqbypass(E) r8169(E) pcspkr(E) snd_pcm(E) realtek(E) i2c_i801(E) mei_me(E) snd_timer(E) mdio_devres(E) snd(E) lpc_ich(E) i2c_smbus(E) libphy(E) soundcore(E) mfd_core(E) mei(E) fan(E) thermal(E) intel_smartconnect(E) nfsd(E) auth_rpcgss(E) nfs_acl(E)
> [ 1171.960687]  lockd(E) sch_fq_codel(E) grace(E) fuse(E) sunrpc(E) configfs(E) ip_tables(E) x_tables(E) uas(E) usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E) i2c_algo_bit(E) drm_display_helper(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) drm_kms_helper(E) sha512_ssse3(E) ahci(E) sha512_generic(E) xhci_pci(E) syscopyarea(E) aesni_intel(E) sysfillrect(E) libahci(E) ehci_pci(E) sysimgblt(E) crypto_simd(E) xhci_hcd(E) ehci_hcd(E) cryptd(E) drm(E) libata(E) cec(E) usbcore(E) usb_common(E) rc_core(E) video(E) wmi(E) button(E) sd_mod(E) t10_pi(E) crc64_rocksoft_generic(E) crc64_rocksoft(E) crc64(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virtio(E) virtio_ring(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) loop(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) scsi_common(E) msr(E) efivarfs(E) autofs4(E)
> [ 1171.960775] CPU: 4 PID: 81 Comm: kswapd0 Kdump: loaded Tainted: G        W   E      6.1.0.g6feb57c-master #41
> [ 1171.960781] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> [ 1171.960787] RIP: 0010:__queue_work+0x33b/0x3d0
> [ 1171.960793] Code: 25 40 d3 02 00 f6 47 2c 20 74 18 e8 6f 6f 00 00 48 85 c0 74 0e 48 8b 40 20 48 3b 68 08 0f 84 f5 fc ff ff 0f 0b e9 fe fd ff ff <0f> 0b e9 ee fd ff ff 83 c9 02 49 8d 57 68 e9 d7 fd ff ff 80 3d f3
> [ 1171.960801] RSP: 0018:ffff8881010a7c38 EFLAGS: 00010003
> [ 1171.960807] RAX: ffff88818016b750 RBX: ffffffff81fcc880 RCX: 0000000000000000
> [ 1171.960811] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888100078000
> [ 1171.960816] RBP: ffff88810a0bae00 R08: ffff888100400028 R09: ffff888100400000
> [ 1171.960821] R10: 0000000000000000 R11: ffffffff8225d5c8 R12: 0000000000000008
> [ 1171.960826] R13: 0000000000000004 R14: ffff88818016b748 R15: ffff888120a5e000
> [ 1171.960831] FS:  0000000000000000(0000) GS:ffff88840ed00000(0000) knlGS:0000000000000000
> [ 1171.960838] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1171.960842] CR2: 00007f39558dc000 CR3: 00000001b893a002 CR4: 00000000001706e0
> [ 1171.960848] Call Trace:
> [ 1171.960853]  <TASK>
> [ 1171.960857]  mod_delayed_work_on+0x49/0x70
> [ 1171.960864]  nfsd4_state_shrinker_count+0x24/0x50 [nfsd]
> [ 1171.960912]  shrink_slab.constprop.94+0x9d/0x370
> [ 1171.960919]  shrink_node+0x1c5/0x420
> [ 1171.960926]  balance_pgdat+0x25f/0x530
> [ 1171.960932]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960939]  kswapd+0x12c/0x360
> [ 1171.960945]  ? __pfx_autoremove_wake_function+0x10/0x10
> [ 1171.960950]  ? __pfx_kswapd+0x10/0x10
> [ 1171.960956]  kthread+0xc0/0xe0
> [ 1171.960961]  ? __pfx_kthread+0x10/0x10
> [ 1171.960965]  ret_from_fork+0x29/0x50
> [ 1171.960973]  </TASK>
> [ 1171.960976] ---[ end trace 0000000000000000 ]---