Public bug reported:
Happened twice last night, precisely one hour apart
root@nas:/var/log# grep "Dec 23 0[23]:13:" /var/log/syslog*
/var/log/syslog:Dec 23 02:13:01 nas CRON[156065]: (root) CMD (date >>
/var/log/sensors.log; /usr/bin/sensors -f >> /var/log/sensors.log)
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404588] BUG: kernel NULL
pointer dereference, address: 0000000000000408
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404607] #PF: supervisor
write access in kernel mode
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404616] #PF:
error_code(0x0002) - not-present page
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404626] PGD 0 P4D 0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404632] Oops: 0002 [#1] SMP
NOPTI
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404640] CPU: 6 PID: 130
Comm: kswapd0 Not tainted 5.4.0-58-generic #64-Ubuntu
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404652] Hardware name:
Gigabyte Technology Co., Ltd. Z390 GAMING X/Z390 GAMING X-CF, BIOS F6 12/04/2018
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404671] RIP:
0010:dentry_unlink_inode+0x56/0x110
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404680] Code: 00 08 00 74 08
65 48 ff 05 6f ee 32 6f 49 8b 84 24 b8 00 00 00 48 85 c0 74 2c 49 8b 94 24 b0
00 00 00 48 89 10 48 85 d2 74 04 <48> 89 42 08 49 c7 84 24 b0 00 00 00 00 00 00
00 49 c7 84 24 b8 00
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404708] RSP:
0018:ffffb70540327b18 EFLAGS: 00010206
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404718] RAX:
ffff9131de578680 RBX: ffff9134d3266c00 RCX: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404732] RDX:
0000000000000400 RSI: ffff91395d9c9fa8 RDI: ffff9134d32666c0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404746] RBP:
ffffb70540327b28 R08: 00000000000002ad R09: ffffb70540327cb0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404760] R10:
0000000000000000 R11: 0000000000000010 R12: ffff9134d32666c0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404772] R13:
ffff9131de578548 R14: ffff9134d32666c0 R15: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404786] FS:
0000000000000000(0000) GS:ffff91395e380000(0000) knlGS:0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404800] CS: 0010 DS: 0000
ES: 0000 CR0: 0000000080050033
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404810] CR2:
0000000000000408 CR3: 0000000117e0a006 CR4: 00000000003606e0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404822] DR0:
0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404837] DR3:
0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404851] Call Trace:
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404858]
__dentry_kill+0xdf/0x180
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404866]
shrink_dentry_list+0x4e/0xc0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404874]
prune_dcache_sb+0x5c/0x80
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404882]
super_cache_scan+0xfe/0x1b0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404891]
do_shrink_slab+0x150/0x2a0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404900]
shrink_slab+0x20c/0x2a0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404908]
shrink_node+0xd3/0x410
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404916]
balance_pgdat+0x319/0x590
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404924] kswapd+0x1f8/0x3c0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404932] ?
wait_woken+0x80/0x80
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404940] kthread+0x104/0x140
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404946] ?
balance_pgdat+0x590/0x590
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404954] ?
kthread_park+0x90/0x90
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.404963]
ret_from_fork+0x35/0x40
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.405418] Modules linked in:
ipt_REJECT nf_reject_ipv4 xt_multiport xt_MASQUERADE xt_nat xt_dscp xt_DSCP
xt_hashlimit xt_length xt_tcpudp xt_state xt_conntrack nf_log_ipv4
nf_log_common xt_LOG iptable_nat nf_nat nf_conntrack nf_defrag_ipv6
nf_defrag_ipv4 iptable_mangle iptable_filter bpfilter binfmt_misc nls_iso8859_1
dm_multipath si2157 scsi_dh_rdac scsi_dh_emc scsi_dh_alua lgdt3306a cx231xx_dvb
dvb_core cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
videobuf_core i2c_mux videodev mc intel_rapl_msr mei_hdcp intel_rapl_common
x86_pkg_temp_thermal intel_powerclamp kvm_intel snd_hda_codec_hdmi kvm rapl
intel_cstate snd_sof_pci snd_sof_intel_hda_common snd_soc_hdac_hda
snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof
snd_sof_xtensa_dsp snd_hda_codec_realtek snd_hda_ext_core
snd_soc_acpi_intel_match snd_hda_codec_generic snd_soc_acpi ledtrig_audio
ir_rc5_decoder snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine
snd_hda_intel input_leds snd_intel_dspcfg
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.405433] serio_raw
snd_hda_codec wmi_bmof intel_wmi_thunderbolt snd_hda_core snd_hwdep snd_pcm
snd_timer snd rc_hauppauge soundcore mei_me mceusb rc_core mei
intel_pch_thermal mac_hid acpi_pad sch_fq_codel coretemp parport_pc ppdev lp
parport ip_tables x_tables autofs4 xfs btrfs zstd_compress raid10 raid0
multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 hid_generic usbhid hid uas usb_storage
i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel i2c_algo_bit aesni_intel
drm_kms_helper syscopyarea crypto_simd sysfillrect cryptd glue_helper sysimgblt
fb_sys_fops mpt3sas e1000e drm ahci i2c_i801 raid_class libahci
scsi_transport_sas wmi video pinctrl_cannonlake pinctrl_intel
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.412038] CR2: 0000000000000408
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.412691] ---[ end trace
466b9c24cd6670ed ]---
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.413311] RIP:
0010:dentry_unlink_inode+0x56/0x110
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.413933] Code: 00 08 00 74 08
65 48 ff 05 6f ee 32 6f 49 8b 84 24 b8 00 00 00 48 85 c0 74 2c 49 8b 94 24 b0
00 00 00 48 89 10 48 85 d2 74 04 <48> 89 42 08 49 c7 84 24 b0 00 00 00 00 00 00
00 49 c7 84 24 b8 00
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.415280] RSP:
0018:ffffb70540327b18 EFLAGS: 00010206
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.415934] RAX:
ffff9131de578680 RBX: ffff9134d3266c00 RCX: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.416604] RDX:
0000000000000400 RSI: ffff91395d9c9fa8 RDI: ffff9134d32666c0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.417267] RBP:
ffffb70540327b28 R08: 00000000000002ad R09: ffffb70540327cb0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.417934] R10:
0000000000000000 R11: 0000000000000010 R12: ffff9134d32666c0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.418598] R13:
ffff9131de578548 R14: ffff9134d32666c0 R15: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.419266] FS:
0000000000000000(0000) GS:ffff91395e380000(0000) knlGS:0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.419945] CS: 0010 DS: 0000
ES: 0000 CR0: 0000000080050033
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.420630] CR2:
0000000000000408 CR3: 0000000117e0a006 CR4: 00000000003606e0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.421309] DR0:
0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.421991] DR3:
0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.625982] BUG: kernel NULL
pointer dereference, address: 0000000000000440
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.626656] #PF: supervisor read
access in kernel mode
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.627383] #PF:
error_code(0x0000) - not-present page
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.628053] PGD 798ef0067 P4D
798ef0067 PUD 6f3888067 PMD 0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.628756] Oops: 0000 [#2] SMP
NOPTI
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.629421] CPU: 0 PID: 156086
Comm: Plex Media Scan Tainted: G D 5.4.0-58-generic #64-Ubuntu
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.630091] Hardware name:
Gigabyte Technology Co., Ltd. Z390 GAMING X/Z390 GAMING X-CF, BIOS F6 12/04/2018
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.630767] RIP:
0010:dentry_unlink_inode+0xa4/0x110
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.631420] Code: 7c 24 58 c6 07
00 0f 1f 40 00 49 8d bd 88 00 00 00 c6 07 00 0f 1f 40 00 41 8b 45 48 85 c0 74
32 49 8b 44 24 60 48 85 c0 74 1a <48> 8b 40 40 48 85 c0 74 11 4c 89 ee 4c 89 e7
e8 98 74 b0 00 41 5c
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.632752] RSP:
0000:ffffb70542487838 EFLAGS: 00010206
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.633420] RAX:
0000000000000400 RBX: ffff91381489b000 RCX: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.634093] RDX:
0000000000000000 RSI: ffff91395e00f160 RDI: ffff9133089831d0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.634763] RBP:
ffffb70542487848 R08: 00000000000002a1 R09: ffffb705424879d0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.635433] R10:
0000000000000000 R11: 0000000000000010 R12: ffff9134d3265000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.636104] R13:
ffff913308983148 R14: ffff9134d3265000 R15: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.636823] FS:
00007f85b8718bc0(0000) GS:ffff91395e200000(0000) knlGS:0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.637554] CS: 0010 DS: 0000
ES: 0000 CR0: 0000000080050033
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.638221] CR2:
0000000000000440 CR3: 00000002959c4003 CR4: 00000000003606f0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.638892] DR0:
0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.639564] DR3:
0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.640231] Call Trace:
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.640898]
__dentry_kill+0xdf/0x180
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.641566]
shrink_dentry_list+0x4e/0xc0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.642234]
prune_dcache_sb+0x5c/0x80
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.642904]
super_cache_scan+0xfe/0x1b0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.643572]
do_shrink_slab+0x150/0x2a0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.644239]
shrink_slab+0x20c/0x2a0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.644916]
shrink_node+0xd3/0x410
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.645586]
do_try_to_free_pages+0xd7/0x3a0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.646254]
try_to_free_pages+0xea/0x1d0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.646925]
__alloc_pages_slowpath+0x447/0xe50
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.647638] ?
touch_atime+0x33/0xe0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.648344] ?
generic_file_buffered_read+0x9ac/0xc10
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.649019] ?
get_page_from_freelist+0x6b/0x390
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.649695]
__alloc_pages_nodemask+0x2d0/0x320
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.650356]
alloc_pages_vma+0x7f/0x200
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.651004]
do_anonymous_page+0x118/0x650
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.651660] ?
xfs_iunlock+0x85/0x100 [xfs]
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.652328]
__handle_mm_fault+0x760/0x7a0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.652942]
handle_mm_fault+0xca/0x200
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.653531]
do_user_addr_fault+0x1f9/0x450
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.654116]
__do_page_fault+0x58/0x90
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.654675]
do_page_fault+0x2c/0xe0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.655227] page_fault+0x34/0x40
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.655757] RIP: 0033:0x62be90
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.656306] Code: 01 00 00 48 89
f0 48 8d 76 f0 44 39 78 f4 75 ea 44 01 70 f0 e9 e5 01 00 00 90 4a 89 04 f9 48
8b 5c 24 58 48 3b 5c 24 60 74 22 <44> 89 33 44 89 7b 04 f2 0f 11 5b 08 48 83 c3
10 48 89 5c 24 58 48
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.657366] RSP:
002b:00007ffd9342cde0 EFLAGS: 00010287
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.657958] RAX:
40a79b3d8dc46165 RBX: 00007f85acd9d000 RCX: 000000000233a540
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.658493] RDX:
00007ffd9342d168 RSI: 00007ffd9342d160 RDI: 000000000233a200
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.659015] RBP:
00007ffd9342ced8 R08: 0000000000000001 R09: 00007ffd9342cbf0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.659520] R10:
0000000000000008 R11: 0000000000000001 R12: 00007ffd9342d0e8
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.660021] R13:
0000000000000000 R14: 0000000000010aef R15: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.660554] Modules linked in:
ipt_REJECT nf_reject_ipv4 xt_multiport xt_MASQUERADE xt_nat xt_dscp xt_DSCP
xt_hashlimit xt_length xt_tcpudp xt_state xt_conntrack nf_log_ipv4
nf_log_common xt_LOG iptable_nat nf_nat nf_conntrack nf_defrag_ipv6
nf_defrag_ipv4 iptable_mangle iptable_filter bpfilter binfmt_misc nls_iso8859_1
dm_multipath si2157 scsi_dh_rdac scsi_dh_emc scsi_dh_alua lgdt3306a cx231xx_dvb
dvb_core cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
videobuf_core i2c_mux videodev mc intel_rapl_msr mei_hdcp intel_rapl_common
x86_pkg_temp_thermal intel_powerclamp kvm_intel snd_hda_codec_hdmi kvm rapl
intel_cstate snd_sof_pci snd_sof_intel_hda_common snd_soc_hdac_hda
snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof
snd_sof_xtensa_dsp snd_hda_codec_realtek snd_hda_ext_core
snd_soc_acpi_intel_match snd_hda_codec_generic snd_soc_acpi ledtrig_audio
ir_rc5_decoder snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine
snd_hda_intel input_leds snd_intel_dspcfg
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.660569] serio_raw
snd_hda_codec wmi_bmof intel_wmi_thunderbolt snd_hda_core snd_hwdep snd_pcm
snd_timer snd rc_hauppauge soundcore mei_me mceusb rc_core mei
intel_pch_thermal mac_hid acpi_pad sch_fq_codel coretemp parport_pc ppdev lp
parport ip_tables x_tables autofs4 xfs btrfs zstd_compress raid10 raid0
multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 hid_generic usbhid hid uas usb_storage
i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel i2c_algo_bit aesni_intel
drm_kms_helper syscopyarea crypto_simd sysfillrect cryptd glue_helper sysimgblt
fb_sys_fops mpt3sas e1000e drm ahci i2c_i801 raid_class libahci
scsi_transport_sas wmi video pinctrl_cannonlake pinctrl_intel
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.667646] CR2: 0000000000000440
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.668347] ---[ end trace
466b9c24cd6670ee ]---
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.668996] RIP:
0010:dentry_unlink_inode+0x56/0x110
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.669628] Code: 00 08 00 74 08
65 48 ff 05 6f ee 32 6f 49 8b 84 24 b8 00 00 00 48 85 c0 74 2c 49 8b 94 24 b0
00 00 00 48 89 10 48 85 d2 74 04 <48> 89 42 08 49 c7 84 24 b0 00 00 00 00 00 00
00 49 c7 84 24 b8 00
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.670932] RSP:
0018:ffffb70540327b18 EFLAGS: 00010206
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.671572] RAX:
ffff9131de578680 RBX: ffff9134d3266c00 RCX: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.672199] RDX:
0000000000000400 RSI: ffff91395d9c9fa8 RDI: ffff9134d32666c0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.672826] RBP:
ffffb70540327b28 R08: 00000000000002ad R09: ffffb70540327cb0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.673451] R10:
0000000000000000 R11: 0000000000000010 R12: ffff9134d32666c0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.674078] R13:
ffff9131de578548 R14: ffff9134d32666c0 R15: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.674706] FS:
00007f85b8718bc0(0000) GS:ffff91395e200000(0000) knlGS:0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.675338] CS: 0010 DS: 0000
ES: 0000 CR0: 0000000080050033
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.675968] CR2:
0000000000000440 CR3: 00000002959c4003 CR4: 00000000003606f0
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.676631] DR0:
0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/syslog:Dec 23 02:13:10 nas kernel: [54882.677257] DR3:
0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
/var/log/syslog:Dec 23 02:13:33 nas mono[1320]: [Info] RssSyncService: Starting
RSS Sync
/var/log/syslog:Dec 23 02:13:34 nas mono[1320]: [Info] DownloadDecisionMaker:
Processing 200 releases
/var/log/syslog:Dec 23 02:13:35 nas mono[1320]: [Info] RssSyncService: RSS Sync
Completed. Reports found: 200, Reports grabbed: 0
/var/log/syslog:Dec 23 03:13:01 nas CRON[160829]: (root) CMD (date >>
/var/log/sensors.log; /usr/bin/sensors -f >> /var/log/sensors.log)
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.575286] BUG: kernel NULL
pointer dereference, address: 0000000000000408
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.575941] #PF: supervisor
write access in kernel mode
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.576624] #PF:
error_code(0x0002) - not-present page
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.577288] PGD 0 P4D 0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.577922] Oops: 0002 [#3] SMP
NOPTI
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.578556] CPU: 7 PID: 88938
Comm: apache2 Tainted: G D 5.4.0-58-generic #64-Ubuntu
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.579207] Hardware name:
Gigabyte Technology Co., Ltd. Z390 GAMING X/Z390 GAMING X-CF, BIOS F6 12/04/2018
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.579872] RIP:
0010:dentry_unlink_inode+0x56/0x110
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.580538] Code: 00 08 00 74 08
65 48 ff 05 6f ee 32 6f 49 8b 84 24 b8 00 00 00 48 85 c0 74 2c 49 8b 94 24 b0
00 00 00 48 89 10 48 85 d2 74 04 <48> 89 42 08 49 c7 84 24 b0 00 00 00 00 00 00
00 49 c7 84 24 b8 00
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.581930] RSP:
0000:ffffb70542577588 EFLAGS: 00010206
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.582631] RAX:
ffff9137f0c3ce80 RBX: ffff9134d32613c0 RCX: 0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.583336] RDX:
0000000000000400 RSI: ffff91395c64bdf8 RDI: ffff9134d3261840
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.584043] RBP:
ffffb70542577598 R08: 0000000000000274 R09: ffffb70542577720
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.584754] R10:
0000000000000000 R11: 0000000000000010 R12: ffff9134d3261840
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.585464] R13:
ffff9137f0c3c948 R14: ffff9134d3261840 R15: 0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.586177] FS:
00007f84b41abc40(0000) GS:ffff91395e3c0000(0000) knlGS:0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.586933] CS: 0010 DS: 0000
ES: 0000 CR0: 0000000080050033
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.587667] CR2:
0000000000000408 CR3: 0000000810e0e004 CR4: 00000000003606e0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.588404] DR0:
0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.589132] DR3:
0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.589860] Call Trace:
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.590637]
__dentry_kill+0xdf/0x180
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.591368]
shrink_dentry_list+0x4e/0xc0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.592117]
prune_dcache_sb+0x5c/0x80
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.592855]
super_cache_scan+0xfe/0x1b0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.593594]
do_shrink_slab+0x150/0x2a0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.594322]
shrink_slab+0x20c/0x2a0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.595078]
shrink_node+0xd3/0x410
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.595768]
do_try_to_free_pages+0xd7/0x3a0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.596456]
try_to_free_pages+0xea/0x1d0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.597141]
__alloc_pages_slowpath+0x447/0xe50
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.597824] ?
__switch_to+0x110/0x470
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.598507] ?
__switch_to_asm+0x40/0x70
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.599235] ?
__switch_to_asm+0x34/0x70
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.599913] ?
get_page_from_freelist+0x6b/0x390
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.600577]
__alloc_pages_nodemask+0x2d0/0x320
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.601238]
alloc_pages_vma+0x7f/0x200
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.601875]
shmem_alloc_page+0x4e/0xa0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.602497]
shmem_alloc_and_acct_page+0x80/0x1d0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.603144]
shmem_getpage_gfp+0x174/0x940
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.603735]
shmem_fault+0x79/0x210
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.604311] ?
file_update_time+0x62/0x140
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.604871]
__do_fault+0x3c/0x130
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.605415] do_fault+0x38b/0x640
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.605945]
__handle_mm_fault+0x4c5/0x7a0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.606459]
handle_mm_fault+0xca/0x200
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.607042]
do_user_addr_fault+0x1f9/0x450
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.607534]
__do_page_fault+0x58/0x90
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.608024]
do_page_fault+0x2c/0xe0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.608528] page_fault+0x34/0x40
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.608997] RIP:
0033:0x7f84b43b5ad1
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.609450] Code: 01 00 00 48 83
fa 40 77 77 c5 fe 7f 44 17 e0 c5 fe 7f 07 c5 f8 77 c3 66 90 f3 0f 1e fa c5 f8
77 48 89 d1 40 0f b6 c6 48 89 fa <f3> aa 48 89 d0 c3 66 0f 1f 84 00 00 00 00 00
f3 0f 1e fa 48 39 d1
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.610412] RSP:
002b:00007ffc5807c0a8 EFLAGS: 00010206
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.610939] RAX:
0000000000000000 RBX: 00007f84b35579e0 RCX: 0000000000000ca0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.611426] RDX:
00007f84a7b18740 RSI: 0000000000000000 RDI: 00007f84a7b19000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.611911] RBP:
00007f84b2c7c380 R08: 00000000000015a0 R09: 00007f84a6d79048
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.612393] R10:
00007f84a6d79000 R11: 00000000072608d8 R12: 00007f84b3556720
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.612872] R13:
0000000000000004 R14: 0000000000000055 R15: 0000000000001560
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.613347] Modules linked in:
ipt_REJECT nf_reject_ipv4 xt_multiport xt_MASQUERADE xt_nat xt_dscp xt_DSCP
xt_hashlimit xt_length xt_tcpudp xt_state xt_conntrack nf_log_ipv4
nf_log_common xt_LOG iptable_nat nf_nat nf_conntrack nf_defrag_ipv6
nf_defrag_ipv4 iptable_mangle iptable_filter bpfilter binfmt_misc nls_iso8859_1
dm_multipath si2157 scsi_dh_rdac scsi_dh_emc scsi_dh_alua lgdt3306a cx231xx_dvb
dvb_core cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
videobuf_core i2c_mux videodev mc intel_rapl_msr mei_hdcp intel_rapl_common
x86_pkg_temp_thermal intel_powerclamp kvm_intel snd_hda_codec_hdmi kvm rapl
intel_cstate snd_sof_pci snd_sof_intel_hda_common snd_soc_hdac_hda
snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof
snd_sof_xtensa_dsp snd_hda_codec_realtek snd_hda_ext_core
snd_soc_acpi_intel_match snd_hda_codec_generic snd_soc_acpi ledtrig_audio
ir_rc5_decoder snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine
snd_hda_intel input_leds snd_intel_dspcfg
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.613363] serio_raw
snd_hda_codec wmi_bmof intel_wmi_thunderbolt snd_hda_core snd_hwdep snd_pcm
snd_timer snd rc_hauppauge soundcore mei_me mceusb rc_core mei
intel_pch_thermal mac_hid acpi_pad sch_fq_codel coretemp parport_pc ppdev lp
parport ip_tables x_tables autofs4 xfs btrfs zstd_compress raid10 raid0
multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 hid_generic usbhid hid uas usb_storage
i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel i2c_algo_bit aesni_intel
drm_kms_helper syscopyarea crypto_simd sysfillrect cryptd glue_helper sysimgblt
fb_sys_fops mpt3sas e1000e drm ahci i2c_i801 raid_class libahci
scsi_transport_sas wmi video pinctrl_cannonlake pinctrl_intel
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.620137] CR2: 0000000000000408
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.620721] ---[ end trace
466b9c24cd6670ef ]---
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.621305] RIP:
0010:dentry_unlink_inode+0x56/0x110
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.621887] Code: 00 08 00 74 08
65 48 ff 05 6f ee 32 6f 49 8b 84 24 b8 00 00 00 48 85 c0 74 2c 49 8b 94 24 b0
00 00 00 48 89 10 48 85 d2 74 04 <48> 89 42 08 49 c7 84 24 b0 00 00 00 00 00 00
00 49 c7 84 24 b8 00
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.623100] RSP:
0018:ffffb70540327b18 EFLAGS: 00010206
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.623709] RAX:
ffff9131de578680 RBX: ffff9134d3266c00 RCX: 0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.624322] RDX:
0000000000000400 RSI: ffff91395d9c9fa8 RDI: ffff9134d32666c0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.624934] RBP:
ffffb70540327b28 R08: 00000000000002ad R09: ffffb70540327cb0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.625559] R10:
0000000000000000 R11: 0000000000000010 R12: ffff9134d32666c0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.626166] R13:
ffff9131de578548 R14: ffff9134d32666c0 R15: 0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.626810] FS:
00007f84b41abc40(0000) GS:ffff91395e3c0000(0000) knlGS:0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.627425] CS: 0010 DS: 0000
ES: 0000 CR0: 0000000080050033
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.628039] CR2:
0000000000000408 CR3: 0000000810e0e004 CR4: 00000000003606e0
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.628659] DR0:
0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/syslog:Dec 23 03:13:41 nas kernel: [58513.629281] DR3:
0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-58-generic 5.4.0-58.64
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
Uname: Linux 5.4.0-58-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.4.0-58-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-id',
'/dev/snd/controlC1', '/dev/snd/pcmC1D0c', '/dev/snd/by-path',
'/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0',
'/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p',
'/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2c',
'/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
CasperMD5CheckResult: skip
Date: Wed Dec 23 07:56:37 2020
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 002 Device 002: ID 152d:0562 JMicron Technology Corp. / JMicron USA
Technology Corp. SSK-DK100
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 051d:0002 American Power Conversion Uninterruptible
Power Supply
Bus 001 Device 002: ID 2040:b123 Hauppauge Hauppauge Device
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Gigabyte Technology Co., Ltd. Z390 GAMING X
ProcEnviron:
TERM=vt100
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-58-generic
root=UUID=2b1bb3b3-9a79-416c-a103-ef8b020bf5e1 ro
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.4.0-58-generic N/A
linux-backports-modules-5.4.0-58-generic N/A
linux-firmware 1.187.6
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-06-12 (193 days ago)
dmi.bios.date: 12/04/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F6
dmi.board.asset.tag: Default string
dmi.board.name: Z390 GAMING X-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF6:bd12/04/2018:svnGigabyteTechnologyCo.,Ltd.:pnZ390GAMINGX:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnZ390GAMINGX-CF:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: Z390 GAMING X
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1909117
Title:
Repeated kernel OOPS in dentry_unlink_inode
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