[SOLVED] kernel: unable to handle paging request

Alad · 2019-10-23 20:28:02

This one has me stumped and has haunted me since at least kernel 5.1.16. At some point after booting, applications like amixer, i3status, ... stop working - they simply hang. Graphical applications such as browsers however remain functional.

Looking at the journal I notice the following messages:

Oct 23 21:56:47 foxden kernel: BUG: unable to handle kernel paging request at 0000000007000050

journalctl -b 0 output: https://paste.xinu.at/OeyuS/

Note that I'm using linux-lts because linux 5.3 has severe hibernate/suspend issues on this laptop (HP EliteBook 840 G1).

Linux foxden 4.19.80-1-lts #1 SMP Fri Oct 18 05:03:40 UTC 2019 x86_64 GNU/Linux

lspci -v: https://paste.xinu.at/4fy/

When searching for this issue only vague reports with no solution come up, e.g. https://bugs.launchpad.net/ubuntu/+sour … ug/1787695. Shutting down the system afterward is no longer possible, because systemd-shutdown is waiting for processes, and sending SIGKILL has no effect.

Any thoughts on how to proceed?

Last edited by Alad (2019-11-26 10:32:37)

seth · 2019-10-23 21:20:55

The particular issue seems directly after waking from a hibernation and crashes in the soundcore module - is this significant or random?
Can you launch new (graphical) processes after this happens?

Alad · 2019-10-23 23:22:21

Thanks. I use hibernation fairly often due to LUKS. It does appear to happen more or less consistently after a few hibernates. Launching graphical processes still seems to work.

Would reloading the soundcore module help in this case? I've tried removing it first, but had:

[root@foxden ~]# rmmod -f soundcore
rmmod: ERROR: could not remove 'soundcore': Resource temporarily unavailable
rmmod: ERROR: could not remove module soundcore: Resource temporarily unavailable

The same when trying to remove the modules that use soundcore:

[root@foxden ~]# rmmod -f snd_hda_codec_generic snd_hda_codec_hdmi snd_hwdep snd_hda_intel snd_hda_codec snd_timer snd_pcm snd_hda_codec_idt snd soundcore
rmmod: ERROR: could not remove 'snd_hda_codec_hdmi': No such file or directory
rmmod: ERROR: could not remove module snd_hda_codec_hdmi: No such file or directory
rmmod: ERROR: could not remove 'snd_hwdep': Resource temporarily unavailable
rmmod: ERROR: could not remove module snd_hwdep: Resource temporarily unavailable
rmmod: ERROR: could not remove 'snd_hda_intel': No such file or directory
rmmod: ERROR: could not remove module snd_hda_intel: No such file or directory
rmmod: ERROR: could not remove 'snd_timer': Resource temporarily unavailable
rmmod: ERROR: could not remove module snd_timer: Resource temporarily unavailable
rmmod: ERROR: could not remove 'snd_pcm': Resource temporarily unavailable
rmmod: ERROR: could not remove module snd_pcm: Resource temporarily unavailable
rmmod: ERROR: could not remove 'snd_hda_codec_idt': No such file or directory
rmmod: ERROR: could not remove module snd_hda_codec_idt: No such file or directory
rmmod: ERROR: could not remove 'snd': Resource temporarily unavailable
rmmod: ERROR: could not remove module snd: Resource temporarily unavailable
rmmod: ERROR: could not remove 'soundcore': Resource temporarily unavailable
rmmod: ERROR: could not remove module soundcore: Resource temporarily unavailable

Surely there is a way to recover from a crash in the module? Since most of the unkillable processes were instances of amixer, I'm guessing you're on the right path.

seth · 2019-10-24 07:40:15

Please look at your journals and ensure that issue always resulted in a soundcode crash (at least anything in a snd_* function) to rule out that this isn't a corrupted hibernation image or maybe related to processor C-states.

Ensure to stop all audio daemons (notably pulseaudio, but really anything that shows up in "lsof -t /dev/snd/*") and try to simply reset the sound system:
https://wiki.archlinux.org/index.php/Ad … ing_codecs

Alad · 2019-10-31 10:54:36

You were right, on a next resume from hibernate it was a different crash:

Oct 30 12:37:42 foxden kernel: general protection fault: 0000 [#1] SMP PTI
Oct 30 12:37:42 foxden kernel: CPU: 2 PID: 28730 Comm: astroid Tainted: G    B             4.19.80-1-lts #1
Oct 30 12:37:42 foxden kernel: Hardware name: Hewlett-Packard HP EliteBook 840 G1/198F, BIOS L71 Ver. 01.30 12/09/2014
Oct 30 12:37:42 foxden kernel: RIP: 0010:kmem_cache_alloc+0x79/0x1a0
Oct 30 12:37:42 foxden kernel: Code: 7d 61 49 83 78 10 00 4d 8b 20 0f 84 fb 00 00 00 4d 85 e4 0f 84 f2 00 00 00 41 8b 5f 20 49 8b 3f 48 8d 4a 01 4c 89 e0 4c 01 e3 <48> 33 1b 49 33 9f 38 01 00 00 65 48 0f c7 0f 0f 94 c0 84 c0 74 b2
Oct 30 12:37:42 foxden kernel: RSP: 0018:ffffb109c52cbd60 EFLAGS: 00010202
Oct 30 12:37:42 foxden kernel: RAX: 5eb2ee522ae2314f RBX: 5eb2ee522ae2314f RCX: 0000000000ac7991
Oct 30 12:37:42 foxden kernel: RDX: 0000000000ac7990 RSI: 00000000006000c0 RDI: 00002dcac941a640
Oct 30 12:37:42 foxden kernel: RBP: 00000000006000c0 R08: ffffd109bfc9a640 R09: ffffa33ef0d3d020
Oct 30 12:37:42 foxden kernel: R10: ffffa33ef0d3dad8 R11: 0000000000000026 R12: 5eb2ee522ae2314f
Oct 30 12:37:42 foxden kernel: R13: ffffffff9e680b3a R14: ffffa33ef641de00 R15: ffffa33ef0b53200
Oct 30 12:37:42 foxden kernel: FS:  00007ff282545c40(0000) GS:ffffa33ef6880000(0000) knlGS:0000000000000000
Oct 30 12:37:42 foxden kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 30 12:37:42 foxden kernel: CR2: 00007ff282546250 CR3: 00000001751d4004 CR4: 00000000001606e0
Oct 30 12:37:42 foxden kernel: Call Trace:
Oct 30 12:37:42 foxden kernel:  vm_area_dup+0x1a/0x40
Oct 30 12:37:42 foxden kernel:  copy_process.part.0+0x1765/0x1e90
Oct 30 12:37:42 foxden kernel:  _do_fork+0xdb/0x3f0
Oct 30 12:37:42 foxden kernel:  ? syscall_trace_enter+0x1b6/0x2b0
Oct 30 12:37:42 foxden kernel:  ? __do_pipe_flags+0x53/0xd0
Oct 30 12:37:42 foxden kernel:  ? do_pipe2+0x80/0xc0
Oct 30 12:37:42 foxden kernel:  do_syscall_64+0x4e/0x100
Oct 30 12:37:42 foxden kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Oct 30 12:37:42 foxden kernel: RIP: 0033:0x7ff289419aef
Oct 30 12:37:42 foxden kernel: Code: ed 0f 85 f4 00 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 8d 00 00 00 41 89 c5 85 c0 0f 85 9a 00 00
Oct 30 12:37:42 foxden kernel: RSP: 002b:00007fff49569390 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
Oct 30 12:37:42 foxden kernel: RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff289419aef
Oct 30 12:37:42 foxden kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
Oct 30 12:37:42 foxden kernel: RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ff282545c40
Oct 30 12:37:42 foxden kernel: R10: 00007ff282545f10 R11: 0000000000000246 R12: 0000000000000001
Oct 30 12:37:42 foxden kernel: R13: 00007fff49569510 R14: 00007fff495697a0 R15: 0000000000000000
Oct 30 12:37:42 foxden kernel: Modules linked in: rfcomm bridge stp llc joydev ccm snd_hda_codec_hdmi intel_rapl mousedev x86_pkg_temp_thermal intel_powerclamp coretemp arc4 i915 snd_hda_codec_idt snd_hda_codec_generic kvmgt vfio_mdev mdev cmac snd_hda_intel vfio_iommu_type1 vfio algif_hash snd_hda_codec iptable_nat nf_nat_ipv4 kvm nf_nat mei_wdt iwlmvm nf_conntrack algif_skcipher uvcvideo nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c af_alg snd_hda_core bnep iptable_mangle iptable_filter mac80211 videobuf2_vmalloc snd_hwdep videobuf2_memops videobuf2_v4l2 i2c_algo_bit drm_kms_helper irqbypass videobuf2_common intel_cstate snd_pcm ofpart hp_wmi drm iwlwifi videodev sparse_keymap cmdlinepart snd_timer intel_spi_platform intel_spi intel_gtt spi_nor agpgart iTCO_wdt snd syscopyarea wmi_bmof mtd iTCO_vendor_support intel_uncore
Oct 30 12:37:42 foxden kernel:  intel_rapl_perf sysfillrect rtsx_pci_ms media pcspkr uas cfg80211 tpm_infineon mei_me sysimgblt e1000e fb_sys_fops input_leds mei soundcore i2c_i801 lpc_ich psmouse wmi battery memstick hp_accel pcc_cpufreq lis3lv02d tpm_tis tpm_tis_core input_polldev tpm evdev ac rng_core hp_wireless mac_hid intel_smartconnect btusb btrtl btbcm btintel bluetooth ecdh_generic rfkill ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 usb_storage dm_crypt dm_mod sd_mod crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc rtsx_pci_sdmmc mmc_core serio_raw atkbd libps2 aesni_intel ahci aes_x86_64 libahci crypto_simd cryptd glue_helper libata scsi_mod rtsx_pci xhci_pci ehci_pci xhci_hcd ehci_hcd i8042 serio
Oct 30 12:37:42 foxden kernel: ---[ end trace 912e4a59854a9288 ]---

The difference being that now the whole graphical interface was frozen (switching to a TTY etc. had no effect, I did not try to SSH to the machine).

Complete log: https://paste.xinu.at/sla/

Last edited by Alad (2019-10-31 10:56:16)

seth · 2019-10-31 13:42:03

There're mem allocation errors all over the place, one in the i915 module (likely cause of the frozen graphics) - can you easily try a different (unencrypted) hibernation image/partition/device?

I assume this is not a dual booting system (whether windows or different distros) and nothing is supposed to touch the device that holds the hibernation image?

Alad · 2019-11-26 10:32:22

I'd have to resize my partitions to have space for an unencrypted hibernation image (or so I believe). Last time I tried resize2fs it didn't end up well...

I don't dual boot. Anyway I did as you hinted at in #4 and disabled "Deep Sleep" in the BIOS. This laptop has a host of other issues, but at least I haven't seen paging errors or similar issues on hibernate (with 5.1.16) again. Thanks!

Last edited by Alad (2019-11-26 10:33:25)

Arch Linux

#1 2019-10-23 20:28:02

[SOLVED] kernel: unable to handle paging request

#2 2019-10-23 21:20:55

Re: [SOLVED] kernel: unable to handle paging request

#3 2019-10-23 23:22:21

Re: [SOLVED] kernel: unable to handle paging request

#4 2019-10-24 07:40:15

Re: [SOLVED] kernel: unable to handle paging request

#5 2019-10-31 10:54:36

Re: [SOLVED] kernel: unable to handle paging request

#6 2019-10-31 13:42:03

Re: [SOLVED] kernel: unable to handle paging request

#7 2019-11-26 10:32:22

Re: [SOLVED] kernel: unable to handle paging request

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