[Kernel-packages] [Bug 1789519] Re: Low Memory corruption logged in syslog
** Attachment added: "Makefile" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+attachment/5185076/+files/Makefile -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1789519 Title: Low Memory corruption logged in syslog Status in linux package in Ubuntu: Confirmed Bug description: Dell Inspiron 3847 Desktop running Ubuntu 18.04.1 LTS kernel: 4.15.0-33-generic Corrupted low memory messages logged in syslog Can be reproduced with script: #!/bin/bash # log to syslog... logger -st low_mem_corruption.sh "Checking for low memory corruption with kernel $(uname -rv)..." # this will cause syslog messages on affected kernels... cat /proc/i8k logger -st low_mem_corruption.sh "Please wait for 90 secs to ensure low memory test has completed..." # sleep for 1.5 mins - enough time for mem check every 60 secs... sleep 90 logger -st low_mem_corruption.sh "Check for low memory corruption done! Was anything logged in syslog?" Kernels tested: Kernel 4.15.0-29-generic - fine Kernel 4.15.0-30-generic - fine Kernel 4.15.0-30-generic - Never installed, do not know - did it exist? Kernel 4.15.0-32-generic - Low Memory corruption! Kernel 4.15.0-33-generic - Low Memory corruption! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: bossman1316 F pulseaudio /dev/snd/pcmC1D0p: bossman1316 F...m pulseaudio /dev/snd/controlC1: bossman1316 F pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Aug 28 16:56:01 2018 HibernationDevice: RESUME=UUID=1c065a24-2acf-43dc-bf3d-1382f3bbf0ac InstallationDate: Installed on 2018-05-12 (108 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3847 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=a5dec663-366e-4ecc-a17a-ce4219c54897 ro quiet loglevel=3 splash RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/10/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 088DT1 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/10/2018:svnDellInc.:pnInspiron3847:pvr:rvnDellInc.:rn088DT1:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.family: To be filled by O.E.M. dmi.product.name: Inspiron 3847 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1789519] Re: Low Memory corruption logged in syslog
** Attachment added: "dell-smm-hwmon.c" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+attachment/5185075/+files/dell-smm-hwmon.c -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1789519 Title: Low Memory corruption logged in syslog Status in linux package in Ubuntu: Confirmed Bug description: Dell Inspiron 3847 Desktop running Ubuntu 18.04.1 LTS kernel: 4.15.0-33-generic Corrupted low memory messages logged in syslog Can be reproduced with script: #!/bin/bash # log to syslog... logger -st low_mem_corruption.sh "Checking for low memory corruption with kernel $(uname -rv)..." # this will cause syslog messages on affected kernels... cat /proc/i8k logger -st low_mem_corruption.sh "Please wait for 90 secs to ensure low memory test has completed..." # sleep for 1.5 mins - enough time for mem check every 60 secs... sleep 90 logger -st low_mem_corruption.sh "Check for low memory corruption done! Was anything logged in syslog?" Kernels tested: Kernel 4.15.0-29-generic - fine Kernel 4.15.0-30-generic - fine Kernel 4.15.0-30-generic - Never installed, do not know - did it exist? Kernel 4.15.0-32-generic - Low Memory corruption! Kernel 4.15.0-33-generic - Low Memory corruption! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: bossman1316 F pulseaudio /dev/snd/pcmC1D0p: bossman1316 F...m pulseaudio /dev/snd/controlC1: bossman1316 F pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Aug 28 16:56:01 2018 HibernationDevice: RESUME=UUID=1c065a24-2acf-43dc-bf3d-1382f3bbf0ac InstallationDate: Installed on 2018-05-12 (108 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3847 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=a5dec663-366e-4ecc-a17a-ce4219c54897 ro quiet loglevel=3 splash RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/10/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 088DT1 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/10/2018:svnDellInc.:pnInspiron3847:pvr:rvnDellInc.:rn088DT1:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.family: To be filled by O.E.M. dmi.product.name: Inspiron 3847 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1789519] Re: Low Memory corruption logged in syslog
** Attachment added: "low_mem_corruption.sh" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+attachment/5185077/+files/low_mem_corruption.sh -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1789519 Title: Low Memory corruption logged in syslog Status in linux package in Ubuntu: Confirmed Bug description: Dell Inspiron 3847 Desktop running Ubuntu 18.04.1 LTS kernel: 4.15.0-33-generic Corrupted low memory messages logged in syslog Can be reproduced with script: #!/bin/bash # log to syslog... logger -st low_mem_corruption.sh "Checking for low memory corruption with kernel $(uname -rv)..." # this will cause syslog messages on affected kernels... cat /proc/i8k logger -st low_mem_corruption.sh "Please wait for 90 secs to ensure low memory test has completed..." # sleep for 1.5 mins - enough time for mem check every 60 secs... sleep 90 logger -st low_mem_corruption.sh "Check for low memory corruption done! Was anything logged in syslog?" Kernels tested: Kernel 4.15.0-29-generic - fine Kernel 4.15.0-30-generic - fine Kernel 4.15.0-30-generic - Never installed, do not know - did it exist? Kernel 4.15.0-32-generic - Low Memory corruption! Kernel 4.15.0-33-generic - Low Memory corruption! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: bossman1316 F pulseaudio /dev/snd/pcmC1D0p: bossman1316 F...m pulseaudio /dev/snd/controlC1: bossman1316 F pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Aug 28 16:56:01 2018 HibernationDevice: RESUME=UUID=1c065a24-2acf-43dc-bf3d-1382f3bbf0ac InstallationDate: Installed on 2018-05-12 (108 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3847 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=a5dec663-366e-4ecc-a17a-ce4219c54897 ro quiet loglevel=3 splash RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/10/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 088DT1 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/10/2018:svnDellInc.:pnInspiron3847:pvr:rvnDellInc.:rn088DT1:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.family: To be filled by O.E.M. dmi.product.name: Inspiron 3847 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1789519] Re: Low Memory corruption logged in syslog
Since I reported this issue I have tried to debug this problem and found that the function call to 'i8k_get_fn_status' in the kernel module 'dell-smm-hwmon' (code at https://github.com/torvalds/linux/blob/master/drivers/hwmon/dell-smm-hwmon.c) is what causes low memory corruption on Dell Inspiron 3847. This affects the procfs '/proc/i8k' interface only when kernel compiled with 'CONFIG_I8K' I have downloaded kernel module from https://github.com/torvalds/linux/blob/master/drivers/hwmon/dell-smm-hwmon.c and modified/compiled to debug/test this issue with possible fixes. A possible fix involves disallowing 'i8k_get_fn_status' calls for affected machines using a blacklist. I have attached modified kernel module code and makefile used as well as script and script output to check problem once modified module is loaded. Attachments: dell-smm-hwmon.c Makefile low_mem_corruption.sh script_output.txt I suspect this issue may affect other Dell machines (not just Inspiron 3847) ?? (see https://bugs.launchpad.net/i8kutils/+bug/1179282/comments/41) During the process of figuring out the likely problem I have found that the Dell SMM/BIOS seems to be buggy on various machines! Testing of modified module has been done under Ubuntu 18.04.1 LTS 4.15.0-29-generic, and 4.15.0-33-generic kernels and Linux Mint Tara 19 (4.15.0-29-generic, 4.15.0-33-generic kernels) and Linux Mint Tara 17.3 (4.4.0-134-generic, old 3.19.0-32-generic kernel) Output of tests in in attached file 'script_output.txt'. The low memory corruption problem can be reproduced on the Dell Inspiron 3847 running: Ubuntu 18.04.1 LTS, 4.15.0-32-generic Ubuntu 18.04.1 LTS, 4.15.0-33-generic Ubuntu 18.04.1 LTS, 4.19-rc1 upstream kernel (4.19.0-041900rc1) Linux Mint 19 Tara, 4.15.0-32-generic Linux Mint 19 Tara, 4.15.0-33-generic Linux Mint 17.3, OLD 3.19.0-32-generic kernel Linux Mint 17.3, 4.4.0-134-generic kernel Low memory corruption problem DOES NOT OCCUR on: Ubuntu 18.04.1 LTS, 4.15.0-29-generic Ubuntu 18.04.1 LTS, 4.15.0-30-generic Linux Mint 19 Tara, 4.15.0-29-generic I have no idea why there is different behaviour running under the different kernels noted above. Does this imply the problem may be in changes to the kernel? I am new to kernel modules and this is my first attempt at debugging one but I hope the info here is useful in fixing the problem and can be passed on to the maintainer. from https://github.com/torvalds/linux/blob/master/MAINTAINERS DELL LAPTOP SMM DRIVER M: Pali Rohár S: Maintained F: drivers/hwmon/dell-smm-hwmon.c ** Attachment added: "script_output.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+attachment/5185074/+files/script_output.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1789519 Title: Low Memory corruption logged in syslog Status in linux package in Ubuntu: Confirmed Bug description: Dell Inspiron 3847 Desktop running Ubuntu 18.04.1 LTS kernel: 4.15.0-33-generic Corrupted low memory messages logged in syslog Can be reproduced with script: #!/bin/bash # log to syslog... logger -st low_mem_corruption.sh "Checking for low memory corruption with kernel $(uname -rv)..." # this will cause syslog messages on affected kernels... cat /proc/i8k logger -st low_mem_corruption.sh "Please wait for 90 secs to ensure low memory test has completed..." # sleep for 1.5 mins - enough time for mem check every 60 secs... sleep 90 logger -st low_mem_corruption.sh "Check for low memory corruption done! Was anything logged in syslog?" Kernels tested: Kernel 4.15.0-29-generic - fine Kernel 4.15.0-30-generic - fine Kernel 4.15.0-30-generic - Never installed, do not know - did it exist? Kernel 4.15.0-32-generic - Low Memory corruption! Kernel 4.15.0-33-generic - Low Memory corruption! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: bossman1316 F pulseaudio /dev/snd/pcmC1D0p: bossman1316 F...m pulseaudio /dev/snd/controlC1: bossman1316 F pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Aug 28 16:56:01 2018 HibernationDevice: RESUME=UUID=1c065a24-2acf-43dc-bf3d-1382f3bbf0ac InstallationDate: Installed on 2018-05-12 (108 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3847 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_CA.UTF-8 SHELL=/bin/bash
[Kernel-packages] [Bug 1789519] Re: Low Memory corruption logged in syslog
Tested the 4.19-rc1 upstream kernel (4.19.0-041900rc1) and the issue still exists! dmesg output showing "Memory corruption detected in low memory" attached. ** Attachment added: "Low Memory Corruption - dmesg for kernel 4.19-rc1.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+attachment/5182330/+files/Low%20Memory%20Corruption%20-%20dmesg%20for%20kernel%204.19-rc1.txt ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1789519 Title: Low Memory corruption logged in syslog Status in linux package in Ubuntu: Confirmed Bug description: Dell Inspiron 3847 Desktop running Ubuntu 18.04.1 LTS kernel: 4.15.0-33-generic Corrupted low memory messages logged in syslog Can be reproduced with script: #!/bin/bash # log to syslog... logger -st low_mem_corruption.sh "Checking for low memory corruption with kernel $(uname -rv)..." # this will cause syslog messages on affected kernels... cat /proc/i8k logger -st low_mem_corruption.sh "Please wait for 90 secs to ensure low memory test has completed..." # sleep for 1.5 mins - enough time for mem check every 60 secs... sleep 90 logger -st low_mem_corruption.sh "Check for low memory corruption done! Was anything logged in syslog?" Kernels tested: Kernel 4.15.0-29-generic - fine Kernel 4.15.0-30-generic - fine Kernel 4.15.0-30-generic - Never installed, do not know - did it exist? Kernel 4.15.0-32-generic - Low Memory corruption! Kernel 4.15.0-33-generic - Low Memory corruption! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: bossman1316 F pulseaudio /dev/snd/pcmC1D0p: bossman1316 F...m pulseaudio /dev/snd/controlC1: bossman1316 F pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Aug 28 16:56:01 2018 HibernationDevice: RESUME=UUID=1c065a24-2acf-43dc-bf3d-1382f3bbf0ac InstallationDate: Installed on 2018-05-12 (108 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3847 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=a5dec663-366e-4ecc-a17a-ce4219c54897 ro quiet loglevel=3 splash RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/10/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 088DT1 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/10/2018:svnDellInc.:pnInspiron3847:pvr:rvnDellInc.:rn088DT1:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.family: To be filled by O.E.M. dmi.product.name: Inspiron 3847 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1789519] Re: Low Memory corruption logged in syslog
Further Details on Problem: Typical syslog output: Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.424273] Corrupted low memory at a78dba88 (1000 phys) = 6110 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.424282] Corrupted low memory at d190a321 (1008 phys) = 1101c ... Many more Corrupted low memory lines ... Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.426877] Corrupted low memory at 77c65d2a (2428 phys) = 205135322078796e Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.426881] Corrupted low memory at 481794f1 (2430 phys) = 736569726553 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.426885] Corrupted low memory at 46f2b1b0 (2448 phys) = 8000 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.426905] [ cut here ] Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.426906] Memory corruption detected in low memory Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.426926] WARNING: CPU: 0 PID: 218 at /build/linux-81MBYC/linux-4.15.0/arch/x86/kernel/check.c:142 check_for_bios_corruption+0xab/0x100 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.426928] Modules linked in: nls_iso8859_1 ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype input_leds nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns snd_hda_codec_hdmi sch_fq_codel dcdbas dell_smm_hwmon intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul snd_hda_codec_realtek crc32_pclmul snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel pcbc snd_hda_codec arc4 snd_hda_core snd_hwdep snd_pcm nf_conntrack_broadcast aesni_intel ath9k aes_x86_64 ath9k_common crypto_simd glue_helper cryptd intel_cstate ath9k_hw intel_rapl_perf ath snd_seq_midi snd_seq_midi_event mac80211 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427018] snd_rawmidi snd_seq cfg80211 ath3k btusb btrtl btbcm btintel snd_seq_device lpc_ich snd_timer bluetooth snd ecdh_generic mei_me mei soundcore shpchp mac_hid parport_pc nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack libcrc32c ppdev iptable_filter lp parport ip_tables x_tables autofs4 hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci drm r8169 libahci mii video Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427090] CPU: 0 PID: 218 Comm: kworker/0:2 Not tainted 4.15.0-33-generic #36-Ubuntu Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427092] Hardware name: Dell Inc. Inspiron 3847/088DT1 , BIOS A10 05/10/2018 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427099] Workqueue: events check_corruption Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427108] RIP: 0010:check_for_bios_corruption+0xab/0x100 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427110] RSP: 0018:b45cc1ee3e38 EFLAGS: 00010282 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427114] RAX: RBX: 88470001 RCX: 0006 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427117] RDX: 0007 RSI: 0092 RDI: 884a1fa16490 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427119] RBP: b45cc1ee3e68 R08: R09: 05db Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427122] R10: R11: aff5380d R12: Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427124] R13: aff2d4f0 R14: 0001 R15: 8000 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427129] FS: () GS:884a1fa0() knlGS: Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427131] CS: 0010 DS: ES: CR0: 80050033 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427134] CR2: 7f7e3b6a8008 CR3: 0e80a004 CR4: 001606f0 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427137] Call Trace: Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427149] check_corruption+0xe/0x40 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427155] process_one_work+0x1de/0x410 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427161] worker_thread+0x32/0x410 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427167] kthread+0x121/0x140 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427172] ? process_one_work+0x410/0x410 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427178] ? kthread_create_worker_on_cpu+0x70/0x70 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427185] ? mm_account_pinned_pages.part.52+0x90/0x90 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427193] ret_from_fork+0x35/0x40 Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427196] Code: c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 c3 80 3d 10 31 5a 01 00 75 e6 48 c7 c7 70 3d 6c af c6 05 00 31 5a 01 01 e8 35 f4 01 00 <0f> 0b eb cf 48 89 da 4c 01 fa 72 35 4c 89 c0 48 2b 05 f7 d3 3d Aug 28 16:48:34 Inspiron-3847 kernel: [ 62.427279] ---[ end trace
[Kernel-packages] [Bug 1789519] [NEW] Low Memory corruption logged in syslog
Public bug reported: Dell Inspiron 3847 Desktop running Ubuntu 18.04.1 LTS kernel: 4.15.0-33-generic Corrupted low memory messages logged in syslog Can be reproduced with script: #!/bin/bash # log to syslog... logger -st low_mem_corruption.sh "Checking for low memory corruption with kernel $(uname -rv)..." # this will cause syslog messages on affected kernels... cat /proc/i8k logger -st low_mem_corruption.sh "Please wait for 90 secs to ensure low memory test has completed..." # sleep for 1.5 mins - enough time for mem check every 60 secs... sleep 90 logger -st low_mem_corruption.sh "Check for low memory corruption done! Was anything logged in syslog?" Kernels tested: Kernel 4.15.0-29-generic - fine Kernel 4.15.0-30-generic - fine Kernel 4.15.0-30-generic - Never installed, do not know - did it exist? Kernel 4.15.0-32-generic - Low Memory corruption! Kernel 4.15.0-33-generic - Low Memory corruption! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: bossman1316 F pulseaudio /dev/snd/pcmC1D0p: bossman1316 F...m pulseaudio /dev/snd/controlC1: bossman1316 F pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Aug 28 16:56:01 2018 HibernationDevice: RESUME=UUID=1c065a24-2acf-43dc-bf3d-1382f3bbf0ac InstallationDate: Installed on 2018-05-12 (108 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3847 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=a5dec663-366e-4ecc-a17a-ce4219c54897 ro quiet loglevel=3 splash RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/10/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 088DT1 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/10/2018:svnDellInc.:pnInspiron3847:pvr:rvnDellInc.:rn088DT1:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.family: To be filled by O.E.M. dmi.product.name: Inspiron 3847 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1789519 Title: Low Memory corruption logged in syslog Status in linux package in Ubuntu: New Bug description: Dell Inspiron 3847 Desktop running Ubuntu 18.04.1 LTS kernel: 4.15.0-33-generic Corrupted low memory messages logged in syslog Can be reproduced with script: #!/bin/bash # log to syslog... logger -st low_mem_corruption.sh "Checking for low memory corruption with kernel $(uname -rv)..." # this will cause syslog messages on affected kernels... cat /proc/i8k logger -st low_mem_corruption.sh "Please wait for 90 secs to ensure low memory test has completed..." # sleep for 1.5 mins - enough time for mem check every 60 secs... sleep 90 logger -st low_mem_corruption.sh "Check for low memory corruption done! Was anything logged in syslog?" Kernels tested: Kernel 4.15.0-29-generic - fine Kernel 4.15.0-30-generic - fine Kernel 4.15.0-30-generic - Never installed, do not know - did it exist? Kernel 4.15.0-32-generic - Low Memory corruption! Kernel 4.15.0-33-generic - Low Memory corruption! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: bossman1316 F pulseaudio /dev/snd/pcmC1D0p: bossman1316 F...m pulseaudio /dev/snd/controlC1: bossman1316 F pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Aug 28 16:56:01 2018 HibernationDevice: RESUME=UUID=1c065a24-2acf-43dc-bf3d-1382f3bbf0ac InstallationDate: Installed on 2018-05-12 (108 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3847 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic
