12.12.2016 06:26, Carlos E. R. пишет:
Hi,
What should I think of this?
Some BIOSes are known to corrupt low memory under some condition (like resuming from suspend). Kernel contains check that tries to detect this condition and avoid using this area. See memory_corruption_check and memory_corruption_check_size kernel parameters. So there is little you can do except attempt to find BIOS update or report it to your BIOS/motherboard vendor.
It is a warning, not an error, apparently. In the BIOS, perhaps.
<0.3> 2016-12-11T13:37:26.094997+01:00 Isengard kernel - - - [382640.164069] Corrupted low memory at ffff880000002000 (2000 phys) = 0000f0f6 <0.4> 2016-12-11T13:37:26.095031+01:00 Isengard kernel - - - [382640.164092] ------------[ cut here ]------------ <0.4> 2016-12-11T13:37:26.095034+01:00 Isengard kernel - - - [382640.164111] WARNING: CPU: 1 PID: 7380 at ../arch/x86/kernel/check.c:141 check_for_bios_corruption+0xf9/0x110() <0.3> 2016-12-11T13:37:26.095036+01:00 Isengard kernel - - - [382640.164114] Memory corruption detected in low memory <0.4> 2016-12-11T13:37:26.095037+01:00 Isengard kernel - - - [382640.164116] Modules linked in: rfcomm fuse nf_log_ipv6 xt_pkttype nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_recent af_packet iscsi_ibft iscsi_boot_sysfs ip6t_REJECT nf_reject_ipv6 xt_tcpudp nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_raw ipt_REJECT nf_reject_ipv4 iptable_raw xt_CT iptable_filter bnep ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_ipv4 nf_defrag_ipv4 ip_tables xt_conntrack nf_conntrack ip6table_filter ip6_tables x_tables dm_crypt snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic xfs libcrc32c intel_rapl intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel jitterentropy_rng nls_iso8859_1 arc4 nls_cp437 vfat fat dm_mod drbg ansi_cprng joydev hid_logitech_hidpp iTCO_wdt iTCO_vendor_support iwlmvm mac80211 msi_wmi sparse_keymap snd_hda_intel snd_hda_codec snd_intel_sst_acpi i915 snd_hda_core aesni_intel snd_intel_sst_core drm_kms_helper btusb iwlwifi drm aes_x86_64 btrtl snd_soc_rt5670 lrw fb_sys_fops btbcm gf128mul snd_soc_sst_mfld_platform hid_logitech_dj pcspkr r8169 btintel snd_hwdep serio_raw snd_soc_rl6231 lpc_ich glue_helper bluetooth mii mfd_core ablk_helper cryptd snd_soc_core i2c_i801 cfg80211 nxp_nci_i2c snd_compress syscopyarea sysfillrect sysimgblt nxp_nci mei_txe i2c_algo_bit shpchp mei snd_pcm nci thermal fan nfc snd_timer regmap_i2c battery snd wmi fjes i2c_designware_platform i2c_designware_core video rfkill_gpio rfkill soundcore 8250_dw pwm_lpss_platform pwm_lpss pinctrl_cherryview button processor sunrpc ext4 crc16 jbd2 mbcache uas usb_storage usbhid sd_mod ahci libahci xhci_pci xhci_hcd usbcore usb_common libata sdhci_pci i2c_hid sdhci_acpi sdhci mmc_core sg scsi_mod efivarfs autofs4 <0.4> 2016-12-11T13:37:26.095040+01:00 Isengard kernel - - - [382640.164309] CPU: 1 PID: 7380 Comm: kworker/1:2 Not tainted 4.4.27-2-default #1 <0.4> 2016-12-11T13:37:26.095042+01:00 Isengard kernel - - - [382640.164313] Hardware name: Micro-Star International Co., Ltd. MS-B120/MS-B120, BIOS EB120IMS.820 03/03/2016 <0.4> 2016-12-11T13:37:26.095043+01:00 Isengard kernel - - - [382640.164321] Workqueue: events check_corruption <0.4> 2016-12-11T13:37:26.095044+01:00 Isengard kernel - - - [382640.164323] 0000000000000000 ffffffff81327657 ffff880063aa7d98 ffffffff81a4c986 <0.4> 2016-12-11T13:37:26.095046+01:00 Isengard kernel - - - [382640.164329] ffffffff8107e821 0000000000000000 ffff880063aa7de8 ffffffff821edff0 <0.4> 2016-12-11T13:37:26.095047+01:00 Isengard kernel - - - [382640.164334] 0000000000000001 ffff880000000000 ffffffff8107e89c ffffffff81a43dc0 <0.4> 2016-12-11T13:37:26.095048+01:00 Isengard kernel - - - [382640.164340] Call Trace: <0.4> 2016-12-11T13:37:26.095049+01:00 Isengard kernel - - - [382640.164358] [<ffffffff81019e69>] dump_trace+0x59/0x320 <0.4> 2016-12-11T13:37:26.095051+01:00 Isengard kernel - - - [382640.164368] [<ffffffff8101a22a>] show_stack_log_lvl+0xfa/0x180 <0.4> 2016-12-11T13:37:26.095052+01:00 Isengard kernel - - - [382640.164372] [<ffffffff8101afd1>] show_stack+0x21/0x40 <0.4> 2016-12-11T13:37:26.095053+01:00 Isengard kernel - - - [382640.164380] [<ffffffff81327657>] dump_stack+0x5c/0x85 <0.4> 2016-12-11T13:37:26.095054+01:00 Isengard kernel - - - [382640.164387] [<ffffffff8107e821>] warn_slowpath_common+0x81/0xb0 <0.4> 2016-12-11T13:37:26.095056+01:00 Isengard kernel - - - [382640.164395] [<ffffffff8107e89c>] warn_slowpath_fmt+0x4c/0x50 <0.4> 2016-12-11T13:37:26.095057+01:00 Isengard kernel - - - [382640.164400] [<ffffffff81060da9>] check_for_bios_corruption+0xf9/0x110 <0.4> 2016-12-11T13:37:26.095058+01:00 Isengard kernel - - - [382640.164408] [<ffffffff81060dca>] check_corruption+0xa/0x40 <0.4> 2016-12-11T13:37:26.095059+01:00 Isengard kernel - - - [382640.164413] [<ffffffff81097205>] process_one_work+0x155/0x440 <0.4> 2016-12-11T13:37:26.095060+01:00 Isengard kernel - - - [382640.164418] [<ffffffff81097d46>] worker_thread+0x116/0x4b0 <0.4> 2016-12-11T13:37:26.095062+01:00 Isengard kernel - - - [382640.164425] [<ffffffff8109d328>] kthread+0xc8/0xe0 <0.4> 2016-12-11T13:37:26.095063+01:00 Isengard kernel - - - [382640.164433] [<ffffffff8160978f>] ret_from_fork+0x3f/0x70 <0.4> 2016-12-11T13:37:26.095064+01:00 Isengard kernel - - - [382640.167228] DWARF2 unwinder stuck at ret_from_fork+0x3f/0x70 <0.4> 2016-12-11T13:37:26.095065+01:00 Isengard kernel - - - [382640.167231] <0.4> 2016-12-11T13:37:26.095067+01:00 Isengard kernel - - - [382640.167232] Leftover inexact backtrace: <0.4> 2016-12-11T13:37:26.095068+01:00 Isengard kernel - - - [382640.167232] <0.4> 2016-12-11T13:37:26.095069+01:00 Isengard kernel - - - [382640.167242] [<ffffffff8109d260>] ? kthread_park+0x50/0x50 <0.4> 2016-12-11T13:37:26.095070+01:00 Isengard kernel - - - [382640.167246] ---[ end trace 3ac627478cecce4d ]---
Machine is running Leap 42.2. Memtest passed with no errors.
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