Additional info: reporter: libreport-2.2.2 WARNING: CPU: 0 PID: 801 at arch/x86/kernel/check.c:140 check_for_bios_corruption+0xcb/0x120() Memory corruption detected in low memory Modules linked in: ccm ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw snd_hda_codec_realtek arc4 snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_controller iwldvm snd_hda_codec mac80211 snd_hwdep coretemp kvm_intel kvm iwlwifi iTCO_wdt snd_seq iTCO_vendor_support snd_seq_device joydev serio_raw snd_pcm microcode sdhci_pci uvcvideo i2c_i801 cfg80211 sdhci sony_laptop snd_timer mmc_core lpc_ich r592 videobuf2_vmalloc memstick mfd_core videobuf2_memops videobuf2_core v4l2_common videodev btusb snd shpchp tpm_tis tpm_infineon bluetooth tpm media soundcore acpi_cpufreq video rfkill nfsd auth_rpcgss nfs_acl lockd sunrpc dm_crypt radeon firewire_ohci i2c_algo_bit drm_kms_helper firewire_core crc_itu_t ttm sky2 drm i2c_core CPU: 0 PID: 801 Comm: kworker/0:3 Not tainted 3.16.0-0.rc2.git3.1.fc21.x86_64 #1 Hardware name: Sony Corporation VGN-SR49VN_H/VAIO, BIOS R3220Y1 08/05/2009 Workqueue: events check_corruption 0000000000000000 000000004a4c167c ffff8801385f3c58 ffffffff81807c4c ffff8801385f3ca0 ffff8801385f3c90 ffffffff8109b3ed 0000000000000000 ffff880000010000 ffffffff823f9810 0000000000000001 ffff880000000000 Call Trace: [<ffffffff81807c4c>] dump_stack+0x4d/0x66 [<ffffffff8109b3ed>] warn_slowpath_common+0x7d/0xa0 [<ffffffff8109b46c>] warn_slowpath_fmt+0x5c/0x80 [<ffffffff8106058b>] check_for_bios_corruption+0xcb/0x120 [<ffffffff810605ee>] check_corruption+0xe/0x40 [<ffffffff810c0551>] process_one_work+0x211/0x6f0 [<ffffffff810c04e5>] ? process_one_work+0x1a5/0x6f0 [<ffffffff810c0a9b>] worker_thread+0x6b/0x540 [<ffffffff810c0a30>] ? process_one_work+0x6f0/0x6f0 [<ffffffff810c8d38>] kthread+0x108/0x120 [<ffffffff810e1d68>] ? sched_clock_cpu+0x98/0xc0 [<ffffffff810ff71d>] ? trace_hardirqs_on_caller+0x15d/0x200 [<ffffffff810c8c30>] ? insert_kthread_work+0x80/0x80 [<ffffffff818117bc>] ret_from_fork+0x7c/0xb0 [<ffffffff810c8c30>] ? insert_kthread_work+0x80/0x80
Created attachment 912967 [details] File: dmesg
This is a check telling you that firmware is corrupting lowmem on your machine. There's nothing the kernel can do for this outside of what it's already doing.