Description of problem: I stopped my wifi-hotspot via the gnome gui and my system hung - cursor frozen, unable to switch to console. I have been having a problem with my system hanging when I started the hotspot. This is the first time it hung when I was stopping the hotspot. I also just started having major problems with boinc, today - likely not related to this. The hotspot functioned normally while it was up. Additional info: reporter: libreport-2.9.3 list_del corruption. prev->next should be 000000000616c80d, but was 000000001262dbe8 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:53! invalid opcode: 0000 [#1] SMP PTI Modules linked in: ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables sunrpc vfat fat arc4 rtl8723be btcoexist rtl8723_common intel_rapl rtl_pci x86_pkg_temp_thermal rtlwifi intel_powerclamp coretemp mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic kvm cfg80211 snd_hda_intel irqbypass iTCO_wdt snd_hda_codec crct10dif_pclmul crc32_pclmul iTCO_vendor_support snd_hda_core hp_wmi ghash_clmulni_intel sparse_keymap intel_cstate wmi_bmof intel_uncore snd_hwdep intel_rapl_perf snd_seq snd_seq_device snd_pcm btusb btrtl btbcm btintel usblp snd_timer snd joydev soundcore bluetooth ecdh_generic rfkill i2c_i801 shpchp wmi mei_me tpm_crb tpm_tis idma64 intel_lpss_pci pinctrl_sunrisepoint pinctrl_intel tpm_tis_core intel_lpss tpm mei acpi_pad i915 uas i2c_algo_bit usb_storage drm_kms_helper crc32c_intel drm serio_raw r8169 mii video CPU: 2 PID: 45 Comm: kworker/2:1 Not tainted 4.16.11-200.fc27.x86_64 #1 Hardware name: HP 260-p026/81B4, BIOS F.16 09/23/2016 Workqueue: rtl8723be_pci rtl_c2hcmd_wq_callback [rtlwifi] RIP: 0010:__list_del_entry_valid+0x73/0x90 RSP: 0000:ffffb0f900e2bd68 EFLAGS: 00010086 RAX: 0000000000000054 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff9d2af0516938 RDI: ffff9d2af0516938 RBP: ffff9d2ad6ff34d8 R08: 00000000000003ea R09: 0000000000aaaaaa R10: 0000000000000000 R11: 00000000ffffffff R12: ffff9d2ad6ff34e0 R13: ffff9d2ad6ff34e8 R14: ffffb0f900e2bd88 R15: ffff9d2ad6ff34e8 FS: 0000000000000000(0000) GS:ffff9d2af0500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fad3a723095 CR3: 000000019820a001 CR4: 00000000003606e0 Call Trace: wait_for_completion_timeout+0x142/0x190 ? wake_up_q+0x70/0x70 halbtc_send_bt_mp_operation.constprop.20+0x81/0x90 [btcoexist] halbtc_set_bt_reg+0x4a/0x90 [btcoexist] ex_btc8723b1ant_bt_info_notify+0x2d1/0x6d0 [btcoexist] rtl_c2hcmd_launcher+0xbb/0x120 [rtlwifi] process_one_work+0x175/0x360 worker_thread+0x2e/0x380 ? process_one_work+0x360/0x360 kthread+0x113/0x130 ? kthread_create_worker_on_cpu+0x70/0x70 ret_from_fork+0x35/0x40 Code: bc e8 2c 97 cb ff 0f 0b 48 89 fe 48 c7 c7 68 18 0e bc e8 1b 97 cb ff 0f 0b 48 89 f2 48 89 fe 48 c7 c7 a0 18 0e bc e8 07 97 cb ff <0f> 0b 48 c7 c7 e0 18 0e bc e8 f9 96 cb ff 0f 0b 90 90 90 90 90 RIP: __list_del_entry_valid+0x73/0x90 RSP: ffffb0f900e2bd68
Created attachment 1442009 [details] File: dmesg
No freeze today when I used hotspot - turning the hotspot on/of using the gnome gui / settings. However, this same abort happened today and one other time, when the system did not freeze. Despite the abort, the hotspot functioned normally, and I only know of the abrt because I checked the gnome gui Problem Reporting and also the journal.
With kernel 4.16.12-200.fc27.x86_64, system freeze when starting wifi (preparing to start hotspot) with gnome gui. [ 27.480069] list_del corruption. prev->next should be 0000000003e9a0c2, but was 0000000083f68ef2 [ 27.481910] ------------[ cut here ]------------ [ 27.481911] kernel BUG at lib/list_debug.c:53! [ 27.482857] invalid opcode: 0000 [#1] SMP PTI [ 27.483807] Modules linked in: ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables sunrpc vfat fat intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp arc4 kvm irqbypass crct10dif_pclmul crc32_pclmul rtl8723be ghash_clmulni_intel intel_cstate snd_hda_codec_hdmi intel_uncore btcoexist snd_hda_codec_realtek btusb intel_rapl_perf btrtl snd_hda_codec_generic btbcm btintel rtl8723_common snd_hda_intel rtl_pci bluetooth rtlwifi snd_hda_codec iTCO_wdt mac80211 iTCO_vendor_support snd_hda_core hp_wmi snd_hwdep sparse_keymap wmi_bmof snd_seq [ 27.494454] cfg80211 joydev usblp snd_seq_device snd_pcm ecdh_generic shpchp snd_timer rfkill snd soundcore idma64 intel_lpss_pci i2c_i801 wmi pinctrl_sunrisepoint tpm_crb tpm_tis tpm_tis_core tpm pinctrl_intel mei_me mei acpi_pad intel_lpss i915 i2c_algo_bit drm_kms_helper uas usb_storage drm crc32c_intel serio_raw r8169 mii video [ 27.500051] CPU: 2 PID: 45 Comm: kworker/2:1 Not tainted 4.16.12-200.fc27.x86_64 #1 [ 27.501457] Hardware name: HP 260-p026/81B4, BIOS F.16 09/23/2016 [ 27.502882] Workqueue: rtl8723be_pci rtl_c2hcmd_wq_callback [rtlwifi] [ 27.504806] RIP: 0010:__list_del_entry_valid+0x73/0x90 [ 27.506485] RSP: 0018:ffffb58c80e2bd68 EFLAGS: 00010086 [ 27.507938] RAX: 0000000000000054 RBX: 0000000000000000 RCX: 0000000000000000 [ 27.509376] RDX: 0000000000000000 RSI: ffff9c4730516938 RDI: ffff9c4730516938 [ 27.510814] RBP: ffff9c470e0a10d8 R08: 00000000000003ed R09: 0000000000aaaaaa [ 27.512378] R10: 0000000000000000 R11: 00000000ffffffff R12: ffff9c470e0a10e0 [ 27.513826] R13: ffff9c470e0a10e8 R14: ffffb58c80e2bd88 R15: ffff9c470e0a10e8 [ 27.515285] FS: 0000000000000000(0000) GS:ffff9c4730500000(0000) knlGS:0000000000000000 [ 27.516770] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.518271] CR2: 00007fd00c00d228 CR3: 000000023720a001 CR4: 00000000003606e0 [ 27.519815] Call Trace: [ 27.521340] wait_for_completion_timeout+0x142/0x190 [ 27.522972] ? wake_up_q+0x70/0x70 [ 27.524495] halbtc_send_bt_mp_operation.constprop.20+0x81/0x90 [btcoexist] [ 27.526083] halbtc_set_bt_reg+0x4a/0x90 [btcoexist] [ 27.527688] ex_btc8723b1ant_bt_info_notify+0x2d1/0x6d0 [btcoexist] [ 27.529235] rtl_c2hcmd_launcher+0xbb/0x120 [rtlwifi] [ 27.530757] process_one_work+0x175/0x360 [ 27.532267] worker_thread+0x2e/0x380 [ 27.533774] ? process_one_work+0x360/0x360 [ 27.535266] kthread+0x113/0x130 [ 27.536704] ? kthread_create_worker_on_cpu+0x70/0x70 [ 27.538136] ret_from_fork+0x35/0x40 [ 27.539529] Code: b8 e8 1c 97 cb ff 0f 0b 48 89 fe 48 c7 c7 78 18 0e b8 e8 0b 97 cb ff 0f 0b 48 89 f2 48 89 fe 48 c7 c7 b0 18 0e b8 e8 f7 96 cb ff <0f> 0b 48 c7 c7 f0 18 0e b8 e8 e9 96 cb ff 0f 0b 90 90 90 90 90 [ 27.543780] RIP: __list_del_entry_valid+0x73/0x90 RSP: ffffb58c80e2bd68 [ 27.545182] ---[ end trace d60429702b5fecd2 ]--- [ 27.802135] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready [ 28.260938] r8169 0000:01:00.0 enp1s0: link up [ 28.265670] IPv6: ADDRCONF(NETDEV_CHANGE): enp1s0: link becomes ready [ 28.830835] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready [ 58.333713] fuse init (API version 7.26) [ 62.025694] rfkill: input handler disabled
After upgrading to F28 on June 1, I have not experienced any more problems with wifi / hotspot, using either nmcli or gnome wifi settings gui - no more freezes.