Possible wireless issue introduced in next-20140930

[Murilo Opsfelder Araujo]

Hello, everyone.

With next-20140930 my laptop does not work, i.e. after I enter my login
and password in KDM, the entire system becomes unresponsive and I need
to reset it in order to reboot (it does not even show the KDE splash
screen).

It was working pretty fine with next-20140926.

I've also tested with next-20141022 and v3.18-rc1 and no luck.

git bisect pointed me to the commit below [1]. My wireless card is a
RTL8191SEvA [2].

I need your help to troubleshoot this.

Thanks in advance.

[1]
commit 38506ecefab911785d5e1aa5889f6eeb462e0954
Author: Larry Finger <***@lwfinger.net>
Date: Mon Sep 22 09:39:19 2014 -0500

rtlwifi: rtl_pci: Start modification for new drivers

Future patches will move the drivers for RTL8192EE and RTL8821AE
from staging to the regular wireless tree. Here, the necessary features
are added to the PCI driver. Other files are touched due to changes
in the various data structs.

Signed-off-by: Larry Finger <***@lwfinger.net>
Signed-off-by: John W. Linville <***@tuxdriver.com>

[2]
$ lspci -vvv
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvA
Wireless LAN Controller (rev 10)
Subsystem: Hewlett-Packard Company Device 1467
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: I/O ports at 3000 [size=256]
Region 1: Memory at d3400000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: rtl8192se

[Mike Galbraith]

On Thu, 2014-10-23 at 01:17 -0200, Murilo Opsfelder Araujo wrote:=20

Post by Murilo Opsfelder Araujo
Hello, everyone.
=20
With next-20140930 my laptop does not work, i.e. after I enter my log=

in=20

Post by Murilo Opsfelder Araujo
and password in KDM, the entire system becomes unresponsive and I nee=

d=20

Post by Murilo Opsfelder Araujo
to reset it in order to reboot (it does not even show the KDE splash=20
screen).
=20
It was working pretty fine with next-20140926.
=20
I've also tested with next-20141022 and v3.18-rc1 and no luck.
=20
git bisect pointed me to the commit below [1]. My wireless card is a=

=20

Post by Murilo Opsfelder Araujo
RTL8191SEvA [2].

Mine is RTL8191SEvB.

I was going to bisect RTL8191SE regression when I got a chance, but you
beat me to it.

Post by Murilo Opsfelder Araujo
commit 38506ecefab911785d5e1aa5889f6eeb462e0954
Date: Mon Sep 22 09:39:19 2014 -0500
=20
rtlwifi: rtl_pci: Start modification for new drivers

Did you confirm that bisection result, ie revert it at HEAD of whicheve=
r
tree you bisected?

The revert (master) removed some warnings on the way to kaboom here, bu=
t
the drivers is still toxic. My log follows in case it's the same thing=
=2E
I can't go hunting atm, maybe during the weekend if the problem hasn't
evaporate by then.

Master:
[ 28.028817] cfg80211: Calling CRDA to update world regulatory domain
[ 28.102230] cfg80211: World regulatory domain updated:
[ 28.103799] cfg80211: DFS Master region: unset
[ 28.103838] cfg80211: (start_freq - end_freq @ bandwidth), (max_an=
tenna_gain, max_eirp), (dfs_cac_time)
[ 28.107012] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (30=
0 mBi, 2000 mBm), (N/A)
[ 28.108663] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (30=
0 mBi, 2000 mBm), (N/A)
[ 28.110251] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (30=
0 mBi, 2000 mBm), (N/A)
[ 28.111837] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (30=
0 mBi, 2000 mBm), (N/A)
[ 28.113422] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (30=
0 mBi, 2000 mBm), (N/A)
[ 29.577727] rtl8192se 0000:08:00.0: enabling device (0000 -> 0003)
[ 29.618681] rtl8192se: FW Power Save off (module option)
[ 29.620355] rtl8192se: Driver for Realtek RTL8192SE/RTL8191SE
[ 29.620355] Loading firmware rtlwifi/rtl8192sefw.bin
[ 29.648444] ------------[ cut here ]------------
[ 29.650012] WARNING: CPU: 1 PID: 59 at fs/sysfs/dir.c:31 sysfs_warn_=
dup+0x68/0x80()
[ 29.651602] sysfs: cannot create duplicate filename '/devices/pci000=
0:00/0000:00:1c.5/0000:08:00.0/ieee80211/phy0'
[ 29.653278] Modules linked in: rtl8192se(+) rtl_pci rtlwifi mac80211=
cfg80211 btusb bluetooth coretemp iTCO_wdt iTCO_vendor_support serio_r=
aw microcode toshiba_acpi sparse_keymap snd_hda_codec_hdmi snd_hda_code=
c_conexant rfkill snd_hda_codec_generic pcspkr uvcvideo videobuf2_core =
v4l2_common videodev videobuf2_vmalloc videobuf2_memops joydev i2c_i801=
wmi lpc_ich mfd_core acpi_cpufreq toshiba_haps snd_hda_intel snd_hda_c=
ontroller snd_hda_codec snd_hwdep toshiba_bluetooth snd_pcm snd_seq snd=
_timer snd_seq_device snd battery ac soundcore sg autofs4 i915 drm_kms_=
helper drm i2c_algo_bit thermal video processor thermal_sys button scsi=
_dh_rdac scsi_dh_alua scsi_dh_emc scsi_dh_hp_sw scsi_dh netconsole atl1=
c
[ 29.655223] CPU: 1 PID: 59 Comm: kworker/1:4 Not tainted 3.18.0-mast=
er #48
[ 29.655225] Hardware name: TOSHIBA =EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD/=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD, BIOS V1.70 09/29/2009
[ 29.655231] Workqueue: events request_firmware_work_func
[ 29.655235] 0000000000000009 ffff8800379bba98 ffffffff8158f1d4 0000=
00000000c5c5
[ 29.655238] ffff8800379bbae8 ffff8800379bbad8 ffffffff8104c801 0000=
000000003664
[ 29.655241] ffff880037b0c000 ffff880136392dc0 ffff8800371feeb0 ffff=
88013b027098
[ 29.655242] Call Trace:
[ 29.655248] [<ffffffff8158f1d4>] dump_stack+0x46/0x58
[ 29.655253] [<ffffffff8104c801>] warn_slowpath_common+0x81/0xa0
[ 29.655256] [<ffffffff8104c866>] warn_slowpath_fmt+0x46/0x50
[ 29.655261] [<ffffffff811d1108>] ? kernfs_path+0x48/0x60
[ 29.655263] [<ffffffff811d4588>] sysfs_warn_dup+0x68/0x80
[ 29.655266] [<ffffffff811d462e>] sysfs_create_dir_ns+0x8e/0xa0
[ 29.655270] [<ffffffff8128e149>] kobject_add_internal+0xc9/0x400
[ 29.655273] [<ffffffff8128e8b0>] kobject_add+0x60/0xb0
[ 29.655276] [<ffffffff81593b16>] ? mutex_lock+0x16/0x37
[ 29.655281] [<ffffffff81388624>] device_add+0x104/0x600
[ 29.655285] [<ffffffff8114c3ce>] ? lazy_max_pages+0x1e/0x30
[ 29.655312] [<ffffffffa0401d0d>] wiphy_register+0x3fd/0x710 [cfg802=
11]
[ 29.655315] [<ffffffff8114dd92>] ? __vunmap+0xc2/0x110
[ 29.655346] [<ffffffffa04a5cfc>] ? ieee80211_register_hw+0x1ec/0x9a=
0 [mac80211]
[ 29.655361] [<ffffffffa04a5e78>] ieee80211_register_hw+0x368/0x9a0 =
[mac80211]
[ 29.655369] [<ffffffffa049126b>] rtl92se_fw_cb+0xab/0x1d0 [rtl8192s=
e]
[ 29.655373] [<ffffffff8139b650>] request_firmware_work_func+0x30/0x=
60
[ 29.655378] [<ffffffff810627ed>] process_one_work+0x14d/0x3d0
[ 29.655381] [<ffffffff81062b91>] worker_thread+0x121/0x480
[ 29.655384] [<ffffffff81062a70>] ? process_one_work+0x3d0/0x3d0
[ 29.655387] [<ffffffff810672c9>] kthread+0xc9/0xe0
[ 29.655390] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 29.655394] [<ffffffff81595b6c>] ret_from_fork+0x7c/0xb0
[ 29.655397] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 29.655399] ---[ end trace 3935ea42665e29bc ]---
[ 29.655401] ------------[ cut here ]------------
[ 29.655404] WARNING: CPU: 1 PID: 59 at lib/kobject.c:240 kobject_add=
_internal+0x294/0x400()
[ 29.655406] kobject_add_internal failed for phy0 with -EEXIST, don't=
try to register things with the same name in the same directory.
[ 29.655442] Modules linked in: rtl8192se(+) rtl_pci rtlwifi mac80211=
cfg80211 btusb bluetooth coretemp iTCO_wdt iTCO_vendor_support serio_r=
aw microcode toshiba_acpi sparse_keymap snd_hda_codec_hdmi snd_hda_code=
c_conexant rfkill snd_hda_codec_generic pcspkr uvcvideo videobuf2_core =
v4l2_common videodev videobuf2_vmalloc videobuf2_memops joydev i2c_i801=
wmi lpc_ich mfd_core acpi_cpufreq toshiba_haps snd_hda_intel snd_hda_c=
ontroller snd_hda_codec snd_hwdep toshiba_bluetooth snd_pcm snd_seq snd=
_timer snd_seq_device snd battery ac soundcore sg autofs4 i915 drm_kms_=
helper drm i2c_algo_bit thermal video processor thermal_sys button scsi=
_dh_rdac scsi_dh_alua scsi_dh_emc scsi_dh_hp_sw scsi_dh netconsole atl1=
c
[ 29.655444] CPU: 1 PID: 59 Comm: kworker/1:4 Tainted: G W =
3.18.0-master #48
[ 29.655446] Hardware name: TOSHIBA =EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD/=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD, BIOS V1.70 09/29/2009
[ 29.655449] Workqueue: events request_firmware_work_func
[ 29.655452] 0000000000000009 ffff8800379bbaf8 ffffffff8158f1d4 0000=
000000004e4e
[ 29.655455] ffff8800379bbb48 ffff8800379bbb38 ffffffff8104c801 ffff=
8800379bbb38
[ 29.655458] ffff880036470350 00000000ffffffef ffff8800367d72c0 ffff=
88013b027098
[ 29.655459] Call Trace:
[ 29.655462] [<ffffffff8158f1d4>] dump_stack+0x46/0x58
[ 29.655465] [<ffffffff8104c801>] warn_slowpath_common+0x81/0xa0
[ 29.655468] [<ffffffff8104c866>] warn_slowpath_fmt+0x46/0x50
[ 29.655471] [<ffffffff8128e314>] kobject_add_internal+0x294/0x400
[ 29.655474] [<ffffffff8128e8b0>] kobject_add+0x60/0xb0
[ 29.655477] [<ffffffff81593b16>] ? mutex_lock+0x16/0x37
[ 29.655480] [<ffffffff81388624>] device_add+0x104/0x600
[ 29.655483] [<ffffffff8114c3ce>] ? lazy_max_pages+0x1e/0x30
[ 29.655496] [<ffffffffa0401d0d>] wiphy_register+0x3fd/0x710 [cfg802=
11]
[ 29.655498] [<ffffffff8114dd92>] ? __vunmap+0xc2/0x110
[ 29.655512] [<ffffffffa04a5cfc>] ? ieee80211_register_hw+0x1ec/0x9a=
0 [mac80211]
[ 29.655526] [<ffffffffa04a5e78>] ieee80211_register_hw+0x368/0x9a0 =
[mac80211]
[ 29.655533] [<ffffffffa049126b>] rtl92se_fw_cb+0xab/0x1d0 [rtl8192s=
e]
[ 29.655536] [<ffffffff8139b650>] request_firmware_work_func+0x30/0x=
60
[ 29.655540] [<ffffffff810627ed>] process_one_work+0x14d/0x3d0
[ 29.655543] [<ffffffff81062b91>] worker_thread+0x121/0x480
[ 29.655546] [<ffffffff81062a70>] ? process_one_work+0x3d0/0x3d0
[ 29.655548] [<ffffffff810672c9>] kthread+0xc9/0xe0
[ 29.655551] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 29.655555] [<ffffffff81595b6c>] ret_from_fork+0x7c/0xb0
[ 29.655557] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 29.655559] ---[ end trace 3935ea42665e29bd ]---
[ 29.655563] rtl8192se:rtl92se_fw_cb():<0-0> Can't register mac80211 =
hw
[ 29.818806] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[ 30.265418] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.267617] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.269767] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.271919] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.274034] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.276117] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process

=2E.. more

[ 30.684030] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.684408] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.684776] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.685139] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.685535] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.685901] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.686290] rtl8192se:rtl92se_get_desc(): ERR rxdesc :4 not process
[ 30.686710] BUG: unable to handle kernel NULL pointer dereference at=
(null)
[ 30.687145] IP: [< (null)>] (null)
[ 30.687592] PGD 137165067 PUD 135e2e067 PMD 0=20
[ 30.688094] Oops: 0010 [#1] SMP=20
[ 30.688601] Modules linked in: arc4 rtl8192se rtl_pci rtlwifi mac802=
11 cfg80211 btusb bluetooth[ 0.000000] Initializing cgroup subsys cp=
uset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
(kdump tried to do its thing, but fscking systemd busted it, so, no oop=
s/crash)

Master with 38506ece reverted, kdump disabled:
[ 19.383131] rtl8192se 0000:08:00.0: enabling device (0000 -> 0003)
[ 19.424672] rtl8192se: FW Power Save off (module option)
[ 19.427269] rtl8192se: Driver for Realtek RTL8192SE/RTL8191SE
[ 19.427269] Loading firmware rtlwifi/rtl8192sefw.bin
[ 19.525633] EXT4-fs (sda1): mounted filesystem with ordered data mod=
e. Opts: acl
[ 19.528188] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[ 25.515995] BUG: unable to handle kernel NULL pointer dereference at=
(null)
[ 25.516020] IP: [< (null)>] (null)
[ 25.516020] PGD 362a6067 PUD 36d39067 PMD 0=20
[ 25.516020] Oops: 0010 [#1] SMP=20
[ 25.516020] Modules linked in: arc4 rtl8192se rtl_pci rtlwifi uvcvid=
eo coretemp videobuf2_core mac80211 iTCO_wdt iTCO_vendor_support cfg802=
11 v4l2_common btusb videodev lpc_ich bluetooth mfd_core microcode tosh=
iba_acpi sparse_keymap rfkill videobuf2_vmalloc videobuf2_memops serio_=
raw i2c_i801 joydev snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_c=
odec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep t=
oshiba_haps wmi snd_pcm toshiba_bluetooth snd_seq snd_timer snd_seq_dev=
ice snd battery[ 25.526648] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is=
not ready

[ 25.526604] soundcore ac acpi_cpufreq sg autofs4 i915 drm_kms_helpe=
r drm i2c_algo_bit thermal video processor thermal_sys button scsi_dh_r=
dac scsi_dh_alua scsi_dh_emc scsi_dh_hp_sw scsi_dh netconsole atl1c
[ 25.526604] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 3.18.0-mast=
er #49
[ 25.526604] Hardware name: TOSHIBA =EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD/=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD, BIOS V1.70 09/29/2009
[ 25.526604] Workqueue: rtl92s_pci rtl_watchdog_wq_callback [rtlwifi]
[ 25.526604] task: ffff88013f2e2550 ti: ffff88013f2e4000 task.ti: fff=
f88013f2e4000
[ 25.526604] RIP: 0010:[<0000000000000000>] [< (null)>] =
(null)
[ 25.526604] RSP: 0018:ffff88013f2e7d80 EFLAGS: 00010293
[ 25.526604] RAX: ffffffffa05363c0 RBX: ffff8800364019c0 RCX: 0000000=
000000000
[ 25.526604] RDX: 0000000000000001 RSI: 000000000000005d RDI: ffff880=
036400620
[ 25.526604] RBP: ffff88013f2e7df8 R08: ffffffff81658a40 R09: ffffc90=
022306aa0
[ 25.526604] R10: 000000000000037e R11: 0000000000aaaaaa R12: ffff880=
036400620
[ 25.526604] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000=
000000000
[ 25.526604] FS: 0000000000000000(0000) GS:ffff88013fd00000(0000) kn=
lGS:0000000000000000
[ 25.526604] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 25.526604] CR2: 0000000000000000 CR3: 00000000365e2000 CR4: 0000000=
0000407e0
[ 25.526604] Stack:
[ 25.526604] ffffffffa04ff51e ffff880037bdbc00 0000000000000002 ffff=
880037b8e400
[ 25.526604] 0000000037bdbe10 0000000000000000 0000000000000000 0000=
000000000000
[ 25.526604] 0000000000000000 ffff88013f2e7e38 ffff880036401be0 ffff=
88013f239700
[ 25.526604] Call Trace:
[ 25.526604] [<ffffffffa04ff51e>] ? rtl_watchdog_wq_callback+0xfe/0x=
420 [rtlwifi]
[ 25.526604] [<ffffffff810627ed>] process_one_work+0x14d/0x3d0
[ 25.526604] [<ffffffff81062b91>] worker_thread+0x121/0x480
[ 25.526604] [<ffffffff81062a70>] ? process_one_work+0x3d0/0x3d0
[ 25.526604] [<ffffffff810672c9>] kthread+0xc9/0xe0
[ 25.526604] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 25.526604] [<ffffffff81595b6c>] ret_from_fork+0x7c/0xb0
[ 25.526604] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 25.526604] Code: Bad RIP value.
[ 25.526604] RIP [< (null)>] (null)
[ 25.526604] RSP <ffff88013f2e7d80>
[ 25.526604] CR2: 0000000000000000
[ 25.526604] ---[ end trace fc110bb3836ecc51 ]---
[ 25.607061] BUG: unable to handle kernel paging request at fffffffff=
fffffd8
[ 25.609239] IP: [<ffffffff81067a71>] kthread_data+0x11/0x20
[ 25.609239] PGD 1a16067 PUD 1a18067 PMD 0=20
[ 25.609239] Oops: 0000 [#2] SMP=20
[ 25.609239] Modules linked in: arc4 rtl8192se rtl_pci rtlwifi uvcvid=
eo coretemp videobuf2_core mac80211 iTCO_wdt iTCO_vendor_support cfg802=
11 v4l2_common btusb videodev lpc_ich bluetooth mfd_core microcode tosh=
iba_acpi sparse_keymap rfkill videobuf2_vmalloc videobuf2_memops serio_=
raw i2c_i801 joydev snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_c=
odec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep t=
oshiba_haps wmi snd_pcm toshiba_bluetooth snd_seq snd_timer snd_seq_dev=
ice snd battery soundcore ac acpi_cpufreq sg autofs4 i915 drm_kms_helpe=
r drm i2c_algo_bit thermal video processor thermal_sys button scsi_dh_r=
dac scsi_dh_alua scsi_dh_emc scsi_dh_hp_sw scsi_dh netconsole atl1c
[ 25.609239] CPU: 1 PID: 21 Comm: kworker/1:1 Tainted: G D =
3.18.0-master #49
[ 25.609239] Hardware name: TOSHIBA =EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD/=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD, BIOS V1.70 09/29/2009
[ 25.609239] task: ffff88013f2e2550 ti: ffff88013f2e4000 task.ti: fff=
f88013f2e4000
[ 25.609239] RIP: 0010:[<ffffffff81067a71>] [<ffffffff81067a71>] kth=
read_data+0x11/0x20
[ 25.609239] RSP: 0018:ffff88013f2e7990 EFLAGS: 00010092
[ 25.609239] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000=
19c731d81
[ 25.609239] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff880=
13f2e2550
[ 25.609239] RBP: ffff88013f2e79a8 R08: ffff88013f1f8990 R09: 0000000=
0000003ac
[ 25.609239] R10: 000000000000bc00 R11: 000000000000b407 R12: ffff880=
13fd12b00
[ 25.609239] R13: 0000000000000001 R14: 0000000000000000 R15: ffff880=
13f2e2550
[ 25.609239] FS: 0000000000000000(0000) GS:ffff88013fd00000(0000) kn=
lGS:0000000000000000
[ 25.609239] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 25.609239] CR2: 0000000000000028 CR3: 0000000037075000 CR4: 0000000=
0000407e0
[ 25.609239] Stack:
[ 25.609239] ffffffff81063225 ffff88013f2e79a8 ffff88013f2e2550 ffff=
88013f2e7a18
[ 25.609239] ffffffff81591aa9 ffff88013f2e2550 0000000000012b00 ffff=
88013f2e7fd8
[ 25.609239] 0000000000012b00 ffff88013f2e7a08 ffff88013f2e2550 ffff=
88013f2e2550
[ 25.609239] Call Trace:
[ 25.609239] [<ffffffff81063225>] ? wq_worker_sleeping+0x15/0xa0
[ 25.609239] [<ffffffff81591aa9>] __schedule+0x549/0x810
[ 25.609239] [<ffffffff81591d99>] schedule+0x29/0x70
[ 25.609239] [<ffffffff8104dfa2>] do_exit+0x6a2/0x9e0
[ 25.609239] [<ffffffff8100645e>] oops_end+0x8e/0xd0
[ 25.609239] [<ffffffff8158a27a>] no_context+0x248/0x298
[ 25.609239] [<ffffffff8158a337>] __bad_area_nosemaphore+0x6d/0x1c6
[ 25.609239] [<ffffffff8158a4a3>] bad_area_nosemaphore+0x13/0x15
[ 25.609239] [<ffffffff8103d67c>] __do_page_fault+0x9c/0x530
[ 25.609239] [<ffffffff812ef124>] ? soft_cursor+0x1b4/0x250
[ 25.609239] [<ffffffff8103db1c>] do_page_fault+0xc/0x10
[ 25.609239] [<ffffffff81597722>] page_fault+0x22/0x30
[ 25.609239] [<ffffffffa04ff51e>] ? rtl_watchdog_wq_callback+0xfe/0x=
420 [rtlwifi]
[ 25.609239] [<ffffffff810627ed>] process_one_work+0x14d/0x3d0
[ 25.609239] [<ffffffff81062b91>] worker_thread+0x121/0x480
[ 25.609239] [<ffffffff81062a70>] ? process_one_work+0x3d0/0x3d0
[ 25.609239] [<ffffffff810672c9>] kthread+0xc9/0xe0
[ 25.609239] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 25.609239] [<ffffffff81595b6c>] ret_from_fork+0x7c/0xb0
[ 25.609239] [<ffffffff81067200>] ? __kthread_parkme+0x80/0x80
[ 25.609239] Code: 48 89 e5 5d 48 8b 40 c8 48 c1 e8 02 83 e0 01 c3 66=
2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 8b 87 60 04 00 00 55 48 8=
9 e5 5d <48> 8b 40 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 5=
5=20
[ 25.609239] RIP [<ffffffff81067a71>] kthread_data+0x11/0x20
[ 25.609239] RSP <ffff88013f2e7990>
[ 25.609239] CR2: ffffffffffffffd8
[ 25.609239] ---[ end trace fc110bb3836ecc52 ]---
[ 25.609239] Fixing recursive fault but reboot is needed!
[ 25.609239] Kernel panic - not syncing: Watchdog detected hard LOCKU=
P on cpu 1
[ 25.609239] Shutting down cpus with NMI
[ 25.609239] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation r=
ange: 0xffffffff80000000-0xffffffff9fffffff)
[ 25.609239] drm_kms_helper: panic occurred, switching back to text c=
onsole
[ 25.609239] Rebooting in 60 seconds..

[Murilo Opsfelder Araujo]

Post by Mike Galbraith

Post by Murilo Opsfelder Araujo
Hello, everyone.
With next-20140930 my laptop does not work, i.e. after I enter my login
and password in KDM, the entire system becomes unresponsive and I need
to reset it in order to reboot (it does not even show the KDE splash
screen).
It was working pretty fine with next-20140926.
I've also tested with next-20141022 and v3.18-rc1 and no luck.
git bisect pointed me to the commit below [1]. My wireless card is a
RTL8191SEvA [2].

Mine is RTL8191SEvB.
I was going to bisect RTL8191SE regression when I got a chance, but you
beat me to it.

Post by Murilo Opsfelder Araujo
commit 38506ecefab911785d5e1aa5889f6eeb462e0954
Date: Mon Sep 22 09:39:19 2014 -0500
rtlwifi: rtl_pci: Start modification for new drivers

Did you confirm that bisection result, ie revert it at HEAD of whichever
tree you bisected?
The revert (master) removed some warnings on the way to kaboom here, but
the drivers is still toxic. My log follows in case it's the same thing.
I can't go hunting atm, maybe during the weekend if the problem hasn't
evaporate by then.

next-20141023 does not work as well.

With commit 38506ecefab911785d5e1aa5889f6eeb462e0954 reverted, kernel
blows up very early in boot.

Cascardo (CC:) helped me to investigate and it seems that when
rtlpriv->cfg->ops->get_btc_status() is called, it is pointing to a NULL
function.

With the changes below, written by Cascardo, I could get rid of
oops/panic and system booted normally. But there was no wifi network
available (like if wifi card was disabled).

diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
b/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
index 1bff2a0..807f0f7 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
@@ -253,6 +253,11 @@ static void rtl92s_deinit_sw_vars(struct
ieee80211_hw *hw)
}
}

+static bool rtl92s_get_btc_status(void)
+{
+ return false;
+}
+
static struct rtl_hal_ops rtl8192se_hal_ops = {
.init_sw_vars = rtl92s_init_sw_vars,
.deinit_sw_vars = rtl92s_deinit_sw_vars,
@@ -294,6 +299,7 @@ static struct rtl_hal_ops rtl8192se_hal_ops = {
.set_bbreg = rtl92s_phy_set_bb_reg,
.get_rfreg = rtl92s_phy_query_rf_reg,
.set_rfreg = rtl92s_phy_set_rf_reg,
+ .get_btc_status = rtl92s_get_btc_status,
};

static struct rtl_mod_params rtl92se_mod_params = {

[Larry Finger]

Post by Murilo Opsfelder Araujo

Post by Mike Galbraith

Post by Murilo Opsfelder Araujo
Hello, everyone.
With next-20140930 my laptop does not work, i.e. after I enter my login
and password in KDM, the entire system becomes unresponsive and I need
to reset it in order to reboot (it does not even show the KDE splash
screen).
It was working pretty fine with next-20140926.
I've also tested with next-20141022 and v3.18-rc1 and no luck.
git bisect pointed me to the commit below [1]. My wireless card is a
RTL8191SEvA [2].

Mine is RTL8191SEvB.
I was going to bisect RTL8191SE regression when I got a chance, but you
beat me to it.

Post by Murilo Opsfelder Araujo
commit 38506ecefab911785d5e1aa5889f6eeb462e0954
Date: Mon Sep 22 09:39:19 2014 -0500
rtlwifi: rtl_pci: Start modification for new drivers

Did you confirm that bisection result, ie revert it at HEAD of whichever
tree you bisected?
The revert (master) removed some warnings on the way to kaboom here, but
the drivers is still toxic. My log follows in case it's the same thing.
I can't go hunting atm, maybe during the weekend if the problem hasn't
evaporate by then.

next-20141023 does not work as well.
With commit 38506ecefab911785d5e1aa5889f6eeb462e0954 reverted, kernel blows up
very early in boot.
Cascardo (CC:) helped me to investigate and it seems that when
rtlpriv->cfg->ops->get_btc_status() is called, it is pointing to a NULL function.
With the changes below, written by Cascardo, I could get rid of oops/panic and
system booted normally. But there was no wifi network available (like if wifi
card was disabled).
diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
b/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
index 1bff2a0..807f0f7 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/sw.c
@@ -253,6 +253,11 @@ static void rtl92s_deinit_sw_vars(struct ieee80211_hw *hw)
}
}
+static bool rtl92s_get_btc_status(void)
+{
+ return false;
+}
+
static struct rtl_hal_ops rtl8192se_hal_ops = {
.init_sw_vars = rtl92s_init_sw_vars,
.deinit_sw_vars = rtl92s_deinit_sw_vars,
@@ -294,6 +299,7 @@ static struct rtl_hal_ops rtl8192se_hal_ops = {
.set_bbreg = rtl92s_phy_set_bb_reg,
.get_rfreg = rtl92s_phy_query_rf_reg,
.set_rfreg = rtl92s_phy_set_rf_reg,
+ .get_btc_status = rtl92s_get_btc_status,
};
static struct rtl_mod_params rtl92se_mod_params = {

The above patch is correct; however, the one I just submitted will fix several
drivers rather than just this one. For your convenience, I have attached a copy
to this message.

Larry