Possible wireless issue introduced in next-20140930

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* Possible wireless issue introduced in next-20140930
@ 2014-10-23  3:17 Murilo Opsfelder Araujo
  2014-10-23  5:23 ` Mike Galbraith
  0 siblings, 1 reply; 4+ messages in thread
From: Murilo Opsfelder Araujo @ 2014-10-23  3:17 UTC (permalink / raw)
  To: linux-kernel, netdev, linux-wireless; +Cc: Larry Finger, John W. Linville

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

-- 
Murilo

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: Possible wireless issue introduced in next-20140930
  2014-10-23  3:17 Possible wireless issue introduced in next-20140930 Murilo Opsfelder Araujo
@ 2014-10-23  5:23 ` Mike Galbraith
  2014-10-23 15:26   ` Murilo Opsfelder Araujo
  0 siblings, 1 reply; 4+ messages in thread
From: Mike Galbraith @ 2014-10-23  5:23 UTC (permalink / raw)
  To: Murilo Opsfelder Araujo
  Cc: linux-kernel, netdev, linux-wireless, Larry Finger,
	John W. Linville

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

> commit 38506ecefab911785d5e1aa5889f6eeb462e0954
> Author: Larry Finger <Larry.Finger@lwfinger.net>
> 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.

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_antenna_gain, max_eirp), (dfs_cac_time)
[   28.107012] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[   28.108663] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[   28.110251] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[   28.111837] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[   28.113422] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 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/pci0000:00/0000:00:1c.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_raw microcode toshiba_acpi sparse_keymap snd_hda_codec_hdmi snd_hda_codec_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_controller 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 atl1c
[   29.655223] CPU: 1 PID: 59 Comm: kworker/1:4 Not tainted 3.18.0-master #48
[   29.655225] Hardware name: TOSHIBA ��������������������������������/��������������������������������, BIOS V1.70    09/29/2009
[   29.655231] Workqueue: events request_firmware_work_func
[   29.655235]  0000000000000009 ffff8800379bba98 ffffffff8158f1d4 000000000000c5c5
[   29.655238]  ffff8800379bbae8 ffff8800379bbad8 ffffffff8104c801 0000000000003664
[   29.655241]  ffff880037b0c000 ffff880136392dc0 ffff8800371feeb0 ffff88013b027098
[   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 [cfg80211]
[   29.655315]  [<ffffffff8114dd92>] ? __vunmap+0xc2/0x110
[   29.655346]  [<ffffffffa04a5cfc>] ? ieee80211_register_hw+0x1ec/0x9a0 [mac80211]
[   29.655361]  [<ffffffffa04a5e78>] ieee80211_register_hw+0x368/0x9a0 [mac80211]
[   29.655369]  [<ffffffffa049126b>] rtl92se_fw_cb+0xab/0x1d0 [rtl8192se]
[   29.655373]  [<ffffffff8139b650>] request_firmware_work_func+0x30/0x60
[   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_raw microcode toshiba_acpi sparse_keymap snd_hda_codec_hdmi snd_hda_codec_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_controller 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 atl1c
[   29.655444] CPU: 1 PID: 59 Comm: kworker/1:4 Tainted: G        W      3.18.0-master #48
[   29.655446] Hardware name: TOSHIBA ��������������������������������/��������������������������������, BIOS V1.70    09/29/2009
[   29.655449] Workqueue: events request_firmware_work_func
[   29.655452]  0000000000000009 ffff8800379bbaf8 ffffffff8158f1d4 0000000000004e4e
[   29.655455]  ffff8800379bbb48 ffff8800379bbb38 ffffffff8104c801 ffff8800379bbb38
[   29.655458]  ffff880036470350 00000000ffffffef ffff8800367d72c0 ffff88013b027098
[   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 [cfg80211]
[   29.655498]  [<ffffffff8114dd92>] ? __vunmap+0xc2/0x110
[   29.655512]  [<ffffffffa04a5cfc>] ? ieee80211_register_hw+0x1ec/0x9a0 [mac80211]
[   29.655526]  [<ffffffffa04a5e78>] ieee80211_register_hw+0x368/0x9a0 [mac80211]
[   29.655533]  [<ffffffffa049126b>] rtl92se_fw_cb+0xab/0x1d0 [rtl8192se]
[   29.655536]  [<ffffffff8139b650>] request_firmware_work_func+0x30/0x60
[   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

... 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 
[   30.688094] Oops: 0010 [#1] SMP 
[   30.688601] Modules linked in: arc4 rtl8192se rtl_pci rtlwifi mac80211 cfg80211 btusb bluetooth[    0.000000] Initializing cgroup subsys cpuset
[    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 oops/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 mode. 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 
[   25.516020] Oops: 0010 [#1] SMP 
[   25.516020] Modules linked in: arc4 rtl8192se rtl_pci rtlwifi uvcvideo coretemp videobuf2_core mac80211 iTCO_wdt iTCO_vendor_support cfg80211 v4l2_common btusb videodev lpc_ich bluetooth mfd_core microcode toshiba_acpi sparse_keymap rfkill videobuf2_vmalloc videobuf2_memops serio_raw i2c_i801 joydev snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep toshiba_haps wmi snd_pcm toshiba_bluetooth snd_seq snd_timer snd_seq_device snd battery[   25.526648] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

[   25.526604]  soundcore ac acpi_cpufreq 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 atl1c
[   25.526604] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 3.18.0-master #49
[   25.526604] Hardware name: TOSHIBA ��������������������������������/��������������������������������, BIOS V1.70    09/29/2009
[   25.526604] Workqueue: rtl92s_pci rtl_watchdog_wq_callback [rtlwifi]
[   25.526604] task: ffff88013f2e2550 ti: ffff88013f2e4000 task.ti: ffff88013f2e4000
[   25.526604] RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
[   25.526604] RSP: 0018:ffff88013f2e7d80  EFLAGS: 00010293
[   25.526604] RAX: ffffffffa05363c0 RBX: ffff8800364019c0 RCX: 0000000000000000
[   25.526604] RDX: 0000000000000001 RSI: 000000000000005d RDI: ffff880036400620
[   25.526604] RBP: ffff88013f2e7df8 R08: ffffffff81658a40 R09: ffffc90022306aa0
[   25.526604] R10: 000000000000037e R11: 0000000000aaaaaa R12: ffff880036400620
[   25.526604] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   25.526604] FS:  0000000000000000(0000) GS:ffff88013fd00000(0000) knlGS:0000000000000000
[   25.526604] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   25.526604] CR2: 0000000000000000 CR3: 00000000365e2000 CR4: 00000000000407e0
[   25.526604] Stack:
[   25.526604]  ffffffffa04ff51e ffff880037bdbc00 0000000000000002 ffff880037b8e400
[   25.526604]  0000000037bdbe10 0000000000000000 0000000000000000 0000000000000000
[   25.526604]  0000000000000000 ffff88013f2e7e38 ffff880036401be0 ffff88013f239700
[   25.526604] Call Trace:
[   25.526604]  [<ffffffffa04ff51e>] ? rtl_watchdog_wq_callback+0xfe/0x420 [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 ffffffffffffffd8
[   25.609239] IP: [<ffffffff81067a71>] kthread_data+0x11/0x20
[   25.609239] PGD 1a16067 PUD 1a18067 PMD 0 
[   25.609239] Oops: 0000 [#2] SMP 
[   25.609239] Modules linked in: arc4 rtl8192se rtl_pci rtlwifi uvcvideo coretemp videobuf2_core mac80211 iTCO_wdt iTCO_vendor_support cfg80211 v4l2_common btusb videodev lpc_ich bluetooth mfd_core microcode toshiba_acpi sparse_keymap rfkill videobuf2_vmalloc videobuf2_memops serio_raw i2c_i801 joydev snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep toshiba_haps wmi snd_pcm toshiba_bluetooth snd_seq snd_timer snd_seq_device snd battery soundcore ac acpi_cpufreq 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 atl1c
[   25.609239] CPU: 1 PID: 21 Comm: kworker/1:1 Tainted: G      D        3.18.0-master #49
[   25.609239] Hardware name: TOSHIBA ��������������������������������/��������������������������������, BIOS V1.70    09/29/2009
[   25.609239] task: ffff88013f2e2550 ti: ffff88013f2e4000 task.ti: ffff88013f2e4000
[   25.609239] RIP: 0010:[<ffffffff81067a71>]  [<ffffffff81067a71>] kthread_data+0x11/0x20
[   25.609239] RSP: 0018:ffff88013f2e7990  EFLAGS: 00010092
[   25.609239] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 000000019c731d81
[   25.609239] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88013f2e2550
[   25.609239] RBP: ffff88013f2e79a8 R08: ffff88013f1f8990 R09: 00000000000003ac
[   25.609239] R10: 000000000000bc00 R11: 000000000000b407 R12: ffff88013fd12b00
[   25.609239] R13: 0000000000000001 R14: 0000000000000000 R15: ffff88013f2e2550
[   25.609239] FS:  0000000000000000(0000) GS:ffff88013fd00000(0000) knlGS:0000000000000000
[   25.609239] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   25.609239] CR2: 0000000000000028 CR3: 0000000037075000 CR4: 00000000000407e0
[   25.609239] Stack:
[   25.609239]  ffffffff81063225 ffff88013f2e79a8 ffff88013f2e2550 ffff88013f2e7a18
[   25.609239]  ffffffff81591aa9 ffff88013f2e2550 0000000000012b00 ffff88013f2e7fd8
[   25.609239]  0000000000012b00 ffff88013f2e7a08 ffff88013f2e2550 ffff88013f2e2550
[   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/0x420 [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 89 e5 5d <48> 8b 40 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 
[   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 LOCKUP on cpu 1
[   25.609239] Shutting down cpus with NMI
[   25.609239] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
[   25.609239] drm_kms_helper: panic occurred, switching back to text console
[   25.609239] Rebooting in 60 seconds..

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: Possible wireless issue introduced in next-20140930
  2014-10-23  5:23 ` Mike Galbraith
@ 2014-10-23 15:26   ` Murilo Opsfelder Araujo
  2014-10-23 16:32     ` Larry Finger
  0 siblings, 1 reply; 4+ messages in thread
From: Murilo Opsfelder Araujo @ 2014-10-23 15:26 UTC (permalink / raw)
  To: Mike Galbraith
  Cc: linux-kernel, netdev, linux-wireless, Larry Finger,
	John W. Linville, Thadeu Cascardo

On 10/23/2014 03:23 AM, Mike Galbraith wrote:
> On Thu, 2014-10-23 at 01:17 -0200, Murilo Opsfelder Araujo wrote:
>> 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.
>
>> commit 38506ecefab911785d5e1aa5889f6eeb462e0954
>> Author: Larry Finger <Larry.Finger@lwfinger.net>
>> 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 = {

-- 
Murilo

^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: Possible wireless issue introduced in next-20140930
  2014-10-23 15:26   ` Murilo Opsfelder Araujo
@ 2014-10-23 16:32     ` Larry Finger
  0 siblings, 0 replies; 4+ messages in thread
From: Larry Finger @ 2014-10-23 16:32 UTC (permalink / raw)
  To: Murilo Opsfelder Araujo, Mike Galbraith
  Cc: linux-kernel, netdev, linux-wireless, John W. Linville,
	Thadeu Cascardo

[-- Attachment #1: Type: text/plain, Size: 2933 bytes --]

On 10/23/2014 10:26 AM, Murilo Opsfelder Araujo wrote:
> On 10/23/2014 03:23 AM, Mike Galbraith wrote:
>> On Thu, 2014-10-23 at 01:17 -0200, Murilo Opsfelder Araujo wrote:
>>> 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.
>>
>>> commit 38506ecefab911785d5e1aa5889f6eeb462e0954
>>> Author: Larry Finger <Larry.Finger@lwfinger.net>
>>> 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



[-- Attachment #2: 0001-rtlwifi-Add-check-for-get_btc_status-callback.patch --]
[-- Type: text/x-patch, Size: 1460 bytes --]

>From 9fee70e0af554bc7827d13ef8cfb22ce95f61514 Mon Sep 17 00:00:00 2001
From: Larry Finger <Larry.Finger@lwfinger.net>
Date: Thu, 23 Oct 2014 11:18:05 -0500
Subject: [PATCH] rtlwifi: Add check for get_btc_status callback
To: Marcel Holtmann <marcel@holtmann.org>,
    Gustavo Padovan <gustavo@padovan.org>,
    Johan Hedberg <johan.hedberg@gmail.com>
Cc: linux-bluetooth@vger.kernel.org,
    netdev@vger.kernel.org

Drivers that do not use the get_btc_status() callback may not define a
dummy routine. The caller needs to check before making the call.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Murilo Opsfelder Araujo <mopsfelder@gmail.com>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Thadeu Cascardo <cascardo@cascardo.eti.br>
---
 drivers/net/wireless/rtlwifi/pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index 667aba8..25daa87 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -1796,7 +1796,8 @@ static int rtl_pci_start(struct ieee80211_hw *hw)
 	rtl_pci_reset_trx_ring(hw);
 
 	rtlpci->driver_is_goingto_unload = false;
-	if (rtlpriv->cfg->ops->get_btc_status()) {
+	if (rtlpriv->cfg->ops->get_btc_status &&
+	    rtlpriv->cfg->ops->get_btc_status()) {
 		rtlpriv->btcoexist.btc_ops->btc_init_variables(rtlpriv);
 		rtlpriv->btcoexist.btc_ops->btc_init_hal_vars(rtlpriv);
 	}
-- 
1.8.4.5


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2014-10-23 16:32 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2014-10-23  3:17 Possible wireless issue introduced in next-20140930 Murilo Opsfelder Araujo
2014-10-23  5:23 ` Mike Galbraith
2014-10-23 15:26   ` Murilo Opsfelder Araujo
2014-10-23 16:32     ` Larry Finger

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