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[Peter Storgaard <storgaard1234@xxxxxxxxx>]

Dont know if this belongs here but just tried latest kernel from
proposed

And it keeps crashing the kernel:


[  246.383091] ------------[ cut here ]------------
[  246.383108] WARNING: CPU: 1 PID: 1128 at /build/buildd/linux-3.13.0/net/mac80211/sta_info.c:432 sta_info_insert_rcu+0xb7/0xe0 [mac80211]()
[  246.383109] Modules linked in: ctr ccm bnep rfcomm nls_iso8859_1 snd_hda_codec_realtek snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm arc4 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel rtl8723be uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core aes_x86_64 lrw videodev btcoexist rtl8723_common gf128mul glue_helper rtl_pci rtlwifi nouveau ablk_helper mxm_wmi cryptd thinkpad_acpi ttm mac80211 snd_hda_intel snd_hda_codec i915 snd_hwdep snd_pcm btusb joydev nvram snd_page_alloc cfg80211 snd_seq_midi drm_kms_helper bluetooth snd_seq_midi_event drm snd_rawmidi snd_seq serio_raw i2c_algo_bit snd_seq_device snd_timer mei_me mei snd soundcore lpc_ich video wmi mac_hid parport_pc ppdev lp parport hid_logitech_dj usbhid hid psmouse r8169 ahci mii libahci
[  246.383143] CPU: 1 PID: 1128 Comm: wpa_supplicant Tainted: G        W    3.13.0-27-generic #50-Ubuntu
[  246.383144] Hardware name: LENOVO 80B6QB0/80B6QB0, BIOS J7ET27WW (1.04 ) 08/08/2013
[  246.383145]  0000000000000009 ffff8800bf4437b8 ffffffff817199c4 0000000000000000
[  246.383147]  ffff8800bf4437f0 ffffffff810676bd ffff8801285c6800 ffff8800bdb78600
[  246.383149]  00000000ffffffea ffff8800a9d70b9a 000000000000000c ffff8800bf443800
[  246.383151] Call Trace:
[  246.383156]  [<ffffffff817199c4>] dump_stack+0x45/0x56
[  246.383159]  [<ffffffff810676bd>] warn_slowpath_common+0x7d/0xa0
[  246.383161]  [<ffffffff8106779a>] warn_slowpath_null+0x1a/0x20
[  246.383166]  [<ffffffffa042f057>] sta_info_insert_rcu+0xb7/0xe0 [mac80211]
[  246.383172]  [<ffffffffa042f08e>] sta_info_insert+0xe/0x10 [mac80211]
[  246.383182]  [<ffffffffa046b200>] ieee80211_prep_connection+0x3b0/0x7c0 [mac80211]
[  246.383191]  [<ffffffffa0470dfd>] ieee80211_mgd_auth+0x27d/0x310 [mac80211]
[  246.383198]  [<ffffffffa0443c78>] ieee80211_auth+0x18/0x20 [mac80211]
[  246.383209]  [<ffffffffa02385b7>] cfg80211_mlme_auth+0x167/0x200 [cfg80211]
[  246.383216]  [<ffffffffa022456f>] nl80211_authenticate+0x2af/0x310 [cfg80211]
[  246.383220]  [<ffffffff8164d02d>] genl_family_rcv_msg+0x18d/0x370
[  246.383223]  [<ffffffff8164d210>] ? genl_family_rcv_msg+0x370/0x370
[  246.383224]  [<ffffffff8164d2a1>] genl_rcv_msg+0x91/0xd0
[  246.383226]  [<ffffffff8164b329>] netlink_rcv_skb+0xa9/0xc0
[  246.383228]  [<ffffffff8164b828>] genl_rcv+0x28/0x40
[  246.383230]  [<ffffffff8164a955>] netlink_unicast+0xd5/0x1b0
[  246.383232]  [<ffffffff8164ad2f>] netlink_sendmsg+0x2ff/0x740
[  246.383234]  [<ffffffff8160581b>] sock_sendmsg+0x8b/0xc0
[  246.383237]  [<ffffffff8160550e>] ? move_addr_to_kernel.part.16+0x1e/0x60
[  246.383239]  [<ffffffff816060d1>] ? move_addr_to_kernel+0x21/0x30
[  246.383241]  [<ffffffff816060a3>] ___sys_sendmsg+0x3c3/0x3d0
[  246.383243]  [<ffffffff817259a4>] ? __do_page_fault+0x204/0x560
[  246.383246]  [<ffffffff811112ec>] ? acct_account_cputime+0x1c/0x20
[  246.383248]  [<ffffffff8109d76b>] ? account_user_time+0x8b/0xa0
[  246.383250]  [<ffffffff816067a2>] __sys_sendmsg+0x42/0x80
[  246.383252]  [<ffffffff816067f2>] SyS_sendmsg+0x12/0x20
[  246.383254]  [<ffffffff8172a5bf>] tracesys+0xe1/0xe6
[  246.383256] ---[ end trace f9bd894da87e9f4d ]---


peter@peter-B5400:~$ uname -a
Linux peter-B5400 3.13.0-27-generic #50-Ubuntu SMP Thu May 15 18:06:16 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux


lspci -v
04:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
	Subsystem: Lenovo Device b728
	Flags: bus master, fast devsel, latency 0, IRQ 47
	I/O ports at 4000 [size=256]
	Memory at f0100000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [40] Power Management version 3
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [70] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [140] Device Serial Number 00-23-b7-fe-ff-4c-e0-00
	Capabilities: [150] Latency Tolerance Reporting
	Capabilities: [158] L1 PM Substates
	Kernel driver in use: rtl8723be

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https://bugs.launchpad.net/bugs/1320070

Title:
  Realtek Wifi card RTL8723BE drops connection with MSI enabled

Status in “linux” package in Ubuntu:
  In Progress
Status in “linux” source package in Trusty:
  Fix Committed
Status in “linux” source package in Utopic:
  In Progress

Bug description:
  As my testing result with ThinkPad E540 and other users' report[1],
  RTL8723BE drops connection with MSI enabled, need to backport
  329d6e299f92a591acb3a80f6d597a5f9dce7e6d "rtlwifi: rtl8723be: disable
  MSI interrupts mode"

  [1] https://bugs.launchpad.net/bugs/1240940

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