Public bug reported:
I am using Xubuntu 16.04 with the latest software.
# Steps to reproduce
1. Select specific access point in the dropdown menu of the default graphical
network manager’s “indicator”.
2. Enter WiFi encryption password.
# What I expected
A connection to the access point is established.
# What happened instead
1. Wait a few seconds.
2. The window for password entry opened.
3. After entering the password again, go to 1.
I checked `dmesg`. This is what it reported to me:
[ 539.742755] ------------[ cut here ]------------
[ 539.742780] WARNING: CPU: 0 PID: 6 at
/build/linux-yM3O3R/linux-4.4.0/net/wireless/sme.c:728
__cfg80211_connect_result+0x3b2/0x420 [cfg80211]()
[ 539.742781] Modules linked in: rfcomm bnep rtsx_usb_ms memstick dell_wmi
sparse_keymap dell_laptop dcdbas dell_smm_hwmon snd_hda_codec_hdmi
snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel snd_hda_codec
snd_hda_core snd_hwdep snd_pcm btusb btrtl btbcm btintel bluetooth intel_rapl
x86_pkg_temp_thermal intel_powerclamp coretemp snd_seq_midi snd_seq_midi_event
wl(POE) kvm_intel uvcvideo kvm snd_rawmidi videobuf2_vmalloc videobuf2_memops
irqbypass videobuf2_v4l2 videobuf2_core v4l2_common input_leds videodev joydev
serio_raw media snd_seq snd_seq_device snd_timer cfg80211 snd soundcore shpchp
lpc_ich mei_me mei mac_hid dell_smo8800 parport_pc ppdev lp parport autofs4
drbg ansi_cprng algif_skcipher af_alg dm_crypt rtsx_usb_sdmmc rtsx_usb
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel
[ 539.742818] i915 aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd
i2c_algo_bit drm_kms_helper syscopyarea psmouse sysfillrect sysimgblt
fb_sys_fops drm ahci r8169 libahci mii wmi video fjes
[ 539.742831] CPU: 0 PID: 6 Comm: kworker/u16:0 Tainted: P W OE
4.4.0-103-generic #126-Ubuntu
[ 539.742832] Hardware name: Dell Inc. Vostro 3560/05GV6H, BIOS A07 05/17/2012
[ 539.742843] Workqueue: cfg80211 cfg80211_event_work [cfg80211]
[ 539.742844] 0000000000000286 b07824d3e76384b6 ffff880149c1fca0
ffffffff813fb523
[ 539.742847] 0000000000000000 ffffffffc03faf30 ffff880149c1fcd8
ffffffff810812e2
[ 539.742849] ffff8801472b7800 0000000000000000 0000000000000000
ffff8801470bb000
[ 539.742851] Call Trace:
[ 539.742856] [<ffffffff813fb523>] dump_stack+0x63/0x90
[ 539.742859] [<ffffffff810812e2>] warn_slowpath_common+0x82/0xc0
[ 539.742861] [<ffffffff8108142a>] warn_slowpath_null+0x1a/0x20
[ 539.742874] [<ffffffffc03d85f2>] __cfg80211_connect_result+0x3b2/0x420
[cfg80211]
[ 539.742885] [<ffffffffc03af46f>] cfg80211_process_wdev_events+0x13f/0x1b0
[cfg80211]
[ 539.742895] [<ffffffffc03af512>] cfg80211_process_rdev_events+0x32/0x70
[cfg80211]
[ 539.742904] [<ffffffffc03aa01e>] cfg80211_event_work+0x1e/0x30 [cfg80211]
[ 539.742908] [<ffffffff8109a635>] process_one_work+0x165/0x480
[ 539.742910] [<ffffffff8109a99b>] worker_thread+0x4b/0x4d0
[ 539.742912] [<ffffffff8109a950>] ? process_one_work+0x480/0x480
[ 539.742914] [<ffffffff810a0cd5>] kthread+0xe5/0x100
[ 539.742916] [<ffffffff810a0bf0>] ? kthread_create_on_node+0x1e0/0x1e0
[ 539.742921] [<ffffffff81844c0f>] ret_from_fork+0x3f/0x70
[ 539.742922] [<ffffffff810a0bf0>] ? kthread_create_on_node+0x1e0/0x1e0
[ 539.742924] ---[ end trace 447e5e9ec93ecc5d ]---
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1738067
Title:
cfg80211 crashes when trying to connect to encrypted access point
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