Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.15 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc3 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1738067 Title: cfg80211 crashes when trying to connect to encrypted access point Status in linux package in Ubuntu: Incomplete Bug description: 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 ]--- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1738067/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
