#12198 NORM 13.1.0: xo-4 kernel WARNING when using mwifiex

[Zarro Boogs per Child]

#12198: xo-4 kernel WARNING when using mwifiex
----------------------+-----------------------------------------------------
 Reporter:  pgf       |                 Owner:  dsaxena                          
     Type:  defect    |                Status:  new                              
 Priority:  normal    |             Milestone:  13.1.0                           
Component:  wireless  |               Version:  Development build as of this date
 Keywords:            |           Next_action:  never set                        
 Verified:  0         |   Deployment_affected:                                   
Blockedby:            |              Blocking:                                   
----------------------+-----------------------------------------------------
 just got the following kernel WARNINGs from the wireless core code during
 shutdown.  no associations had been done.  NM was running.  card is an
 8787, so mwifiex was in use.   (kernel was from os6)

 {{{
 reboot
 [   39.634776] ------------[ cut here ]------------
 [   39.650704] systemd[1]: olpc-kbdshim.service: main process exited,
 code=exited, status=1
 [   39.662795] WARNING: at net/wireless/core.c:751
 wdev_cleanup_work+0x100/0x138()
 [   39.699364] systemd[1]: Unit olpc-kbdshim.service entered failed state.
 [   39.706981] systemd[1]: olpc-switchd.service: main process exited,
 code=exited, status=1
 [   39.715148] Modules linked in: fuse xt_tcpudp iptable_filter ip_tables
 x_tables mousedev uinput syscopyarea sysfillrect sysimgblt fb_sys_fops
 mwifiex_sdio mwifiex sisusbvga joydev psmouse mmp_camera videobuf2_dma_sg
 videobuf2_vmalloc videobuf2_memops videobuf2_core zforce ov7670 [last
 unloaded: udlfb]
 [   39.792887] [<c00156e0>] (unwind_backtrace+0x0/0x128) from [<c0407794>]
 (dump_stack+0x20/0x24)
 [   39.819739] [<c0407794>] (dump_stack+0x20/0x24) from [<c0020b08>]
 (warn_slowpath_common+0x5c/0x74)
 [   39.819796] [<c0020b08>] (warn_slowpath_common+0x5c/0x74) from
 [<c0020b4c>] (warn_slowpath_null+0x2c/0x34)
 [   39.863343] [<c0020b4c>] (warn_slowpath_null+0x2c/0x34) from
 [<c03e2d4c>] (wdev_cleanup_work+0x100/0x138)
 [   39.919429] [<c03e2d4c>] (wdev_cleanup_work+0x100/0x138) from
 [<c003c474>] (process_one_work+0x260/0x488)
 [   39.956803] [<c003c474>] (process_one_work+0x260/0x488) from
 [<c003c8b8>] (worker_thread+0x1e0/0x32c)
 [   39.975846] [<c003c8b8>] (worker_thread+0x1e0/0x32c) from [<c0042018>]
 (kthread+0x9c/0xac)
 [   39.975925] [<c0042018>] (kthread+0x9c/0xac) from [<c000fd40>]
 (kernel_thread_exit+0x0/0x8)
 [   39.975925] ---[ end trace d24ec8aeda086647 ]---
 [   40.113615] dcon_freeze_store: 0
 [   42.193502] ------------[ cut here ]------------
 [   42.193513] WARNING: at net/wireless/scan.c:90
 cfg80211_scan_done+0x40/0x70()
 [   42.205597] Modules linked in: fuse xt_tcpudp iptable_filter ip_tables
 x_tables mousedev uinput syscopyarea sysfillrect sysimgblt fb_sys_fops
 mwifiex_sdio mwifiex sisusbvga joydev psmouse mmp_camera videobuf2_dma_sg
 videobuf2_vmalloc videobuf2_memops videobuf2_core zforce ov7670 [last
 unloaded: udlfb]
 [   42.229384] [<c00156e0>] (unwind_backtrace+0x0/0x128) from [<c0407794>]
 (dump_stack+0x20/0x24)
 [   42.241032] [<c0407794>] (dump_stack+0x20/0x24) from [<c0020b08>]
 (warn_slowpath_common+0x5c/0x74)
 [   42.250102] [<c0020b08>] (warn_slowpath_common+0x5c/0x74) from
 [<c0020b4c>] (warn_slowpath_null+0x2c/0x34)
 [   42.259875] [<c0020b4c>] (warn_slowpath_null+0x2c/0x34) from
 [<c03e8f9c>] (cfg80211_scan_done+0x40/0x70)
 [   42.259875] [<c03e8f9c>] (cfg80211_scan_done+0x40/0x70) from
 [<bf05d960>] (mwifiex_ret_802_11_scan+0x670/0x728 [mwifiex])
 [   42.280622] [<bf05d960>] (mwifiex_ret_802_11_scan+0x670/0x728
 [mwifiex]) from [<bf0639ec>] (mwifiex_process_sta_cmdresp+0x590/0xebc
 [mwifiex])
 [   42.293541] [<bf0639ec>] (mwifiex_process_sta_cmdresp+0x590/0xebc
 [mwifiex]) from [<bf056b50>] (mwifiex_process_cmdresp+0x2ec/0x3d4
 [mwifiex])
 [   42.306503] [<bf056b50>] (mwifiex_process_cmdresp+0x2ec/0x3d4
 [mwifiex]) from [<bf0532b0>] (mwifiex_main_process+0x25c/0x4c8 [mwifiex])
 [   42.318850] [<bf0532b0>] (mwifiex_main_process+0x25c/0x4c8 [mwifiex])
 from [<bf053544>] (mwifiex_main_work_queue+0x28/0x2c [mwifiex])
 [   42.331816] [<bf053544>] (mwifiex_main_work_queue+0x28/0x2c [mwifiex])
 from [<c003c474>] (process_one_work+0x260/0x488)
 [   42.342668] [<c003c474>] (process_one_work+0x260/0x488) from
 [<c003c8b8>] (worker_thread+0x1e0/0x32c)
 [   42.352013] [<c003c8b8>] (worker_thread+0x1e0/0x32c) from [<c0042018>]
 (kthread+0x9c/0xac)
 [   42.360421] [<c0042018>] (kthread+0x9c/0xac) from [<c000fd40>]
 (kernel_thread_exit+0x0/0x8)
 [   42.368735] ---[ end trace d24ec8aeda086648 ]---
 [   48.588873] systemd-journald[188]: Received SIGTERM
 [   48.681170] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
 [   48.955190] Restarting system.

 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/12198>
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