Problems with NWA

[Ben Thompson]

On Sat, Feb 27, 2010 at 09:54:16PM +0300, Paul Fertser wrote:
> Nicola Mfb <nicola.mfb at gmail.com> writes:
> > On Fri, Feb 26, 2010 at 12:17 PM, Ben Thompson <bt4 at york.ac.uk> wrote:
> > [...]
> >> I think this is a different bug. It happens occasionally with me too,
> >> but it was also there with the old QT libs. Niko - are you aware of
> >> this problem?
> >
> > If you are talking about complete system freeze it happens to mee too
> > sometimes and is related to weak wifi kernel drivers.
> > If you are lucky and have an open ssh connection with usb you should
> > see the oops with dmesg, after that the "reboot" command itself seg
> > faults.
> 
> I guess we can and should fix oops especially if they force one to
> fully reboot, is that reported somewhere?

I will see if I can reliably reproduce the problem and submit a bug
report if there isn't one (where should I do this?).

Is this what you saw Niko? :-

[10815.670000] AR6000 disconnected
[10830.165000] Unable to handle kernel NULL pointer dereference at virtual address 0000002c
[10830.165000] pgd = c64b8000
[10830.170000] [0000002c] *pgd=36460031, *pte=00000000, *ppte=00000000
[10830.175000] Internal error: Oops: 17 [#1] PREEMPT
[10830.175000] Modules linked in: snd_pcm_oss snd_mixer_oss ar6000
snd_soc_neo1973_gta02_wm8753 snd_soc_s3c24xx_i2s snd_soc_s3c24xx
s3cmci btusb rfcomm ppp_generic slhc ohci_hcd ipv6 hidp l2cap
bluetooth g_ether snd_soc_wm8753 snd_soc_core snd_pcm snd_timer
snd_page_alloc snd
[10830.175000] CPU: 0    Not tainted  (2.6.29-rc3 #1)
[10830.175000] PC is at wmi_cmd_send+0x98/0xc0 [ar6000]
[10830.175000] LR is at wmi_cmd_send+0x60/0xc0 [ar6000]
[10830.175000] pc : [<bf159834>]    lr : [<bf1597fc>]    psr: 80000013
[10830.175000] sp : c6d69d28  ip : c6d69d28  fp : c6d69d44
[10830.175000] r10: c6d69d7c  r9 : c7bca600  r8 : c7bf8f00
[10830.175000] r7 : 00000009  r6 : 00000000  r5 : 00000000  r4 : c7bf8f00
[10830.175000] r3 : 00000000  r2 : 00000000  r1 : c7bf8f00  r0 : c6d62282
[10830.175000] Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM Segment user
[10830.175000] Control: c000717f  Table: 364b8000  DAC: 00000015
[10830.175000] Process wpa_supplicant (pid: 1083, stack limit = 0xc6d68268)
[10830.175000] Stack: (0xc6d69d28 to 0xc6d6a000)
[10830.175000] 9d20:                   00000000 00000000 c6d62284 00000000 c6d69d6c c6d69d48 
[10830.175000] 9d40: bf15b9d8 bf1597ac 00000000 c6d76000 c6d76460 c6d68000 00000000 c7bca600 
[10830.175000] 9d60: c6d69db4 c6d69d70 bf1538ec bf15b960 00000064 000000cd 00000001 00000000 
[10830.175000] 9d80: c7b74520 c005c744 c6d69d88 c6d69d88 bf1537c8 c6d69e78 c02e4138 00008b18 
[10830.175000] 9da0: c6d76000 00000000 c6d69e1c c6d69db8 c02b7ea8 bf1537d8 c6d69e88 c6d69e2c 
[10830.175000] 9dc0: 00000000 00000000 c03bfe70 22222222 22222222 22222222 22222222 22222222 
[10830.175000] 9de0: c6d69e04 c6d69e78 bed1bbd0 c6d76000 c6d69e1c c6d69e78 bed1bbd0 00000000 
[10830.175000] 9e00: 00008b18 c08c63e8 c6d68000 c08c63e8 c6d69e54 c6d69e20 c02b80ac c02b7c30 
[10830.175000] 9e20: bf1537c8 c6d69e30 00000000 00008b18 c6d69e74 bed1bbd0 00008b18 00000000 
[10830.175000] 9e40: 00000000 c002cfe4 c6d69ecc c6d69e58 c0247390 c02b8000 c6d69ef4 00000000 
[10830.175000] 9e60: c6d69fa4 c6d69e70 c02364bc c0236244 40000040 c6d69f14 30687465 00000000 
[10830.175000] 9e80: 00000000 00000000 00000000 00000000 00000000 00000000 c6d69efc c6d69ea8 
[10830.175000] 9ea0: c00694c8 00008b18 bed1bbd0 bed1bbd0 00008b18 c002cfe4 c6d68000 40023000 
[10830.175000] 9ec0: c6d69eec c6d69ed0 c023593c c0246cdc c7bc0e00 c0235720 bed1bbd0 00008b18 
[10830.175000] 9ee0: c6d69f0c c6d69ef0 c00ae894 c0235730 bed1bbd0 c7bc0e00 c77bea08 00000005 
[10830.175000] 9f00: c6d69f7c c6d69f10 c00aef14 c00ae86c c6d69e10 c6d69e14 00000800 bed1bca8 
[10830.175000] 9f20: 0003cd40 00000008 0003ce50 c6d69f70 00000000 0003cdc8 c6d69f7c c6d69f48 
[10830.175000] 9f40: c0030540 c003c158 c6d69f70 c03a4f40 c6d69f8c c7bc0e00 bed1bbd0 00008b18 
[10830.175000] 9f60: 00000005 c002cfe4 c6d68000 40023000 c6d69fa4 c6d69f80 c00aefc0 c00aea0c 
[10830.175000] 9f80: 4b8a4ece 00000000 00058fd8 bed1bbd0 00000000 00000036 00000000 c6d69fa8 
[10830.175000] 9fa0: c002ce60 c00aef90 00058fd8 bed1bbd0 00000005 00008b18 bed1bbd0 00058fed 
[10830.175000] 9fc0: 00058fd8 bed1bbd0 00000000 00000036 00000000 00000000 40023000 00000000 
[10830.175000] 9fe0: 0003d8d4 bed1ba80 00027821 402297fc 60000010 00000005 00000000 00000000 
[10830.175000] Backtrace: 
[10830.175000] [<bf15979c>] (wmi_cmd_send+0x0/0xc0 [ar6000]) from [<bf15b9d8>] (wmi_bssfilter_cmd+0x88/0x8c [ar6000])
[10830.175000]  r7:00000000 r6:c6d62284 r5:00000000 r4:00000000
[10830.175000] [<bf15b950>] (wmi_bssfilter_cmd+0x0/0x8c [ar6000]) from [<bf1538ec>] (ar6000_ioctl_siwscan+0x124/0x150 [ar6000])
[10830.175000]  r9:c7bca600 r8:00000000 r7:c6d68000 r6:c6d76460 r5:c6d76000
[10830.175000] r4:00000000
[10830.175000] [<bf1537c8>] (ar6000_ioctl_siwscan+0x0/0x150 [ar6000]) from [<c02b7ea8>] (ioctl_standard_call+0x288/0x3d0)
[10830.175000] [<c02b7c20>] (ioctl_standard_call+0x0/0x3d0) from [<c02b80ac>] (wext_handle_ioctl+0xbc/0x21c)
[10830.175000] [<c02b7ff0>] (wext_handle_ioctl+0x0/0x21c) from [<c0247390>] (dev_ioctl+0x6c4/0x72c)
[10830.175000]  r8:c002cfe4 r7:00000000 r6:00000000 r5:00008b18 r4:bed1bbd0
[10830.175000] [<c0246ccc>] (dev_ioctl+0x0/0x72c) from [<c023593c>] (sock_ioctl+0x21c/0x254)
[10830.175000] [<c0235720>] (sock_ioctl+0x0/0x254) from [<c00ae894>] (vfs_ioctl+0x38/0x98)
[10830.175000]  r7:00008b18 r6:bed1bbd0 r5:c0235720 r4:c7bc0e00
[10830.175000] [<c00ae85c>] (vfs_ioctl+0x0/0x98) from [<c00aef14>] (do_vfs_ioctl+0x518/0x584)
[10830.175000]  r7:00000005 r6:c77bea08 r5:c7bc0e00 r4:bed1bbd0
[10830.175000] [<c00ae9fc>] (do_vfs_ioctl+0x0/0x584) from [<c00aefc0>] (sys_ioctl+0x40/0x60)
[10830.175000] [<c00aef80>] (sys_ioctl+0x0/0x60) from [<c002ce60>] (ret_fast_syscall+0x0/0x2c)
[10830.175000]  r7:00000036 r6:00000000 r5:bed1bbd0 r4:00058fd8
[10830.175000] Code: e1a01004 ebffff58 e3a02001 e1a01004 (e595002c) 
[10830.220000] ---[ end trace 4a0994c323484e2e ]---