wpa_cli hang sending message??

[Ben Greear]

On 01/25/2011 04:13 PM, Ben Greear wrote:
> I just saw this while loading the latest wireless-testing kernel
> (and 128 stations, etc).
>
> Looks like wpa_cli is hanging trying to send a message.
>
> Maybe wpa_cli can't deal with a wpa_supplicant suddenly
> dying, or something like that?
>
> Looks like one can do UDP for a protocol as well, so might
> give that a try...

Bleh, UDP won't work with multiple interfaces because
everything tries to bind to the same UDP port, and
fails.

Guess I have to work around it some other way.

Ben

>
> (gdb) bt
> #0  0xb77eb430 in __kernel_vsyscall ()
> #1  0x4d90eff1 in send () from /lib/libc.so.6
> #2  0x0804cd28 in wpa_ctrl_request (ctrl=0x9544008,
>       cmd=0xbfc6cc30 "INTERFACE_ADD sta107\t/home/lanforge/wifi/wpa_supplicant-wiphy0-sta107.conf\tnl80211\t\t\t", cmd_len=85,
>       reply=0xbfc6c3dc "", reply_len=0xbfc6cbdc, msg_cb=0x8049590<wpa_cli_msg_cb>) at ../src/common/wpa_ctrl.c:230
> #3  0x0804962d in _wpa_ctrl_command (ctrl=0x9544008,
>       cmd=0xbfc6cc30 "INTERFACE_ADD sta107\t/home/lanforge/wifi/wpa_supplicant-wiphy0-sta107.conf\tnl80211\t\t\t", print=<value optimized out>)
>       at wpa_cli.c:245
> #4  0x0804a531 in wpa_cli_cmd_interface_add (ctrl=0x9544008, argc=3, argv=0xbfc6cea4) at wpa_cli.c:1467
> #5  0x0804c3d3 in wpa_request (ctrl=0x9544008, argc=4, argv=0xbfc6cea0) at wpa_cli.c:2599
> #6  0x0804cadb in main (argc=7, argv=0xbfc6ce94) at wpa_cli.c:3101
> (gdb) quit
> A debugging session is active.
>
> 	Inferior 1 [process 11632] will be detached.
>
> Quit anyway? (y or n) y
> Detaching from program: /home/lanforge/local/bin/wpa_cli, process 11632
> [root at lec2010-ath9k-1 lanforge]# cat /proc/11632/stack
> [<c07b3d5d>] unix_wait_for_peer+0x92/0xa8
> [<c07b41e7>] unix_dgram_sendmsg+0x2ed/0x3bb
> [<c0732305>] __sock_sendmsg+0x56/0x5f
> [<c0732994>] sock_sendmsg+0x98/0xac
> [<c0732f9b>] sys_sendto+0xaf/0xcb
> [<c0732fd4>] sys_send+0x1d/0x1f
> [<c0733f3e>] sys_socketcall+0xe6/0x1aa
> [<c040315c>] sysenter_do_call+0x12/0x38
> [<ffffffff>] 0xffffffff
>
>
> Thanks,
> Ben
>


-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com